| 1 | // class template regex -*- C++ -*- |
|---|---|
| 2 | |
| 3 | // Copyright (C) 2010-2019 Free Software Foundation, Inc. |
| 4 | // |
| 5 | // This file is part of the GNU ISO C++ Library. This library is free |
| 6 | // software; you can redistribute it and/or modify it under the |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 16 | // Under Section 7 of GPL version 3, you are granted additional |
| 17 | // permissions described in the GCC Runtime Library Exception, version |
| 18 | // 3.1, as published by the Free Software Foundation. |
| 19 | |
| 20 | // You should have received a copy of the GNU General Public License and |
| 21 | // a copy of the GCC Runtime Library Exception along with this program; |
| 22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| 23 | // <http://www.gnu.org/licenses/>. |
| 24 | |
| 25 | /** |
| 26 | * @file bits/regex.h |
| 27 | * This is an internal header file, included by other library headers. |
| 28 | * Do not attempt to use it directly. @headername{regex} |
| 29 | */ |
| 30 | |
| 31 | namespace std _GLIBCXX_VISIBILITY(default) |
| 32 | { |
| 33 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 34 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 35 | template<typename, typename> |
| 36 | class basic_regex; |
| 37 | |
| 38 | template<typename, typename> |
| 39 | class match_results; |
| 40 | |
| 41 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 42 | |
| 43 | namespace __detail |
| 44 | { |
| 45 | enum class _RegexExecutorPolicy : int { _S_auto, _S_alternate }; |
| 46 | |
| 47 | template<typename _BiIter, typename _Alloc, |
| 48 | typename _CharT, typename _TraitsT, |
| 49 | _RegexExecutorPolicy __policy, |
| 50 | bool __match_mode> |
| 51 | bool |
| 52 | __regex_algo_impl(_BiIter __s, |
| 53 | _BiIter __e, |
| 54 | match_results<_BiIter, _Alloc>& __m, |
| 55 | const basic_regex<_CharT, _TraitsT>& __re, |
| 56 | regex_constants::match_flag_type __flags); |
| 57 | |
| 58 | template<typename, typename, typename, bool> |
| 59 | class _Executor; |
| 60 | } |
| 61 | |
| 62 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 63 | |
| 64 | /** |
| 65 | * @addtogroup regex |
| 66 | * @{ |
| 67 | */ |
| 68 | |
| 69 | /** |
| 70 | * @brief Describes aspects of a regular expression. |
| 71 | * |
| 72 | * A regular expression traits class that satisfies the requirements of |
| 73 | * section [28.7]. |
| 74 | * |
| 75 | * The class %regex is parameterized around a set of related types and |
| 76 | * functions used to complete the definition of its semantics. This class |
| 77 | * satisfies the requirements of such a traits class. |
| 78 | */ |
| 79 | template<typename _Ch_type> |
| 80 | struct regex_traits |
| 81 | { |
| 82 | public: |
| 83 | typedef _Ch_type char_type; |
| 84 | typedef std::basic_string<char_type> string_type; |
| 85 | typedef std::locale locale_type; |
| 86 | private: |
| 87 | struct _RegexMask |
| 88 | { |
| 89 | typedef std::ctype_base::mask _BaseType; |
| 90 | _BaseType _M_base; |
| 91 | unsigned char _M_extended; |
| 92 | static constexpr unsigned char _S_under = 1 << 0; |
| 93 | static constexpr unsigned char _S_valid_mask = 0x1; |
| 94 | |
| 95 | constexpr _RegexMask(_BaseType __base = 0, |
| 96 | unsigned char __extended = 0) |
| 97 | : _M_base(__base), _M_extended(__extended) |
| 98 | { } |
| 99 | |
| 100 | constexpr _RegexMask |
| 101 | operator&(_RegexMask __other) const |
| 102 | { |
| 103 | return _RegexMask(_M_base & __other._M_base, |
| 104 | _M_extended & __other._M_extended); |
| 105 | } |
| 106 | |
| 107 | constexpr _RegexMask |
| 108 | operator|(_RegexMask __other) const |
| 109 | { |
| 110 | return _RegexMask(_M_base | __other._M_base, |
| 111 | _M_extended | __other._M_extended); |
| 112 | } |
| 113 | |
| 114 | constexpr _RegexMask |
| 115 | operator^(_RegexMask __other) const |
| 116 | { |
| 117 | return _RegexMask(_M_base ^ __other._M_base, |
| 118 | _M_extended ^ __other._M_extended); |
| 119 | } |
| 120 | |
| 121 | constexpr _RegexMask |
| 122 | operator~() const |
| 123 | { return _RegexMask(~_M_base, ~_M_extended); } |
| 124 | |
| 125 | _RegexMask& |
| 126 | operator&=(_RegexMask __other) |
| 127 | { return *this = (*this) & __other; } |
| 128 | |
| 129 | _RegexMask& |
| 130 | operator|=(_RegexMask __other) |
| 131 | { return *this = (*this) | __other; } |
| 132 | |
| 133 | _RegexMask& |
| 134 | operator^=(_RegexMask __other) |
| 135 | { return *this = (*this) ^ __other; } |
| 136 | |
| 137 | constexpr bool |
| 138 | operator==(_RegexMask __other) const |
| 139 | { |
| 140 | return (_M_extended & _S_valid_mask) |
| 141 | == (__other._M_extended & _S_valid_mask) |
| 142 | && _M_base == __other._M_base; |
| 143 | } |
| 144 | |
| 145 | constexpr bool |
| 146 | operator!=(_RegexMask __other) const |
| 147 | { return !((*this) == __other); } |
| 148 | |
| 149 | }; |
| 150 | public: |
| 151 | typedef _RegexMask char_class_type; |
| 152 | |
| 153 | public: |
| 154 | /** |
| 155 | * @brief Constructs a default traits object. |
| 156 | */ |
| 157 | regex_traits() { } |
| 158 | |
| 159 | /** |
| 160 | * @brief Gives the length of a C-style string starting at @p __p. |
| 161 | * |
| 162 | * @param __p a pointer to the start of a character sequence. |
| 163 | * |
| 164 | * @returns the number of characters between @p *__p and the first |
| 165 | * default-initialized value of type @p char_type. In other words, uses |
| 166 | * the C-string algorithm for determining the length of a sequence of |
| 167 | * characters. |
| 168 | */ |
| 169 | static std::size_t |
| 170 | length(const char_type* __p) |
| 171 | { return string_type::traits_type::length(__p); } |
| 172 | |
| 173 | /** |
| 174 | * @brief Performs the identity translation. |
| 175 | * |
| 176 | * @param __c A character to the locale-specific character set. |
| 177 | * |
| 178 | * @returns __c. |
| 179 | */ |
| 180 | char_type |
| 181 | translate(char_type __c) const |
| 182 | { return __c; } |
| 183 | |
| 184 | /** |
| 185 | * @brief Translates a character into a case-insensitive equivalent. |
| 186 | * |
| 187 | * @param __c A character to the locale-specific character set. |
| 188 | * |
| 189 | * @returns the locale-specific lower-case equivalent of __c. |
| 190 | * @throws std::bad_cast if the imbued locale does not support the ctype |
| 191 | * facet. |
| 192 | */ |
| 193 | char_type |
| 194 | translate_nocase(char_type __c) const |
| 195 | { |
| 196 | typedef std::ctype<char_type> __ctype_type; |
| 197 | const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale)); |
| 198 | return __fctyp.tolower(__c); |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @brief Gets a sort key for a character sequence. |
| 203 | * |
| 204 | * @param __first beginning of the character sequence. |
| 205 | * @param __last one-past-the-end of the character sequence. |
| 206 | * |
| 207 | * Returns a sort key for the character sequence designated by the |
| 208 | * iterator range [F1, F2) such that if the character sequence [G1, G2) |
| 209 | * sorts before the character sequence [H1, H2) then |
| 210 | * v.transform(G1, G2) < v.transform(H1, H2). |
| 211 | * |
| 212 | * What this really does is provide a more efficient way to compare a |
| 213 | * string to multiple other strings in locales with fancy collation |
| 214 | * rules and equivalence classes. |
| 215 | * |
| 216 | * @returns a locale-specific sort key equivalent to the input range. |
| 217 | * |
| 218 | * @throws std::bad_cast if the current locale does not have a collate |
| 219 | * facet. |
| 220 | */ |
| 221 | template<typename _Fwd_iter> |
| 222 | string_type |
| 223 | transform(_Fwd_iter __first, _Fwd_iter __last) const |
| 224 | { |
| 225 | typedef std::collate<char_type> __collate_type; |
| 226 | const __collate_type& __fclt(use_facet<__collate_type>(_M_locale)); |
| 227 | string_type __s(__first, __last); |
| 228 | return __fclt.transform(__s.data(), __s.data() + __s.size()); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * @brief Gets a sort key for a character sequence, independent of case. |
| 233 | * |
| 234 | * @param __first beginning of the character sequence. |
| 235 | * @param __last one-past-the-end of the character sequence. |
| 236 | * |
| 237 | * Effects: if typeid(use_facet<collate<_Ch_type> >) == |
| 238 | * typeid(collate_byname<_Ch_type>) and the form of the sort key |
| 239 | * returned by collate_byname<_Ch_type>::transform(__first, __last) |
| 240 | * is known and can be converted into a primary sort key |
| 241 | * then returns that key, otherwise returns an empty string. |
| 242 | * |
| 243 | * @todo Implement this function correctly. |
| 244 | */ |
| 245 | template<typename _Fwd_iter> |
| 246 | string_type |
| 247 | transform_primary(_Fwd_iter __first, _Fwd_iter __last) const |
| 248 | { |
| 249 | // TODO : this is not entirely correct. |
| 250 | // This function requires extra support from the platform. |
| 251 | // |
| 252 | // Read http://gcc.gnu.org/ml/libstdc++/2013-09/msg00117.html and |
| 253 | // http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2003/n1429.htm |
| 254 | // for details. |
| 255 | typedef std::ctype<char_type> __ctype_type; |
| 256 | const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale)); |
| 257 | std::vector<char_type> __s(__first, __last); |
| 258 | __fctyp.tolower(__s.data(), __s.data() + __s.size()); |
| 259 | return this->transform(__s.data(), __s.data() + __s.size()); |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * @brief Gets a collation element by name. |
| 264 | * |
| 265 | * @param __first beginning of the collation element name. |
| 266 | * @param __last one-past-the-end of the collation element name. |
| 267 | * |
| 268 | * @returns a sequence of one or more characters that represents the |
| 269 | * collating element consisting of the character sequence designated by |
| 270 | * the iterator range [__first, __last). Returns an empty string if the |
| 271 | * character sequence is not a valid collating element. |
| 272 | */ |
| 273 | template<typename _Fwd_iter> |
| 274 | string_type |
| 275 | lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const; |
| 276 | |
| 277 | /** |
| 278 | * @brief Maps one or more characters to a named character |
| 279 | * classification. |
| 280 | * |
| 281 | * @param __first beginning of the character sequence. |
| 282 | * @param __last one-past-the-end of the character sequence. |
| 283 | * @param __icase ignores the case of the classification name. |
| 284 | * |
| 285 | * @returns an unspecified value that represents the character |
| 286 | * classification named by the character sequence designated by |
| 287 | * the iterator range [__first, __last). If @p icase is true, |
| 288 | * the returned mask identifies the classification regardless of |
| 289 | * the case of the characters to be matched (for example, |
| 290 | * [[:lower:]] is the same as [[:alpha:]]), otherwise a |
| 291 | * case-dependent classification is returned. The value |
| 292 | * returned shall be independent of the case of the characters |
| 293 | * in the character sequence. If the name is not recognized then |
| 294 | * returns a value that compares equal to 0. |
| 295 | * |
| 296 | * At least the following names (or their wide-character equivalent) are |
| 297 | * supported. |
| 298 | * - d |
| 299 | * - w |
| 300 | * - s |
| 301 | * - alnum |
| 302 | * - alpha |
| 303 | * - blank |
| 304 | * - cntrl |
| 305 | * - digit |
| 306 | * - graph |
| 307 | * - lower |
| 308 | |
| 309 | * - punct |
| 310 | * - space |
| 311 | * - upper |
| 312 | * - xdigit |
| 313 | */ |
| 314 | template<typename _Fwd_iter> |
| 315 | char_class_type |
| 316 | lookup_classname(_Fwd_iter __first, _Fwd_iter __last, |
| 317 | bool __icase = false) const; |
| 318 | |
| 319 | /** |
| 320 | * @brief Determines if @p c is a member of an identified class. |
| 321 | * |
| 322 | * @param __c a character. |
| 323 | * @param __f a class type (as returned from lookup_classname). |
| 324 | * |
| 325 | * @returns true if the character @p __c is a member of the classification |
| 326 | * represented by @p __f, false otherwise. |
| 327 | * |
| 328 | * @throws std::bad_cast if the current locale does not have a ctype |
| 329 | * facet. |
| 330 | */ |
| 331 | bool |
| 332 | isctype(_Ch_type __c, char_class_type __f) const; |
| 333 | |
| 334 | /** |
| 335 | * @brief Converts a digit to an int. |
| 336 | * |
| 337 | * @param __ch a character representing a digit. |
| 338 | * @param __radix the radix if the numeric conversion (limited to 8, 10, |
| 339 | * or 16). |
| 340 | * |
| 341 | * @returns the value represented by the digit __ch in base radix if the |
| 342 | * character __ch is a valid digit in base radix; otherwise returns -1. |
| 343 | */ |
| 344 | int |
| 345 | value(_Ch_type __ch, int __radix) const; |
| 346 | |
| 347 | /** |
| 348 | * @brief Imbues the regex_traits object with a copy of a new locale. |
| 349 | * |
| 350 | * @param __loc A locale. |
| 351 | * |
| 352 | * @returns a copy of the previous locale in use by the regex_traits |
| 353 | * object. |
| 354 | * |
| 355 | * @note Calling imbue with a different locale than the one currently in |
| 356 | * use invalidates all cached data held by *this. |
| 357 | */ |
| 358 | locale_type |
| 359 | imbue(locale_type __loc) |
| 360 | { |
| 361 | std::swap(_M_locale, __loc); |
| 362 | return __loc; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * @brief Gets a copy of the current locale in use by the regex_traits |
| 367 | * object. |
| 368 | */ |
| 369 | locale_type |
| 370 | getloc() const |
| 371 | { return _M_locale; } |
| 372 | |
| 373 | protected: |
| 374 | locale_type _M_locale; |
| 375 | }; |
| 376 | |
| 377 | // [7.8] Class basic_regex |
| 378 | /** |
| 379 | * Objects of specializations of this class represent regular expressions |
| 380 | * constructed from sequences of character type @p _Ch_type. |
| 381 | * |
| 382 | * Storage for the regular expression is allocated and deallocated as |
| 383 | * necessary by the member functions of this class. |
| 384 | */ |
| 385 | template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> |
| 386 | class basic_regex |
| 387 | { |
| 388 | public: |
| 389 | static_assert(is_same<_Ch_type, typename _Rx_traits::char_type>::value, |
| 390 | "regex traits class must have the same char_type"); |
| 391 | |
| 392 | // types: |
| 393 | typedef _Ch_type value_type; |
| 394 | typedef _Rx_traits traits_type; |
| 395 | typedef typename traits_type::string_type string_type; |
| 396 | typedef regex_constants::syntax_option_type flag_type; |
| 397 | typedef typename traits_type::locale_type locale_type; |
| 398 | |
| 399 | /** |
| 400 | * @name Constants |
| 401 | * std [28.8.1](1) |
| 402 | */ |
| 403 | //@{ |
| 404 | static constexpr flag_type icase = regex_constants::icase; |
| 405 | static constexpr flag_type nosubs = regex_constants::nosubs; |
| 406 | static constexpr flag_type optimize = regex_constants::optimize; |
| 407 | static constexpr flag_type collate = regex_constants::collate; |
| 408 | static constexpr flag_type ECMAScript = regex_constants::ECMAScript; |
| 409 | static constexpr flag_type basic = regex_constants::basic; |
| 410 | static constexpr flag_type extended = regex_constants::extended; |
| 411 | static constexpr flag_type awk = regex_constants::awk; |
| 412 | static constexpr flag_type grep = regex_constants::grep; |
| 413 | static constexpr flag_type egrep = regex_constants::egrep; |
| 414 | //@} |
| 415 | |
| 416 | // [7.8.2] construct/copy/destroy |
| 417 | /** |
| 418 | * Constructs a basic regular expression that does not match any |
| 419 | * character sequence. |
| 420 | */ |
| 421 | basic_regex() |
| 422 | : _M_flags(ECMAScript), _M_loc(), _M_automaton(nullptr) |
| 423 | { } |
| 424 | |
| 425 | /** |
| 426 | * @brief Constructs a basic regular expression from the |
| 427 | * sequence [__p, __p + char_traits<_Ch_type>::length(__p)) |
| 428 | * interpreted according to the flags in @p __f. |
| 429 | * |
| 430 | * @param __p A pointer to the start of a C-style null-terminated string |
| 431 | * containing a regular expression. |
| 432 | * @param __f Flags indicating the syntax rules and options. |
| 433 | * |
| 434 | * @throws regex_error if @p __p is not a valid regular expression. |
| 435 | */ |
| 436 | explicit |
| 437 | basic_regex(const _Ch_type* __p, flag_type __f = ECMAScript) |
| 438 | : basic_regex(__p, __p + char_traits<_Ch_type>::length(__p), __f) |
| 439 | { } |
| 440 | |
| 441 | /** |
| 442 | * @brief Constructs a basic regular expression from the sequence |
| 443 | * [p, p + len) interpreted according to the flags in @p f. |
| 444 | * |
| 445 | * @param __p A pointer to the start of a string containing a regular |
| 446 | * expression. |
| 447 | * @param __len The length of the string containing the regular |
| 448 | * expression. |
| 449 | * @param __f Flags indicating the syntax rules and options. |
| 450 | * |
| 451 | * @throws regex_error if @p __p is not a valid regular expression. |
| 452 | */ |
| 453 | basic_regex(const _Ch_type* __p, std::size_t __len, |
| 454 | flag_type __f = ECMAScript) |
| 455 | : basic_regex(__p, __p + __len, __f) |
| 456 | { } |
| 457 | |
| 458 | /** |
| 459 | * @brief Copy-constructs a basic regular expression. |
| 460 | * |
| 461 | * @param __rhs A @p regex object. |
| 462 | */ |
| 463 | basic_regex(const basic_regex& __rhs) = default; |
| 464 | |
| 465 | /** |
| 466 | * @brief Move-constructs a basic regular expression. |
| 467 | * |
| 468 | * @param __rhs A @p regex object. |
| 469 | */ |
| 470 | basic_regex(basic_regex&& __rhs) noexcept = default; |
| 471 | |
| 472 | /** |
| 473 | * @brief Constructs a basic regular expression from the string |
| 474 | * @p s interpreted according to the flags in @p f. |
| 475 | * |
| 476 | * @param __s A string containing a regular expression. |
| 477 | * @param __f Flags indicating the syntax rules and options. |
| 478 | * |
| 479 | * @throws regex_error if @p __s is not a valid regular expression. |
| 480 | */ |
| 481 | template<typename _Ch_traits, typename _Ch_alloc> |
| 482 | explicit |
| 483 | basic_regex(const std::basic_string<_Ch_type, _Ch_traits, |
| 484 | _Ch_alloc>& __s, |
| 485 | flag_type __f = ECMAScript) |
| 486 | : basic_regex(__s.data(), __s.data() + __s.size(), __f) |
| 487 | { } |
| 488 | |
| 489 | /** |
| 490 | * @brief Constructs a basic regular expression from the range |
| 491 | * [first, last) interpreted according to the flags in @p f. |
| 492 | * |
| 493 | * @param __first The start of a range containing a valid regular |
| 494 | * expression. |
| 495 | * @param __last The end of a range containing a valid regular |
| 496 | * expression. |
| 497 | * @param __f The format flags of the regular expression. |
| 498 | * |
| 499 | * @throws regex_error if @p [__first, __last) is not a valid regular |
| 500 | * expression. |
| 501 | */ |
| 502 | template<typename _FwdIter> |
| 503 | basic_regex(_FwdIter __first, _FwdIter __last, |
| 504 | flag_type __f = ECMAScript) |
| 505 | : basic_regex(std::move(__first), std::move(__last), locale_type(), __f) |
| 506 | { } |
| 507 | |
| 508 | /** |
| 509 | * @brief Constructs a basic regular expression from an initializer list. |
| 510 | * |
| 511 | * @param __l The initializer list. |
| 512 | * @param __f The format flags of the regular expression. |
| 513 | * |
| 514 | * @throws regex_error if @p __l is not a valid regular expression. |
| 515 | */ |
| 516 | basic_regex(initializer_list<_Ch_type> __l, flag_type __f = ECMAScript) |
| 517 | : basic_regex(__l.begin(), __l.end(), __f) |
| 518 | { } |
| 519 | |
| 520 | /** |
| 521 | * @brief Destroys a basic regular expression. |
| 522 | */ |
| 523 | ~basic_regex() |
| 524 | { } |
| 525 | |
| 526 | /** |
| 527 | * @brief Assigns one regular expression to another. |
| 528 | */ |
| 529 | basic_regex& |
| 530 | operator=(const basic_regex& __rhs) |
| 531 | { return this->assign(__rhs); } |
| 532 | |
| 533 | /** |
| 534 | * @brief Move-assigns one regular expression to another. |
| 535 | */ |
| 536 | basic_regex& |
| 537 | operator=(basic_regex&& __rhs) noexcept |
| 538 | { return this->assign(std::move(__rhs)); } |
| 539 | |
| 540 | /** |
| 541 | * @brief Replaces a regular expression with a new one constructed from |
| 542 | * a C-style null-terminated string. |
| 543 | * |
| 544 | * @param __p A pointer to the start of a null-terminated C-style string |
| 545 | * containing a regular expression. |
| 546 | */ |
| 547 | basic_regex& |
| 548 | operator=(const _Ch_type* __p) |
| 549 | { return this->assign(__p); } |
| 550 | |
| 551 | /** |
| 552 | * @brief Replaces a regular expression with a new one constructed from |
| 553 | * an initializer list. |
| 554 | * |
| 555 | * @param __l The initializer list. |
| 556 | * |
| 557 | * @throws regex_error if @p __l is not a valid regular expression. |
| 558 | */ |
| 559 | basic_regex& |
| 560 | operator=(initializer_list<_Ch_type> __l) |
| 561 | { return this->assign(__l.begin(), __l.end()); } |
| 562 | |
| 563 | /** |
| 564 | * @brief Replaces a regular expression with a new one constructed from |
| 565 | * a string. |
| 566 | * |
| 567 | * @param __s A pointer to a string containing a regular expression. |
| 568 | */ |
| 569 | template<typename _Ch_traits, typename _Alloc> |
| 570 | basic_regex& |
| 571 | operator=(const basic_string<_Ch_type, _Ch_traits, _Alloc>& __s) |
| 572 | { return this->assign(__s); } |
| 573 | |
| 574 | // [7.8.3] assign |
| 575 | /** |
| 576 | * @brief the real assignment operator. |
| 577 | * |
| 578 | * @param __rhs Another regular expression object. |
| 579 | */ |
| 580 | basic_regex& |
| 581 | assign(const basic_regex& __rhs) |
| 582 | { |
| 583 | basic_regex __tmp(__rhs); |
| 584 | this->swap(__tmp); |
| 585 | return *this; |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * @brief The move-assignment operator. |
| 590 | * |
| 591 | * @param __rhs Another regular expression object. |
| 592 | */ |
| 593 | basic_regex& |
| 594 | assign(basic_regex&& __rhs) noexcept |
| 595 | { |
| 596 | basic_regex __tmp(std::move(__rhs)); |
| 597 | this->swap(__tmp); |
| 598 | return *this; |
| 599 | } |
| 600 | |
| 601 | /** |
| 602 | * @brief Assigns a new regular expression to a regex object from a |
| 603 | * C-style null-terminated string containing a regular expression |
| 604 | * pattern. |
| 605 | * |
| 606 | * @param __p A pointer to a C-style null-terminated string containing |
| 607 | * a regular expression pattern. |
| 608 | * @param __flags Syntax option flags. |
| 609 | * |
| 610 | * @throws regex_error if __p does not contain a valid regular |
| 611 | * expression pattern interpreted according to @p __flags. If |
| 612 | * regex_error is thrown, *this remains unchanged. |
| 613 | */ |
| 614 | basic_regex& |
| 615 | assign(const _Ch_type* __p, flag_type __flags = ECMAScript) |
| 616 | { return this->assign(string_type(__p), __flags); } |
| 617 | |
| 618 | /** |
| 619 | * @brief Assigns a new regular expression to a regex object from a |
| 620 | * C-style string containing a regular expression pattern. |
| 621 | * |
| 622 | * @param __p A pointer to a C-style string containing a |
| 623 | * regular expression pattern. |
| 624 | * @param __len The length of the regular expression pattern string. |
| 625 | * @param __flags Syntax option flags. |
| 626 | * |
| 627 | * @throws regex_error if p does not contain a valid regular |
| 628 | * expression pattern interpreted according to @p __flags. If |
| 629 | * regex_error is thrown, *this remains unchanged. |
| 630 | */ |
| 631 | basic_regex& |
| 632 | assign(const _Ch_type* __p, std::size_t __len, flag_type __flags) |
| 633 | { return this->assign(string_type(__p, __len), __flags); } |
| 634 | |
| 635 | /** |
| 636 | * @brief Assigns a new regular expression to a regex object from a |
| 637 | * string containing a regular expression pattern. |
| 638 | * |
| 639 | * @param __s A string containing a regular expression pattern. |
| 640 | * @param __flags Syntax option flags. |
| 641 | * |
| 642 | * @throws regex_error if __s does not contain a valid regular |
| 643 | * expression pattern interpreted according to @p __flags. If |
| 644 | * regex_error is thrown, *this remains unchanged. |
| 645 | */ |
| 646 | template<typename _Ch_traits, typename _Alloc> |
| 647 | basic_regex& |
| 648 | assign(const basic_string<_Ch_type, _Ch_traits, _Alloc>& __s, |
| 649 | flag_type __flags = ECMAScript) |
| 650 | { |
| 651 | return this->assign(basic_regex(__s.data(), __s.data() + __s.size(), |
| 652 | _M_loc, __flags)); |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * @brief Assigns a new regular expression to a regex object. |
| 657 | * |
| 658 | * @param __first The start of a range containing a valid regular |
| 659 | * expression. |
| 660 | * @param __last The end of a range containing a valid regular |
| 661 | * expression. |
| 662 | * @param __flags Syntax option flags. |
| 663 | * |
| 664 | * @throws regex_error if p does not contain a valid regular |
| 665 | * expression pattern interpreted according to @p __flags. If |
| 666 | * regex_error is thrown, the object remains unchanged. |
| 667 | */ |
| 668 | template<typename _InputIterator> |
| 669 | basic_regex& |
| 670 | assign(_InputIterator __first, _InputIterator __last, |
| 671 | flag_type __flags = ECMAScript) |
| 672 | { return this->assign(string_type(__first, __last), __flags); } |
| 673 | |
| 674 | /** |
| 675 | * @brief Assigns a new regular expression to a regex object. |
| 676 | * |
| 677 | * @param __l An initializer list representing a regular expression. |
| 678 | * @param __flags Syntax option flags. |
| 679 | * |
| 680 | * @throws regex_error if @p __l does not contain a valid |
| 681 | * regular expression pattern interpreted according to @p |
| 682 | * __flags. If regex_error is thrown, the object remains |
| 683 | * unchanged. |
| 684 | */ |
| 685 | basic_regex& |
| 686 | assign(initializer_list<_Ch_type> __l, flag_type __flags = ECMAScript) |
| 687 | { return this->assign(__l.begin(), __l.end(), __flags); } |
| 688 | |
| 689 | // [7.8.4] const operations |
| 690 | /** |
| 691 | * @brief Gets the number of marked subexpressions within the regular |
| 692 | * expression. |
| 693 | */ |
| 694 | unsigned int |
| 695 | mark_count() const |
| 696 | { |
| 697 | if (_M_automaton) |
| 698 | return _M_automaton->_M_sub_count() - 1; |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | /** |
| 703 | * @brief Gets the flags used to construct the regular expression |
| 704 | * or in the last call to assign(). |
| 705 | */ |
| 706 | flag_type |
| 707 | flags() const |
| 708 | { return _M_flags; } |
| 709 | |
| 710 | // [7.8.5] locale |
| 711 | /** |
| 712 | * @brief Imbues the regular expression object with the given locale. |
| 713 | * |
| 714 | * @param __loc A locale. |
| 715 | */ |
| 716 | locale_type |
| 717 | imbue(locale_type __loc) |
| 718 | { |
| 719 | std::swap(__loc, _M_loc); |
| 720 | _M_automaton.reset(); |
| 721 | return __loc; |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * @brief Gets the locale currently imbued in the regular expression |
| 726 | * object. |
| 727 | */ |
| 728 | locale_type |
| 729 | getloc() const |
| 730 | { return _M_loc; } |
| 731 | |
| 732 | // [7.8.6] swap |
| 733 | /** |
| 734 | * @brief Swaps the contents of two regular expression objects. |
| 735 | * |
| 736 | * @param __rhs Another regular expression object. |
| 737 | */ |
| 738 | void |
| 739 | swap(basic_regex& __rhs) |
| 740 | { |
| 741 | std::swap(_M_flags, __rhs._M_flags); |
| 742 | std::swap(_M_loc, __rhs._M_loc); |
| 743 | std::swap(_M_automaton, __rhs._M_automaton); |
| 744 | } |
| 745 | |
| 746 | #ifdef _GLIBCXX_DEBUG |
| 747 | void |
| 748 | _M_dot(std::ostream& __ostr) |
| 749 | { _M_automaton->_M_dot(__ostr); } |
| 750 | #endif |
| 751 | |
| 752 | private: |
| 753 | typedef std::shared_ptr<const __detail::_NFA<_Rx_traits>> _AutomatonPtr; |
| 754 | |
| 755 | template<typename _FwdIter> |
| 756 | basic_regex(_FwdIter __first, _FwdIter __last, locale_type __loc, |
| 757 | flag_type __f) |
| 758 | : _M_flags(__f), _M_loc(std::move(__loc)), |
| 759 | _M_automaton(__detail::__compile_nfa<_Rx_traits>( |
| 760 | std::move(__first), std::move(__last), _M_loc, _M_flags)) |
| 761 | { } |
| 762 | |
| 763 | template<typename _Bp, typename _Ap, typename _Cp, typename _Rp, |
| 764 | __detail::_RegexExecutorPolicy, bool> |
| 765 | friend bool |
| 766 | __detail::__regex_algo_impl(_Bp, _Bp, match_results<_Bp, _Ap>&, |
| 767 | const basic_regex<_Cp, _Rp>&, |
| 768 | regex_constants::match_flag_type); |
| 769 | |
| 770 | template<typename, typename, typename, bool> |
| 771 | friend class __detail::_Executor; |
| 772 | |
| 773 | flag_type _M_flags; |
| 774 | locale_type _M_loc; |
| 775 | _AutomatonPtr _M_automaton; |
| 776 | }; |
| 777 | |
| 778 | #if __cplusplus < 201703L |
| 779 | template<typename _Ch, typename _Tr> |
| 780 | constexpr regex_constants::syntax_option_type |
| 781 | basic_regex<_Ch, _Tr>::icase; |
| 782 | |
| 783 | template<typename _Ch, typename _Tr> |
| 784 | constexpr regex_constants::syntax_option_type |
| 785 | basic_regex<_Ch, _Tr>::nosubs; |
| 786 | |
| 787 | template<typename _Ch, typename _Tr> |
| 788 | constexpr regex_constants::syntax_option_type |
| 789 | basic_regex<_Ch, _Tr>::optimize; |
| 790 | |
| 791 | template<typename _Ch, typename _Tr> |
| 792 | constexpr regex_constants::syntax_option_type |
| 793 | basic_regex<_Ch, _Tr>::collate; |
| 794 | |
| 795 | template<typename _Ch, typename _Tr> |
| 796 | constexpr regex_constants::syntax_option_type |
| 797 | basic_regex<_Ch, _Tr>::ECMAScript; |
| 798 | |
| 799 | template<typename _Ch, typename _Tr> |
| 800 | constexpr regex_constants::syntax_option_type |
| 801 | basic_regex<_Ch, _Tr>::basic; |
| 802 | |
| 803 | template<typename _Ch, typename _Tr> |
| 804 | constexpr regex_constants::syntax_option_type |
| 805 | basic_regex<_Ch, _Tr>::extended; |
| 806 | |
| 807 | template<typename _Ch, typename _Tr> |
| 808 | constexpr regex_constants::syntax_option_type |
| 809 | basic_regex<_Ch, _Tr>::awk; |
| 810 | |
| 811 | template<typename _Ch, typename _Tr> |
| 812 | constexpr regex_constants::syntax_option_type |
| 813 | basic_regex<_Ch, _Tr>::grep; |
| 814 | |
| 815 | template<typename _Ch, typename _Tr> |
| 816 | constexpr regex_constants::syntax_option_type |
| 817 | basic_regex<_Ch, _Tr>::egrep; |
| 818 | #endif // ! C++17 |
| 819 | |
| 820 | #if __cpp_deduction_guides >= 201606 |
| 821 | template<typename _ForwardIterator> |
| 822 | basic_regex(_ForwardIterator, _ForwardIterator, |
| 823 | regex_constants::syntax_option_type = {}) |
| 824 | -> basic_regex<typename iterator_traits<_ForwardIterator>::value_type>; |
| 825 | #endif |
| 826 | |
| 827 | /** @brief Standard regular expressions. */ |
| 828 | typedef basic_regex<char> regex; |
| 829 | |
| 830 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 831 | /** @brief Standard wide-character regular expressions. */ |
| 832 | typedef basic_regex<wchar_t> wregex; |
| 833 | #endif |
| 834 | |
| 835 | |
| 836 | // [7.8.6] basic_regex swap |
| 837 | /** |
| 838 | * @brief Swaps the contents of two regular expression objects. |
| 839 | * @param __lhs First regular expression. |
| 840 | * @param __rhs Second regular expression. |
| 841 | */ |
| 842 | template<typename _Ch_type, typename _Rx_traits> |
| 843 | inline void |
| 844 | swap(basic_regex<_Ch_type, _Rx_traits>& __lhs, |
| 845 | basic_regex<_Ch_type, _Rx_traits>& __rhs) |
| 846 | { __lhs.swap(__rhs); } |
| 847 | |
| 848 | |
| 849 | // C++11 28.9 [re.submatch] Class template sub_match |
| 850 | /** |
| 851 | * A sequence of characters matched by a particular marked sub-expression. |
| 852 | * |
| 853 | * An object of this class is essentially a pair of iterators marking a |
| 854 | * matched subexpression within a regular expression pattern match. Such |
| 855 | * objects can be converted to and compared with std::basic_string objects |
| 856 | * of a similar base character type as the pattern matched by the regular |
| 857 | * expression. |
| 858 | * |
| 859 | * The iterators that make up the pair are the usual half-open interval |
| 860 | * referencing the actual original pattern matched. |
| 861 | */ |
| 862 | template<typename _BiIter> |
| 863 | class sub_match : public std::pair<_BiIter, _BiIter> |
| 864 | { |
| 865 | typedef iterator_traits<_BiIter> __iter_traits; |
| 866 | |
| 867 | public: |
| 868 | typedef typename __iter_traits::value_type value_type; |
| 869 | typedef typename __iter_traits::difference_type difference_type; |
| 870 | typedef _BiIter iterator; |
| 871 | typedef basic_string<value_type> string_type; |
| 872 | |
| 873 | bool matched; |
| 874 | |
| 875 | constexpr sub_match() noexcept : matched() { } |
| 876 | |
| 877 | /// Gets the length of the matching sequence. |
| 878 | difference_type |
| 879 | length() const noexcept |
| 880 | { return this->matched ? std::distance(this->first, this->second) : 0; } |
| 881 | |
| 882 | /** |
| 883 | * @brief Gets the matching sequence as a string. |
| 884 | * |
| 885 | * @returns the matching sequence as a string. |
| 886 | * |
| 887 | * This is the implicit conversion operator. It is identical to the |
| 888 | * str() member function except that it will want to pop up in |
| 889 | * unexpected places and cause a great deal of confusion and cursing |
| 890 | * from the unwary. |
| 891 | */ |
| 892 | operator string_type() const |
| 893 | { return str(); } |
| 894 | |
| 895 | /** |
| 896 | * @brief Gets the matching sequence as a string. |
| 897 | * |
| 898 | * @returns the matching sequence as a string. |
| 899 | */ |
| 900 | string_type |
| 901 | str() const |
| 902 | { |
| 903 | return this->matched |
| 904 | ? string_type(this->first, this->second) |
| 905 | : string_type(); |
| 906 | } |
| 907 | |
| 908 | /** |
| 909 | * @brief Compares this and another matched sequence. |
| 910 | * |
| 911 | * @param __s Another matched sequence to compare to this one. |
| 912 | * |
| 913 | * @retval <0 this matched sequence will collate before @p __s. |
| 914 | * @retval =0 this matched sequence is equivalent to @p __s. |
| 915 | * @retval <0 this matched sequence will collate after @p __s. |
| 916 | */ |
| 917 | int |
| 918 | compare(const sub_match& __s) const |
| 919 | { return this->_M_str().compare(__s._M_str()); } |
| 920 | |
| 921 | /** |
| 922 | * @{ |
| 923 | * @brief Compares this sub_match to a string. |
| 924 | * |
| 925 | * @param __s A string to compare to this sub_match. |
| 926 | * |
| 927 | * @retval <0 this matched sequence will collate before @p __s. |
| 928 | * @retval =0 this matched sequence is equivalent to @p __s. |
| 929 | * @retval <0 this matched sequence will collate after @p __s. |
| 930 | */ |
| 931 | int |
| 932 | compare(const string_type& __s) const |
| 933 | { return this->_M_str().compare(__s); } |
| 934 | |
| 935 | int |
| 936 | compare(const value_type* __s) const |
| 937 | { return this->_M_str().compare(__s); } |
| 938 | // @} |
| 939 | |
| 940 | // Non-standard, used by comparison operators |
| 941 | int |
| 942 | _M_compare(const value_type* __s, size_t __n) const |
| 943 | { return this->_M_str().compare({__s, __n}); } |
| 944 | |
| 945 | private: |
| 946 | // Simplified basic_string_view for C++11 |
| 947 | struct __string_view |
| 948 | { |
| 949 | using traits_type = typename string_type::traits_type; |
| 950 | |
| 951 | __string_view() = default; |
| 952 | |
| 953 | __string_view(const value_type* __s, size_t __n) noexcept |
| 954 | : _M_data(__s), _M_len(__n) { } |
| 955 | |
| 956 | __string_view(const value_type* __s) noexcept |
| 957 | : _M_data(__s), _M_len(traits_type::length(__s)) { } |
| 958 | |
| 959 | __string_view(const string_type& __s) noexcept |
| 960 | : _M_data(__s.data()), _M_len(__s.length()) { } |
| 961 | |
| 962 | int |
| 963 | compare(__string_view __s) const noexcept |
| 964 | { |
| 965 | if (const size_t __n = std::min(_M_len, __s._M_len)) |
| 966 | if (int __ret = traits_type::compare(_M_data, __s._M_data, __n)) |
| 967 | return __ret; |
| 968 | const difference_type __diff = _M_len - __s._M_len; |
| 969 | if (__diff > std::numeric_limits<int>::max()) |
| 970 | return std::numeric_limits<int>::max(); |
| 971 | if (__diff < std::numeric_limits<int>::min()) |
| 972 | return std::numeric_limits<int>::min(); |
| 973 | return static_cast<int>(__diff); |
| 974 | } |
| 975 | |
| 976 | private: |
| 977 | const value_type* _M_data = nullptr; |
| 978 | size_t _M_len = 0; |
| 979 | }; |
| 980 | |
| 981 | // Create a __string_view over the iterator range. |
| 982 | template<typename _Iter = _BiIter> |
| 983 | __enable_if_t<__detail::__is_contiguous_iter<_Iter>::value, |
| 984 | __string_view> |
| 985 | _M_str() const noexcept |
| 986 | { |
| 987 | if (this->matched) |
| 988 | if (auto __len = this->second - this->first) |
| 989 | return { std::__addressof(*this->first), __len }; |
| 990 | return {}; |
| 991 | } |
| 992 | |
| 993 | // Create a temporary string that can be converted to __string_view. |
| 994 | template<typename _Iter = _BiIter> |
| 995 | __enable_if_t<!__detail::__is_contiguous_iter<_Iter>::value, |
| 996 | string_type> |
| 997 | _M_str() const |
| 998 | { return str(); } |
| 999 | }; |
| 1000 | |
| 1001 | |
| 1002 | /** @brief Standard regex submatch over a C-style null-terminated string. */ |
| 1003 | typedef sub_match<const char*> csub_match; |
| 1004 | |
| 1005 | /** @brief Standard regex submatch over a standard string. */ |
| 1006 | typedef sub_match<string::const_iterator> ssub_match; |
| 1007 | |
| 1008 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 1009 | /** @brief Regex submatch over a C-style null-terminated wide string. */ |
| 1010 | typedef sub_match<const wchar_t*> wcsub_match; |
| 1011 | |
| 1012 | /** @brief Regex submatch over a standard wide string. */ |
| 1013 | typedef sub_match<wstring::const_iterator> wssub_match; |
| 1014 | #endif |
| 1015 | |
| 1016 | // [7.9.2] sub_match non-member operators |
| 1017 | |
| 1018 | /** |
| 1019 | * @brief Tests the equivalence of two regular expression submatches. |
| 1020 | * @param __lhs First regular expression submatch. |
| 1021 | * @param __rhs Second regular expression submatch. |
| 1022 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1023 | */ |
| 1024 | template<typename _BiIter> |
| 1025 | inline bool |
| 1026 | operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1027 | { return __lhs.compare(__rhs) == 0; } |
| 1028 | |
| 1029 | /** |
| 1030 | * @brief Tests the inequivalence of two regular expression submatches. |
| 1031 | * @param __lhs First regular expression submatch. |
| 1032 | * @param __rhs Second regular expression submatch. |
| 1033 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1034 | */ |
| 1035 | template<typename _BiIter> |
| 1036 | inline bool |
| 1037 | operator!=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1038 | { return __lhs.compare(__rhs) != 0; } |
| 1039 | |
| 1040 | /** |
| 1041 | * @brief Tests the ordering of two regular expression submatches. |
| 1042 | * @param __lhs First regular expression submatch. |
| 1043 | * @param __rhs Second regular expression submatch. |
| 1044 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1045 | */ |
| 1046 | template<typename _BiIter> |
| 1047 | inline bool |
| 1048 | operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1049 | { return __lhs.compare(__rhs) < 0; } |
| 1050 | |
| 1051 | /** |
| 1052 | * @brief Tests the ordering of two regular expression submatches. |
| 1053 | * @param __lhs First regular expression submatch. |
| 1054 | * @param __rhs Second regular expression submatch. |
| 1055 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1056 | */ |
| 1057 | template<typename _BiIter> |
| 1058 | inline bool |
| 1059 | operator<=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1060 | { return __lhs.compare(__rhs) <= 0; } |
| 1061 | |
| 1062 | /** |
| 1063 | * @brief Tests the ordering of two regular expression submatches. |
| 1064 | * @param __lhs First regular expression submatch. |
| 1065 | * @param __rhs Second regular expression submatch. |
| 1066 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1067 | */ |
| 1068 | template<typename _BiIter> |
| 1069 | inline bool |
| 1070 | operator>=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1071 | { return __lhs.compare(__rhs) >= 0; } |
| 1072 | |
| 1073 | /** |
| 1074 | * @brief Tests the ordering of two regular expression submatches. |
| 1075 | * @param __lhs First regular expression submatch. |
| 1076 | * @param __rhs Second regular expression submatch. |
| 1077 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1078 | */ |
| 1079 | template<typename _BiIter> |
| 1080 | inline bool |
| 1081 | operator>(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) |
| 1082 | { return __lhs.compare(__rhs) > 0; } |
| 1083 | |
| 1084 | // Alias for a basic_string that can be compared to a sub_match. |
| 1085 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1086 | using __sub_match_string = basic_string< |
| 1087 | typename iterator_traits<_Bi_iter>::value_type, |
| 1088 | _Ch_traits, _Ch_alloc>; |
| 1089 | |
| 1090 | /** |
| 1091 | * @brief Tests the equivalence of a string and a regular expression |
| 1092 | * submatch. |
| 1093 | * @param __lhs A string. |
| 1094 | * @param __rhs A regular expression submatch. |
| 1095 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1096 | */ |
| 1097 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1098 | inline bool |
| 1099 | operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1100 | const sub_match<_Bi_iter>& __rhs) |
| 1101 | { return __rhs._M_compare(__lhs.data(), __lhs.size()) == 0; } |
| 1102 | |
| 1103 | /** |
| 1104 | * @brief Tests the inequivalence of a string and a regular expression |
| 1105 | * submatch. |
| 1106 | * @param __lhs A string. |
| 1107 | * @param __rhs A regular expression submatch. |
| 1108 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1109 | */ |
| 1110 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1111 | inline bool |
| 1112 | operator!=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1113 | const sub_match<_Bi_iter>& __rhs) |
| 1114 | { return !(__lhs == __rhs); } |
| 1115 | |
| 1116 | /** |
| 1117 | * @brief Tests the ordering of a string and a regular expression submatch. |
| 1118 | * @param __lhs A string. |
| 1119 | * @param __rhs A regular expression submatch. |
| 1120 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1121 | */ |
| 1122 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1123 | inline bool |
| 1124 | operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1125 | const sub_match<_Bi_iter>& __rhs) |
| 1126 | { return __rhs._M_compare(__lhs.data(), __lhs.size()) > 0; } |
| 1127 | |
| 1128 | /** |
| 1129 | * @brief Tests the ordering of a string and a regular expression submatch. |
| 1130 | * @param __lhs A string. |
| 1131 | * @param __rhs A regular expression submatch. |
| 1132 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1133 | */ |
| 1134 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1135 | inline bool |
| 1136 | operator>(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1137 | const sub_match<_Bi_iter>& __rhs) |
| 1138 | { return __rhs < __lhs; } |
| 1139 | |
| 1140 | /** |
| 1141 | * @brief Tests the ordering of a string and a regular expression submatch. |
| 1142 | * @param __lhs A string. |
| 1143 | * @param __rhs A regular expression submatch. |
| 1144 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1145 | */ |
| 1146 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1147 | inline bool |
| 1148 | operator>=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1149 | const sub_match<_Bi_iter>& __rhs) |
| 1150 | { return !(__lhs < __rhs); } |
| 1151 | |
| 1152 | /** |
| 1153 | * @brief Tests the ordering of a string and a regular expression submatch. |
| 1154 | * @param __lhs A string. |
| 1155 | * @param __rhs A regular expression submatch. |
| 1156 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1157 | */ |
| 1158 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1159 | inline bool |
| 1160 | operator<=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, |
| 1161 | const sub_match<_Bi_iter>& __rhs) |
| 1162 | { return !(__rhs < __lhs); } |
| 1163 | |
| 1164 | /** |
| 1165 | * @brief Tests the equivalence of a regular expression submatch and a |
| 1166 | * string. |
| 1167 | * @param __lhs A regular expression submatch. |
| 1168 | * @param __rhs A string. |
| 1169 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1170 | */ |
| 1171 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1172 | inline bool |
| 1173 | operator==(const sub_match<_Bi_iter>& __lhs, |
| 1174 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1175 | { return __lhs._M_compare(__rhs.data(), __rhs.size()) == 0; } |
| 1176 | |
| 1177 | /** |
| 1178 | * @brief Tests the inequivalence of a regular expression submatch and a |
| 1179 | * string. |
| 1180 | * @param __lhs A regular expression submatch. |
| 1181 | * @param __rhs A string. |
| 1182 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1183 | */ |
| 1184 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1185 | inline bool |
| 1186 | operator!=(const sub_match<_Bi_iter>& __lhs, |
| 1187 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1188 | { return !(__lhs == __rhs); } |
| 1189 | |
| 1190 | /** |
| 1191 | * @brief Tests the ordering of a regular expression submatch and a string. |
| 1192 | * @param __lhs A regular expression submatch. |
| 1193 | * @param __rhs A string. |
| 1194 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1195 | */ |
| 1196 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1197 | inline bool |
| 1198 | operator<(const sub_match<_Bi_iter>& __lhs, |
| 1199 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1200 | { return __lhs._M_compare(__rhs.data(), __rhs.size()) < 0; } |
| 1201 | |
| 1202 | /** |
| 1203 | * @brief Tests the ordering of a regular expression submatch and a string. |
| 1204 | * @param __lhs A regular expression submatch. |
| 1205 | * @param __rhs A string. |
| 1206 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1207 | */ |
| 1208 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1209 | inline bool |
| 1210 | operator>(const sub_match<_Bi_iter>& __lhs, |
| 1211 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1212 | { return __rhs < __lhs; } |
| 1213 | |
| 1214 | /** |
| 1215 | * @brief Tests the ordering of a regular expression submatch and a string. |
| 1216 | * @param __lhs A regular expression submatch. |
| 1217 | * @param __rhs A string. |
| 1218 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1219 | */ |
| 1220 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1221 | inline bool |
| 1222 | operator>=(const sub_match<_Bi_iter>& __lhs, |
| 1223 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1224 | { return !(__lhs < __rhs); } |
| 1225 | |
| 1226 | /** |
| 1227 | * @brief Tests the ordering of a regular expression submatch and a string. |
| 1228 | * @param __lhs A regular expression submatch. |
| 1229 | * @param __rhs A string. |
| 1230 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1231 | */ |
| 1232 | template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc> |
| 1233 | inline bool |
| 1234 | operator<=(const sub_match<_Bi_iter>& __lhs, |
| 1235 | const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs) |
| 1236 | { return !(__rhs < __lhs); } |
| 1237 | |
| 1238 | /** |
| 1239 | * @brief Tests the equivalence of a C string and a regular expression |
| 1240 | * submatch. |
| 1241 | * @param __lhs A null-terminated string. |
| 1242 | * @param __rhs A regular expression submatch. |
| 1243 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1244 | */ |
| 1245 | template<typename _Bi_iter> |
| 1246 | inline bool |
| 1247 | operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1248 | const sub_match<_Bi_iter>& __rhs) |
| 1249 | { return __rhs.compare(__lhs) == 0; } |
| 1250 | |
| 1251 | /** |
| 1252 | * @brief Tests the inequivalence of a C string and a regular |
| 1253 | * expression submatch. |
| 1254 | * @param __lhs A null-terminated string. |
| 1255 | * @param __rhs A regular expression submatch. |
| 1256 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1257 | */ |
| 1258 | template<typename _Bi_iter> |
| 1259 | inline bool |
| 1260 | operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1261 | const sub_match<_Bi_iter>& __rhs) |
| 1262 | { return !(__lhs == __rhs); } |
| 1263 | |
| 1264 | /** |
| 1265 | * @brief Tests the ordering of a C string and a regular expression submatch. |
| 1266 | * @param __lhs A null-terminated string. |
| 1267 | * @param __rhs A regular expression submatch. |
| 1268 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1269 | */ |
| 1270 | template<typename _Bi_iter> |
| 1271 | inline bool |
| 1272 | operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1273 | const sub_match<_Bi_iter>& __rhs) |
| 1274 | { return __rhs.compare(__lhs) > 0; } |
| 1275 | |
| 1276 | /** |
| 1277 | * @brief Tests the ordering of a C string and a regular expression submatch. |
| 1278 | * @param __lhs A null-terminated string. |
| 1279 | * @param __rhs A regular expression submatch. |
| 1280 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1281 | */ |
| 1282 | template<typename _Bi_iter> |
| 1283 | inline bool |
| 1284 | operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1285 | const sub_match<_Bi_iter>& __rhs) |
| 1286 | { return __rhs < __lhs; } |
| 1287 | |
| 1288 | /** |
| 1289 | * @brief Tests the ordering of a C string and a regular expression submatch. |
| 1290 | * @param __lhs A null-terminated string. |
| 1291 | * @param __rhs A regular expression submatch. |
| 1292 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1293 | */ |
| 1294 | template<typename _Bi_iter> |
| 1295 | inline bool |
| 1296 | operator>=(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1297 | const sub_match<_Bi_iter>& __rhs) |
| 1298 | { return !(__lhs < __rhs); } |
| 1299 | |
| 1300 | /** |
| 1301 | * @brief Tests the ordering of a C string and a regular expression submatch. |
| 1302 | * @param __lhs A null-terminated string. |
| 1303 | * @param __rhs A regular expression submatch. |
| 1304 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1305 | */ |
| 1306 | template<typename _Bi_iter> |
| 1307 | inline bool |
| 1308 | operator<=(typename iterator_traits<_Bi_iter>::value_type const* __lhs, |
| 1309 | const sub_match<_Bi_iter>& __rhs) |
| 1310 | { return !(__rhs < __lhs); } |
| 1311 | |
| 1312 | /** |
| 1313 | * @brief Tests the equivalence of a regular expression submatch and a C |
| 1314 | * string. |
| 1315 | * @param __lhs A regular expression submatch. |
| 1316 | * @param __rhs A null-terminated string. |
| 1317 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1318 | */ |
| 1319 | template<typename _Bi_iter> |
| 1320 | inline bool |
| 1321 | operator==(const sub_match<_Bi_iter>& __lhs, |
| 1322 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1323 | { return __lhs.compare(__rhs) == 0; } |
| 1324 | |
| 1325 | /** |
| 1326 | * @brief Tests the inequivalence of a regular expression submatch and a |
| 1327 | * string. |
| 1328 | * @param __lhs A regular expression submatch. |
| 1329 | * @param __rhs A null-terminated string. |
| 1330 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1331 | */ |
| 1332 | template<typename _Bi_iter> |
| 1333 | inline bool |
| 1334 | operator!=(const sub_match<_Bi_iter>& __lhs, |
| 1335 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1336 | { return !(__lhs == __rhs); } |
| 1337 | |
| 1338 | /** |
| 1339 | * @brief Tests the ordering of a regular expression submatch and a C string. |
| 1340 | * @param __lhs A regular expression submatch. |
| 1341 | * @param __rhs A null-terminated string. |
| 1342 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1343 | */ |
| 1344 | template<typename _Bi_iter> |
| 1345 | inline bool |
| 1346 | operator<(const sub_match<_Bi_iter>& __lhs, |
| 1347 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1348 | { return __lhs.compare(__rhs) < 0; } |
| 1349 | |
| 1350 | /** |
| 1351 | * @brief Tests the ordering of a regular expression submatch and a C string. |
| 1352 | * @param __lhs A regular expression submatch. |
| 1353 | * @param __rhs A null-terminated string. |
| 1354 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1355 | */ |
| 1356 | template<typename _Bi_iter> |
| 1357 | inline bool |
| 1358 | operator>(const sub_match<_Bi_iter>& __lhs, |
| 1359 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1360 | { return __rhs < __lhs; } |
| 1361 | |
| 1362 | /** |
| 1363 | * @brief Tests the ordering of a regular expression submatch and a C string. |
| 1364 | * @param __lhs A regular expression submatch. |
| 1365 | * @param __rhs A null-terminated string. |
| 1366 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1367 | */ |
| 1368 | template<typename _Bi_iter> |
| 1369 | inline bool |
| 1370 | operator>=(const sub_match<_Bi_iter>& __lhs, |
| 1371 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1372 | { return !(__lhs < __rhs); } |
| 1373 | |
| 1374 | /** |
| 1375 | * @brief Tests the ordering of a regular expression submatch and a C string. |
| 1376 | * @param __lhs A regular expression submatch. |
| 1377 | * @param __rhs A null-terminated string. |
| 1378 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1379 | */ |
| 1380 | template<typename _Bi_iter> |
| 1381 | inline bool |
| 1382 | operator<=(const sub_match<_Bi_iter>& __lhs, |
| 1383 | typename iterator_traits<_Bi_iter>::value_type const* __rhs) |
| 1384 | { return !(__rhs < __lhs); } |
| 1385 | |
| 1386 | /** |
| 1387 | * @brief Tests the equivalence of a character and a regular expression |
| 1388 | * submatch. |
| 1389 | * @param __lhs A character. |
| 1390 | * @param __rhs A regular expression submatch. |
| 1391 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1392 | */ |
| 1393 | template<typename _Bi_iter> |
| 1394 | inline bool |
| 1395 | operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1396 | const sub_match<_Bi_iter>& __rhs) |
| 1397 | { return __rhs._M_compare(std::__addressof(__lhs), 1) == 0; } |
| 1398 | |
| 1399 | /** |
| 1400 | * @brief Tests the inequivalence of a character and a regular expression |
| 1401 | * submatch. |
| 1402 | * @param __lhs A character. |
| 1403 | * @param __rhs A regular expression submatch. |
| 1404 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1405 | */ |
| 1406 | template<typename _Bi_iter> |
| 1407 | inline bool |
| 1408 | operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1409 | const sub_match<_Bi_iter>& __rhs) |
| 1410 | { return !(__lhs == __rhs); } |
| 1411 | |
| 1412 | /** |
| 1413 | * @brief Tests the ordering of a character and a regular expression |
| 1414 | * submatch. |
| 1415 | * @param __lhs A character. |
| 1416 | * @param __rhs A regular expression submatch. |
| 1417 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1418 | */ |
| 1419 | template<typename _Bi_iter> |
| 1420 | inline bool |
| 1421 | operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1422 | const sub_match<_Bi_iter>& __rhs) |
| 1423 | { return __rhs._M_compare(std::__addressof(__lhs), 1) > 0; } |
| 1424 | |
| 1425 | /** |
| 1426 | * @brief Tests the ordering of a character and a regular expression |
| 1427 | * submatch. |
| 1428 | * @param __lhs A character. |
| 1429 | * @param __rhs A regular expression submatch. |
| 1430 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1431 | */ |
| 1432 | template<typename _Bi_iter> |
| 1433 | inline bool |
| 1434 | operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1435 | const sub_match<_Bi_iter>& __rhs) |
| 1436 | { return __rhs < __lhs; } |
| 1437 | |
| 1438 | /** |
| 1439 | * @brief Tests the ordering of a character and a regular expression |
| 1440 | * submatch. |
| 1441 | * @param __lhs A character. |
| 1442 | * @param __rhs A regular expression submatch. |
| 1443 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1444 | */ |
| 1445 | template<typename _Bi_iter> |
| 1446 | inline bool |
| 1447 | operator>=(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1448 | const sub_match<_Bi_iter>& __rhs) |
| 1449 | { return !(__lhs < __rhs); } |
| 1450 | |
| 1451 | /** |
| 1452 | * @brief Tests the ordering of a character and a regular expression |
| 1453 | * submatch. |
| 1454 | * @param __lhs A character. |
| 1455 | * @param __rhs A regular expression submatch. |
| 1456 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1457 | */ |
| 1458 | template<typename _Bi_iter> |
| 1459 | inline bool |
| 1460 | operator<=(typename iterator_traits<_Bi_iter>::value_type const& __lhs, |
| 1461 | const sub_match<_Bi_iter>& __rhs) |
| 1462 | { return !(__rhs < __lhs); } |
| 1463 | |
| 1464 | /** |
| 1465 | * @brief Tests the equivalence of a regular expression submatch and a |
| 1466 | * character. |
| 1467 | * @param __lhs A regular expression submatch. |
| 1468 | * @param __rhs A character. |
| 1469 | * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise. |
| 1470 | */ |
| 1471 | template<typename _Bi_iter> |
| 1472 | inline bool |
| 1473 | operator==(const sub_match<_Bi_iter>& __lhs, |
| 1474 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1475 | { return __lhs._M_compare(std::__addressof(__rhs), 1) == 0; } |
| 1476 | |
| 1477 | /** |
| 1478 | * @brief Tests the inequivalence of a regular expression submatch and a |
| 1479 | * character. |
| 1480 | * @param __lhs A regular expression submatch. |
| 1481 | * @param __rhs A character. |
| 1482 | * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise. |
| 1483 | */ |
| 1484 | template<typename _Bi_iter> |
| 1485 | inline bool |
| 1486 | operator!=(const sub_match<_Bi_iter>& __lhs, |
| 1487 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1488 | { return !(__lhs == __rhs); } |
| 1489 | |
| 1490 | /** |
| 1491 | * @brief Tests the ordering of a regular expression submatch and a |
| 1492 | * character. |
| 1493 | * @param __lhs A regular expression submatch. |
| 1494 | * @param __rhs A character. |
| 1495 | * @returns true if @a __lhs precedes @a __rhs, false otherwise. |
| 1496 | */ |
| 1497 | template<typename _Bi_iter> |
| 1498 | inline bool |
| 1499 | operator<(const sub_match<_Bi_iter>& __lhs, |
| 1500 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1501 | { return __lhs._M_compare(std::__addressof(__rhs), 1) < 0; } |
| 1502 | |
| 1503 | /** |
| 1504 | * @brief Tests the ordering of a regular expression submatch and a |
| 1505 | * character. |
| 1506 | * @param __lhs A regular expression submatch. |
| 1507 | * @param __rhs A character. |
| 1508 | * @returns true if @a __lhs succeeds @a __rhs, false otherwise. |
| 1509 | */ |
| 1510 | template<typename _Bi_iter> |
| 1511 | inline bool |
| 1512 | operator>(const sub_match<_Bi_iter>& __lhs, |
| 1513 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1514 | { return __rhs < __lhs; } |
| 1515 | |
| 1516 | /** |
| 1517 | * @brief Tests the ordering of a regular expression submatch and a |
| 1518 | * character. |
| 1519 | * @param __lhs A regular expression submatch. |
| 1520 | * @param __rhs A character. |
| 1521 | * @returns true if @a __lhs does not precede @a __rhs, false otherwise. |
| 1522 | */ |
| 1523 | template<typename _Bi_iter> |
| 1524 | inline bool |
| 1525 | operator>=(const sub_match<_Bi_iter>& __lhs, |
| 1526 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1527 | { return !(__lhs < __rhs); } |
| 1528 | |
| 1529 | /** |
| 1530 | * @brief Tests the ordering of a regular expression submatch and a |
| 1531 | * character. |
| 1532 | * @param __lhs A regular expression submatch. |
| 1533 | * @param __rhs A character. |
| 1534 | * @returns true if @a __lhs does not succeed @a __rhs, false otherwise. |
| 1535 | */ |
| 1536 | template<typename _Bi_iter> |
| 1537 | inline bool |
| 1538 | operator<=(const sub_match<_Bi_iter>& __lhs, |
| 1539 | typename iterator_traits<_Bi_iter>::value_type const& __rhs) |
| 1540 | { return !(__rhs < __lhs); } |
| 1541 | |
| 1542 | /** |
| 1543 | * @brief Inserts a matched string into an output stream. |
| 1544 | * |
| 1545 | * @param __os The output stream. |
| 1546 | * @param __m A submatch string. |
| 1547 | * |
| 1548 | * @returns the output stream with the submatch string inserted. |
| 1549 | */ |
| 1550 | template<typename _Ch_type, typename _Ch_traits, typename _Bi_iter> |
| 1551 | inline |
| 1552 | basic_ostream<_Ch_type, _Ch_traits>& |
| 1553 | operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os, |
| 1554 | const sub_match<_Bi_iter>& __m) |
| 1555 | { return __os << __m.str(); } |
| 1556 | |
| 1557 | // [7.10] Class template match_results |
| 1558 | |
| 1559 | /** |
| 1560 | * @brief The results of a match or search operation. |
| 1561 | * |
| 1562 | * A collection of character sequences representing the result of a regular |
| 1563 | * expression match. Storage for the collection is allocated and freed as |
| 1564 | * necessary by the member functions of class template match_results. |
| 1565 | * |
| 1566 | * This class satisfies the Sequence requirements, with the exception that |
| 1567 | * only the operations defined for a const-qualified Sequence are supported. |
| 1568 | * |
| 1569 | * The sub_match object stored at index 0 represents sub-expression 0, i.e. |
| 1570 | * the whole match. In this case the %sub_match member matched is always true. |
| 1571 | * The sub_match object stored at index n denotes what matched the marked |
| 1572 | * sub-expression n within the matched expression. If the sub-expression n |
| 1573 | * participated in a regular expression match then the %sub_match member |
| 1574 | * matched evaluates to true, and members first and second denote the range |
| 1575 | * of characters [first, second) which formed that match. Otherwise matched |
| 1576 | * is false, and members first and second point to the end of the sequence |
| 1577 | * that was searched. |
| 1578 | * |
| 1579 | * @nosubgrouping |
| 1580 | */ |
| 1581 | template<typename _Bi_iter, |
| 1582 | typename _Alloc = allocator<sub_match<_Bi_iter> > > |
| 1583 | class match_results |
| 1584 | : private std::vector<sub_match<_Bi_iter>, _Alloc> |
| 1585 | { |
| 1586 | private: |
| 1587 | /* |
| 1588 | * The vector base is empty if this does not represent a match (!ready()); |
| 1589 | * Otherwise if it's a match failure, it contains 3 elements: |
| 1590 | * [0] unmatched |
| 1591 | * [1] prefix |
| 1592 | * [2] suffix |
| 1593 | * Otherwise it contains n+4 elements where n is the number of marked |
| 1594 | * sub-expressions: |
| 1595 | * [0] entire match |
| 1596 | * [1] 1st marked subexpression |
| 1597 | * ... |
| 1598 | * [n] nth marked subexpression |
| 1599 | * [n+1] unmatched |
| 1600 | * [n+2] prefix |
| 1601 | * [n+3] suffix |
| 1602 | */ |
| 1603 | typedef std::vector<sub_match<_Bi_iter>, _Alloc> _Base_type; |
| 1604 | typedef std::iterator_traits<_Bi_iter> __iter_traits; |
| 1605 | typedef regex_constants::match_flag_type match_flag_type; |
| 1606 | |
| 1607 | public: |
| 1608 | /** |
| 1609 | * @name 10.? Public Types |
| 1610 | */ |
| 1611 | //@{ |
| 1612 | typedef sub_match<_Bi_iter> value_type; |
| 1613 | typedef const value_type& const_reference; |
| 1614 | typedef value_type& reference; |
| 1615 | typedef typename _Base_type::const_iterator const_iterator; |
| 1616 | typedef const_iterator iterator; |
| 1617 | typedef typename __iter_traits::difference_type difference_type; |
| 1618 | typedef typename allocator_traits<_Alloc>::size_type size_type; |
| 1619 | typedef _Alloc allocator_type; |
| 1620 | typedef typename __iter_traits::value_type char_type; |
| 1621 | typedef std::basic_string<char_type> string_type; |
| 1622 | //@} |
| 1623 | |
| 1624 | public: |
| 1625 | /** |
| 1626 | * @name 28.10.1 Construction, Copying, and Destruction |
| 1627 | */ |
| 1628 | //@{ |
| 1629 | |
| 1630 | /** |
| 1631 | * @brief Constructs a default %match_results container. |
| 1632 | * @post size() returns 0 and str() returns an empty string. |
| 1633 | * @{ |
| 1634 | */ |
| 1635 | match_results() : match_results(_Alloc()) { } |
| 1636 | |
| 1637 | explicit |
| 1638 | match_results(const _Alloc& __a) noexcept |
| 1639 | : _Base_type(__a) |
| 1640 | { } |
| 1641 | |
| 1642 | // @} |
| 1643 | |
| 1644 | /** |
| 1645 | * @brief Copy constructs a %match_results. |
| 1646 | */ |
| 1647 | match_results(const match_results&) = default; |
| 1648 | |
| 1649 | /** |
| 1650 | * @brief Move constructs a %match_results. |
| 1651 | */ |
| 1652 | match_results(match_results&&) noexcept = default; |
| 1653 | |
| 1654 | /** |
| 1655 | * @brief Assigns rhs to *this. |
| 1656 | */ |
| 1657 | match_results& |
| 1658 | operator=(const match_results&) = default; |
| 1659 | |
| 1660 | /** |
| 1661 | * @brief Move-assigns rhs to *this. |
| 1662 | */ |
| 1663 | match_results& |
| 1664 | operator=(match_results&&) = default; |
| 1665 | |
| 1666 | /** |
| 1667 | * @brief Destroys a %match_results object. |
| 1668 | */ |
| 1669 | ~match_results() = default; |
| 1670 | |
| 1671 | //@} |
| 1672 | |
| 1673 | // 28.10.2, state: |
| 1674 | /** |
| 1675 | * @brief Indicates if the %match_results is ready. |
| 1676 | * @retval true The object has a fully-established result state. |
| 1677 | * @retval false The object is not ready. |
| 1678 | */ |
| 1679 | bool ready() const noexcept { return !_Base_type::empty(); } |
| 1680 | |
| 1681 | /** |
| 1682 | * @name 28.10.2 Size |
| 1683 | */ |
| 1684 | //@{ |
| 1685 | |
| 1686 | /** |
| 1687 | * @brief Gets the number of matches and submatches. |
| 1688 | * |
| 1689 | * The number of matches for a given regular expression will be either 0 |
| 1690 | * if there was no match or mark_count() + 1 if a match was successful. |
| 1691 | * Some matches may be empty. |
| 1692 | * |
| 1693 | * @returns the number of matches found. |
| 1694 | */ |
| 1695 | size_type |
| 1696 | size() const noexcept |
| 1697 | { return _Base_type::empty() ? 0 : _Base_type::size() - 3; } |
| 1698 | |
| 1699 | size_type |
| 1700 | max_size() const noexcept |
| 1701 | { return _Base_type::max_size(); } |
| 1702 | |
| 1703 | /** |
| 1704 | * @brief Indicates if the %match_results contains no results. |
| 1705 | * @retval true The %match_results object is empty. |
| 1706 | * @retval false The %match_results object is not empty. |
| 1707 | */ |
| 1708 | _GLIBCXX_NODISCARD bool |
| 1709 | empty() const noexcept |
| 1710 | { return size() == 0; } |
| 1711 | |
| 1712 | //@} |
| 1713 | |
| 1714 | /** |
| 1715 | * @name 10.3 Element Access |
| 1716 | */ |
| 1717 | //@{ |
| 1718 | |
| 1719 | /** |
| 1720 | * @brief Gets the length of the indicated submatch. |
| 1721 | * @param __sub indicates the submatch. |
| 1722 | * @pre ready() == true |
| 1723 | * |
| 1724 | * This function returns the length of the indicated submatch, or the |
| 1725 | * length of the entire match if @p __sub is zero (the default). |
| 1726 | */ |
| 1727 | difference_type |
| 1728 | length(size_type __sub = 0) const |
| 1729 | { return (*this)[__sub].length(); } |
| 1730 | |
| 1731 | /** |
| 1732 | * @brief Gets the offset of the beginning of the indicated submatch. |
| 1733 | * @param __sub indicates the submatch. |
| 1734 | * @pre ready() == true |
| 1735 | * |
| 1736 | * This function returns the offset from the beginning of the target |
| 1737 | * sequence to the beginning of the submatch, unless the value of @p __sub |
| 1738 | * is zero (the default), in which case this function returns the offset |
| 1739 | * from the beginning of the target sequence to the beginning of the |
| 1740 | * match. |
| 1741 | */ |
| 1742 | difference_type |
| 1743 | position(size_type __sub = 0) const |
| 1744 | { return std::distance(_M_begin, (*this)[__sub].first); } |
| 1745 | |
| 1746 | /** |
| 1747 | * @brief Gets the match or submatch converted to a string type. |
| 1748 | * @param __sub indicates the submatch. |
| 1749 | * @pre ready() == true |
| 1750 | * |
| 1751 | * This function gets the submatch (or match, if @p __sub is |
| 1752 | * zero) extracted from the target range and converted to the |
| 1753 | * associated string type. |
| 1754 | */ |
| 1755 | string_type |
| 1756 | str(size_type __sub = 0) const |
| 1757 | { return string_type((*this)[__sub]); } |
| 1758 | |
| 1759 | /** |
| 1760 | * @brief Gets a %sub_match reference for the match or submatch. |
| 1761 | * @param __sub indicates the submatch. |
| 1762 | * @pre ready() == true |
| 1763 | * |
| 1764 | * This function gets a reference to the indicated submatch, or |
| 1765 | * the entire match if @p __sub is zero. |
| 1766 | * |
| 1767 | * If @p __sub >= size() then this function returns a %sub_match with a |
| 1768 | * special value indicating no submatch. |
| 1769 | */ |
| 1770 | const_reference |
| 1771 | operator[](size_type __sub) const |
| 1772 | { |
| 1773 | __glibcxx_assert( ready() ); |
| 1774 | return __sub < size() |
| 1775 | ? _Base_type::operator[](__sub) |
| 1776 | : _M_unmatched_sub(); |
| 1777 | } |
| 1778 | |
| 1779 | /** |
| 1780 | * @brief Gets a %sub_match representing the match prefix. |
| 1781 | * @pre ready() == true |
| 1782 | * |
| 1783 | * This function gets a reference to a %sub_match object representing the |
| 1784 | * part of the target range between the start of the target range and the |
| 1785 | * start of the match. |
| 1786 | */ |
| 1787 | const_reference |
| 1788 | prefix() const |
| 1789 | { |
| 1790 | __glibcxx_assert( ready() ); |
| 1791 | return !empty() ? _M_prefix() : _M_unmatched_sub(); |
| 1792 | } |
| 1793 | |
| 1794 | /** |
| 1795 | * @brief Gets a %sub_match representing the match suffix. |
| 1796 | * @pre ready() == true |
| 1797 | * |
| 1798 | * This function gets a reference to a %sub_match object representing the |
| 1799 | * part of the target range between the end of the match and the end of |
| 1800 | * the target range. |
| 1801 | */ |
| 1802 | const_reference |
| 1803 | suffix() const |
| 1804 | { |
| 1805 | __glibcxx_assert( ready() ); |
| 1806 | return !empty() ? _M_suffix() : _M_unmatched_sub(); |
| 1807 | } |
| 1808 | |
| 1809 | /** |
| 1810 | * @brief Gets an iterator to the start of the %sub_match collection. |
| 1811 | */ |
| 1812 | const_iterator |
| 1813 | begin() const noexcept |
| 1814 | { return _Base_type::begin(); } |
| 1815 | |
| 1816 | /** |
| 1817 | * @brief Gets an iterator to the start of the %sub_match collection. |
| 1818 | */ |
| 1819 | const_iterator |
| 1820 | cbegin() const noexcept |
| 1821 | { return this->begin(); } |
| 1822 | |
| 1823 | /** |
| 1824 | * @brief Gets an iterator to one-past-the-end of the collection. |
| 1825 | */ |
| 1826 | const_iterator |
| 1827 | end() const noexcept |
| 1828 | { return _Base_type::end() - (empty() ? 0 : 3); } |
| 1829 | |
| 1830 | /** |
| 1831 | * @brief Gets an iterator to one-past-the-end of the collection. |
| 1832 | */ |
| 1833 | const_iterator |
| 1834 | cend() const noexcept |
| 1835 | { return this->end(); } |
| 1836 | |
| 1837 | //@} |
| 1838 | |
| 1839 | /** |
| 1840 | * @name 10.4 Formatting |
| 1841 | * |
| 1842 | * These functions perform formatted substitution of the matched |
| 1843 | * character sequences into their target. The format specifiers and |
| 1844 | * escape sequences accepted by these functions are determined by |
| 1845 | * their @p flags parameter as documented above. |
| 1846 | */ |
| 1847 | //@{ |
| 1848 | |
| 1849 | /** |
| 1850 | * @pre ready() == true |
| 1851 | */ |
| 1852 | template<typename _Out_iter> |
| 1853 | _Out_iter |
| 1854 | format(_Out_iter __out, const char_type* __fmt_first, |
| 1855 | const char_type* __fmt_last, |
| 1856 | match_flag_type __flags = regex_constants::format_default) const; |
| 1857 | |
| 1858 | /** |
| 1859 | * @pre ready() == true |
| 1860 | */ |
| 1861 | template<typename _Out_iter, typename _St, typename _Sa> |
| 1862 | _Out_iter |
| 1863 | format(_Out_iter __out, const basic_string<char_type, _St, _Sa>& __fmt, |
| 1864 | match_flag_type __flags = regex_constants::format_default) const |
| 1865 | { |
| 1866 | return format(__out, __fmt.data(), __fmt.data() + __fmt.size(), |
| 1867 | __flags); |
| 1868 | } |
| 1869 | |
| 1870 | /** |
| 1871 | * @pre ready() == true |
| 1872 | */ |
| 1873 | template<typename _St, typename _Sa> |
| 1874 | basic_string<char_type, _St, _Sa> |
| 1875 | format(const basic_string<char_type, _St, _Sa>& __fmt, |
| 1876 | match_flag_type __flags = regex_constants::format_default) const |
| 1877 | { |
| 1878 | basic_string<char_type, _St, _Sa> __result; |
| 1879 | format(std::back_inserter(__result), __fmt, __flags); |
| 1880 | return __result; |
| 1881 | } |
| 1882 | |
| 1883 | /** |
| 1884 | * @pre ready() == true |
| 1885 | */ |
| 1886 | string_type |
| 1887 | format(const char_type* __fmt, |
| 1888 | match_flag_type __flags = regex_constants::format_default) const |
| 1889 | { |
| 1890 | string_type __result; |
| 1891 | format(std::back_inserter(__result), |
| 1892 | __fmt, |
| 1893 | __fmt + char_traits<char_type>::length(__fmt), |
| 1894 | __flags); |
| 1895 | return __result; |
| 1896 | } |
| 1897 | |
| 1898 | //@} |
| 1899 | |
| 1900 | /** |
| 1901 | * @name 10.5 Allocator |
| 1902 | */ |
| 1903 | //@{ |
| 1904 | |
| 1905 | /** |
| 1906 | * @brief Gets a copy of the allocator. |
| 1907 | */ |
| 1908 | allocator_type |
| 1909 | get_allocator() const noexcept |
| 1910 | { return _Base_type::get_allocator(); } |
| 1911 | |
| 1912 | //@} |
| 1913 | |
| 1914 | /** |
| 1915 | * @name 10.6 Swap |
| 1916 | */ |
| 1917 | //@{ |
| 1918 | |
| 1919 | /** |
| 1920 | * @brief Swaps the contents of two match_results. |
| 1921 | */ |
| 1922 | void |
| 1923 | swap(match_results& __that) noexcept |
| 1924 | { |
| 1925 | using std::swap; |
| 1926 | _Base_type::swap(__that); |
| 1927 | swap(_M_begin, __that._M_begin); |
| 1928 | } |
| 1929 | //@} |
| 1930 | |
| 1931 | private: |
| 1932 | template<typename, typename, typename, bool> |
| 1933 | friend class __detail::_Executor; |
| 1934 | |
| 1935 | template<typename, typename, typename> |
| 1936 | friend class regex_iterator; |
| 1937 | |
| 1938 | template<typename _Bp, typename _Ap, typename _Cp, typename _Rp, |
| 1939 | __detail::_RegexExecutorPolicy, bool> |
| 1940 | friend bool |
| 1941 | __detail::__regex_algo_impl(_Bp, _Bp, match_results<_Bp, _Ap>&, |
| 1942 | const basic_regex<_Cp, _Rp>&, |
| 1943 | regex_constants::match_flag_type); |
| 1944 | |
| 1945 | void |
| 1946 | _M_resize(unsigned int __size) |
| 1947 | { _Base_type::resize(__size + 3); } |
| 1948 | |
| 1949 | const_reference |
| 1950 | _M_unmatched_sub() const |
| 1951 | { return _Base_type::operator[](_Base_type::size() - 3); } |
| 1952 | |
| 1953 | sub_match<_Bi_iter>& |
| 1954 | _M_unmatched_sub() |
| 1955 | { return _Base_type::operator[](_Base_type::size() - 3); } |
| 1956 | |
| 1957 | const_reference |
| 1958 | _M_prefix() const |
| 1959 | { return _Base_type::operator[](_Base_type::size() - 2); } |
| 1960 | |
| 1961 | sub_match<_Bi_iter>& |
| 1962 | _M_prefix() |
| 1963 | { return _Base_type::operator[](_Base_type::size() - 2); } |
| 1964 | |
| 1965 | const_reference |
| 1966 | _M_suffix() const |
| 1967 | { return _Base_type::operator[](_Base_type::size() - 1); } |
| 1968 | |
| 1969 | sub_match<_Bi_iter>& |
| 1970 | _M_suffix() |
| 1971 | { return _Base_type::operator[](_Base_type::size() - 1); } |
| 1972 | |
| 1973 | _Bi_iter _M_begin; |
| 1974 | }; |
| 1975 | |
| 1976 | typedef match_results<const char*> cmatch; |
| 1977 | typedef match_results<string::const_iterator> smatch; |
| 1978 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 1979 | typedef match_results<const wchar_t*> wcmatch; |
| 1980 | typedef match_results<wstring::const_iterator> wsmatch; |
| 1981 | #endif |
| 1982 | |
| 1983 | // match_results comparisons |
| 1984 | /** |
| 1985 | * @brief Compares two match_results for equality. |
| 1986 | * @returns true if the two objects refer to the same match, |
| 1987 | * false otherwise. |
| 1988 | */ |
| 1989 | template<typename _Bi_iter, typename _Alloc> |
| 1990 | inline bool |
| 1991 | operator==(const match_results<_Bi_iter, _Alloc>& __m1, |
| 1992 | const match_results<_Bi_iter, _Alloc>& __m2) noexcept |
| 1993 | { |
| 1994 | if (__m1.ready() != __m2.ready()) |
| 1995 | return false; |
| 1996 | if (!__m1.ready()) // both are not ready |
| 1997 | return true; |
| 1998 | if (__m1.empty() != __m2.empty()) |
| 1999 | return false; |
| 2000 | if (__m1.empty()) // both are empty |
| 2001 | return true; |
| 2002 | return __m1.prefix() == __m2.prefix() |
| 2003 | && __m1.size() == __m2.size() |
| 2004 | && std::equal(__m1.begin(), __m1.end(), __m2.begin()) |
| 2005 | && __m1.suffix() == __m2.suffix(); |
| 2006 | } |
| 2007 | |
| 2008 | /** |
| 2009 | * @brief Compares two match_results for inequality. |
| 2010 | * @returns true if the two objects do not refer to the same match, |
| 2011 | * false otherwise. |
| 2012 | */ |
| 2013 | template<typename _Bi_iter, class _Alloc> |
| 2014 | inline bool |
| 2015 | operator!=(const match_results<_Bi_iter, _Alloc>& __m1, |
| 2016 | const match_results<_Bi_iter, _Alloc>& __m2) noexcept |
| 2017 | { return !(__m1 == __m2); } |
| 2018 | |
| 2019 | // [7.10.6] match_results swap |
| 2020 | /** |
| 2021 | * @brief Swaps two match results. |
| 2022 | * @param __lhs A match result. |
| 2023 | * @param __rhs A match result. |
| 2024 | * |
| 2025 | * The contents of the two match_results objects are swapped. |
| 2026 | */ |
| 2027 | template<typename _Bi_iter, typename _Alloc> |
| 2028 | inline void |
| 2029 | swap(match_results<_Bi_iter, _Alloc>& __lhs, |
| 2030 | match_results<_Bi_iter, _Alloc>& __rhs) noexcept |
| 2031 | { __lhs.swap(__rhs); } |
| 2032 | |
| 2033 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 2034 | |
| 2035 | // [7.11.2] Function template regex_match |
| 2036 | /** |
| 2037 | * @name Matching, Searching, and Replacing |
| 2038 | */ |
| 2039 | //@{ |
| 2040 | |
| 2041 | /** |
| 2042 | * @brief Determines if there is a match between the regular expression @p e |
| 2043 | * and all of the character sequence [first, last). |
| 2044 | * |
| 2045 | * @param __s Start of the character sequence to match. |
| 2046 | * @param __e One-past-the-end of the character sequence to match. |
| 2047 | * @param __m The match results. |
| 2048 | * @param __re The regular expression. |
| 2049 | * @param __flags Controls how the regular expression is matched. |
| 2050 | * |
| 2051 | * @retval true A match exists. |
| 2052 | * @retval false Otherwise. |
| 2053 | * |
| 2054 | * @throws an exception of type regex_error. |
| 2055 | */ |
| 2056 | template<typename _Bi_iter, typename _Alloc, |
| 2057 | typename _Ch_type, typename _Rx_traits> |
| 2058 | inline bool |
| 2059 | regex_match(_Bi_iter __s, |
| 2060 | _Bi_iter __e, |
| 2061 | match_results<_Bi_iter, _Alloc>& __m, |
| 2062 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2063 | regex_constants::match_flag_type __flags |
| 2064 | = regex_constants::match_default) |
| 2065 | { |
| 2066 | return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits, |
| 2067 | __detail::_RegexExecutorPolicy::_S_auto, true> |
| 2068 | (__s, __e, __m, __re, __flags); |
| 2069 | } |
| 2070 | |
| 2071 | /** |
| 2072 | * @brief Indicates if there is a match between the regular expression @p e |
| 2073 | * and all of the character sequence [first, last). |
| 2074 | * |
| 2075 | * @param __first Beginning of the character sequence to match. |
| 2076 | * @param __last One-past-the-end of the character sequence to match. |
| 2077 | * @param __re The regular expression. |
| 2078 | * @param __flags Controls how the regular expression is matched. |
| 2079 | * |
| 2080 | * @retval true A match exists. |
| 2081 | * @retval false Otherwise. |
| 2082 | * |
| 2083 | * @throws an exception of type regex_error. |
| 2084 | */ |
| 2085 | template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits> |
| 2086 | inline bool |
| 2087 | regex_match(_Bi_iter __first, _Bi_iter __last, |
| 2088 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2089 | regex_constants::match_flag_type __flags |
| 2090 | = regex_constants::match_default) |
| 2091 | { |
| 2092 | match_results<_Bi_iter> __what; |
| 2093 | return regex_match(__first, __last, __what, __re, __flags); |
| 2094 | } |
| 2095 | |
| 2096 | /** |
| 2097 | * @brief Determines if there is a match between the regular expression @p e |
| 2098 | * and a C-style null-terminated string. |
| 2099 | * |
| 2100 | * @param __s The C-style null-terminated string to match. |
| 2101 | * @param __m The match results. |
| 2102 | * @param __re The regular expression. |
| 2103 | * @param __f Controls how the regular expression is matched. |
| 2104 | * |
| 2105 | * @retval true A match exists. |
| 2106 | * @retval false Otherwise. |
| 2107 | * |
| 2108 | * @throws an exception of type regex_error. |
| 2109 | */ |
| 2110 | template<typename _Ch_type, typename _Alloc, typename _Rx_traits> |
| 2111 | inline bool |
| 2112 | regex_match(const _Ch_type* __s, |
| 2113 | match_results<const _Ch_type*, _Alloc>& __m, |
| 2114 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2115 | regex_constants::match_flag_type __f |
| 2116 | = regex_constants::match_default) |
| 2117 | { return regex_match(__s, __s + _Rx_traits::length(__s), __m, __re, __f); } |
| 2118 | |
| 2119 | /** |
| 2120 | * @brief Determines if there is a match between the regular expression @p e |
| 2121 | * and a string. |
| 2122 | * |
| 2123 | * @param __s The string to match. |
| 2124 | * @param __m The match results. |
| 2125 | * @param __re The regular expression. |
| 2126 | * @param __flags Controls how the regular expression is matched. |
| 2127 | * |
| 2128 | * @retval true A match exists. |
| 2129 | * @retval false Otherwise. |
| 2130 | * |
| 2131 | * @throws an exception of type regex_error. |
| 2132 | */ |
| 2133 | template<typename _Ch_traits, typename _Ch_alloc, |
| 2134 | typename _Alloc, typename _Ch_type, typename _Rx_traits> |
| 2135 | inline bool |
| 2136 | regex_match(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>& __s, |
| 2137 | match_results<typename basic_string<_Ch_type, |
| 2138 | _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m, |
| 2139 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2140 | regex_constants::match_flag_type __flags |
| 2141 | = regex_constants::match_default) |
| 2142 | { return regex_match(__s.begin(), __s.end(), __m, __re, __flags); } |
| 2143 | |
| 2144 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 2145 | // 2329. regex_match() with match_results should forbid temporary strings |
| 2146 | /// Prevent unsafe attempts to get match_results from a temporary string. |
| 2147 | template<typename _Ch_traits, typename _Ch_alloc, |
| 2148 | typename _Alloc, typename _Ch_type, typename _Rx_traits> |
| 2149 | bool |
| 2150 | regex_match(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>&&, |
| 2151 | match_results<typename basic_string<_Ch_type, |
| 2152 | _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&, |
| 2153 | const basic_regex<_Ch_type, _Rx_traits>&, |
| 2154 | regex_constants::match_flag_type |
| 2155 | = regex_constants::match_default) = delete; |
| 2156 | |
| 2157 | /** |
| 2158 | * @brief Indicates if there is a match between the regular expression @p e |
| 2159 | * and a C-style null-terminated string. |
| 2160 | * |
| 2161 | * @param __s The C-style null-terminated string to match. |
| 2162 | * @param __re The regular expression. |
| 2163 | * @param __f Controls how the regular expression is matched. |
| 2164 | * |
| 2165 | * @retval true A match exists. |
| 2166 | * @retval false Otherwise. |
| 2167 | * |
| 2168 | * @throws an exception of type regex_error. |
| 2169 | */ |
| 2170 | template<typename _Ch_type, class _Rx_traits> |
| 2171 | inline bool |
| 2172 | regex_match(const _Ch_type* __s, |
| 2173 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2174 | regex_constants::match_flag_type __f |
| 2175 | = regex_constants::match_default) |
| 2176 | { return regex_match(__s, __s + _Rx_traits::length(__s), __re, __f); } |
| 2177 | |
| 2178 | /** |
| 2179 | * @brief Indicates if there is a match between the regular expression @p e |
| 2180 | * and a string. |
| 2181 | * |
| 2182 | * @param __s [IN] The string to match. |
| 2183 | * @param __re [IN] The regular expression. |
| 2184 | * @param __flags [IN] Controls how the regular expression is matched. |
| 2185 | * |
| 2186 | * @retval true A match exists. |
| 2187 | * @retval false Otherwise. |
| 2188 | * |
| 2189 | * @throws an exception of type regex_error. |
| 2190 | */ |
| 2191 | template<typename _Ch_traits, typename _Str_allocator, |
| 2192 | typename _Ch_type, typename _Rx_traits> |
| 2193 | inline bool |
| 2194 | regex_match(const basic_string<_Ch_type, _Ch_traits, _Str_allocator>& __s, |
| 2195 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2196 | regex_constants::match_flag_type __flags |
| 2197 | = regex_constants::match_default) |
| 2198 | { return regex_match(__s.begin(), __s.end(), __re, __flags); } |
| 2199 | |
| 2200 | // [7.11.3] Function template regex_search |
| 2201 | /** |
| 2202 | * Searches for a regular expression within a range. |
| 2203 | * @param __s [IN] The start of the string to search. |
| 2204 | * @param __e [IN] One-past-the-end of the string to search. |
| 2205 | * @param __m [OUT] The match results. |
| 2206 | * @param __re [IN] The regular expression to search for. |
| 2207 | * @param __flags [IN] Search policy flags. |
| 2208 | * @retval true A match was found within the string. |
| 2209 | * @retval false No match was found within the string, the content of %m is |
| 2210 | * undefined. |
| 2211 | * |
| 2212 | * @throws an exception of type regex_error. |
| 2213 | */ |
| 2214 | template<typename _Bi_iter, typename _Alloc, |
| 2215 | typename _Ch_type, typename _Rx_traits> |
| 2216 | inline bool |
| 2217 | regex_search(_Bi_iter __s, _Bi_iter __e, |
| 2218 | match_results<_Bi_iter, _Alloc>& __m, |
| 2219 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2220 | regex_constants::match_flag_type __flags |
| 2221 | = regex_constants::match_default) |
| 2222 | { |
| 2223 | return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits, |
| 2224 | __detail::_RegexExecutorPolicy::_S_auto, false> |
| 2225 | (__s, __e, __m, __re, __flags); |
| 2226 | } |
| 2227 | |
| 2228 | /** |
| 2229 | * Searches for a regular expression within a range. |
| 2230 | * @param __first [IN] The start of the string to search. |
| 2231 | * @param __last [IN] One-past-the-end of the string to search. |
| 2232 | * @param __re [IN] The regular expression to search for. |
| 2233 | * @param __flags [IN] Search policy flags. |
| 2234 | * @retval true A match was found within the string. |
| 2235 | * @retval false No match was found within the string. |
| 2236 | * |
| 2237 | * @throws an exception of type regex_error. |
| 2238 | */ |
| 2239 | template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits> |
| 2240 | inline bool |
| 2241 | regex_search(_Bi_iter __first, _Bi_iter __last, |
| 2242 | const basic_regex<_Ch_type, _Rx_traits>& __re, |
| 2243 | regex_constants::match_flag_type __flags |
| 2244 | = regex_constants::match_default) |
| 2245 | { |
| 2246 | match_results<_Bi_iter> __what; |
| 2247 | return regex_search(__first, __last, __what, __re, __flags); |
| 2248 | } |
| 2249 | |
| 2250 | /** |
| 2251 | * @brief Searches for a regular expression within a C-string. |
| 2252 | * @param __s [IN] A C-string to search for the regex. |
| 2253 | * @param __m [OUT] The set of regex matches. |
| 2254 | * @param __e [IN] The regex to search for in @p s. |
| 2255 | * @param __f [IN] The search flags. |
| 2256 | * @retval true A match was found within the string. |
| 2257 | * @retval false No match was found within the string, the content of %m is |
| 2258 | * undefined. |
| 2259 | * |
| 2260 | * @throws an exception of type regex_error. |
| 2261 | */ |
| 2262 | template<typename _Ch_type, class _Alloc, class _Rx_traits> |
| 2263 | inline bool |
| 2264 | regex_search(const _Ch_type* __s, |
| 2265 | match_results<const _Ch_type*, _Alloc>& __m, |
| 2266 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2267 | regex_constants::match_flag_type __f |
| 2268 | = regex_constants::match_default) |
| 2269 | { return regex_search(__s, __s + _Rx_traits::length(__s), __m, __e, __f); } |
| 2270 | |
| 2271 | /** |
| 2272 | * @brief Searches for a regular expression within a C-string. |
| 2273 | * @param __s [IN] The C-string to search. |
| 2274 | * @param __e [IN] The regular expression to search for. |
| 2275 | * @param __f [IN] Search policy flags. |
| 2276 | * @retval true A match was found within the string. |
| 2277 | * @retval false No match was found within the string. |
| 2278 | * |
| 2279 | * @throws an exception of type regex_error. |
| 2280 | */ |
| 2281 | template<typename _Ch_type, typename _Rx_traits> |
| 2282 | inline bool |
| 2283 | regex_search(const _Ch_type* __s, |
| 2284 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2285 | regex_constants::match_flag_type __f |
| 2286 | = regex_constants::match_default) |
| 2287 | { return regex_search(__s, __s + _Rx_traits::length(__s), __e, __f); } |
| 2288 | |
| 2289 | /** |
| 2290 | * @brief Searches for a regular expression within a string. |
| 2291 | * @param __s [IN] The string to search. |
| 2292 | * @param __e [IN] The regular expression to search for. |
| 2293 | * @param __flags [IN] Search policy flags. |
| 2294 | * @retval true A match was found within the string. |
| 2295 | * @retval false No match was found within the string. |
| 2296 | * |
| 2297 | * @throws an exception of type regex_error. |
| 2298 | */ |
| 2299 | template<typename _Ch_traits, typename _String_allocator, |
| 2300 | typename _Ch_type, typename _Rx_traits> |
| 2301 | inline bool |
| 2302 | regex_search(const basic_string<_Ch_type, _Ch_traits, |
| 2303 | _String_allocator>& __s, |
| 2304 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2305 | regex_constants::match_flag_type __flags |
| 2306 | = regex_constants::match_default) |
| 2307 | { return regex_search(__s.begin(), __s.end(), __e, __flags); } |
| 2308 | |
| 2309 | /** |
| 2310 | * @brief Searches for a regular expression within a string. |
| 2311 | * @param __s [IN] A C++ string to search for the regex. |
| 2312 | * @param __m [OUT] The set of regex matches. |
| 2313 | * @param __e [IN] The regex to search for in @p s. |
| 2314 | * @param __f [IN] The search flags. |
| 2315 | * @retval true A match was found within the string. |
| 2316 | * @retval false No match was found within the string, the content of %m is |
| 2317 | * undefined. |
| 2318 | * |
| 2319 | * @throws an exception of type regex_error. |
| 2320 | */ |
| 2321 | template<typename _Ch_traits, typename _Ch_alloc, |
| 2322 | typename _Alloc, typename _Ch_type, |
| 2323 | typename _Rx_traits> |
| 2324 | inline bool |
| 2325 | regex_search(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>& __s, |
| 2326 | match_results<typename basic_string<_Ch_type, |
| 2327 | _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m, |
| 2328 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2329 | regex_constants::match_flag_type __f |
| 2330 | = regex_constants::match_default) |
| 2331 | { return regex_search(__s.begin(), __s.end(), __m, __e, __f); } |
| 2332 | |
| 2333 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 2334 | // 2329. regex_search() with match_results should forbid temporary strings |
| 2335 | /// Prevent unsafe attempts to get match_results from a temporary string. |
| 2336 | template<typename _Ch_traits, typename _Ch_alloc, |
| 2337 | typename _Alloc, typename _Ch_type, |
| 2338 | typename _Rx_traits> |
| 2339 | bool |
| 2340 | regex_search(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>&&, |
| 2341 | match_results<typename basic_string<_Ch_type, |
| 2342 | _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&, |
| 2343 | const basic_regex<_Ch_type, _Rx_traits>&, |
| 2344 | regex_constants::match_flag_type |
| 2345 | = regex_constants::match_default) = delete; |
| 2346 | |
| 2347 | // std [28.11.4] Function template regex_replace |
| 2348 | /** |
| 2349 | * @brief Search for a regular expression within a range for multiple times, |
| 2350 | and replace the matched parts through filling a format string. |
| 2351 | * @param __out [OUT] The output iterator. |
| 2352 | * @param __first [IN] The start of the string to search. |
| 2353 | * @param __last [IN] One-past-the-end of the string to search. |
| 2354 | * @param __e [IN] The regular expression to search for. |
| 2355 | * @param __fmt [IN] The format string. |
| 2356 | * @param __flags [IN] Search and replace policy flags. |
| 2357 | * |
| 2358 | * @returns __out |
| 2359 | * @throws an exception of type regex_error. |
| 2360 | */ |
| 2361 | template<typename _Out_iter, typename _Bi_iter, |
| 2362 | typename _Rx_traits, typename _Ch_type, |
| 2363 | typename _St, typename _Sa> |
| 2364 | inline _Out_iter |
| 2365 | regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last, |
| 2366 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2367 | const basic_string<_Ch_type, _St, _Sa>& __fmt, |
| 2368 | regex_constants::match_flag_type __flags |
| 2369 | = regex_constants::match_default) |
| 2370 | { |
| 2371 | return regex_replace(__out, __first, __last, __e, __fmt.c_str(), __flags); |
| 2372 | } |
| 2373 | |
| 2374 | /** |
| 2375 | * @brief Search for a regular expression within a range for multiple times, |
| 2376 | and replace the matched parts through filling a format C-string. |
| 2377 | * @param __out [OUT] The output iterator. |
| 2378 | * @param __first [IN] The start of the string to search. |
| 2379 | * @param __last [IN] One-past-the-end of the string to search. |
| 2380 | * @param __e [IN] The regular expression to search for. |
| 2381 | * @param __fmt [IN] The format C-string. |
| 2382 | * @param __flags [IN] Search and replace policy flags. |
| 2383 | * |
| 2384 | * @returns __out |
| 2385 | * @throws an exception of type regex_error. |
| 2386 | */ |
| 2387 | template<typename _Out_iter, typename _Bi_iter, |
| 2388 | typename _Rx_traits, typename _Ch_type> |
| 2389 | _Out_iter |
| 2390 | regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last, |
| 2391 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2392 | const _Ch_type* __fmt, |
| 2393 | regex_constants::match_flag_type __flags |
| 2394 | = regex_constants::match_default); |
| 2395 | |
| 2396 | /** |
| 2397 | * @brief Search for a regular expression within a string for multiple times, |
| 2398 | and replace the matched parts through filling a format string. |
| 2399 | * @param __s [IN] The string to search and replace. |
| 2400 | * @param __e [IN] The regular expression to search for. |
| 2401 | * @param __fmt [IN] The format string. |
| 2402 | * @param __flags [IN] Search and replace policy flags. |
| 2403 | * |
| 2404 | * @returns The string after replacing. |
| 2405 | * @throws an exception of type regex_error. |
| 2406 | */ |
| 2407 | template<typename _Rx_traits, typename _Ch_type, |
| 2408 | typename _St, typename _Sa, typename _Fst, typename _Fsa> |
| 2409 | inline basic_string<_Ch_type, _St, _Sa> |
| 2410 | regex_replace(const basic_string<_Ch_type, _St, _Sa>& __s, |
| 2411 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2412 | const basic_string<_Ch_type, _Fst, _Fsa>& __fmt, |
| 2413 | regex_constants::match_flag_type __flags |
| 2414 | = regex_constants::match_default) |
| 2415 | { |
| 2416 | basic_string<_Ch_type, _St, _Sa> __result; |
| 2417 | regex_replace(std::back_inserter(__result), |
| 2418 | __s.begin(), __s.end(), __e, __fmt, __flags); |
| 2419 | return __result; |
| 2420 | } |
| 2421 | |
| 2422 | /** |
| 2423 | * @brief Search for a regular expression within a string for multiple times, |
| 2424 | and replace the matched parts through filling a format C-string. |
| 2425 | * @param __s [IN] The string to search and replace. |
| 2426 | * @param __e [IN] The regular expression to search for. |
| 2427 | * @param __fmt [IN] The format C-string. |
| 2428 | * @param __flags [IN] Search and replace policy flags. |
| 2429 | * |
| 2430 | * @returns The string after replacing. |
| 2431 | * @throws an exception of type regex_error. |
| 2432 | */ |
| 2433 | template<typename _Rx_traits, typename _Ch_type, |
| 2434 | typename _St, typename _Sa> |
| 2435 | inline basic_string<_Ch_type, _St, _Sa> |
| 2436 | regex_replace(const basic_string<_Ch_type, _St, _Sa>& __s, |
| 2437 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2438 | const _Ch_type* __fmt, |
| 2439 | regex_constants::match_flag_type __flags |
| 2440 | = regex_constants::match_default) |
| 2441 | { |
| 2442 | basic_string<_Ch_type, _St, _Sa> __result; |
| 2443 | regex_replace(std::back_inserter(__result), |
| 2444 | __s.begin(), __s.end(), __e, __fmt, __flags); |
| 2445 | return __result; |
| 2446 | } |
| 2447 | |
| 2448 | /** |
| 2449 | * @brief Search for a regular expression within a C-string for multiple |
| 2450 | times, and replace the matched parts through filling a format string. |
| 2451 | * @param __s [IN] The C-string to search and replace. |
| 2452 | * @param __e [IN] The regular expression to search for. |
| 2453 | * @param __fmt [IN] The format string. |
| 2454 | * @param __flags [IN] Search and replace policy flags. |
| 2455 | * |
| 2456 | * @returns The string after replacing. |
| 2457 | * @throws an exception of type regex_error. |
| 2458 | */ |
| 2459 | template<typename _Rx_traits, typename _Ch_type, |
| 2460 | typename _St, typename _Sa> |
| 2461 | inline basic_string<_Ch_type> |
| 2462 | regex_replace(const _Ch_type* __s, |
| 2463 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2464 | const basic_string<_Ch_type, _St, _Sa>& __fmt, |
| 2465 | regex_constants::match_flag_type __flags |
| 2466 | = regex_constants::match_default) |
| 2467 | { |
| 2468 | basic_string<_Ch_type> __result; |
| 2469 | regex_replace(std::back_inserter(__result), __s, |
| 2470 | __s + char_traits<_Ch_type>::length(__s), |
| 2471 | __e, __fmt, __flags); |
| 2472 | return __result; |
| 2473 | } |
| 2474 | |
| 2475 | /** |
| 2476 | * @brief Search for a regular expression within a C-string for multiple |
| 2477 | times, and replace the matched parts through filling a format C-string. |
| 2478 | * @param __s [IN] The C-string to search and replace. |
| 2479 | * @param __e [IN] The regular expression to search for. |
| 2480 | * @param __fmt [IN] The format C-string. |
| 2481 | * @param __flags [IN] Search and replace policy flags. |
| 2482 | * |
| 2483 | * @returns The string after replacing. |
| 2484 | * @throws an exception of type regex_error. |
| 2485 | */ |
| 2486 | template<typename _Rx_traits, typename _Ch_type> |
| 2487 | inline basic_string<_Ch_type> |
| 2488 | regex_replace(const _Ch_type* __s, |
| 2489 | const basic_regex<_Ch_type, _Rx_traits>& __e, |
| 2490 | const _Ch_type* __fmt, |
| 2491 | regex_constants::match_flag_type __flags |
| 2492 | = regex_constants::match_default) |
| 2493 | { |
| 2494 | basic_string<_Ch_type> __result; |
| 2495 | regex_replace(std::back_inserter(__result), __s, |
| 2496 | __s + char_traits<_Ch_type>::length(__s), |
| 2497 | __e, __fmt, __flags); |
| 2498 | return __result; |
| 2499 | } |
| 2500 | |
| 2501 | //@} |
| 2502 | |
| 2503 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
| 2504 | |
| 2505 | // std [28.12] Class template regex_iterator |
| 2506 | /** |
| 2507 | * An iterator adaptor that will provide repeated calls of regex_search over |
| 2508 | * a range until no more matches remain. |
| 2509 | */ |
| 2510 | template<typename _Bi_iter, |
| 2511 | typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type, |
| 2512 | typename _Rx_traits = regex_traits<_Ch_type> > |
| 2513 | class regex_iterator |
| 2514 | { |
| 2515 | public: |
| 2516 | typedef basic_regex<_Ch_type, _Rx_traits> regex_type; |
| 2517 | typedef match_results<_Bi_iter> value_type; |
| 2518 | typedef std::ptrdiff_t difference_type; |
| 2519 | typedef const value_type* pointer; |
| 2520 | typedef const value_type& reference; |
| 2521 | typedef std::forward_iterator_tag iterator_category; |
| 2522 | |
| 2523 | /** |
| 2524 | * @brief Provides a singular iterator, useful for indicating |
| 2525 | * one-past-the-end of a range. |
| 2526 | */ |
| 2527 | regex_iterator() = default; |
| 2528 | |
| 2529 | /** |
| 2530 | * Constructs a %regex_iterator... |
| 2531 | * @param __a [IN] The start of a text range to search. |
| 2532 | * @param __b [IN] One-past-the-end of the text range to search. |
| 2533 | * @param __re [IN] The regular expression to match. |
| 2534 | * @param __m [IN] Policy flags for match rules. |
| 2535 | */ |
| 2536 | regex_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re, |
| 2537 | regex_constants::match_flag_type __m |
| 2538 | = regex_constants::match_default) |
| 2539 | : _M_begin(__a), _M_end(__b), _M_pregex(&__re), _M_flags(__m), _M_match() |
| 2540 | { |
| 2541 | if (!regex_search(_M_begin, _M_end, _M_match, *_M_pregex, _M_flags)) |
| 2542 | *this = regex_iterator(); |
| 2543 | } |
| 2544 | |
| 2545 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 2546 | // 2332. regex_iterator should forbid temporary regexes |
| 2547 | regex_iterator(_Bi_iter, _Bi_iter, const regex_type&&, |
| 2548 | regex_constants::match_flag_type |
| 2549 | = regex_constants::match_default) = delete; |
| 2550 | |
| 2551 | /// Copy constructs a %regex_iterator. |
| 2552 | regex_iterator(const regex_iterator&) = default; |
| 2553 | |
| 2554 | /// Copy assigns one %regex_iterator to another. |
| 2555 | regex_iterator& |
| 2556 | operator=(const regex_iterator&) = default; |
| 2557 | |
| 2558 | ~regex_iterator() = default; |
| 2559 | |
| 2560 | /** |
| 2561 | * @brief Tests the equivalence of two regex iterators. |
| 2562 | */ |
| 2563 | bool |
| 2564 | operator==(const regex_iterator&) const noexcept; |
| 2565 | |
| 2566 | /** |
| 2567 | * @brief Tests the inequivalence of two regex iterators. |
| 2568 | */ |
| 2569 | bool |
| 2570 | operator!=(const regex_iterator& __rhs) const noexcept |
| 2571 | { return !(*this == __rhs); } |
| 2572 | |
| 2573 | /** |
| 2574 | * @brief Dereferences a %regex_iterator. |
| 2575 | */ |
| 2576 | const value_type& |
| 2577 | operator*() const noexcept |
| 2578 | { return _M_match; } |
| 2579 | |
| 2580 | /** |
| 2581 | * @brief Selects a %regex_iterator member. |
| 2582 | */ |
| 2583 | const value_type* |
| 2584 | operator->() const noexcept |
| 2585 | { return &_M_match; } |
| 2586 | |
| 2587 | /** |
| 2588 | * @brief Increments a %regex_iterator. |
| 2589 | */ |
| 2590 | regex_iterator& |
| 2591 | operator++(); |
| 2592 | |
| 2593 | /** |
| 2594 | * @brief Postincrements a %regex_iterator. |
| 2595 | */ |
| 2596 | regex_iterator |
| 2597 | operator++(int) |
| 2598 | { |
| 2599 | auto __tmp = *this; |
| 2600 | ++(*this); |
| 2601 | return __tmp; |
| 2602 | } |
| 2603 | |
| 2604 | private: |
| 2605 | _Bi_iter _M_begin {}; |
| 2606 | _Bi_iter _M_end {}; |
| 2607 | const regex_type* _M_pregex = nullptr; |
| 2608 | regex_constants::match_flag_type _M_flags {}; |
| 2609 | match_results<_Bi_iter> _M_match; |
| 2610 | }; |
| 2611 | |
| 2612 | typedef regex_iterator<const char*> cregex_iterator; |
| 2613 | typedef regex_iterator<string::const_iterator> sregex_iterator; |
| 2614 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 2615 | typedef regex_iterator<const wchar_t*> wcregex_iterator; |
| 2616 | typedef regex_iterator<wstring::const_iterator> wsregex_iterator; |
| 2617 | #endif |
| 2618 | |
| 2619 | // [7.12.2] Class template regex_token_iterator |
| 2620 | /** |
| 2621 | * Iterates over submatches in a range (or @a splits a text string). |
| 2622 | * |
| 2623 | * The purpose of this iterator is to enumerate all, or all specified, |
| 2624 | * matches of a regular expression within a text range. The dereferenced |
| 2625 | * value of an iterator of this class is a std::sub_match object. |
| 2626 | */ |
| 2627 | template<typename _Bi_iter, |
| 2628 | typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type, |
| 2629 | typename _Rx_traits = regex_traits<_Ch_type> > |
| 2630 | class regex_token_iterator |
| 2631 | { |
| 2632 | public: |
| 2633 | typedef basic_regex<_Ch_type, _Rx_traits> regex_type; |
| 2634 | typedef sub_match<_Bi_iter> value_type; |
| 2635 | typedef std::ptrdiff_t difference_type; |
| 2636 | typedef const value_type* pointer; |
| 2637 | typedef const value_type& reference; |
| 2638 | typedef std::forward_iterator_tag iterator_category; |
| 2639 | |
| 2640 | public: |
| 2641 | /** |
| 2642 | * @brief Default constructs a %regex_token_iterator. |
| 2643 | * |
| 2644 | * A default-constructed %regex_token_iterator is a singular iterator |
| 2645 | * that will compare equal to the one-past-the-end value for any |
| 2646 | * iterator of the same type. |
| 2647 | */ |
| 2648 | regex_token_iterator() |
| 2649 | : _M_position(), _M_subs(), _M_suffix(), _M_n(0), _M_result(nullptr), |
| 2650 | _M_has_m1(false) |
| 2651 | { } |
| 2652 | |
| 2653 | /** |
| 2654 | * Constructs a %regex_token_iterator... |
| 2655 | * @param __a [IN] The start of the text to search. |
| 2656 | * @param __b [IN] One-past-the-end of the text to search. |
| 2657 | * @param __re [IN] The regular expression to search for. |
| 2658 | * @param __submatch [IN] Which submatch to return. There are some |
| 2659 | * special values for this parameter: |
| 2660 | * - -1 each enumerated subexpression does NOT |
| 2661 | * match the regular expression (aka field |
| 2662 | * splitting) |
| 2663 | * - 0 the entire string matching the |
| 2664 | * subexpression is returned for each match |
| 2665 | * within the text. |
| 2666 | * - >0 enumerates only the indicated |
| 2667 | * subexpression from a match within the text. |
| 2668 | * @param __m [IN] Policy flags for match rules. |
| 2669 | */ |
| 2670 | regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re, |
| 2671 | int __submatch = 0, |
| 2672 | regex_constants::match_flag_type __m |
| 2673 | = regex_constants::match_default) |
| 2674 | : _M_position(__a, __b, __re, __m), _M_subs(1, __submatch), _M_n(0) |
| 2675 | { _M_init(__a, __b); } |
| 2676 | |
| 2677 | /** |
| 2678 | * Constructs a %regex_token_iterator... |
| 2679 | * @param __a [IN] The start of the text to search. |
| 2680 | * @param __b [IN] One-past-the-end of the text to search. |
| 2681 | * @param __re [IN] The regular expression to search for. |
| 2682 | * @param __submatches [IN] A list of subexpressions to return for each |
| 2683 | * regular expression match within the text. |
| 2684 | * @param __m [IN] Policy flags for match rules. |
| 2685 | */ |
| 2686 | regex_token_iterator(_Bi_iter __a, _Bi_iter __b, |
| 2687 | const regex_type& __re, |
| 2688 | const std::vector<int>& __submatches, |
| 2689 | regex_constants::match_flag_type __m |
| 2690 | = regex_constants::match_default) |
| 2691 | : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0) |
| 2692 | { _M_init(__a, __b); } |
| 2693 | |
| 2694 | /** |
| 2695 | * Constructs a %regex_token_iterator... |
| 2696 | * @param __a [IN] The start of the text to search. |
| 2697 | * @param __b [IN] One-past-the-end of the text to search. |
| 2698 | * @param __re [IN] The regular expression to search for. |
| 2699 | * @param __submatches [IN] A list of subexpressions to return for each |
| 2700 | * regular expression match within the text. |
| 2701 | * @param __m [IN] Policy flags for match rules. |
| 2702 | */ |
| 2703 | regex_token_iterator(_Bi_iter __a, _Bi_iter __b, |
| 2704 | const regex_type& __re, |
| 2705 | initializer_list<int> __submatches, |
| 2706 | regex_constants::match_flag_type __m |
| 2707 | = regex_constants::match_default) |
| 2708 | : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0) |
| 2709 | { _M_init(__a, __b); } |
| 2710 | |
| 2711 | /** |
| 2712 | * Constructs a %regex_token_iterator... |
| 2713 | * @param __a [IN] The start of the text to search. |
| 2714 | * @param __b [IN] One-past-the-end of the text to search. |
| 2715 | * @param __re [IN] The regular expression to search for. |
| 2716 | * @param __submatches [IN] A list of subexpressions to return for each |
| 2717 | * regular expression match within the text. |
| 2718 | * @param __m [IN] Policy flags for match rules. |
| 2719 | */ |
| 2720 | template<std::size_t _Nm> |
| 2721 | regex_token_iterator(_Bi_iter __a, _Bi_iter __b, |
| 2722 | const regex_type& __re, |
| 2723 | const int (&__submatches)[_Nm], |
| 2724 | regex_constants::match_flag_type __m |
| 2725 | = regex_constants::match_default) |
| 2726 | : _M_position(__a, __b, __re, __m), |
| 2727 | _M_subs(__submatches, __submatches + _Nm), _M_n(0) |
| 2728 | { _M_init(__a, __b); } |
| 2729 | |
| 2730 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 2731 | // 2332. regex_token_iterator should forbid temporary regexes |
| 2732 | regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, int = 0, |
| 2733 | regex_constants::match_flag_type = |
| 2734 | regex_constants::match_default) = delete; |
| 2735 | regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, |
| 2736 | const std::vector<int>&, |
| 2737 | regex_constants::match_flag_type = |
| 2738 | regex_constants::match_default) = delete; |
| 2739 | regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, |
| 2740 | initializer_list<int>, |
| 2741 | regex_constants::match_flag_type = |
| 2742 | regex_constants::match_default) = delete; |
| 2743 | template <std::size_t _Nm> |
| 2744 | regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, |
| 2745 | const int (&)[_Nm], |
| 2746 | regex_constants::match_flag_type = |
| 2747 | regex_constants::match_default) = delete; |
| 2748 | |
| 2749 | /** |
| 2750 | * @brief Copy constructs a %regex_token_iterator. |
| 2751 | * @param __rhs [IN] A %regex_token_iterator to copy. |
| 2752 | */ |
| 2753 | regex_token_iterator(const regex_token_iterator& __rhs) |
| 2754 | : _M_position(__rhs._M_position), _M_subs(__rhs._M_subs), |
| 2755 | _M_suffix(__rhs._M_suffix), _M_n(__rhs._M_n), _M_has_m1(__rhs._M_has_m1) |
| 2756 | { _M_normalize_result(); } |
| 2757 | |
| 2758 | /** |
| 2759 | * @brief Assigns a %regex_token_iterator to another. |
| 2760 | * @param __rhs [IN] A %regex_token_iterator to copy. |
| 2761 | */ |
| 2762 | regex_token_iterator& |
| 2763 | operator=(const regex_token_iterator& __rhs); |
| 2764 | |
| 2765 | /** |
| 2766 | * @brief Compares a %regex_token_iterator to another for equality. |
| 2767 | */ |
| 2768 | bool |
| 2769 | operator==(const regex_token_iterator& __rhs) const; |
| 2770 | |
| 2771 | /** |
| 2772 | * @brief Compares a %regex_token_iterator to another for inequality. |
| 2773 | */ |
| 2774 | bool |
| 2775 | operator!=(const regex_token_iterator& __rhs) const |
| 2776 | { return !(*this == __rhs); } |
| 2777 | |
| 2778 | /** |
| 2779 | * @brief Dereferences a %regex_token_iterator. |
| 2780 | */ |
| 2781 | const value_type& |
| 2782 | operator*() const |
| 2783 | { return *_M_result; } |
| 2784 | |
| 2785 | /** |
| 2786 | * @brief Selects a %regex_token_iterator member. |
| 2787 | */ |
| 2788 | const value_type* |
| 2789 | operator->() const |
| 2790 | { return _M_result; } |
| 2791 | |
| 2792 | /** |
| 2793 | * @brief Increments a %regex_token_iterator. |
| 2794 | */ |
| 2795 | regex_token_iterator& |
| 2796 | operator++(); |
| 2797 | |
| 2798 | /** |
| 2799 | * @brief Postincrements a %regex_token_iterator. |
| 2800 | */ |
| 2801 | regex_token_iterator |
| 2802 | operator++(int) |
| 2803 | { |
| 2804 | auto __tmp = *this; |
| 2805 | ++(*this); |
| 2806 | return __tmp; |
| 2807 | } |
| 2808 | |
| 2809 | private: |
| 2810 | typedef regex_iterator<_Bi_iter, _Ch_type, _Rx_traits> _Position; |
| 2811 | |
| 2812 | void |
| 2813 | _M_init(_Bi_iter __a, _Bi_iter __b); |
| 2814 | |
| 2815 | const value_type& |
| 2816 | _M_current_match() const |
| 2817 | { |
| 2818 | if (_M_subs[_M_n] == -1) |
| 2819 | return (*_M_position).prefix(); |
| 2820 | else |
| 2821 | return (*_M_position)[_M_subs[_M_n]]; |
| 2822 | } |
| 2823 | |
| 2824 | constexpr bool |
| 2825 | _M_end_of_seq() const |
| 2826 | { return _M_result == nullptr; } |
| 2827 | |
| 2828 | // [28.12.2.2.4] |
| 2829 | void |
| 2830 | _M_normalize_result() |
| 2831 | { |
| 2832 | if (_M_position != _Position()) |
| 2833 | _M_result = &_M_current_match(); |
| 2834 | else if (_M_has_m1) |
| 2835 | _M_result = &_M_suffix; |
| 2836 | else |
| 2837 | _M_result = nullptr; |
| 2838 | } |
| 2839 | |
| 2840 | _Position _M_position; |
| 2841 | std::vector<int> _M_subs; |
| 2842 | value_type _M_suffix; |
| 2843 | std::size_t _M_n; |
| 2844 | const value_type* _M_result; |
| 2845 | |
| 2846 | // Show whether _M_subs contains -1 |
| 2847 | bool _M_has_m1; |
| 2848 | }; |
| 2849 | |
| 2850 | /** @brief Token iterator for C-style NULL-terminated strings. */ |
| 2851 | typedef regex_token_iterator<const char*> cregex_token_iterator; |
| 2852 | |
| 2853 | /** @brief Token iterator for standard strings. */ |
| 2854 | typedef regex_token_iterator<string::const_iterator> sregex_token_iterator; |
| 2855 | |
| 2856 | #ifdef _GLIBCXX_USE_WCHAR_T |
| 2857 | /** @brief Token iterator for C-style NULL-terminated wide strings. */ |
| 2858 | typedef regex_token_iterator<const wchar_t*> wcregex_token_iterator; |
| 2859 | |
| 2860 | /** @brief Token iterator for standard wide-character strings. */ |
| 2861 | typedef regex_token_iterator<wstring::const_iterator> wsregex_token_iterator; |
| 2862 | #endif |
| 2863 | |
| 2864 | //@} // group regex |
| 2865 | |
| 2866 | _GLIBCXX_END_NAMESPACE_CXX11 |
| 2867 | _GLIBCXX_END_NAMESPACE_VERSION |
| 2868 | } // namespace |
| 2869 | |
| 2870 | #include <bits/regex.tcc> |
| 2871 |
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