libstdc++
regex.h
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1// class template regex -*- C++ -*-
2
3// Copyright (C) 2010-2016 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
31namespace 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_GLIBCXX_END_NAMESPACE_VERSION
43
44namespace __detail
45{
46_GLIBCXX_BEGIN_NAMESPACE_VERSION
47
48 enum class _RegexExecutorPolicy : int
49 { _S_auto, _S_alternate };
50
51 template<typename _BiIter, typename _Alloc,
52 typename _CharT, typename _TraitsT,
53 _RegexExecutorPolicy __policy,
54 bool __match_mode>
55 bool
56 __regex_algo_impl(_BiIter __s,
57 _BiIter __e,
58 match_results<_BiIter, _Alloc>& __m,
59 const basic_regex<_CharT, _TraitsT>& __re,
61
62 template<typename, typename, typename, bool>
63 class _Executor;
64
65_GLIBCXX_END_NAMESPACE_VERSION
66}
67
68_GLIBCXX_BEGIN_NAMESPACE_VERSION
69_GLIBCXX_BEGIN_NAMESPACE_CXX11
70
71 /**
72 * @addtogroup regex
73 * @{
74 */
75
76 /**
77 * @brief Describes aspects of a regular expression.
78 *
79 * A regular expression traits class that satisfies the requirements of
80 * section [28.7].
81 *
82 * The class %regex is parameterized around a set of related types and
83 * functions used to complete the definition of its semantics. This class
84 * satisfies the requirements of such a traits class.
85 */
86 template<typename _Ch_type>
88 {
89 public:
90 typedef _Ch_type char_type;
93 private:
94 struct _RegexMask
95 {
96 typedef std::ctype_base::mask _BaseType;
97 _BaseType _M_base;
98 unsigned char _M_extended;
99 static constexpr unsigned char _S_under = 1 << 0;
100 static constexpr unsigned char _S_valid_mask = 0x1;
101
102 constexpr _RegexMask(_BaseType __base = 0,
103 unsigned char __extended = 0)
104 : _M_base(__base), _M_extended(__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^(_RegexMask __other) const
123 {
124 return _RegexMask(_M_base ^ __other._M_base,
125 _M_extended ^ __other._M_extended);
126 }
127
128 constexpr _RegexMask
129 operator~() const
130 { return _RegexMask(~_M_base, ~_M_extended); }
131
132 _RegexMask&
133 operator&=(_RegexMask __other)
134 { return *this = (*this) & __other; }
135
136 _RegexMask&
137 operator|=(_RegexMask __other)
138 { return *this = (*this) | __other; }
139
140 _RegexMask&
141 operator^=(_RegexMask __other)
142 { return *this = (*this) ^ __other; }
143
144 constexpr bool
145 operator==(_RegexMask __other) const
146 {
147 return (_M_extended & _S_valid_mask)
148 == (__other._M_extended & _S_valid_mask)
149 && _M_base == __other._M_base;
150 }
151
152 constexpr bool
153 operator!=(_RegexMask __other) const
154 { return !((*this) == __other); }
155
156 };
157 public:
158 typedef _RegexMask char_class_type;
159
160 public:
161 /**
162 * @brief Constructs a default traits object.
163 */
165
166 /**
167 * @brief Gives the length of a C-style string starting at @p __p.
168 *
169 * @param __p a pointer to the start of a character sequence.
170 *
171 * @returns the number of characters between @p *__p and the first
172 * default-initialized value of type @p char_type. In other words, uses
173 * the C-string algorithm for determining the length of a sequence of
174 * characters.
175 */
176 static std::size_t
177 length(const char_type* __p)
178 { return string_type::traits_type::length(__p); }
179
180 /**
181 * @brief Performs the identity translation.
182 *
183 * @param __c A character to the locale-specific character set.
184 *
185 * @returns __c.
186 */
187 char_type
189 { return __c; }
190
191 /**
192 * @brief Translates a character into a case-insensitive equivalent.
193 *
194 * @param __c A character to the locale-specific character set.
195 *
196 * @returns the locale-specific lower-case equivalent of __c.
197 * @throws std::bad_cast if the imbued locale does not support the ctype
198 * facet.
199 */
200 char_type
202 {
203 typedef std::ctype<char_type> __ctype_type;
204 const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale));
205 return __fctyp.tolower(__c);
206 }
207
208 /**
209 * @brief Gets a sort key for a character sequence.
210 *
211 * @param __first beginning of the character sequence.
212 * @param __last one-past-the-end of the character sequence.
213 *
214 * Returns a sort key for the character sequence designated by the
215 * iterator range [F1, F2) such that if the character sequence [G1, G2)
216 * sorts before the character sequence [H1, H2) then
217 * v.transform(G1, G2) < v.transform(H1, H2).
218 *
219 * What this really does is provide a more efficient way to compare a
220 * string to multiple other strings in locales with fancy collation
221 * rules and equivalence classes.
222 *
223 * @returns a locale-specific sort key equivalent to the input range.
224 *
225 * @throws std::bad_cast if the current locale does not have a collate
226 * facet.
227 */
228 template<typename _Fwd_iter>
229 string_type
230 transform(_Fwd_iter __first, _Fwd_iter __last) const
231 {
234 string_type __s(__first, __last);
235 return __fclt.transform(__s.data(), __s.data() + __s.size());
236 }
237
238 /**
239 * @brief Gets a sort key for a character sequence, independent of case.
240 *
241 * @param __first beginning of the character sequence.
242 * @param __last one-past-the-end of the character sequence.
243 *
244 * Effects: if typeid(use_facet<collate<_Ch_type> >) ==
245 * typeid(collate_byname<_Ch_type>) and the form of the sort key
246 * returned by collate_byname<_Ch_type>::transform(__first, __last)
247 * is known and can be converted into a primary sort key
248 * then returns that key, otherwise returns an empty string.
249 *
250 * @todo Implement this function correctly.
251 */
252 template<typename _Fwd_iter>
253 string_type
254 transform_primary(_Fwd_iter __first, _Fwd_iter __last) const
255 {
256 // TODO : this is not entirely correct.
257 // This function requires extra support from the platform.
258 //
259 // Read http://gcc.gnu.org/ml/libstdc++/2013-09/msg00117.html and
260 // http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2003/n1429.htm
261 // for details.
262 typedef std::ctype<char_type> __ctype_type;
263 const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale));
264 std::vector<char_type> __s(__first, __last);
265 __fctyp.tolower(__s.data(), __s.data() + __s.size());
266 return this->transform(__s.data(), __s.data() + __s.size());
267 }
268
269 /**
270 * @brief Gets a collation element by name.
271 *
272 * @param __first beginning of the collation element name.
273 * @param __last one-past-the-end of the collation element name.
274 *
275 * @returns a sequence of one or more characters that represents the
276 * collating element consisting of the character sequence designated by
277 * the iterator range [__first, __last). Returns an empty string if the
278 * character sequence is not a valid collating element.
279 */
280 template<typename _Fwd_iter>
281 string_type
282 lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const;
283
284 /**
285 * @brief Maps one or more characters to a named character
286 * classification.
287 *
288 * @param __first beginning of the character sequence.
289 * @param __last one-past-the-end of the character sequence.
290 * @param __icase ignores the case of the classification name.
291 *
292 * @returns an unspecified value that represents the character
293 * classification named by the character sequence designated by
294 * the iterator range [__first, __last). If @p icase is true,
295 * the returned mask identifies the classification regardless of
296 * the case of the characters to be matched (for example,
297 * [[:lower:]] is the same as [[:alpha:]]), otherwise a
298 * case-dependent classification is returned. The value
299 * returned shall be independent of the case of the characters
300 * in the character sequence. If the name is not recognized then
301 * returns a value that compares equal to 0.
302 *
303 * At least the following names (or their wide-character equivalent) are
304 * supported.
305 * - d
306 * - w
307 * - s
308 * - alnum
309 * - alpha
310 * - blank
311 * - cntrl
312 * - digit
313 * - graph
314 * - lower
315 * - print
316 * - punct
317 * - space
318 * - upper
319 * - xdigit
320 */
321 template<typename _Fwd_iter>
322 char_class_type
323 lookup_classname(_Fwd_iter __first, _Fwd_iter __last,
324 bool __icase = false) const;
325
326 /**
327 * @brief Determines if @p c is a member of an identified class.
328 *
329 * @param __c a character.
330 * @param __f a class type (as returned from lookup_classname).
331 *
332 * @returns true if the character @p __c is a member of the classification
333 * represented by @p __f, false otherwise.
334 *
335 * @throws std::bad_cast if the current locale does not have a ctype
336 * facet.
337 */
338 bool
339 isctype(_Ch_type __c, char_class_type __f) const;
340
341 /**
342 * @brief Converts a digit to an int.
343 *
344 * @param __ch a character representing a digit.
345 * @param __radix the radix if the numeric conversion (limited to 8, 10,
346 * or 16).
347 *
348 * @returns the value represented by the digit __ch in base radix if the
349 * character __ch is a valid digit in base radix; otherwise returns -1.
350 */
351 int
352 value(_Ch_type __ch, int __radix) const;
353
354 /**
355 * @brief Imbues the regex_traits object with a copy of a new locale.
356 *
357 * @param __loc A locale.
358 *
359 * @returns a copy of the previous locale in use by the regex_traits
360 * object.
361 *
362 * @note Calling imbue with a different locale than the one currently in
363 * use invalidates all cached data held by *this.
364 */
365 locale_type
367 {
368 std::swap(_M_locale, __loc);
369 return __loc;
370 }
371
372 /**
373 * @brief Gets a copy of the current locale in use by the regex_traits
374 * object.
375 */
376 locale_type
377 getloc() const
378 { return _M_locale; }
379
380 protected:
381 locale_type _M_locale;
382 };
383
384 // [7.8] Class basic_regex
385 /**
386 * Objects of specializations of this class represent regular expressions
387 * constructed from sequences of character type @p _Ch_type.
388 *
389 * Storage for the regular expression is allocated and deallocated as
390 * necessary by the member functions of this class.
391 */
392 template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>>
394 {
395 public:
396 static_assert(is_same<_Ch_type, typename _Rx_traits::char_type>::value,
397 "regex traits class must have the same char_type");
398
399 // types:
400 typedef _Ch_type value_type;
401 typedef _Rx_traits traits_type;
402 typedef typename traits_type::string_type string_type;
404 typedef typename traits_type::locale_type locale_type;
405
406 /**
407 * @name Constants
408 * std [28.8.1](1)
409 */
410 //@{
421 //@}
422
423 // [7.8.2] construct/copy/destroy
424 /**
425 * Constructs a basic regular expression that does not match any
426 * character sequence.
427 */
429 : _M_flags(ECMAScript), _M_loc(), _M_automaton(nullptr)
430 { }
431
432 /**
433 * @brief Constructs a basic regular expression from the
434 * sequence [__p, __p + char_traits<_Ch_type>::length(__p))
435 * interpreted according to the flags in @p __f.
436 *
437 * @param __p A pointer to the start of a C-style null-terminated string
438 * containing a regular expression.
439 * @param __f Flags indicating the syntax rules and options.
440 *
441 * @throws regex_error if @p __p is not a valid regular expression.
442 */
443 explicit
445 : basic_regex(__p, __p + char_traits<_Ch_type>::length(__p), __f)
446 { }
447
448 /**
449 * @brief Constructs a basic regular expression from the sequence
450 * [p, p + len) interpreted according to the flags in @p f.
451 *
452 * @param __p A pointer to the start of a string containing a regular
453 * expression.
454 * @param __len The length of the string containing the regular
455 * expression.
456 * @param __f Flags indicating the syntax rules and options.
457 *
458 * @throws regex_error if @p __p is not a valid regular expression.
459 */
460 basic_regex(const _Ch_type* __p, std::size_t __len,
461 flag_type __f = ECMAScript)
462 : basic_regex(__p, __p + __len, __f)
463 { }
464
465 /**
466 * @brief Copy-constructs a basic regular expression.
467 *
468 * @param __rhs A @p regex object.
469 */
470 basic_regex(const basic_regex& __rhs) = default;
471
472 /**
473 * @brief Move-constructs a basic regular expression.
474 *
475 * @param __rhs A @p regex object.
476 */
477 basic_regex(basic_regex&& __rhs) noexcept = default;
478
479 /**
480 * @brief Constructs a basic regular expression from the string
481 * @p s interpreted according to the flags in @p f.
482 *
483 * @param __s A string containing a regular expression.
484 * @param __f Flags indicating the syntax rules and options.
485 *
486 * @throws regex_error if @p __s is not a valid regular expression.
487 */
488 template<typename _Ch_traits, typename _Ch_alloc>
489 explicit
491 _Ch_alloc>& __s,
492 flag_type __f = ECMAScript)
493 : basic_regex(__s.data(), __s.data() + __s.size(), __f)
494 { }
495
496 /**
497 * @brief Constructs a basic regular expression from the range
498 * [first, last) interpreted according to the flags in @p f.
499 *
500 * @param __first The start of a range containing a valid regular
501 * expression.
502 * @param __last The end of a range containing a valid regular
503 * expression.
504 * @param __f The format flags of the regular expression.
505 *
506 * @throws regex_error if @p [__first, __last) is not a valid regular
507 * expression.
508 */
509 template<typename _FwdIter>
511 flag_type __f = ECMAScript)
512 : basic_regex(std::move(__first), std::move(__last), locale_type(), __f)
513 { }
514
515 /**
516 * @brief Constructs a basic regular expression from an initializer list.
517 *
518 * @param __l The initializer list.
519 * @param __f The format flags of the regular expression.
520 *
521 * @throws regex_error if @p __l is not a valid regular expression.
522 */
526
527 /**
528 * @brief Destroys a basic regular expression.
529 */
531 { }
532
533 /**
534 * @brief Assigns one regular expression to another.
535 */
538 { return this->assign(__rhs); }
539
540 /**
541 * @brief Move-assigns one regular expression to another.
542 */
545 { return this->assign(std::move(__rhs)); }
546
547 /**
548 * @brief Replaces a regular expression with a new one constructed from
549 * a C-style null-terminated string.
550 *
551 * @param __p A pointer to the start of a null-terminated C-style string
552 * containing a regular expression.
553 */
555 operator=(const _Ch_type* __p)
556 { return this->assign(__p); }
557
558 /**
559 * @brief Replaces a regular expression with a new one constructed from
560 * an initializer list.
561 *
562 * @param __l The initializer list.
563 *
564 * @throws regex_error if @p __l is not a valid regular expression.
565 */
568 { return this->assign(__l.begin(), __l.end()); }
569
570 /**
571 * @brief Replaces a regular expression with a new one constructed from
572 * a string.
573 *
574 * @param __s A pointer to a string containing a regular expression.
575 */
576 template<typename _Ch_traits, typename _Alloc>
580
581 // [7.8.3] assign
582 /**
583 * @brief the real assignment operator.
584 *
585 * @param __rhs Another regular expression object.
586 */
589 {
591 this->swap(__tmp);
592 return *this;
593 }
594
595 /**
596 * @brief The move-assignment operator.
597 *
598 * @param __rhs Another regular expression object.
599 */
602 {
603 basic_regex __tmp(std::move(__rhs));
604 this->swap(__tmp);
605 return *this;
606 }
607
608 /**
609 * @brief Assigns a new regular expression to a regex object from a
610 * C-style null-terminated string containing a regular expression
611 * pattern.
612 *
613 * @param __p A pointer to a C-style null-terminated string containing
614 * a regular expression pattern.
615 * @param __flags Syntax option flags.
616 *
617 * @throws regex_error if __p does not contain a valid regular
618 * expression pattern interpreted according to @p __flags. If
619 * regex_error is thrown, *this remains unchanged.
620 */
622 assign(const _Ch_type* __p, flag_type __flags = ECMAScript)
623 { return this->assign(string_type(__p), __flags); }
624
625 /**
626 * @brief Assigns a new regular expression to a regex object from a
627 * C-style string containing a regular expression pattern.
628 *
629 * @param __p A pointer to a C-style string containing a
630 * regular expression pattern.
631 * @param __len The length of the regular expression pattern string.
632 * @param __flags Syntax option flags.
633 *
634 * @throws regex_error if p does not contain a valid regular
635 * expression pattern interpreted according to @p __flags. If
636 * regex_error is thrown, *this remains unchanged.
637 */
639 assign(const _Ch_type* __p, std::size_t __len, flag_type __flags)
640 { return this->assign(string_type(__p, __len), __flags); }
641
642 /**
643 * @brief Assigns a new regular expression to a regex object from a
644 * string containing a regular expression pattern.
645 *
646 * @param __s A string containing a regular expression pattern.
647 * @param __flags Syntax option flags.
648 *
649 * @throws regex_error if __s does not contain a valid regular
650 * expression pattern interpreted according to @p __flags. If
651 * regex_error is thrown, *this remains unchanged.
652 */
653 template<typename _Ch_traits, typename _Alloc>
656 flag_type __flags = ECMAScript)
657 {
658 return this->assign(basic_regex(__s.data(), __s.data() + __s.size(),
659 _M_loc, __flags));
660 }
661
662 /**
663 * @brief Assigns a new regular expression to a regex object.
664 *
665 * @param __first The start of a range containing a valid regular
666 * expression.
667 * @param __last The end of a range containing a valid regular
668 * expression.
669 * @param __flags Syntax option flags.
670 *
671 * @throws regex_error if p does not contain a valid regular
672 * expression pattern interpreted according to @p __flags. If
673 * regex_error is thrown, the object remains unchanged.
674 */
675 template<typename _InputIterator>
678 flag_type __flags = ECMAScript)
679 { return this->assign(string_type(__first, __last), __flags); }
680
681 /**
682 * @brief Assigns a new regular expression to a regex object.
683 *
684 * @param __l An initializer list representing a regular expression.
685 * @param __flags Syntax option flags.
686 *
687 * @throws regex_error if @p __l does not contain a valid
688 * regular expression pattern interpreted according to @p
689 * __flags. If regex_error is thrown, the object remains
690 * unchanged.
691 */
694 { return this->assign(__l.begin(), __l.end(), __flags); }
695
696 // [7.8.4] const operations
697 /**
698 * @brief Gets the number of marked subexpressions within the regular
699 * expression.
700 */
701 unsigned int
703 {
704 if (_M_automaton)
705 return _M_automaton->_M_sub_count() - 1;
706 return 0;
707 }
708
709 /**
710 * @brief Gets the flags used to construct the regular expression
711 * or in the last call to assign().
712 */
713 flag_type
714 flags() const
715 { return _M_flags; }
716
717 // [7.8.5] locale
718 /**
719 * @brief Imbues the regular expression object with the given locale.
720 *
721 * @param __loc A locale.
722 */
723 locale_type
724 imbue(locale_type __loc)
725 {
726 std::swap(__loc, _M_loc);
727 _M_automaton.reset();
728 return __loc;
729 }
730
731 /**
732 * @brief Gets the locale currently imbued in the regular expression
733 * object.
734 */
735 locale_type
736 getloc() const
737 { return _M_loc; }
738
739 // [7.8.6] swap
740 /**
741 * @brief Swaps the contents of two regular expression objects.
742 *
743 * @param __rhs Another regular expression object.
744 */
745 void
747 {
748 std::swap(_M_flags, __rhs._M_flags);
749 std::swap(_M_loc, __rhs._M_loc);
750 std::swap(_M_automaton, __rhs._M_automaton);
751 }
752
753#ifdef _GLIBCXX_DEBUG
754 void
756 { _M_automaton->_M_dot(__ostr); }
757#endif
758
759 private:
761
762 template<typename _FwdIter>
763 basic_regex(_FwdIter __first, _FwdIter __last, locale_type __loc,
764 flag_type __f)
765 : _M_flags(__f), _M_loc(std::move(__loc)),
766 _M_automaton(__detail::__compile_nfa<_FwdIter, _Rx_traits>(
767 std::move(__first), std::move(__last), _M_loc, _M_flags))
768 { }
769
770 template<typename _Bp, typename _Ap, typename _Cp, typename _Rp,
771 __detail::_RegexExecutorPolicy, bool>
772 friend bool __detail::
773#if _GLIBCXX_INLINE_VERSION
774 __7:: // Required due to PR c++/59256
775#endif
779
780 template<typename, typename, typename, bool>
782
783 flag_type _M_flags;
784 locale_type _M_loc;
785 _AutomatonPtr _M_automaton;
786 };
787
788 template<typename _Ch, typename _Tr>
791
792 template<typename _Ch, typename _Tr>
795
796 template<typename _Ch, typename _Tr>
799
800 template<typename _Ch, typename _Tr>
803
804 template<typename _Ch, typename _Tr>
807
808 template<typename _Ch, typename _Tr>
811
812 template<typename _Ch, typename _Tr>
815
816 template<typename _Ch, typename _Tr>
819
820 template<typename _Ch, typename _Tr>
823
824 template<typename _Ch, typename _Tr>
827
828 /** @brief Standard regular expressions. */
830
831#ifdef _GLIBCXX_USE_WCHAR_T
832 /** @brief Standard wide-character regular expressions. */
834#endif
835
836
837 // [7.8.6] basic_regex swap
838 /**
839 * @brief Swaps the contents of two regular expression objects.
840 * @param __lhs First regular expression.
841 * @param __rhs Second regular expression.
842 */
843 template<typename _Ch_type, typename _Rx_traits>
844 inline void
848
849
850 // [7.9] Class template sub_match
851 /**
852 * A sequence of characters matched by a particular marked sub-expression.
853 *
854 * An object of this class is essentially a pair of iterators marking a
855 * matched subexpression within a regular expression pattern match. Such
856 * objects can be converted to and compared with std::basic_string objects
857 * of a similar base character type as the pattern matched by the regular
858 * expression.
859 *
860 * The iterators that make up the pair are the usual half-open interval
861 * referencing the actual original pattern matched.
862 */
863 template<typename _BiIter>
864 class sub_match : public std::pair<_BiIter, _BiIter>
865 {
867
868 public:
869 typedef typename __iter_traits::value_type value_type;
870 typedef typename __iter_traits::difference_type difference_type;
871 typedef _BiIter iterator;
873
874 bool matched;
875
876 constexpr sub_match() : matched() { }
877
878 /**
879 * Gets the length of the matching sequence.
880 */
881 difference_type
882 length() const
883 { return this->matched ? std::distance(this->first, this->second) : 0; }
884
885 /**
886 * @brief Gets the matching sequence as a string.
887 *
888 * @returns the matching sequence as a string.
889 *
890 * This is the implicit conversion operator. It is identical to the
891 * str() member function except that it will want to pop up in
892 * unexpected places and cause a great deal of confusion and cursing
893 * from the unwary.
894 */
895 operator string_type() const
896 {
897 return this->matched
898 ? string_type(this->first, this->second)
899 : string_type();
900 }
901
902 /**
903 * @brief Gets the matching sequence as a string.
904 *
905 * @returns the matching sequence as a string.
906 */
907 string_type
908 str() const
909 {
910 return this->matched
911 ? string_type(this->first, this->second)
912 : string_type();
913 }
914
915 /**
916 * @brief Compares this and another matched sequence.
917 *
918 * @param __s Another matched sequence to compare to this one.
919 *
920 * @retval <0 this matched sequence will collate before @p __s.
921 * @retval =0 this matched sequence is equivalent to @p __s.
922 * @retval <0 this matched sequence will collate after @p __s.
923 */
924 int
925 compare(const sub_match& __s) const
926 { return this->str().compare(__s.str()); }
927
928 /**
929 * @brief Compares this sub_match to a string.
930 *
931 * @param __s A string to compare to this sub_match.
932 *
933 * @retval <0 this matched sequence will collate before @p __s.
934 * @retval =0 this matched sequence is equivalent to @p __s.
935 * @retval <0 this matched sequence will collate after @p __s.
936 */
937 int
938 compare(const string_type& __s) const
939 { return this->str().compare(__s); }
940
941 /**
942 * @brief Compares this sub_match to a C-style string.
943 *
944 * @param __s A C-style string to compare to this sub_match.
945 *
946 * @retval <0 this matched sequence will collate before @p __s.
947 * @retval =0 this matched sequence is equivalent to @p __s.
948 * @retval <0 this matched sequence will collate after @p __s.
949 */
950 int
951 compare(const value_type* __s) const
952 { return this->str().compare(__s); }
953 };
954
955
956 /** @brief Standard regex submatch over a C-style null-terminated string. */
958
959 /** @brief Standard regex submatch over a standard string. */
961
962#ifdef _GLIBCXX_USE_WCHAR_T
963 /** @brief Regex submatch over a C-style null-terminated wide string. */
965
966 /** @brief Regex submatch over a standard wide string. */
968#endif
969
970 // [7.9.2] sub_match non-member operators
971
972 /**
973 * @brief Tests the equivalence of two regular expression submatches.
974 * @param __lhs First regular expression submatch.
975 * @param __rhs Second regular expression submatch.
976 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
977 */
978 template<typename _BiIter>
979 inline bool
981 { return __lhs.compare(__rhs) == 0; }
982
983 /**
984 * @brief Tests the inequivalence of two regular expression submatches.
985 * @param __lhs First regular expression submatch.
986 * @param __rhs Second regular expression submatch.
987 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
988 */
989 template<typename _BiIter>
990 inline bool
992 { return __lhs.compare(__rhs) != 0; }
993
994 /**
995 * @brief Tests the ordering of two regular expression submatches.
996 * @param __lhs First regular expression submatch.
997 * @param __rhs Second regular expression submatch.
998 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
999 */
1000 template<typename _BiIter>
1001 inline bool
1003 { return __lhs.compare(__rhs) < 0; }
1004
1005 /**
1006 * @brief Tests the ordering of two regular expression submatches.
1007 * @param __lhs First regular expression submatch.
1008 * @param __rhs Second regular expression submatch.
1009 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1010 */
1011 template<typename _BiIter>
1012 inline bool
1014 { return __lhs.compare(__rhs) <= 0; }
1015
1016 /**
1017 * @brief Tests the ordering of two regular expression submatches.
1018 * @param __lhs First regular expression submatch.
1019 * @param __rhs Second regular expression submatch.
1020 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1021 */
1022 template<typename _BiIter>
1023 inline bool
1025 { return __lhs.compare(__rhs) >= 0; }
1026
1027 /**
1028 * @brief Tests the ordering of two regular expression submatches.
1029 * @param __lhs First regular expression submatch.
1030 * @param __rhs Second regular expression submatch.
1031 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1032 */
1033 template<typename _BiIter>
1034 inline bool
1036 { return __lhs.compare(__rhs) > 0; }
1037
1038 // Alias for sub_match'd string.
1039 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1040 using __sub_match_string = basic_string<
1041 typename iterator_traits<_Bi_iter>::value_type,
1042 _Ch_traits, _Ch_alloc>;
1043
1044 /**
1045 * @brief Tests the equivalence of a string and a regular expression
1046 * submatch.
1047 * @param __lhs A string.
1048 * @param __rhs A regular expression submatch.
1049 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1050 */
1051 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1052 inline bool
1055 {
1056 typedef typename sub_match<_Bi_iter>::string_type string_type;
1057 return __rhs.compare(string_type(__lhs.data(), __lhs.size())) == 0;
1058 }
1059
1060 /**
1061 * @brief Tests the inequivalence of a string and a regular expression
1062 * submatch.
1063 * @param __lhs A string.
1064 * @param __rhs A regular expression submatch.
1065 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1066 */
1067 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1068 inline bool
1072
1073 /**
1074 * @brief Tests the ordering of a string and a regular expression submatch.
1075 * @param __lhs A string.
1076 * @param __rhs A regular expression submatch.
1077 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1078 */
1079 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1080 inline bool
1083 {
1084 typedef typename sub_match<_Bi_iter>::string_type string_type;
1085 return __rhs.compare(string_type(__lhs.data(), __lhs.size())) > 0;
1086 }
1087
1088 /**
1089 * @brief Tests the ordering of a string and a regular expression submatch.
1090 * @param __lhs A string.
1091 * @param __rhs A regular expression submatch.
1092 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1093 */
1094 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1095 inline bool
1099
1100 /**
1101 * @brief Tests the ordering of a string and a regular expression submatch.
1102 * @param __lhs A string.
1103 * @param __rhs A regular expression submatch.
1104 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1105 */
1106 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1107 inline bool
1111
1112 /**
1113 * @brief Tests the ordering of a string and a regular expression submatch.
1114 * @param __lhs A string.
1115 * @param __rhs A regular expression submatch.
1116 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1117 */
1118 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1123
1124 /**
1125 * @brief Tests the equivalence of a regular expression submatch and a
1126 * string.
1127 * @param __lhs A regular expression submatch.
1128 * @param __rhs A string.
1129 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1130 */
1131 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1132 inline bool
1133 operator==(const sub_match<_Bi_iter>& __lhs,
1135 {
1136 typedef typename sub_match<_Bi_iter>::string_type string_type;
1137 return __lhs.compare(string_type(__rhs.data(), __rhs.size())) == 0;
1138 }
1139
1140 /**
1141 * @brief Tests the inequivalence of a regular expression submatch and a
1142 * string.
1143 * @param __lhs A regular expression submatch.
1144 * @param __rhs A string.
1145 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1146 */
1147 template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
1148 inline bool
1152
1153 /**
1154 * @brief Tests the ordering of a regular expression submatch and a string.
1155 * @param __lhs A regular expression submatch.
1156 * @param __rhs A string.
1157 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1158 */
1159 template<typename _Bi_iter, class _Ch_traits, class _Ch_alloc>
1160 inline bool
1163 {
1164 typedef typename sub_match<_Bi_iter>::string_type string_type;
1165 return __lhs.compare(string_type(__rhs.data(), __rhs.size())) < 0;
1166 }
1167
1168 /**
1169 * @brief Tests the ordering of a regular expression submatch and a string.
1170 * @param __lhs A regular expression submatch.
1171 * @param __rhs A string.
1172 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1173 */
1174 template<typename _Bi_iter, class _Ch_traits, class _Ch_alloc>
1175 inline bool
1179
1180 /**
1181 * @brief Tests the ordering of a regular expression submatch and a string.
1182 * @param __lhs A regular expression submatch.
1183 * @param __rhs A string.
1184 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1185 */
1186 template<typename _Bi_iter, class _Ch_traits, class _Ch_alloc>
1187 inline bool
1191
1192 /**
1193 * @brief Tests the ordering of a regular expression submatch and a string.
1194 * @param __lhs A regular expression submatch.
1195 * @param __rhs A string.
1196 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1197 */
1198 template<typename _Bi_iter, class _Ch_traits, class _Ch_alloc>
1203
1204 /**
1205 * @brief Tests the equivalence of a C string and a regular expression
1206 * submatch.
1207 * @param __lhs A C string.
1208 * @param __rhs A regular expression submatch.
1209 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1210 */
1211 template<typename _Bi_iter>
1212 inline bool
1213 operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1215 { return __rhs.compare(__lhs) == 0; }
1216
1217 /**
1218 * @brief Tests the inequivalence of an iterator value and a regular
1219 * expression submatch.
1220 * @param __lhs A regular expression submatch.
1221 * @param __rhs A string.
1222 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1223 */
1224 template<typename _Bi_iter>
1225 inline bool
1226 operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1228 { return !(__lhs == __rhs); }
1229
1230 /**
1231 * @brief Tests the ordering of a string and a regular expression submatch.
1232 * @param __lhs A string.
1233 * @param __rhs A regular expression submatch.
1234 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1235 */
1236 template<typename _Bi_iter>
1237 inline bool
1238 operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1240 { return __rhs.compare(__lhs) > 0; }
1241
1242 /**
1243 * @brief Tests the ordering of a string and a regular expression submatch.
1244 * @param __lhs A string.
1245 * @param __rhs A regular expression submatch.
1246 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1247 */
1248 template<typename _Bi_iter>
1249 inline bool
1250 operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1252 { return __rhs < __lhs; }
1253
1254 /**
1255 * @brief Tests the ordering of a string and a regular expression submatch.
1256 * @param __lhs A string.
1257 * @param __rhs A regular expression submatch.
1258 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1259 */
1260 template<typename _Bi_iter>
1261 inline bool
1262 operator>=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1264 { return !(__lhs < __rhs); }
1265
1266 /**
1267 * @brief Tests the ordering of a string and a regular expression submatch.
1268 * @param __lhs A string.
1269 * @param __rhs A regular expression submatch.
1270 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1271 */
1272 template<typename _Bi_iter>
1273 inline bool
1274 operator<=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
1276 { return !(__rhs < __lhs); }
1277
1278 /**
1279 * @brief Tests the equivalence of a regular expression submatch and a
1280 * string.
1281 * @param __lhs A regular expression submatch.
1282 * @param __rhs A pointer to a string?
1283 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1284 */
1285 template<typename _Bi_iter>
1286 inline bool
1287 operator==(const sub_match<_Bi_iter>& __lhs,
1288 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1289 { return __lhs.compare(__rhs) == 0; }
1290
1291 /**
1292 * @brief Tests the inequivalence of a regular expression submatch and a
1293 * string.
1294 * @param __lhs A regular expression submatch.
1295 * @param __rhs A pointer to a string.
1296 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1297 */
1298 template<typename _Bi_iter>
1299 inline bool
1300 operator!=(const sub_match<_Bi_iter>& __lhs,
1301 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1302 { return !(__lhs == __rhs); }
1303
1304 /**
1305 * @brief Tests the ordering of a regular expression submatch and a string.
1306 * @param __lhs A regular expression submatch.
1307 * @param __rhs A string.
1308 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1309 */
1310 template<typename _Bi_iter>
1311 inline bool
1313 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1314 { return __lhs.compare(__rhs) < 0; }
1315
1316 /**
1317 * @brief Tests the ordering of a regular expression submatch and a string.
1318 * @param __lhs A regular expression submatch.
1319 * @param __rhs A string.
1320 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1321 */
1322 template<typename _Bi_iter>
1323 inline bool
1324 operator>(const sub_match<_Bi_iter>& __lhs,
1325 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1326 { return __rhs < __lhs; }
1327
1328 /**
1329 * @brief Tests the ordering of a regular expression submatch and a string.
1330 * @param __lhs A regular expression submatch.
1331 * @param __rhs A string.
1332 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1333 */
1334 template<typename _Bi_iter>
1335 inline bool
1336 operator>=(const sub_match<_Bi_iter>& __lhs,
1337 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1338 { return !(__lhs < __rhs); }
1339
1340 /**
1341 * @brief Tests the ordering of a regular expression submatch and a string.
1342 * @param __lhs A regular expression submatch.
1343 * @param __rhs A string.
1344 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1345 */
1346 template<typename _Bi_iter>
1347 inline bool
1349 typename iterator_traits<_Bi_iter>::value_type const* __rhs)
1350 { return !(__rhs < __lhs); }
1351
1352 /**
1353 * @brief Tests the equivalence of a string and a regular expression
1354 * submatch.
1355 * @param __lhs A string.
1356 * @param __rhs A regular expression submatch.
1357 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1358 */
1359 template<typename _Bi_iter>
1360 inline bool
1361 operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1363 {
1364 typedef typename sub_match<_Bi_iter>::string_type string_type;
1365 return __rhs.compare(string_type(1, __lhs)) == 0;
1366 }
1367
1368 /**
1369 * @brief Tests the inequivalence of a string and a regular expression
1370 * submatch.
1371 * @param __lhs A string.
1372 * @param __rhs A regular expression submatch.
1373 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1374 */
1375 template<typename _Bi_iter>
1376 inline bool
1377 operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1379 { return !(__lhs == __rhs); }
1380
1381 /**
1382 * @brief Tests the ordering of a string and a regular expression submatch.
1383 * @param __lhs A string.
1384 * @param __rhs A regular expression submatch.
1385 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1386 */
1387 template<typename _Bi_iter>
1388 inline bool
1389 operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1391 {
1392 typedef typename sub_match<_Bi_iter>::string_type string_type;
1393 return __rhs.compare(string_type(1, __lhs)) > 0;
1394 }
1395
1396 /**
1397 * @brief Tests the ordering of a string and a regular expression submatch.
1398 * @param __lhs A string.
1399 * @param __rhs A regular expression submatch.
1400 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1401 */
1402 template<typename _Bi_iter>
1403 inline bool
1404 operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1406 { return __rhs < __lhs; }
1407
1408 /**
1409 * @brief Tests the ordering of a string and a regular expression submatch.
1410 * @param __lhs A string.
1411 * @param __rhs A regular expression submatch.
1412 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1413 */
1414 template<typename _Bi_iter>
1415 inline bool
1416 operator>=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1418 { return !(__lhs < __rhs); }
1419
1420 /**
1421 * @brief Tests the ordering of a string and a regular expression submatch.
1422 * @param __lhs A string.
1423 * @param __rhs A regular expression submatch.
1424 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1425 */
1426 template<typename _Bi_iter>
1427 inline bool
1428 operator<=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
1430 { return !(__rhs < __lhs); }
1431
1432 /**
1433 * @brief Tests the equivalence of a regular expression submatch and a
1434 * string.
1435 * @param __lhs A regular expression submatch.
1436 * @param __rhs A const string reference.
1437 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1438 */
1439 template<typename _Bi_iter>
1440 inline bool
1441 operator==(const sub_match<_Bi_iter>& __lhs,
1442 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1443 {
1444 typedef typename sub_match<_Bi_iter>::string_type string_type;
1445 return __lhs.compare(string_type(1, __rhs)) == 0;
1446 }
1447
1448 /**
1449 * @brief Tests the inequivalence of a regular expression submatch and a
1450 * string.
1451 * @param __lhs A regular expression submatch.
1452 * @param __rhs A const string reference.
1453 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1454 */
1455 template<typename _Bi_iter>
1456 inline bool
1457 operator!=(const sub_match<_Bi_iter>& __lhs,
1458 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1459 { return !(__lhs == __rhs); }
1460
1461 /**
1462 * @brief Tests the ordering of a regular expression submatch and a string.
1463 * @param __lhs A regular expression submatch.
1464 * @param __rhs A const string reference.
1465 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1466 */
1467 template<typename _Bi_iter>
1468 inline bool
1470 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1471 {
1472 typedef typename sub_match<_Bi_iter>::string_type string_type;
1473 return __lhs.compare(string_type(1, __rhs)) < 0;
1474 }
1475
1476 /**
1477 * @brief Tests the ordering of a regular expression submatch and a string.
1478 * @param __lhs A regular expression submatch.
1479 * @param __rhs A const string reference.
1480 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1481 */
1482 template<typename _Bi_iter>
1483 inline bool
1484 operator>(const sub_match<_Bi_iter>& __lhs,
1485 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1486 { return __rhs < __lhs; }
1487
1488 /**
1489 * @brief Tests the ordering of a regular expression submatch and a string.
1490 * @param __lhs A regular expression submatch.
1491 * @param __rhs A const string reference.
1492 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1493 */
1494 template<typename _Bi_iter>
1495 inline bool
1496 operator>=(const sub_match<_Bi_iter>& __lhs,
1497 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1498 { return !(__lhs < __rhs); }
1499
1500 /**
1501 * @brief Tests the ordering of a regular expression submatch and a string.
1502 * @param __lhs A regular expression submatch.
1503 * @param __rhs A const string reference.
1504 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1505 */
1506 template<typename _Bi_iter>
1507 inline bool
1509 typename iterator_traits<_Bi_iter>::value_type const& __rhs)
1510 { return !(__rhs < __lhs); }
1511
1512 /**
1513 * @brief Inserts a matched string into an output stream.
1514 *
1515 * @param __os The output stream.
1516 * @param __m A submatch string.
1517 *
1518 * @returns the output stream with the submatch string inserted.
1519 */
1520 template<typename _Ch_type, typename _Ch_traits, typename _Bi_iter>
1521 inline
1522 basic_ostream<_Ch_type, _Ch_traits>&
1523 operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
1524 const sub_match<_Bi_iter>& __m)
1525 { return __os << __m.str(); }
1526
1527 // [7.10] Class template match_results
1528
1529 /**
1530 * @brief The results of a match or search operation.
1531 *
1532 * A collection of character sequences representing the result of a regular
1533 * expression match. Storage for the collection is allocated and freed as
1534 * necessary by the member functions of class template match_results.
1535 *
1536 * This class satisfies the Sequence requirements, with the exception that
1537 * only the operations defined for a const-qualified Sequence are supported.
1538 *
1539 * The sub_match object stored at index 0 represents sub-expression 0, i.e.
1540 * the whole match. In this case the %sub_match member matched is always true.
1541 * The sub_match object stored at index n denotes what matched the marked
1542 * sub-expression n within the matched expression. If the sub-expression n
1543 * participated in a regular expression match then the %sub_match member
1544 * matched evaluates to true, and members first and second denote the range
1545 * of characters [first, second) which formed that match. Otherwise matched
1546 * is false, and members first and second point to the end of the sequence
1547 * that was searched.
1548 *
1549 * @nosubgrouping
1550 */
1551 template<typename _Bi_iter,
1552 typename _Alloc = allocator<sub_match<_Bi_iter> > >
1554 : private std::vector<sub_match<_Bi_iter>, _Alloc>
1555 {
1556 private:
1557 /*
1558 * The vector base is empty if this does not represent a match (!ready());
1559 * Otherwise if it's a match failure, it contains 3 elements:
1560 * [0] unmatched
1561 * [1] prefix
1562 * [2] suffix
1563 * Otherwise it contains n+4 elements where n is the number of marked
1564 * sub-expressions:
1565 * [0] entire match
1566 * [1] 1st marked subexpression
1567 * ...
1568 * [n] nth marked subexpression
1569 * [n+1] unmatched
1570 * [n+2] prefix
1571 * [n+3] suffix
1572 */
1574 typedef std::iterator_traits<_Bi_iter> __iter_traits;
1576
1577 public:
1578 /**
1579 * @name 10.? Public Types
1580 */
1581 //@{
1583 typedef const value_type& const_reference;
1584 typedef const_reference reference;
1585 typedef typename _Base_type::const_iterator const_iterator;
1586 typedef const_iterator iterator;
1587 typedef typename __iter_traits::difference_type difference_type;
1588 typedef typename allocator_traits<_Alloc>::size_type size_type;
1589 typedef _Alloc allocator_type;
1590 typedef typename __iter_traits::value_type char_type;
1592 //@}
1593
1594 public:
1595 /**
1596 * @name 28.10.1 Construction, Copying, and Destruction
1597 */
1598 //@{
1599
1600 /**
1601 * @brief Constructs a default %match_results container.
1602 * @post size() returns 0 and str() returns an empty string.
1603 */
1604 explicit
1605 match_results(const _Alloc& __a = _Alloc())
1606 : _Base_type(__a)
1607 { }
1608
1609 /**
1610 * @brief Copy constructs a %match_results.
1611 */
1613
1614 /**
1615 * @brief Move constructs a %match_results.
1616 */
1617 match_results(match_results&& __rhs) noexcept = default;
1618
1619 /**
1620 * @brief Assigns rhs to *this.
1621 */
1623 operator=(const match_results& __rhs) = default;
1624
1625 /**
1626 * @brief Move-assigns rhs to *this.
1627 */
1630
1631 /**
1632 * @brief Destroys a %match_results object.
1633 */
1635 { }
1636
1637 //@}
1638
1639 // 28.10.2, state:
1640 /**
1641 * @brief Indicates if the %match_results is ready.
1642 * @retval true The object has a fully-established result state.
1643 * @retval false The object is not ready.
1644 */
1645 bool ready() const { return !_Base_type::empty(); }
1646
1647 /**
1648 * @name 28.10.2 Size
1649 */
1650 //@{
1651
1652 /**
1653 * @brief Gets the number of matches and submatches.
1654 *
1655 * The number of matches for a given regular expression will be either 0
1656 * if there was no match or mark_count() + 1 if a match was successful.
1657 * Some matches may be empty.
1658 *
1659 * @returns the number of matches found.
1660 */
1661 size_type
1662 size() const
1663 { return _Base_type::empty() ? 0 : _Base_type::size() - 3; }
1664
1665 size_type
1666 max_size() const
1667 { return _Base_type::max_size(); }
1668
1669 /**
1670 * @brief Indicates if the %match_results contains no results.
1671 * @retval true The %match_results object is empty.
1672 * @retval false The %match_results object is not empty.
1673 */
1674 bool
1675 empty() const
1676 { return size() == 0; }
1677
1678 //@}
1679
1680 /**
1681 * @name 10.3 Element Access
1682 */
1683 //@{
1684
1685 /**
1686 * @brief Gets the length of the indicated submatch.
1687 * @param __sub indicates the submatch.
1688 * @pre ready() == true
1689 *
1690 * This function returns the length of the indicated submatch, or the
1691 * length of the entire match if @p __sub is zero (the default).
1692 */
1693 difference_type
1694 length(size_type __sub = 0) const
1695 { return (*this)[__sub].length(); }
1696
1697 /**
1698 * @brief Gets the offset of the beginning of the indicated submatch.
1699 * @param __sub indicates the submatch.
1700 * @pre ready() == true
1701 *
1702 * This function returns the offset from the beginning of the target
1703 * sequence to the beginning of the submatch, unless the value of @p __sub
1704 * is zero (the default), in which case this function returns the offset
1705 * from the beginning of the target sequence to the beginning of the
1706 * match.
1707 */
1708 difference_type
1709 position(size_type __sub = 0) const
1710 { return std::distance(_M_begin, (*this)[__sub].first); }
1711
1712 /**
1713 * @brief Gets the match or submatch converted to a string type.
1714 * @param __sub indicates the submatch.
1715 * @pre ready() == true
1716 *
1717 * This function gets the submatch (or match, if @p __sub is
1718 * zero) extracted from the target range and converted to the
1719 * associated string type.
1720 */
1721 string_type
1722 str(size_type __sub = 0) const
1723 { return string_type((*this)[__sub]); }
1724
1725 /**
1726 * @brief Gets a %sub_match reference for the match or submatch.
1727 * @param __sub indicates the submatch.
1728 * @pre ready() == true
1729 *
1730 * This function gets a reference to the indicated submatch, or
1731 * the entire match if @p __sub is zero.
1732 *
1733 * If @p __sub >= size() then this function returns a %sub_match with a
1734 * special value indicating no submatch.
1735 */
1736 const_reference
1737 operator[](size_type __sub) const
1738 {
1739 __glibcxx_assert( ready() );
1740 return __sub < size()
1741 ? _Base_type::operator[](__sub)
1742 : _M_unmatched_sub();
1743 }
1744
1745 /**
1746 * @brief Gets a %sub_match representing the match prefix.
1747 * @pre ready() == true
1748 *
1749 * This function gets a reference to a %sub_match object representing the
1750 * part of the target range between the start of the target range and the
1751 * start of the match.
1752 */
1753 const_reference
1754 prefix() const
1755 {
1756 __glibcxx_assert( ready() );
1757 return !empty() ? _M_prefix() : _M_unmatched_sub();
1758 }
1759
1760 /**
1761 * @brief Gets a %sub_match representing the match suffix.
1762 * @pre ready() == true
1763 *
1764 * This function gets a reference to a %sub_match object representing the
1765 * part of the target range between the end of the match and the end of
1766 * the target range.
1767 */
1768 const_reference
1769 suffix() const
1770 {
1771 __glibcxx_assert( ready() );
1772 return !empty() ? _M_suffix() : _M_unmatched_sub();
1773 }
1774
1775 /**
1776 * @brief Gets an iterator to the start of the %sub_match collection.
1777 */
1778 const_iterator
1779 begin() const
1780 { return _Base_type::begin(); }
1781
1782 /**
1783 * @brief Gets an iterator to the start of the %sub_match collection.
1784 */
1785 const_iterator
1786 cbegin() const
1787 { return this->begin(); }
1788
1789 /**
1790 * @brief Gets an iterator to one-past-the-end of the collection.
1791 */
1792 const_iterator
1793 end() const
1794 { return _Base_type::end() - (empty() ? 0 : 3); }
1795
1796 /**
1797 * @brief Gets an iterator to one-past-the-end of the collection.
1798 */
1799 const_iterator
1800 cend() const
1801 { return this->end(); }
1802
1803 //@}
1804
1805 /**
1806 * @name 10.4 Formatting
1807 *
1808 * These functions perform formatted substitution of the matched
1809 * character sequences into their target. The format specifiers and
1810 * escape sequences accepted by these functions are determined by
1811 * their @p flags parameter as documented above.
1812 */
1813 //@{
1814
1815 /**
1816 * @pre ready() == true
1817 */
1818 template<typename _Out_iter>
1819 _Out_iter
1821 const char_type* __fmt_last,
1823
1824 /**
1825 * @pre ready() == true
1826 */
1827 template<typename _Out_iter, typename _St, typename _Sa>
1828 _Out_iter
1831 {
1832 return format(__out, __fmt.data(), __fmt.data() + __fmt.size(),
1833 __flags);
1834 }
1835
1836 /**
1837 * @pre ready() == true
1838 */
1839 template<typename _St, typename _Sa>
1848
1849 /**
1850 * @pre ready() == true
1851 */
1852 string_type
1853 format(const char_type* __fmt,
1855 {
1858 __fmt,
1860 __flags);
1861 return __result;
1862 }
1863
1864 //@}
1865
1866 /**
1867 * @name 10.5 Allocator
1868 */
1869 //@{
1870
1871 /**
1872 * @brief Gets a copy of the allocator.
1873 */
1874 allocator_type
1876 { return _Base_type::get_allocator(); }
1877
1878 //@}
1879
1880 /**
1881 * @name 10.6 Swap
1882 */
1883 //@{
1884
1885 /**
1886 * @brief Swaps the contents of two match_results.
1887 */
1888 void
1890 {
1891 using std::swap;
1892 _Base_type::swap(__that);
1893 swap(_M_begin, __that._M_begin);
1894 }
1895 //@}
1896
1897 private:
1898 template<typename, typename, typename, bool>
1900
1901 template<typename, typename, typename>
1902 friend class regex_iterator;
1903
1904 template<typename _Bp, typename _Ap, typename _Cp, typename _Rp,
1905 __detail::_RegexExecutorPolicy, bool>
1906 friend bool __detail::
1907#if _GLIBCXX_INLINE_VERSION
1908 __7:: // Required due to PR c++/59256
1909#endif
1911 const basic_regex<_Cp, _Rp>&,
1913
1914 void
1915 _M_resize(unsigned int __size)
1916 { _Base_type::resize(__size + 3); }
1917
1918 const_reference
1919 _M_unmatched_sub() const
1920 { return _Base_type::operator[](_Base_type::size() - 3); }
1921
1922 sub_match<_Bi_iter>&
1923 _M_unmatched_sub()
1924 { return _Base_type::operator[](_Base_type::size() - 3); }
1925
1926 const_reference
1927 _M_prefix() const
1928 { return _Base_type::operator[](_Base_type::size() - 2); }
1929
1930 sub_match<_Bi_iter>&
1931 _M_prefix()
1932 { return _Base_type::operator[](_Base_type::size() - 2); }
1933
1934 const_reference
1935 _M_suffix() const
1936 { return _Base_type::operator[](_Base_type::size() - 1); }
1937
1938 sub_match<_Bi_iter>&
1939 _M_suffix()
1940 { return _Base_type::operator[](_Base_type::size() - 1); }
1941
1942 _Bi_iter _M_begin;
1943 };
1944
1945 typedef match_results<const char*> cmatch;
1946 typedef match_results<string::const_iterator> smatch;
1947#ifdef _GLIBCXX_USE_WCHAR_T
1948 typedef match_results<const wchar_t*> wcmatch;
1949 typedef match_results<wstring::const_iterator> wsmatch;
1950#endif
1951
1952 // match_results comparisons
1953 /**
1954 * @brief Compares two match_results for equality.
1955 * @returns true if the two objects refer to the same match,
1956 * false otherwise.
1957 */
1958 template<typename _Bi_iter, typename _Alloc>
1959 inline bool
1962 {
1963 if (__m1.ready() != __m2.ready())
1964 return false;
1965 if (!__m1.ready()) // both are not ready
1966 return true;
1967 if (__m1.empty() != __m2.empty())
1968 return false;
1969 if (__m1.empty()) // both are empty
1970 return true;
1971 return __m1.prefix() == __m2.prefix()
1972 && __m1.size() == __m2.size()
1973 && std::equal(__m1.begin(), __m1.end(), __m2.begin())
1974 && __m1.suffix() == __m2.suffix();
1975 }
1976
1977 /**
1978 * @brief Compares two match_results for inequality.
1979 * @returns true if the two objects do not refer to the same match,
1980 * false otherwise.
1981 */
1982 template<typename _Bi_iter, class _Alloc>
1983 inline bool
1986 { return !(__m1 == __m2); }
1987
1988 // [7.10.6] match_results swap
1989 /**
1990 * @brief Swaps two match results.
1991 * @param __lhs A match result.
1992 * @param __rhs A match result.
1993 *
1994 * The contents of the two match_results objects are swapped.
1995 */
1996 template<typename _Bi_iter, typename _Alloc>
1997 inline void
2001
2002_GLIBCXX_END_NAMESPACE_CXX11
2003
2004 // [7.11.2] Function template regex_match
2005 /**
2006 * @name Matching, Searching, and Replacing
2007 */
2008 //@{
2009
2010 /**
2011 * @brief Determines if there is a match between the regular expression @p e
2012 * and all of the character sequence [first, last).
2013 *
2014 * @param __s Start of the character sequence to match.
2015 * @param __e One-past-the-end of the character sequence to match.
2016 * @param __m The match results.
2017 * @param __re The regular expression.
2018 * @param __flags Controls how the regular expression is matched.
2019 *
2020 * @retval true A match exists.
2021 * @retval false Otherwise.
2022 *
2023 * @throws an exception of type regex_error.
2024 */
2025 template<typename _Bi_iter, typename _Alloc,
2026 typename _Ch_type, typename _Rx_traits>
2027 inline bool
2029 _Bi_iter __e,
2034 {
2035 return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits,
2036 __detail::_RegexExecutorPolicy::_S_auto, true>
2037 (__s, __e, __m, __re, __flags);
2038 }
2039
2040 /**
2041 * @brief Indicates if there is a match between the regular expression @p e
2042 * and all of the character sequence [first, last).
2043 *
2044 * @param __first Beginning of the character sequence to match.
2045 * @param __last One-past-the-end of the character sequence to match.
2046 * @param __re The regular expression.
2047 * @param __flags Controls how the regular expression is matched.
2048 *
2049 * @retval true A match exists.
2050 * @retval false Otherwise.
2051 *
2052 * @throws an exception of type regex_error.
2053 */
2054 template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits>
2055 inline bool
2056 regex_match(_Bi_iter __first, _Bi_iter __last,
2060 {
2062 return regex_match(__first, __last, __what, __re, __flags);
2063 }
2064
2065 /**
2066 * @brief Determines if there is a match between the regular expression @p e
2067 * and a C-style null-terminated string.
2068 *
2069 * @param __s The C-style null-terminated string to match.
2070 * @param __m The match results.
2071 * @param __re The regular expression.
2072 * @param __f Controls how the regular expression is matched.
2073 *
2074 * @retval true A match exists.
2075 * @retval false Otherwise.
2076 *
2077 * @throws an exception of type regex_error.
2078 */
2079 template<typename _Ch_type, typename _Alloc, typename _Rx_traits>
2080 inline bool
2087
2088 /**
2089 * @brief Determines if there is a match between the regular expression @p e
2090 * and a string.
2091 *
2092 * @param __s The string to match.
2093 * @param __m The match results.
2094 * @param __re The regular expression.
2095 * @param __flags Controls how the regular expression is matched.
2096 *
2097 * @retval true A match exists.
2098 * @retval false Otherwise.
2099 *
2100 * @throws an exception of type regex_error.
2101 */
2102 template<typename _Ch_traits, typename _Ch_alloc,
2103 typename _Alloc, typename _Ch_type, typename _Rx_traits>
2104 inline bool
2107 _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m,
2111 { return regex_match(__s.begin(), __s.end(), __m, __re, __flags); }
2112
2113 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2114 // 2329. regex_match() with match_results should forbid temporary strings
2115 /// Prevent unsafe attempts to get match_results from a temporary string.
2116 template<typename _Ch_traits, typename _Ch_alloc,
2117 typename _Alloc, typename _Ch_type, typename _Rx_traits>
2118 bool
2121 _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&,
2125
2126 /**
2127 * @brief Indicates if there is a match between the regular expression @p e
2128 * and a C-style null-terminated string.
2129 *
2130 * @param __s The C-style null-terminated string to match.
2131 * @param __re The regular expression.
2132 * @param __f Controls how the regular expression is matched.
2133 *
2134 * @retval true A match exists.
2135 * @retval false Otherwise.
2136 *
2137 * @throws an exception of type regex_error.
2138 */
2139 template<typename _Ch_type, class _Rx_traits>
2140 inline bool
2146
2147 /**
2148 * @brief Indicates if there is a match between the regular expression @p e
2149 * and a string.
2150 *
2151 * @param __s [IN] The string to match.
2152 * @param __re [IN] The regular expression.
2153 * @param __flags [IN] Controls how the regular expression is matched.
2154 *
2155 * @retval true A match exists.
2156 * @retval false Otherwise.
2157 *
2158 * @throws an exception of type regex_error.
2159 */
2160 template<typename _Ch_traits, typename _Str_allocator,
2161 typename _Ch_type, typename _Rx_traits>
2162 inline bool
2168
2169 // [7.11.3] Function template regex_search
2170 /**
2171 * Searches for a regular expression within a range.
2172 * @param __s [IN] The start of the string to search.
2173 * @param __e [IN] One-past-the-end of the string to search.
2174 * @param __m [OUT] The match results.
2175 * @param __re [IN] The regular expression to search for.
2176 * @param __flags [IN] Search policy flags.
2177 * @retval true A match was found within the string.
2178 * @retval false No match was found within the string, the content of %m is
2179 * undefined.
2180 *
2181 * @throws an exception of type regex_error.
2182 */
2183 template<typename _Bi_iter, typename _Alloc,
2184 typename _Ch_type, typename _Rx_traits>
2185 inline bool
2186 regex_search(_Bi_iter __s, _Bi_iter __e,
2191 {
2192 return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits,
2193 __detail::_RegexExecutorPolicy::_S_auto, false>
2194 (__s, __e, __m, __re, __flags);
2195 }
2196
2197 /**
2198 * Searches for a regular expression within a range.
2199 * @param __first [IN] The start of the string to search.
2200 * @param __last [IN] One-past-the-end of the string to search.
2201 * @param __re [IN] The regular expression to search for.
2202 * @param __flags [IN] Search policy flags.
2203 * @retval true A match was found within the string.
2204 * @retval false No match was found within the string.
2205 *
2206 * @throws an exception of type regex_error.
2207 */
2208 template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits>
2209 inline bool
2210 regex_search(_Bi_iter __first, _Bi_iter __last,
2214 {
2216 return regex_search(__first, __last, __what, __re, __flags);
2217 }
2218
2219 /**
2220 * @brief Searches for a regular expression within a C-string.
2221 * @param __s [IN] A C-string to search for the regex.
2222 * @param __m [OUT] The set of regex matches.
2223 * @param __e [IN] The regex to search for in @p s.
2224 * @param __f [IN] The search flags.
2225 * @retval true A match was found within the string.
2226 * @retval false No match was found within the string, the content of %m is
2227 * undefined.
2228 *
2229 * @throws an exception of type regex_error.
2230 */
2231 template<typename _Ch_type, class _Alloc, class _Rx_traits>
2232 inline bool
2239
2240 /**
2241 * @brief Searches for a regular expression within a C-string.
2242 * @param __s [IN] The C-string to search.
2243 * @param __e [IN] The regular expression to search for.
2244 * @param __f [IN] Search policy flags.
2245 * @retval true A match was found within the string.
2246 * @retval false No match was found within the string.
2247 *
2248 * @throws an exception of type regex_error.
2249 */
2250 template<typename _Ch_type, typename _Rx_traits>
2251 inline bool
2256 { return regex_search(__s, __s + _Rx_traits::length(__s), __e, __f); }
2257
2258 /**
2259 * @brief Searches for a regular expression within a string.
2260 * @param __s [IN] The string to search.
2261 * @param __e [IN] The regular expression to search for.
2262 * @param __flags [IN] Search policy flags.
2263 * @retval true A match was found within the string.
2264 * @retval false No match was found within the string.
2265 *
2266 * @throws an exception of type regex_error.
2267 */
2268 template<typename _Ch_traits, typename _String_allocator,
2269 typename _Ch_type, typename _Rx_traits>
2270 inline bool
2277
2278 /**
2279 * @brief Searches for a regular expression within a string.
2280 * @param __s [IN] A C++ string to search for the regex.
2281 * @param __m [OUT] The set of regex matches.
2282 * @param __e [IN] The regex to search for in @p s.
2283 * @param __f [IN] The search flags.
2284 * @retval true A match was found within the string.
2285 * @retval false No match was found within the string, the content of %m is
2286 * undefined.
2287 *
2288 * @throws an exception of type regex_error.
2289 */
2290 template<typename _Ch_traits, typename _Ch_alloc,
2291 typename _Alloc, typename _Ch_type,
2292 typename _Rx_traits>
2293 inline bool
2296 _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m,
2300 { return regex_search(__s.begin(), __s.end(), __m, __e, __f); }
2301
2302 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2303 // 2329. regex_search() with match_results should forbid temporary strings
2304 /// Prevent unsafe attempts to get match_results from a temporary string.
2305 template<typename _Ch_traits, typename _Ch_alloc,
2306 typename _Alloc, typename _Ch_type,
2307 typename _Rx_traits>
2308 bool
2311 _Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&,
2315
2316 // std [28.11.4] Function template regex_replace
2317 /**
2318 * @brief Search for a regular expression within a range for multiple times,
2319 and replace the matched parts through filling a format string.
2320 * @param __out [OUT] The output iterator.
2321 * @param __first [IN] The start of the string to search.
2322 * @param __last [IN] One-past-the-end of the string to search.
2323 * @param __e [IN] The regular expression to search for.
2324 * @param __fmt [IN] The format string.
2325 * @param __flags [IN] Search and replace policy flags.
2326 *
2327 * @returns __out
2328 * @throws an exception of type regex_error.
2329 */
2330 template<typename _Out_iter, typename _Bi_iter,
2331 typename _Rx_traits, typename _Ch_type,
2332 typename _St, typename _Sa>
2333 inline _Out_iter
2334 regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last,
2339 {
2340 return regex_replace(__out, __first, __last, __e, __fmt.c_str(), __flags);
2341 }
2342
2343 /**
2344 * @brief Search for a regular expression within a range for multiple times,
2345 and replace the matched parts through filling a format C-string.
2346 * @param __out [OUT] The output iterator.
2347 * @param __first [IN] The start of the string to search.
2348 * @param __last [IN] One-past-the-end of the string to search.
2349 * @param __e [IN] The regular expression to search for.
2350 * @param __fmt [IN] The format C-string.
2351 * @param __flags [IN] Search and replace policy flags.
2352 *
2353 * @returns __out
2354 * @throws an exception of type regex_error.
2355 */
2356 template<typename _Out_iter, typename _Bi_iter,
2357 typename _Rx_traits, typename _Ch_type>
2358 _Out_iter
2359 regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last,
2360 const basic_regex<_Ch_type, _Rx_traits>& __e,
2361 const _Ch_type* __fmt,
2364
2365 /**
2366 * @brief Search for a regular expression within a string for multiple times,
2367 and replace the matched parts through filling a format string.
2368 * @param __s [IN] The string to search and replace.
2369 * @param __e [IN] The regular expression to search for.
2370 * @param __fmt [IN] The format string.
2371 * @param __flags [IN] Search and replace policy flags.
2372 *
2373 * @returns The string after replacing.
2374 * @throws an exception of type regex_error.
2375 */
2376 template<typename _Rx_traits, typename _Ch_type,
2377 typename _St, typename _Sa, typename _Fst, typename _Fsa>
2378 inline basic_string<_Ch_type, _St, _Sa>
2390
2391 /**
2392 * @brief Search for a regular expression within a string for multiple times,
2393 and replace the matched parts through filling a format C-string.
2394 * @param __s [IN] The string to search and replace.
2395 * @param __e [IN] The regular expression to search for.
2396 * @param __fmt [IN] The format C-string.
2397 * @param __flags [IN] Search and replace policy flags.
2398 *
2399 * @returns The string after replacing.
2400 * @throws an exception of type regex_error.
2401 */
2402 template<typename _Rx_traits, typename _Ch_type,
2403 typename _St, typename _Sa>
2404 inline basic_string<_Ch_type, _St, _Sa>
2416
2417 /**
2418 * @brief Search for a regular expression within a C-string for multiple
2419 times, and replace the matched parts through filling a format string.
2420 * @param __s [IN] The C-string to search and replace.
2421 * @param __e [IN] The regular expression to search for.
2422 * @param __fmt [IN] The format string.
2423 * @param __flags [IN] Search and replace policy flags.
2424 *
2425 * @returns The string after replacing.
2426 * @throws an exception of type regex_error.
2427 */
2428 template<typename _Rx_traits, typename _Ch_type,
2429 typename _St, typename _Sa>
2430 inline basic_string<_Ch_type>
2443
2444 /**
2445 * @brief Search for a regular expression within a C-string for multiple
2446 times, and replace the matched parts through filling a format C-string.
2447 * @param __s [IN] The C-string to search and replace.
2448 * @param __e [IN] The regular expression to search for.
2449 * @param __fmt [IN] The format C-string.
2450 * @param __flags [IN] Search and replace policy flags.
2451 *
2452 * @returns The string after replacing.
2453 * @throws an exception of type regex_error.
2454 */
2455 template<typename _Rx_traits, typename _Ch_type>
2456 inline basic_string<_Ch_type>
2469
2470 //@}
2471
2472_GLIBCXX_BEGIN_NAMESPACE_CXX11
2473
2474 // std [28.12] Class template regex_iterator
2475 /**
2476 * An iterator adaptor that will provide repeated calls of regex_search over
2477 * a range until no more matches remain.
2478 */
2479 template<typename _Bi_iter,
2480 typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type,
2481 typename _Rx_traits = regex_traits<_Ch_type> >
2483 {
2484 public:
2486 typedef match_results<_Bi_iter> value_type;
2488 typedef const value_type* pointer;
2489 typedef const value_type& reference;
2491
2492 /**
2493 * @brief Provides a singular iterator, useful for indicating
2494 * one-past-the-end of a range.
2495 */
2497 : _M_pregex()
2498 { }
2499
2500 /**
2501 * Constructs a %regex_iterator...
2502 * @param __a [IN] The start of a text range to search.
2503 * @param __b [IN] One-past-the-end of the text range to search.
2504 * @param __re [IN] The regular expression to match.
2505 * @param __m [IN] Policy flags for match rules.
2506 */
2507 regex_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re,
2510 : _M_begin(__a), _M_end(__b), _M_pregex(&__re), _M_flags(__m), _M_match()
2511 {
2512 if (!regex_search(_M_begin, _M_end, _M_match, *_M_pregex, _M_flags))
2513 *this = regex_iterator();
2514 }
2515
2516 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2517 // 2332. regex_iterator should forbid temporary regexes
2518 regex_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
2521 /**
2522 * Copy constructs a %regex_iterator.
2523 */
2525
2526 /**
2527 * @brief Assigns one %regex_iterator to another.
2528 */
2530 operator=(const regex_iterator& __rhs) = default;
2531
2532 /**
2533 * @brief Tests the equivalence of two regex iterators.
2534 */
2535 bool
2536 operator==(const regex_iterator& __rhs) const;
2537
2538 /**
2539 * @brief Tests the inequivalence of two regex iterators.
2540 */
2541 bool
2543 { return !(*this == __rhs); }
2544
2545 /**
2546 * @brief Dereferences a %regex_iterator.
2547 */
2548 const value_type&
2550 { return _M_match; }
2551
2552 /**
2553 * @brief Selects a %regex_iterator member.
2554 */
2555 const value_type*
2557 { return &_M_match; }
2558
2559 /**
2560 * @brief Increments a %regex_iterator.
2561 */
2563 operator++();
2564
2565 /**
2566 * @brief Postincrements a %regex_iterator.
2567 */
2570 {
2571 auto __tmp = *this;
2572 ++(*this);
2573 return __tmp;
2574 }
2575
2576 private:
2577 _Bi_iter _M_begin;
2578 _Bi_iter _M_end;
2579 const regex_type* _M_pregex;
2581 match_results<_Bi_iter> _M_match;
2582 };
2583
2586#ifdef _GLIBCXX_USE_WCHAR_T
2589#endif
2590
2591 // [7.12.2] Class template regex_token_iterator
2592 /**
2593 * Iterates over submatches in a range (or @a splits a text string).
2594 *
2595 * The purpose of this iterator is to enumerate all, or all specified,
2596 * matches of a regular expression within a text range. The dereferenced
2597 * value of an iterator of this class is a std::sub_match object.
2598 */
2599 template<typename _Bi_iter,
2600 typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type,
2603 {
2604 public:
2608 typedef const value_type* pointer;
2609 typedef const value_type& reference;
2611
2612 public:
2613 /**
2614 * @brief Default constructs a %regex_token_iterator.
2615 *
2616 * A default-constructed %regex_token_iterator is a singular iterator
2617 * that will compare equal to the one-past-the-end value for any
2618 * iterator of the same type.
2619 */
2621 : _M_position(), _M_subs(), _M_suffix(), _M_n(0), _M_result(nullptr),
2622 _M_has_m1(false)
2623 { }
2624
2625 /**
2626 * Constructs a %regex_token_iterator...
2627 * @param __a [IN] The start of the text to search.
2628 * @param __b [IN] One-past-the-end of the text to search.
2629 * @param __re [IN] The regular expression to search for.
2630 * @param __submatch [IN] Which submatch to return. There are some
2631 * special values for this parameter:
2632 * - -1 each enumerated subexpression does NOT
2633 * match the regular expression (aka field
2634 * splitting)
2635 * - 0 the entire string matching the
2636 * subexpression is returned for each match
2637 * within the text.
2638 * - >0 enumerates only the indicated
2639 * subexpression from a match within the text.
2640 * @param __m [IN] Policy flags for match rules.
2641 */
2642 regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re,
2643 int __submatch = 0,
2646 : _M_position(__a, __b, __re, __m), _M_subs(1, __submatch), _M_n(0)
2647 { _M_init(__a, __b); }
2648
2649 /**
2650 * Constructs a %regex_token_iterator...
2651 * @param __a [IN] The start of the text to search.
2652 * @param __b [IN] One-past-the-end of the text to search.
2653 * @param __re [IN] The regular expression to search for.
2654 * @param __submatches [IN] A list of subexpressions to return for each
2655 * regular expression match within the text.
2656 * @param __m [IN] Policy flags for match rules.
2657 */
2658 regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
2659 const regex_type& __re,
2663 : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
2664 { _M_init(__a, __b); }
2665
2666 /**
2667 * Constructs a %regex_token_iterator...
2668 * @param __a [IN] The start of the text to search.
2669 * @param __b [IN] One-past-the-end of the text to search.
2670 * @param __re [IN] The regular expression to search for.
2671 * @param __submatches [IN] A list of subexpressions to return for each
2672 * regular expression match within the text.
2673 * @param __m [IN] Policy flags for match rules.
2674 */
2675 regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
2676 const regex_type& __re,
2680 : _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
2681 { _M_init(__a, __b); }
2682
2683 /**
2684 * Constructs a %regex_token_iterator...
2685 * @param __a [IN] The start of the text to search.
2686 * @param __b [IN] One-past-the-end of the text to search.
2687 * @param __re [IN] The regular expression to search for.
2688 * @param __submatches [IN] A list of subexpressions to return for each
2689 * regular expression match within the text.
2690 * @param __m [IN] Policy flags for match rules.
2691 */
2692 template<std::size_t _Nm>
2693 regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
2694 const regex_type& __re,
2695 const int (&__submatches)[_Nm],
2698 : _M_position(__a, __b, __re, __m),
2699 _M_subs(__submatches, __submatches + _Nm), _M_n(0)
2700 { _M_init(__a, __b); }
2701
2702 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2703 // 2332. regex_token_iterator should forbid temporary regexes
2704 regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, int = 0,
2707 regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
2708 const std::vector<int>&,
2711 regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
2715 template <std::size_t _Nm>
2716 regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
2717 const int (&)[_Nm],
2720
2721 /**
2722 * @brief Copy constructs a %regex_token_iterator.
2723 * @param __rhs [IN] A %regex_token_iterator to copy.
2724 */
2726 : _M_position(__rhs._M_position), _M_subs(__rhs._M_subs),
2727 _M_suffix(__rhs._M_suffix), _M_n(__rhs._M_n), _M_has_m1(__rhs._M_has_m1)
2728 { _M_normalize_result(); }
2729
2730 /**
2731 * @brief Assigns a %regex_token_iterator to another.
2732 * @param __rhs [IN] A %regex_token_iterator to copy.
2733 */
2736
2737 /**
2738 * @brief Compares a %regex_token_iterator to another for equality.
2739 */
2740 bool
2742
2743 /**
2744 * @brief Compares a %regex_token_iterator to another for inequality.
2745 */
2746 bool
2748 { return !(*this == __rhs); }
2749
2750 /**
2751 * @brief Dereferences a %regex_token_iterator.
2752 */
2753 const value_type&
2755 { return *_M_result; }
2756
2757 /**
2758 * @brief Selects a %regex_token_iterator member.
2759 */
2760 const value_type*
2762 { return _M_result; }
2763
2764 /**
2765 * @brief Increments a %regex_token_iterator.
2766 */
2768 operator++();
2769
2770 /**
2771 * @brief Postincrements a %regex_token_iterator.
2772 */
2775 {
2776 auto __tmp = *this;
2777 ++(*this);
2778 return __tmp;
2779 }
2780
2781 private:
2783
2784 void
2785 _M_init(_Bi_iter __a, _Bi_iter __b);
2786
2787 const value_type&
2788 _M_current_match() const
2789 {
2790 if (_M_subs[_M_n] == -1)
2791 return (*_M_position).prefix();
2792 else
2793 return (*_M_position)[_M_subs[_M_n]];
2794 }
2795
2796 constexpr bool
2797 _M_end_of_seq() const
2798 { return _M_result == nullptr; }
2799
2800 // [28.12.2.2.4]
2801 void
2802 _M_normalize_result()
2803 {
2804 if (_M_position != _Position())
2805 _M_result = &_M_current_match();
2806 else if (_M_has_m1)
2807 _M_result = &_M_suffix;
2808 else
2809 _M_result = nullptr;
2810 }
2811
2812 _Position _M_position;
2813 std::vector<int> _M_subs;
2814 value_type _M_suffix;
2815 std::size_t _M_n;
2816 const value_type* _M_result;
2817
2818 // Show whether _M_subs contains -1
2819 bool _M_has_m1;
2820 };
2821
2822 /** @brief Token iterator for C-style NULL-terminated strings. */
2824
2825 /** @brief Token iterator for standard strings. */
2827
2828#ifdef _GLIBCXX_USE_WCHAR_T
2829 /** @brief Token iterator for C-style NULL-terminated wide strings. */
2831
2832 /** @brief Token iterator for standard wide-character strings. */
2834#endif
2835
2836 //@} // group regex
2837
2838_GLIBCXX_END_NAMESPACE_CXX11
2839_GLIBCXX_END_NAMESPACE_VERSION
2840} // namespace
2841
2842#include <bits/regex.tcc>
char_type translate(char_type __c) const
Performs the identity translation.
Definition regex.h:188
basic_regex & assign(const _Ch_type *__p, flag_type __flags=ECMAScript)
Assigns a new regular expression to a regex object from a C-style null-terminated string containing a...
Definition regex.h:622
regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type &__re, const int(&__submatches)[_Nm], regex_constants::match_flag_type __m=regex_constants::match_default)
Definition regex.h:2693
bool operator==(const regex_token_iterator &__rhs) const
Compares a regex_token_iterator to another for equality.
Definition regex.tcc:588
sub_match< wstring::const_iterator > wssub_match
Regex submatch over a standard wide string.
Definition regex.h:967
sub_match< string::const_iterator > ssub_match
Standard regex submatch over a standard string.
Definition regex.h:960
basic_regex & operator=(const basic_regex &__rhs)
Assigns one regular expression to another.
Definition regex.h:537
bool operator==(const regex_iterator &__rhs) const
Tests the equivalence of two regex iterators.
Definition regex.tcc:497
bool empty() const
Indicates if the match_results contains no results.
Definition regex.h:1675
friend bool __detail::__regex_algo_impl(_Bp, _Bp, match_results< _Bp, _Ap > &, const basic_regex< _Cp, _Rp > &, regex_constants::match_flag_type)
constexpr syntax_option_type collate
regex_iterator()
Provides a singular iterator, useful for indicating one-past-the-end of a range.
Definition regex.h:2496
difference_type position(size_type __sub=0) const
Gets the offset of the beginning of the indicated submatch.
Definition regex.h:1709
sub_match< const char * > csub_match
Standard regex submatch over a C-style null-terminated string.
Definition regex.h:957
regex_token_iterator< const char * > cregex_token_iterator
Token iterator for C-style NULL-terminated strings.
Definition regex.h:2823
static std::size_t length(const char_type *__p)
Gives the length of a C-style string starting at __p.
Definition regex.h:177
string_type transform_primary(_Fwd_iter __first, _Fwd_iter __last) const
Gets a sort key for a character sequence, independent of case.
Definition regex.h:254
basic_regex & assign(_InputIterator __first, _InputIterator __last, flag_type __flags=ECMAScript)
Assigns a new regular expression to a regex object.
Definition regex.h:677
regex_token_iterator(const regex_token_iterator &__rhs)
Copy constructs a regex_token_iterator.
Definition regex.h:2725
static constexpr flag_type egrep
Definition regex.h:420
size_type size() const
Gets the number of matches and submatches.
Definition regex.h:1662
const_iterator end() const
Gets an iterator to one-past-the-end of the collection.
Definition regex.h:1793
const_iterator begin() const
Gets an iterator to the start of the sub_match collection.
Definition regex.h:1779
regex_iterator< wstring::const_iterator > wsregex_iterator
Token iterator for C-style NULL-terminated strings.
Definition regex.h:2588
constexpr syntax_option_type ECMAScript
regex_token_iterator< wstring::const_iterator > wsregex_token_iterator
Token iterator for standard wide-character strings.
Definition regex.h:2833
locale_type imbue(locale_type __loc)
Imbues the regular expression object with the given locale.
Definition regex.h:724
_Out_iter format(_Out_iter __out, const char_type *__fmt_first, const char_type *__fmt_last, match_flag_type __flags=regex_constants::format_default) const
constexpr syntax_option_type egrep
const_iterator cbegin() const
Gets an iterator to the start of the sub_match collection.
Definition regex.h:1786
difference_type length(size_type __sub=0) const
Gets the length of the indicated submatch.
Definition regex.h:1694
regex_traits()
Constructs a default traits object.
Definition regex.h:164
const_reference prefix() const
Gets a sub_match representing the match prefix.
Definition regex.h:1754
syntax_option_type
This is a bitmask type indicating how to interpret the regex.
basic_regex(const basic_regex &__rhs)=default
Copy-constructs a basic regular expression.
regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type &__re, const std::vector< int > &__submatches, regex_constants::match_flag_type __m=regex_constants::match_default)
Definition regex.h:2658
regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type &__re, initializer_list< int > __submatches, regex_constants::match_flag_type __m=regex_constants::match_default)
Definition regex.h:2675
int value(_Ch_type __ch, int __radix) const
Converts a digit to an int.
Definition regex.tcc:345
regex_token_iterator< const wchar_t * > wcregex_token_iterator
Token iterator for C-style NULL-terminated wide strings.
Definition regex.h:2830
basic_regex & assign(initializer_list< _Ch_type > __l, flag_type __flags=ECMAScript)
Assigns a new regular expression to a regex object.
Definition regex.h:693
regex_iterator operator++(int)
Postincrements a regex_iterator.
Definition regex.h:2569
void swap(basic_regex &__rhs)
Swaps the contents of two regular expression objects.
Definition regex.h:746
basic_string< char_type, _St, _Sa > format(const basic_string< char_type, _St, _Sa > &__fmt, match_flag_type __flags=regex_constants::format_default) const
Definition regex.h:1841
basic_regex & assign(basic_regex &&__rhs) noexcept
The move-assignment operator.
Definition regex.h:601
const_reference operator[](size_type __sub) const
Gets a sub_match reference for the match or submatch.
Definition regex.h:1737
static constexpr flag_type extended
Definition regex.h:417
match_results(const _Alloc &__a=_Alloc())
Constructs a default match_results container.
Definition regex.h:1605
unsigned int mark_count() const
Gets the number of marked subexpressions within the regular expression.
Definition regex.h:702
bool operator!=(const regex_token_iterator &__rhs) const
Compares a regex_token_iterator to another for inequality.
Definition regex.h:2747
regex_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type &__re, regex_constants::match_flag_type __m=regex_constants::match_default)
Definition regex.h:2507
regex_token_iterator operator++(int)
Postincrements a regex_token_iterator.
Definition regex.h:2774
const value_type & operator*() const
Dereferences a regex_iterator.
Definition regex.h:2549
const_iterator cend() const
Gets an iterator to one-past-the-end of the collection.
Definition regex.h:1800
const value_type * operator->() const
Selects a regex_token_iterator member.
Definition regex.h:2761
_Out_iter format(_Out_iter __out, const basic_string< char_type, _St, _Sa > &__fmt, match_flag_type __flags=regex_constants::format_default) const
Definition regex.h:1829
match_results & operator=(const match_results &__rhs)=default
Assigns rhs to *this.
regex_token_iterator & operator=(const regex_token_iterator &__rhs)
Assigns a regex_token_iterator to another.
Definition regex.tcc:572
void swap(match_results &__that)
Swaps the contents of two match_results.
Definition regex.h:1889
constexpr match_flag_type match_default
regex_iterator< string::const_iterator > sregex_iterator
Token iterator for C-style NULL-terminated strings.
Definition regex.h:2585
regex_token_iterator & operator++()
Increments a regex_token_iterator.
Definition regex.tcc:608
static constexpr flag_type awk
Definition regex.h:418
basic_regex & assign(const basic_regex &__rhs)
the real assignment operator.
Definition regex.h:588
static constexpr flag_type ECMAScript
Definition regex.h:415
constexpr syntax_option_type awk
string_type str(size_type __sub=0) const
Gets the match or submatch converted to a string type.
Definition regex.h:1722
regex_iterator< const wchar_t * > wcregex_iterator
Token iterator for C-style NULL-terminated strings.
Definition regex.h:2587
~match_results()
Destroys a match_results object.
Definition regex.h:1634
regex_token_iterator()
Default constructs a regex_token_iterator.
Definition regex.h:2620
basic_regex< char > regex
Standard regular expressions.
Definition regex.h:829
constexpr syntax_option_type extended
basic_regex(const _Ch_type *__p, flag_type __f=ECMAScript)
Constructs a basic regular expression from the sequence [__p, __p + char_traits<_Ch_type>::length(__p...
Definition regex.h:444
_Out_iter regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last, const basic_regex< _Ch_type, _Rx_traits > &__e, const basic_string< _Ch_type, _St, _Sa > &__fmt, regex_constants::match_flag_type __flags=regex_constants::match_default)
Search for a regular expression within a range for multiple times, and replace the matched parts thro...
Definition regex.h:2334
int compare(const value_type *__s) const
Compares this sub_match to a C-style string.
Definition regex.h:951
bool ready() const
Indicates if the match_results is ready.
Definition regex.h:1645
static constexpr flag_type nosubs
Definition regex.h:412
regex_iterator & operator=(const regex_iterator &__rhs)=default
Assigns one regex_iterator to another.
basic_regex(const std::basic_string< _Ch_type, _Ch_traits, _Ch_alloc > &__s, flag_type __f=ECMAScript)
Constructs a basic regular expression from the string s interpreted according to the flags in f.
Definition regex.h:490
constexpr syntax_option_type basic
sub_match< const wchar_t * > wcsub_match
Regex submatch over a C-style null-terminated wide string.
Definition regex.h:964
regex_token_iterator< string::const_iterator > sregex_token_iterator
Token iterator for standard strings.
Definition regex.h:2826
allocator_type get_allocator() const
Gets a copy of the allocator.
Definition regex.h:1875
bool regex_match(_Bi_iter __s, _Bi_iter __e, match_results< _Bi_iter, _Alloc > &__m, const basic_regex< _Ch_type, _Rx_traits > &__re, regex_constants::match_flag_type __flags=regex_constants::match_default)
Determines if there is a match between the regular expression e and all of the character sequence [fi...
Definition regex.h:2028
char_type translate_nocase(char_type __c) const
Translates a character into a case-insensitive equivalent.
Definition regex.h:201
match_flag_type
This is a bitmask type indicating regex matching rules.
const value_type * operator->() const
Selects a regex_iterator member.
Definition regex.h:2556
const_reference suffix() const
Gets a sub_match representing the match suffix.
Definition regex.h:1769
locale_type getloc() const
Gets the locale currently imbued in the regular expression object.
Definition regex.h:736
static constexpr flag_type basic
Definition regex.h:416
static constexpr flag_type grep
Definition regex.h:419
basic_regex(_FwdIter __first, _FwdIter __last, flag_type __f=ECMAScript)
Constructs a basic regular expression from the range [first, last) interpreted according to the flags...
Definition regex.h:510
size_type max_size() const
Gets the number of matches and submatches.
Definition regex.h:1666
match_results & operator=(match_results &&__rhs)=default
Move-assigns rhs to *this.
static constexpr flag_type icase
Definition regex.h:411
constexpr syntax_option_type icase
bool regex_search(_Bi_iter __s, _Bi_iter __e, match_results< _Bi_iter, _Alloc > &__m, const basic_regex< _Ch_type, _Rx_traits > &__re, regex_constants::match_flag_type __flags=regex_constants::match_default)
Definition regex.h:2186
bool operator!=(const regex_iterator &__rhs) const
Tests the inequivalence of two regex iterators.
Definition regex.h:2542
difference_type length() const
Definition regex.h:882
string_type lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const
Gets a collation element by name.
Definition regex.tcc:131
flag_type flags() const
Gets the flags used to construct the regular expression or in the last call to assign().
Definition regex.h:714
basic_regex(const _Ch_type *__p, std::size_t __len, flag_type __f=ECMAScript)
Constructs a basic regular expression from the sequence [p, p + len) interpreted according to the fla...
Definition regex.h:460
basic_regex & operator=(initializer_list< _Ch_type > __l)
Replaces a regular expression with a new one constructed from an initializer list.
Definition regex.h:567
const value_type & operator*() const
Dereferences a regex_token_iterator.
Definition regex.h:2754
regex_iterator< const char * > cregex_iterator
Token iterator for C-style NULL-terminated strings.
Definition regex.h:2584
locale_type getloc() const
Gets a copy of the current locale in use by the regex_traits object.
Definition regex.h:377
constexpr syntax_option_type optimize
string_type format(const char_type *__fmt, match_flag_type __flags=regex_constants::format_default) const
Definition regex.h:1853
string_type str() const
Gets the matching sequence as a string.
Definition regex.h:908
constexpr match_flag_type format_default
regex_iterator(const regex_iterator &__rhs)=default
constexpr syntax_option_type nosubs
match_results(const match_results &__rhs)=default
Copy constructs a match_results.
bool isctype(_Ch_type __c, char_class_type __f) const
Determines if c is a member of an identified class.
Definition regex.tcc:331
basic_regex & assign(const basic_string< _Ch_type, _Ch_traits, _Alloc > &__s, flag_type __flags=ECMAScript)
Assigns a new regular expression to a regex object from a string containing a regular expression patt...
Definition regex.h:655
basic_regex & operator=(basic_regex &&__rhs) noexcept
Move-assigns one regular expression to another.
Definition regex.h:544
basic_regex< wchar_t > wregex
Standard wide-character regular expressions.
Definition regex.h:833
locale_type imbue(locale_type __loc)
Imbues the regex_traits object with a copy of a new locale.
Definition regex.h:366
basic_regex(basic_regex &&__rhs) noexcept=default
Move-constructs a basic regular expression.
basic_regex(initializer_list< _Ch_type > __l, flag_type __f=ECMAScript)
Constructs a basic regular expression from an initializer list.
Definition regex.h:523
basic_regex & operator=(const _Ch_type *__p)
Replaces a regular expression with a new one constructed from a C-style null-terminated string.
Definition regex.h:555
char_class_type lookup_classname(_Fwd_iter __first, _Fwd_iter __last, bool __icase=false) const
Maps one or more characters to a named character classification.
Definition regex.tcc:287
basic_regex & operator=(const basic_string< _Ch_type, _Ch_traits, _Alloc > &__s)
Replaces a regular expression with a new one constructed from a string.
Definition regex.h:578
regex_iterator & operator++()
Increments a regex_iterator.
Definition regex.tcc:513
int compare(const sub_match &__s) const
Compares this and another matched sequence.
Definition regex.h:925
string_type transform(_Fwd_iter __first, _Fwd_iter __last) const
Gets a sort key for a character sequence.
Definition regex.h:230
int compare(const string_type &__s) const
Compares this sub_match to a string.
Definition regex.h:938
regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type &__re, int __submatch=0, regex_constants::match_flag_type __m=regex_constants::match_default)
Definition regex.h:2642
match_results(match_results &&__rhs) noexcept=default
Move constructs a match_results.
~basic_regex()
Destroys a basic regular expression.
Definition regex.h:530
basic_regex & assign(const _Ch_type *__p, std::size_t __len, flag_type __flags)
Assigns a new regular expression to a regex object from a C-style string containing a regular express...
Definition regex.h:639
static constexpr flag_type optimize
Definition regex.h:413
constexpr syntax_option_type grep
back_insert_iterator< _Container > back_inserter(_Container &__x)
ISO C++ entities toplevel namespace is std.
constexpr const _Tp * begin(initializer_list< _Tp > __ils) noexcept
Return an iterator pointing to the first element of the initializer_list.
bitset< _Nb > operator&(const bitset< _Nb > &__x, const bitset< _Nb > &__y) noexcept
Global bitwise operations on bitsets.
Definition bitset:1425
constexpr const _Tp * end(initializer_list< _Tp > __ils) noexcept
Return an iterator pointing to one past the last element of the initializer_list.
iterator_traits< _InputIterator >::difference_type distance(_InputIterator __first, _InputIterator __last)
A generalization of pointer arithmetic.
typename _Size< _Alloc, difference_type >::type size_type
The allocator's size type.
Managing sequences of characters and character-like objects.
int compare(const basic_string &__str) const
Compare to a string.
Basis for explicit traits specializations.
Container class for localization functionality.
Facet for localized string comparison.
The results of a match or search operation.
Definition regex.h:1555
Takes a regex and an input string and does the matching.
Describes aspects of a regular expression.
Definition regex.h:88
Forward iterators support a superset of input iterator operations.
Struct holding two objects of arbitrary type.
Definition stl_pair.h:206
_BiIter first
second_type is the second bound type
Definition stl_pair.h:210
_BiIter second
first is a copy of the first object
Definition stl_pair.h:211
A standard container which offers fixed time access to individual elements in any order.
Definition stl_vector.h:215