1 // class template regex -*- C++ -*-
3 // Copyright (C) 2010-2014 Free Software Foundation, Inc.
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)
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.
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.
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/>.
27 * This is an internal header file, included by other library headers.
28 * Do not attempt to use it directly. @headername{regex}
31 namespace std
_GLIBCXX_VISIBILITY(default)
33 _GLIBCXX_BEGIN_NAMESPACE_VERSION
34 template<typename
, typename
>
37 template<typename
, typename
>
40 _GLIBCXX_END_NAMESPACE_VERSION
44 _GLIBCXX_BEGIN_NAMESPACE_VERSION
46 enum class _RegexExecutorPolicy
: int
47 { _S_auto
, _S_alternate
};
49 template<typename _BiIter
, typename _Alloc
,
50 typename _CharT
, typename _TraitsT
,
51 _RegexExecutorPolicy __policy
,
54 __regex_algo_impl(_BiIter __s
,
56 match_results
<_BiIter
, _Alloc
>& __m
,
57 const basic_regex
<_CharT
, _TraitsT
>& __re
,
58 regex_constants::match_flag_type __flags
);
60 template<typename
, typename
, typename
, bool>
63 template<typename _TraitsT
>
64 inline std::shared_ptr
<_NFA
<_TraitsT
>>
65 __compile_nfa(const typename
_TraitsT::char_type
* __first
,
66 const typename
_TraitsT::char_type
* __last
,
67 const typename
_TraitsT::locale_type
& __loc
,
68 regex_constants::syntax_option_type __flags
);
70 _GLIBCXX_END_NAMESPACE_VERSION
73 _GLIBCXX_BEGIN_NAMESPACE_VERSION
81 * @brief Describes aspects of a regular expression.
83 * A regular expression traits class that satisfies the requirements of
86 * The class %regex is parameterized around a set of related types and
87 * functions used to complete the definition of its semantics. This class
88 * satisfies the requirements of such a traits class.
90 template<typename _Ch_type
>
94 typedef _Ch_type char_type
;
95 typedef std::basic_string
<char_type
> string_type
;
96 typedef std::locale locale_type
;
100 typedef std::ctype_base::mask _BaseType
;
102 unsigned char _M_extended
;
103 static constexpr unsigned char _S_under
= 1 << 0;
104 static constexpr unsigned char _S_valid_mask
= 0x1;
106 constexpr _RegexMask(_BaseType __base
= 0,
107 unsigned char __extended
= 0)
108 : _M_base(__base
), _M_extended(__extended
)
112 operator&(_RegexMask __other
) const
114 return _RegexMask(_M_base
& __other
._M_base
,
115 _M_extended
& __other
._M_extended
);
119 operator|(_RegexMask __other
) const
121 return _RegexMask(_M_base
| __other
._M_base
,
122 _M_extended
| __other
._M_extended
);
126 operator^(_RegexMask __other
) const
128 return _RegexMask(_M_base
^ __other
._M_base
,
129 _M_extended
^ __other
._M_extended
);
134 { return _RegexMask(~_M_base
, ~_M_extended
); }
137 operator&=(_RegexMask __other
)
138 { return *this = (*this) & __other
; }
141 operator|=(_RegexMask __other
)
142 { return *this = (*this) | __other
; }
145 operator^=(_RegexMask __other
)
146 { return *this = (*this) ^ __other
; }
149 operator==(_RegexMask __other
) const
151 return (_M_extended
& _S_valid_mask
)
152 == (__other
._M_extended
& _S_valid_mask
)
153 && _M_base
== __other
._M_base
;
157 operator!=(_RegexMask __other
) const
158 { return !((*this) == __other
); }
162 typedef _RegexMask char_class_type
;
166 * @brief Constructs a default traits object.
171 * @brief Gives the length of a C-style string starting at @p __p.
173 * @param __p a pointer to the start of a character sequence.
175 * @returns the number of characters between @p *__p and the first
176 * default-initialized value of type @p char_type. In other words, uses
177 * the C-string algorithm for determining the length of a sequence of
181 length(const char_type
* __p
)
182 { return string_type::traits_type::length(__p
); }
185 * @brief Performs the identity translation.
187 * @param __c A character to the locale-specific character set.
192 translate(char_type __c
) const
196 * @brief Translates a character into a case-insensitive equivalent.
198 * @param __c A character to the locale-specific character set.
200 * @returns the locale-specific lower-case equivalent of __c.
201 * @throws std::bad_cast if the imbued locale does not support the ctype
205 translate_nocase(char_type __c
) const
207 typedef std::ctype
<char_type
> __ctype_type
;
208 const __ctype_type
& __fctyp(use_facet
<__ctype_type
>(_M_locale
));
209 return __fctyp
.tolower(__c
);
213 * @brief Gets a sort key for a character sequence.
215 * @param __first beginning of the character sequence.
216 * @param __last one-past-the-end of the character sequence.
218 * Returns a sort key for the character sequence designated by the
219 * iterator range [F1, F2) such that if the character sequence [G1, G2)
220 * sorts before the character sequence [H1, H2) then
221 * v.transform(G1, G2) < v.transform(H1, H2).
223 * What this really does is provide a more efficient way to compare a
224 * string to multiple other strings in locales with fancy collation
225 * rules and equivalence classes.
227 * @returns a locale-specific sort key equivalent to the input range.
229 * @throws std::bad_cast if the current locale does not have a collate
232 template<typename _Fwd_iter
>
234 transform(_Fwd_iter __first
, _Fwd_iter __last
) const
236 typedef std::collate
<char_type
> __collate_type
;
237 const __collate_type
& __fclt(use_facet
<__collate_type
>(_M_locale
));
238 string_type
__s(__first
, __last
);
239 return __fclt
.transform(__s
.data(), __s
.data() + __s
.size());
243 * @brief Gets a sort key for a character sequence, independent of case.
245 * @param __first beginning of the character sequence.
246 * @param __last one-past-the-end of the character sequence.
248 * Effects: if typeid(use_facet<collate<_Ch_type> >) ==
249 * typeid(collate_byname<_Ch_type>) and the form of the sort key
250 * returned by collate_byname<_Ch_type>::transform(__first, __last)
251 * is known and can be converted into a primary sort key
252 * then returns that key, otherwise returns an empty string.
254 * @todo Implement this function correctly.
256 template<typename _Fwd_iter
>
258 transform_primary(_Fwd_iter __first
, _Fwd_iter __last
) const
260 // TODO : this is not entirely correct.
261 // This function requires extra support from the platform.
263 // Read http://gcc.gnu.org/ml/libstdc++/2013-09/msg00117.html and
264 // http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2003/n1429.htm
266 typedef std::ctype
<char_type
> __ctype_type
;
267 const __ctype_type
& __fctyp(use_facet
<__ctype_type
>(_M_locale
));
268 std::vector
<char_type
> __s(__first
, __last
);
269 __fctyp
.tolower(__s
.data(), __s
.data() + __s
.size());
270 return this->transform(__s
.data(), __s
.data() + __s
.size());
274 * @brief Gets a collation element by name.
276 * @param __first beginning of the collation element name.
277 * @param __last one-past-the-end of the collation element name.
279 * @returns a sequence of one or more characters that represents the
280 * collating element consisting of the character sequence designated by
281 * the iterator range [__first, __last). Returns an empty string if the
282 * character sequence is not a valid collating element.
284 template<typename _Fwd_iter
>
286 lookup_collatename(_Fwd_iter __first
, _Fwd_iter __last
) const;
289 * @brief Maps one or more characters to a named character
292 * @param __first beginning of the character sequence.
293 * @param __last one-past-the-end of the character sequence.
294 * @param __icase ignores the case of the classification name.
296 * @returns an unspecified value that represents the character
297 * classification named by the character sequence designated by
298 * the iterator range [__first, __last). If @p icase is true,
299 * the returned mask identifies the classification regardless of
300 * the case of the characters to be matched (for example,
301 * [[:lower:]] is the same as [[:alpha:]]), otherwise a
302 * case-dependent classification is returned. The value
303 * returned shall be independent of the case of the characters
304 * in the character sequence. If the name is not recognized then
305 * returns a value that compares equal to 0.
307 * At least the following names (or their wide-character equivalent) are
325 template<typename _Fwd_iter
>
327 lookup_classname(_Fwd_iter __first
, _Fwd_iter __last
,
328 bool __icase
= false) const;
331 * @brief Determines if @p c is a member of an identified class.
333 * @param __c a character.
334 * @param __f a class type (as returned from lookup_classname).
336 * @returns true if the character @p __c is a member of the classification
337 * represented by @p __f, false otherwise.
339 * @throws std::bad_cast if the current locale does not have a ctype
343 isctype(_Ch_type __c
, char_class_type __f
) const;
346 * @brief Converts a digit to an int.
348 * @param __ch a character representing a digit.
349 * @param __radix the radix if the numeric conversion (limited to 8, 10,
352 * @returns the value represented by the digit __ch in base radix if the
353 * character __ch is a valid digit in base radix; otherwise returns -1.
356 value(_Ch_type __ch
, int __radix
) const;
359 * @brief Imbues the regex_traits object with a copy of a new locale.
361 * @param __loc A locale.
363 * @returns a copy of the previous locale in use by the regex_traits
366 * @note Calling imbue with a different locale than the one currently in
367 * use invalidates all cached data held by *this.
370 imbue(locale_type __loc
)
372 std::swap(_M_locale
, __loc
);
377 * @brief Gets a copy of the current locale in use by the regex_traits
382 { return _M_locale
; }
385 locale_type _M_locale
;
388 // [7.8] Class basic_regex
390 * Objects of specializations of this class represent regular expressions
391 * constructed from sequences of character type @p _Ch_type.
393 * Storage for the regular expression is allocated and deallocated as
394 * necessary by the member functions of this class.
396 template<typename _Ch_type
, typename _Rx_traits
= regex_traits
<_Ch_type
>>
400 static_assert(is_same
<_Ch_type
, typename
_Rx_traits::char_type
>::value
,
401 "regex traits class must have the same char_type");
404 typedef _Ch_type value_type
;
405 typedef _Rx_traits traits_type
;
406 typedef typename
traits_type::string_type string_type
;
407 typedef regex_constants::syntax_option_type flag_type
;
408 typedef typename
traits_type::locale_type locale_type
;
415 static constexpr flag_type icase
= regex_constants::icase
;
416 static constexpr flag_type nosubs
= regex_constants::nosubs
;
417 static constexpr flag_type optimize
= regex_constants::optimize
;
418 static constexpr flag_type collate
= regex_constants::collate
;
419 static constexpr flag_type ECMAScript
= regex_constants::ECMAScript
;
420 static constexpr flag_type basic
= regex_constants::basic
;
421 static constexpr flag_type extended
= regex_constants::extended
;
422 static constexpr flag_type awk
= regex_constants::awk
;
423 static constexpr flag_type grep
= regex_constants::grep
;
424 static constexpr flag_type egrep
= regex_constants::egrep
;
427 // [7.8.2] construct/copy/destroy
429 * Constructs a basic regular expression that does not match any
430 * character sequence.
433 : _M_flags(ECMAScript
), _M_loc(), _M_original_str(), _M_automaton(nullptr)
437 * @brief Constructs a basic regular expression from the
438 * sequence [__p, __p + char_traits<_Ch_type>::length(__p))
439 * interpreted according to the flags in @p __f.
441 * @param __p A pointer to the start of a C-style null-terminated string
442 * containing a regular expression.
443 * @param __f Flags indicating the syntax rules and options.
445 * @throws regex_error if @p __p is not a valid regular expression.
448 basic_regex(const _Ch_type
* __p
, flag_type __f
= ECMAScript
)
449 : basic_regex(__p
, __p
+ _Rx_traits::length(__p
), __f
)
453 * @brief Constructs a basic regular expression from the sequence
454 * [p, p + len) interpreted according to the flags in @p f.
456 * @param __p A pointer to the start of a string containing a regular
458 * @param __len The length of the string containing the regular
460 * @param __f Flags indicating the syntax rules and options.
462 * @throws regex_error if @p __p is not a valid regular expression.
464 basic_regex(const _Ch_type
* __p
, std::size_t __len
,
465 flag_type __f
= ECMAScript
)
466 : basic_regex(__p
, __p
+ __len
, __f
)
470 * @brief Copy-constructs a basic regular expression.
472 * @param __rhs A @p regex object.
474 basic_regex(const basic_regex
& __rhs
) = default;
477 * @brief Move-constructs a basic regular expression.
479 * @param __rhs A @p regex object.
481 basic_regex(basic_regex
&& __rhs
) noexcept
= default;
484 * @brief Constructs a basic regular expression from the string
485 * @p s interpreted according to the flags in @p f.
487 * @param __s A string containing a regular expression.
488 * @param __f Flags indicating the syntax rules and options.
490 * @throws regex_error if @p __s is not a valid regular expression.
492 template<typename _Ch_traits
, typename _Ch_alloc
>
494 basic_regex(const std::basic_string
<_Ch_type
, _Ch_traits
,
496 flag_type __f
= ECMAScript
)
497 : basic_regex(__s
.begin(), __s
.end(), __f
)
501 * @brief Constructs a basic regular expression from the range
502 * [first, last) interpreted according to the flags in @p f.
504 * @param __first The start of a range containing a valid regular
506 * @param __last The end of a range containing a valid regular
508 * @param __f The format flags of the regular expression.
510 * @throws regex_error if @p [__first, __last) is not a valid regular
513 template<typename _FwdIter
>
514 basic_regex(_FwdIter __first
, _FwdIter __last
,
515 flag_type __f
= ECMAScript
)
518 _M_original_str(__first
, __last
),
519 _M_automaton(__detail::__compile_nfa
<_Rx_traits
>(
520 _M_original_str
.c_str(),
521 _M_original_str
.c_str() + _M_original_str
.size(),
527 * @brief Constructs a basic regular expression from an initializer list.
529 * @param __l The initializer list.
530 * @param __f The format flags of the regular expression.
532 * @throws regex_error if @p __l is not a valid regular expression.
534 basic_regex(initializer_list
<_Ch_type
> __l
, flag_type __f
= ECMAScript
)
535 : basic_regex(__l
.begin(), __l
.end(), __f
)
539 * @brief Destroys a basic regular expression.
545 * @brief Assigns one regular expression to another.
548 operator=(const basic_regex
& __rhs
)
549 { return this->assign(__rhs
); }
552 * @brief Move-assigns one regular expression to another.
555 operator=(basic_regex
&& __rhs
) noexcept
556 { return this->assign(std::move(__rhs
)); }
559 * @brief Replaces a regular expression with a new one constructed from
560 * a C-style null-terminated string.
562 * @param __p A pointer to the start of a null-terminated C-style string
563 * containing a regular expression.
566 operator=(const _Ch_type
* __p
)
567 { return this->assign(__p
, flags()); }
570 * @brief Replaces a regular expression with a new one constructed from
573 * @param __s A pointer to a string containing a regular expression.
575 template<typename _Ch_traits
, typename _Alloc
>
577 operator=(const basic_string
<_Ch_type
, _Ch_traits
, _Alloc
>& __s
)
578 { return this->assign(__s
, flags()); }
582 * @brief the real assignment operator.
584 * @param __rhs Another regular expression object.
587 assign(const basic_regex
& __rhs
)
589 basic_regex
__tmp(__rhs
);
595 * @brief The move-assignment operator.
597 * @param __rhs Another regular expression object.
600 assign(basic_regex
&& __rhs
) noexcept
602 basic_regex
__tmp(std::move(__rhs
));
608 * @brief Assigns a new regular expression to a regex object from a
609 * C-style null-terminated string containing a regular expression
612 * @param __p A pointer to a C-style null-terminated string containing
613 * a regular expression pattern.
614 * @param __flags Syntax option flags.
616 * @throws regex_error if __p does not contain a valid regular
617 * expression pattern interpreted according to @p __flags. If
618 * regex_error is thrown, *this remains unchanged.
621 assign(const _Ch_type
* __p
, flag_type __flags
= ECMAScript
)
622 { return this->assign(string_type(__p
), __flags
); }
625 * @brief Assigns a new regular expression to a regex object from a
626 * C-style string containing a regular expression pattern.
628 * @param __p A pointer to a C-style string containing a
629 * regular expression pattern.
630 * @param __len The length of the regular expression pattern string.
631 * @param __flags Syntax option flags.
633 * @throws regex_error if p does not contain a valid regular
634 * expression pattern interpreted according to @p __flags. If
635 * regex_error is thrown, *this remains unchanged.
638 assign(const _Ch_type
* __p
, std::size_t __len
, flag_type __flags
)
639 { return this->assign(string_type(__p
, __len
), __flags
); }
642 * @brief Assigns a new regular expression to a regex object from a
643 * string containing a regular expression pattern.
645 * @param __s A string containing a regular expression pattern.
646 * @param __flags Syntax option flags.
648 * @throws regex_error if __s does not contain a valid regular
649 * expression pattern interpreted according to @p __flags. If
650 * regex_error is thrown, *this remains unchanged.
652 template<typename _Ch_traits
, typename _Alloc
>
654 assign(const basic_string
<_Ch_type
, _Ch_traits
, _Alloc
>& __s
,
655 flag_type __flags
= ECMAScript
)
658 _M_original_str
.assign(__s
.begin(), __s
.end());
659 auto __p
= _M_original_str
.c_str();
660 _M_automaton
= __detail::__compile_nfa
<_Rx_traits
>(
662 __p
+ _M_original_str
.size(),
669 * @brief Assigns a new regular expression to a regex object.
671 * @param __first The start of a range containing a valid regular
673 * @param __last The end of a range containing a valid regular
675 * @param __flags Syntax option flags.
677 * @throws regex_error if p does not contain a valid regular
678 * expression pattern interpreted according to @p __flags. If
679 * regex_error is thrown, the object remains unchanged.
681 template<typename _InputIterator
>
683 assign(_InputIterator __first
, _InputIterator __last
,
684 flag_type __flags
= ECMAScript
)
685 { return this->assign(string_type(__first
, __last
), __flags
); }
688 * @brief Assigns a new regular expression to a regex object.
690 * @param __l An initializer list representing a regular expression.
691 * @param __flags Syntax option flags.
693 * @throws regex_error if @p __l does not contain a valid
694 * regular expression pattern interpreted according to @p
695 * __flags. If regex_error is thrown, the object remains
699 assign(initializer_list
<_Ch_type
> __l
, flag_type __flags
= ECMAScript
)
700 { return this->assign(__l
.begin(), __l
.end(), __flags
); }
702 // [7.8.4] const operations
704 * @brief Gets the number of marked subexpressions within the regular
709 { return _M_automaton
->_M_sub_count() - 1; }
712 * @brief Gets the flags used to construct the regular expression
713 * or in the last call to assign().
721 * @brief Imbues the regular expression object with the given locale.
723 * @param __loc A locale.
726 imbue(locale_type __loc
)
728 std::swap(__loc
, _M_loc
);
729 if (_M_automaton
!= nullptr)
730 this->assign(_M_original_str
, _M_flags
);
735 * @brief Gets the locale currently imbued in the regular expression
744 * @brief Swaps the contents of two regular expression objects.
746 * @param __rhs Another regular expression object.
749 swap(basic_regex
& __rhs
)
751 std::swap(_M_flags
, __rhs
._M_flags
);
752 std::swap(_M_loc
, __rhs
._M_loc
);
753 std::swap(_M_original_str
, __rhs
._M_original_str
);
754 std::swap(_M_automaton
, __rhs
._M_automaton
);
757 #ifdef _GLIBCXX_DEBUG
759 _M_dot(std::ostream
& __ostr
)
760 { _M_automaton
->_M_dot(__ostr
); }
764 typedef std::shared_ptr
<__detail::_NFA
<_Rx_traits
>> _AutomatonPtr
;
766 template<typename _Bp
, typename _Ap
, typename _Cp
, typename _Rp
,
767 __detail::_RegexExecutorPolicy
, bool>
769 __detail::__regex_algo_impl(_Bp
, _Bp
, match_results
<_Bp
, _Ap
>&,
770 const basic_regex
<_Cp
, _Rp
>&,
771 regex_constants::match_flag_type
);
773 template<typename
, typename
, typename
, bool>
774 friend class __detail::_Executor
;
778 basic_string
<_Ch_type
> _M_original_str
;
779 _AutomatonPtr _M_automaton
;
782 /** @brief Standard regular expressions. */
783 typedef basic_regex
<char> regex
;
785 #ifdef _GLIBCXX_USE_WCHAR_T
786 /** @brief Standard wide-character regular expressions. */
787 typedef basic_regex
<wchar_t> wregex
;
791 // [7.8.6] basic_regex swap
793 * @brief Swaps the contents of two regular expression objects.
794 * @param __lhs First regular expression.
795 * @param __rhs Second regular expression.
797 template<typename _Ch_type
, typename _Rx_traits
>
799 swap(basic_regex
<_Ch_type
, _Rx_traits
>& __lhs
,
800 basic_regex
<_Ch_type
, _Rx_traits
>& __rhs
)
801 { __lhs
.swap(__rhs
); }
804 // [7.9] Class template sub_match
806 * A sequence of characters matched by a particular marked sub-expression.
808 * An object of this class is essentially a pair of iterators marking a
809 * matched subexpression within a regular expression pattern match. Such
810 * objects can be converted to and compared with std::basic_string objects
811 * of a similar base character type as the pattern matched by the regular
814 * The iterators that make up the pair are the usual half-open interval
815 * referencing the actual original pattern matched.
817 template<typename _BiIter
>
818 class sub_match
: public std::pair
<_BiIter
, _BiIter
>
820 typedef iterator_traits
<_BiIter
> __iter_traits
;
823 typedef typename
__iter_traits::value_type value_type
;
824 typedef typename
__iter_traits::difference_type difference_type
;
825 typedef _BiIter iterator
;
826 typedef std::basic_string
<value_type
> string_type
;
830 constexpr sub_match() : matched() { }
833 * Gets the length of the matching sequence.
837 { return this->matched
? std::distance(this->first
, this->second
) : 0; }
840 * @brief Gets the matching sequence as a string.
842 * @returns the matching sequence as a string.
844 * This is the implicit conversion operator. It is identical to the
845 * str() member function except that it will want to pop up in
846 * unexpected places and cause a great deal of confusion and cursing
849 operator string_type() const
852 ? string_type(this->first
, this->second
)
857 * @brief Gets the matching sequence as a string.
859 * @returns the matching sequence as a string.
865 ? string_type(this->first
, this->second
)
870 * @brief Compares this and another matched sequence.
872 * @param __s Another matched sequence to compare to this one.
874 * @retval <0 this matched sequence will collate before @p __s.
875 * @retval =0 this matched sequence is equivalent to @p __s.
876 * @retval <0 this matched sequence will collate after @p __s.
879 compare(const sub_match
& __s
) const
880 { return this->str().compare(__s
.str()); }
883 * @brief Compares this sub_match to a string.
885 * @param __s A string to compare to this sub_match.
887 * @retval <0 this matched sequence will collate before @p __s.
888 * @retval =0 this matched sequence is equivalent to @p __s.
889 * @retval <0 this matched sequence will collate after @p __s.
892 compare(const string_type
& __s
) const
893 { return this->str().compare(__s
); }
896 * @brief Compares this sub_match to a C-style string.
898 * @param __s A C-style string to compare to this sub_match.
900 * @retval <0 this matched sequence will collate before @p __s.
901 * @retval =0 this matched sequence is equivalent to @p __s.
902 * @retval <0 this matched sequence will collate after @p __s.
905 compare(const value_type
* __s
) const
906 { return this->str().compare(__s
); }
910 /** @brief Standard regex submatch over a C-style null-terminated string. */
911 typedef sub_match
<const char*> csub_match
;
913 /** @brief Standard regex submatch over a standard string. */
914 typedef sub_match
<string::const_iterator
> ssub_match
;
916 #ifdef _GLIBCXX_USE_WCHAR_T
917 /** @brief Regex submatch over a C-style null-terminated wide string. */
918 typedef sub_match
<const wchar_t*> wcsub_match
;
920 /** @brief Regex submatch over a standard wide string. */
921 typedef sub_match
<wstring::const_iterator
> wssub_match
;
924 // [7.9.2] sub_match non-member operators
927 * @brief Tests the equivalence of two regular expression submatches.
928 * @param __lhs First regular expression submatch.
929 * @param __rhs Second regular expression submatch.
930 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
932 template<typename _BiIter
>
934 operator==(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
935 { return __lhs
.compare(__rhs
) == 0; }
938 * @brief Tests the inequivalence of two regular expression submatches.
939 * @param __lhs First regular expression submatch.
940 * @param __rhs Second regular expression submatch.
941 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
943 template<typename _BiIter
>
945 operator!=(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
946 { return __lhs
.compare(__rhs
) != 0; }
949 * @brief Tests the ordering of two regular expression submatches.
950 * @param __lhs First regular expression submatch.
951 * @param __rhs Second regular expression submatch.
952 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
954 template<typename _BiIter
>
956 operator<(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
957 { return __lhs
.compare(__rhs
) < 0; }
960 * @brief Tests the ordering of two regular expression submatches.
961 * @param __lhs First regular expression submatch.
962 * @param __rhs Second regular expression submatch.
963 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
965 template<typename _BiIter
>
967 operator<=(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
968 { return __lhs
.compare(__rhs
) <= 0; }
971 * @brief Tests the ordering of two regular expression submatches.
972 * @param __lhs First regular expression submatch.
973 * @param __rhs Second regular expression submatch.
974 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
976 template<typename _BiIter
>
978 operator>=(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
979 { return __lhs
.compare(__rhs
) >= 0; }
982 * @brief Tests the ordering of two regular expression submatches.
983 * @param __lhs First regular expression submatch.
984 * @param __rhs Second regular expression submatch.
985 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
987 template<typename _BiIter
>
989 operator>(const sub_match
<_BiIter
>& __lhs
, const sub_match
<_BiIter
>& __rhs
)
990 { return __lhs
.compare(__rhs
) > 0; }
992 // Alias for sub_match'd string.
993 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
994 using __sub_match_string
= basic_string
<
995 typename iterator_traits
<_Bi_iter
>::value_type
,
996 _Ch_traits
, _Ch_alloc
>;
999 * @brief Tests the equivalence of a string and a regular expression
1001 * @param __lhs A string.
1002 * @param __rhs A regular expression submatch.
1003 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1005 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1007 operator==(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1008 const sub_match
<_Bi_iter
>& __rhs
)
1009 { return __rhs
.compare(__lhs
.c_str()) == 0; }
1012 * @brief Tests the inequivalence of a string and a regular expression
1014 * @param __lhs A string.
1015 * @param __rhs A regular expression submatch.
1016 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1018 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1020 operator!=(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1021 const sub_match
<_Bi_iter
>& __rhs
)
1022 { return !(__lhs
== __rhs
); }
1025 * @brief Tests the ordering of a string and a regular expression submatch.
1026 * @param __lhs A string.
1027 * @param __rhs A regular expression submatch.
1028 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1030 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1032 operator<(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1033 const sub_match
<_Bi_iter
>& __rhs
)
1034 { return __rhs
.compare(__lhs
.c_str()) > 0; }
1037 * @brief Tests the ordering of a string and a regular expression submatch.
1038 * @param __lhs A string.
1039 * @param __rhs A regular expression submatch.
1040 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1042 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1044 operator>(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1045 const sub_match
<_Bi_iter
>& __rhs
)
1046 { return __rhs
< __lhs
; }
1049 * @brief Tests the ordering of a string and a regular expression submatch.
1050 * @param __lhs A string.
1051 * @param __rhs A regular expression submatch.
1052 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1054 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1056 operator>=(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1057 const sub_match
<_Bi_iter
>& __rhs
)
1058 { return !(__lhs
< __rhs
); }
1061 * @brief Tests the ordering of a string and a regular expression submatch.
1062 * @param __lhs A string.
1063 * @param __rhs A regular expression submatch.
1064 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1066 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1068 operator<=(const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __lhs
,
1069 const sub_match
<_Bi_iter
>& __rhs
)
1070 { return !(__rhs
< __lhs
); }
1073 * @brief Tests the equivalence of a regular expression submatch and a
1075 * @param __lhs A regular expression submatch.
1076 * @param __rhs A string.
1077 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1079 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1081 operator==(const sub_match
<_Bi_iter
>& __lhs
,
1082 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1083 { return __lhs
.compare(__rhs
.c_str()) == 0; }
1086 * @brief Tests the inequivalence of a regular expression submatch and a
1088 * @param __lhs A regular expression submatch.
1089 * @param __rhs A string.
1090 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1092 template<typename _Bi_iter
, typename _Ch_traits
, typename _Ch_alloc
>
1094 operator!=(const sub_match
<_Bi_iter
>& __lhs
,
1095 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1096 { return !(__lhs
== __rhs
); }
1099 * @brief Tests the ordering of a regular expression submatch and a string.
1100 * @param __lhs A regular expression submatch.
1101 * @param __rhs A string.
1102 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1104 template<typename _Bi_iter
, class _Ch_traits
, class _Ch_alloc
>
1106 operator<(const sub_match
<_Bi_iter
>& __lhs
,
1107 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1108 { return __lhs
.compare(__rhs
.c_str()) < 0; }
1111 * @brief Tests the ordering of a regular expression submatch and a string.
1112 * @param __lhs A regular expression submatch.
1113 * @param __rhs A string.
1114 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1116 template<typename _Bi_iter
, class _Ch_traits
, class _Ch_alloc
>
1118 operator>(const sub_match
<_Bi_iter
>& __lhs
,
1119 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1120 { return __rhs
< __lhs
; }
1123 * @brief Tests the ordering of a regular expression submatch and a string.
1124 * @param __lhs A regular expression submatch.
1125 * @param __rhs A string.
1126 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1128 template<typename _Bi_iter
, class _Ch_traits
, class _Ch_alloc
>
1130 operator>=(const sub_match
<_Bi_iter
>& __lhs
,
1131 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1132 { return !(__lhs
< __rhs
); }
1135 * @brief Tests the ordering of a regular expression submatch and a string.
1136 * @param __lhs A regular expression submatch.
1137 * @param __rhs A string.
1138 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1140 template<typename _Bi_iter
, class _Ch_traits
, class _Ch_alloc
>
1142 operator<=(const sub_match
<_Bi_iter
>& __lhs
,
1143 const __sub_match_string
<_Bi_iter
, _Ch_traits
, _Ch_alloc
>& __rhs
)
1144 { return !(__rhs
< __lhs
); }
1147 * @brief Tests the equivalence of a C string and a regular expression
1149 * @param __lhs A C string.
1150 * @param __rhs A regular expression submatch.
1151 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1153 template<typename _Bi_iter
>
1155 operator==(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1156 const sub_match
<_Bi_iter
>& __rhs
)
1157 { return __rhs
.compare(__lhs
) == 0; }
1160 * @brief Tests the inequivalence of an iterator value and a regular
1161 * expression submatch.
1162 * @param __lhs A regular expression submatch.
1163 * @param __rhs A string.
1164 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1166 template<typename _Bi_iter
>
1168 operator!=(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1169 const sub_match
<_Bi_iter
>& __rhs
)
1170 { return !(__lhs
== __rhs
); }
1173 * @brief Tests the ordering of a string and a regular expression submatch.
1174 * @param __lhs A string.
1175 * @param __rhs A regular expression submatch.
1176 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1178 template<typename _Bi_iter
>
1180 operator<(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1181 const sub_match
<_Bi_iter
>& __rhs
)
1182 { return __rhs
.compare(__lhs
) > 0; }
1185 * @brief Tests the ordering of a string and a regular expression submatch.
1186 * @param __lhs A string.
1187 * @param __rhs A regular expression submatch.
1188 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1190 template<typename _Bi_iter
>
1192 operator>(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1193 const sub_match
<_Bi_iter
>& __rhs
)
1194 { return __rhs
< __lhs
; }
1197 * @brief Tests the ordering of a string and a regular expression submatch.
1198 * @param __lhs A string.
1199 * @param __rhs A regular expression submatch.
1200 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1202 template<typename _Bi_iter
>
1204 operator>=(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1205 const sub_match
<_Bi_iter
>& __rhs
)
1206 { return !(__lhs
< __rhs
); }
1209 * @brief Tests the ordering of a string and a regular expression submatch.
1210 * @param __lhs A string.
1211 * @param __rhs A regular expression submatch.
1212 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1214 template<typename _Bi_iter
>
1216 operator<=(typename iterator_traits
<_Bi_iter
>::value_type
const* __lhs
,
1217 const sub_match
<_Bi_iter
>& __rhs
)
1218 { return !(__rhs
< __lhs
); }
1221 * @brief Tests the equivalence of a regular expression submatch and a
1223 * @param __lhs A regular expression submatch.
1224 * @param __rhs A pointer to a string?
1225 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1227 template<typename _Bi_iter
>
1229 operator==(const sub_match
<_Bi_iter
>& __lhs
,
1230 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1231 { return __lhs
.compare(__rhs
) == 0; }
1234 * @brief Tests the inequivalence of a regular expression submatch and a
1236 * @param __lhs A regular expression submatch.
1237 * @param __rhs A pointer to a string.
1238 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1240 template<typename _Bi_iter
>
1242 operator!=(const sub_match
<_Bi_iter
>& __lhs
,
1243 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1244 { return !(__lhs
== __rhs
); }
1247 * @brief Tests the ordering of a regular expression submatch and a string.
1248 * @param __lhs A regular expression submatch.
1249 * @param __rhs A string.
1250 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1252 template<typename _Bi_iter
>
1254 operator<(const sub_match
<_Bi_iter
>& __lhs
,
1255 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1256 { return __lhs
.compare(__rhs
) < 0; }
1259 * @brief Tests the ordering of a regular expression submatch and a string.
1260 * @param __lhs A regular expression submatch.
1261 * @param __rhs A string.
1262 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1264 template<typename _Bi_iter
>
1266 operator>(const sub_match
<_Bi_iter
>& __lhs
,
1267 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1268 { return __rhs
< __lhs
; }
1271 * @brief Tests the ordering of a regular expression submatch and a string.
1272 * @param __lhs A regular expression submatch.
1273 * @param __rhs A string.
1274 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1276 template<typename _Bi_iter
>
1278 operator>=(const sub_match
<_Bi_iter
>& __lhs
,
1279 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1280 { return !(__lhs
< __rhs
); }
1283 * @brief Tests the ordering of a regular expression submatch and a string.
1284 * @param __lhs A regular expression submatch.
1285 * @param __rhs A string.
1286 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1288 template<typename _Bi_iter
>
1290 operator<=(const sub_match
<_Bi_iter
>& __lhs
,
1291 typename iterator_traits
<_Bi_iter
>::value_type
const* __rhs
)
1292 { return !(__rhs
< __lhs
); }
1295 * @brief Tests the equivalence of a string and a regular expression
1297 * @param __lhs A string.
1298 * @param __rhs A regular expression submatch.
1299 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1301 template<typename _Bi_iter
>
1303 operator==(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1304 const sub_match
<_Bi_iter
>& __rhs
)
1306 typedef typename sub_match
<_Bi_iter
>::string_type string_type
;
1307 return __rhs
.compare(string_type(1, __lhs
)) == 0;
1311 * @brief Tests the inequivalence of a string and a regular expression
1313 * @param __lhs A string.
1314 * @param __rhs A regular expression submatch.
1315 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1317 template<typename _Bi_iter
>
1319 operator!=(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1320 const sub_match
<_Bi_iter
>& __rhs
)
1321 { return !(__lhs
== __rhs
); }
1324 * @brief Tests the ordering of a string and a regular expression submatch.
1325 * @param __lhs A string.
1326 * @param __rhs A regular expression submatch.
1327 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1329 template<typename _Bi_iter
>
1331 operator<(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1332 const sub_match
<_Bi_iter
>& __rhs
)
1334 typedef typename sub_match
<_Bi_iter
>::string_type string_type
;
1335 return __rhs
.compare(string_type(1, __lhs
)) > 0;
1339 * @brief Tests the ordering of a string and a regular expression submatch.
1340 * @param __lhs A string.
1341 * @param __rhs A regular expression submatch.
1342 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1344 template<typename _Bi_iter
>
1346 operator>(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1347 const sub_match
<_Bi_iter
>& __rhs
)
1348 { return __rhs
< __lhs
; }
1351 * @brief Tests the ordering of a string and a regular expression submatch.
1352 * @param __lhs A string.
1353 * @param __rhs A regular expression submatch.
1354 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1356 template<typename _Bi_iter
>
1358 operator>=(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1359 const sub_match
<_Bi_iter
>& __rhs
)
1360 { return !(__lhs
< __rhs
); }
1363 * @brief Tests the ordering of a string and a regular expression submatch.
1364 * @param __lhs A string.
1365 * @param __rhs A regular expression submatch.
1366 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1368 template<typename _Bi_iter
>
1370 operator<=(typename iterator_traits
<_Bi_iter
>::value_type
const& __lhs
,
1371 const sub_match
<_Bi_iter
>& __rhs
)
1372 { return !(__rhs
< __lhs
); }
1375 * @brief Tests the equivalence of a regular expression submatch and a
1377 * @param __lhs A regular expression submatch.
1378 * @param __rhs A const string reference.
1379 * @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
1381 template<typename _Bi_iter
>
1383 operator==(const sub_match
<_Bi_iter
>& __lhs
,
1384 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1386 typedef typename sub_match
<_Bi_iter
>::string_type string_type
;
1387 return __lhs
.compare(string_type(1, __rhs
)) == 0;
1391 * @brief Tests the inequivalence of a regular expression submatch and a
1393 * @param __lhs A regular expression submatch.
1394 * @param __rhs A const string reference.
1395 * @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
1397 template<typename _Bi_iter
>
1399 operator!=(const sub_match
<_Bi_iter
>& __lhs
,
1400 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1401 { return !(__lhs
== __rhs
); }
1404 * @brief Tests the ordering of a regular expression submatch and a string.
1405 * @param __lhs A regular expression submatch.
1406 * @param __rhs A const string reference.
1407 * @returns true if @a __lhs precedes @a __rhs, false otherwise.
1409 template<typename _Bi_iter
>
1411 operator<(const sub_match
<_Bi_iter
>& __lhs
,
1412 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1414 typedef typename sub_match
<_Bi_iter
>::string_type string_type
;
1415 return __lhs
.compare(string_type(1, __rhs
)) < 0;
1419 * @brief Tests the ordering of a regular expression submatch and a string.
1420 * @param __lhs A regular expression submatch.
1421 * @param __rhs A const string reference.
1422 * @returns true if @a __lhs succeeds @a __rhs, false otherwise.
1424 template<typename _Bi_iter
>
1426 operator>(const sub_match
<_Bi_iter
>& __lhs
,
1427 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1428 { return __rhs
< __lhs
; }
1431 * @brief Tests the ordering of a regular expression submatch and a string.
1432 * @param __lhs A regular expression submatch.
1433 * @param __rhs A const string reference.
1434 * @returns true if @a __lhs does not precede @a __rhs, false otherwise.
1436 template<typename _Bi_iter
>
1438 operator>=(const sub_match
<_Bi_iter
>& __lhs
,
1439 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1440 { return !(__lhs
< __rhs
); }
1443 * @brief Tests the ordering of a regular expression submatch and a string.
1444 * @param __lhs A regular expression submatch.
1445 * @param __rhs A const string reference.
1446 * @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
1448 template<typename _Bi_iter
>
1450 operator<=(const sub_match
<_Bi_iter
>& __lhs
,
1451 typename iterator_traits
<_Bi_iter
>::value_type
const& __rhs
)
1452 { return !(__rhs
< __lhs
); }
1455 * @brief Inserts a matched string into an output stream.
1457 * @param __os The output stream.
1458 * @param __m A submatch string.
1460 * @returns the output stream with the submatch string inserted.
1462 template<typename _Ch_type
, typename _Ch_traits
, typename _Bi_iter
>
1464 basic_ostream
<_Ch_type
, _Ch_traits
>&
1465 operator<<(basic_ostream
<_Ch_type
, _Ch_traits
>& __os
,
1466 const sub_match
<_Bi_iter
>& __m
)
1467 { return __os
<< __m
.str(); }
1469 // [7.10] Class template match_results
1472 * Special sub_match object representing an unmatched sub-expression.
1474 template<typename _Bi_iter
>
1475 inline const sub_match
<_Bi_iter
>&
1478 static const sub_match
<_Bi_iter
> __unmatched
= sub_match
<_Bi_iter
>();
1483 * @brief The results of a match or search operation.
1485 * A collection of character sequences representing the result of a regular
1486 * expression match. Storage for the collection is allocated and freed as
1487 * necessary by the member functions of class template match_results.
1489 * This class satisfies the Sequence requirements, with the exception that
1490 * only the operations defined for a const-qualified Sequence are supported.
1492 * The sub_match object stored at index 0 represents sub-expression 0, i.e.
1493 * the whole match. In this case the %sub_match member matched is always true.
1494 * The sub_match object stored at index n denotes what matched the marked
1495 * sub-expression n within the matched expression. If the sub-expression n
1496 * participated in a regular expression match then the %sub_match member
1497 * matched evaluates to true, and members first and second denote the range
1498 * of characters [first, second) which formed that match. Otherwise matched
1499 * is false, and members first and second point to the end of the sequence
1500 * that was searched.
1504 template<typename _Bi_iter
,
1505 typename _Alloc
= allocator
<sub_match
<_Bi_iter
> > >
1507 : private std::vector
<sub_match
<_Bi_iter
>, _Alloc
>
1511 * The vector base is empty if this does not represent a successful match.
1512 * Otherwise it contains n+3 elements where n is the number of marked
1515 * [1] 1st marked subexpression
1517 * [n] nth marked subexpression
1521 typedef std::vector
<sub_match
<_Bi_iter
>, _Alloc
> _Base_type
;
1522 typedef std::iterator_traits
<_Bi_iter
> __iter_traits
;
1523 typedef regex_constants::match_flag_type match_flag_type
;
1527 * @name 10.? Public Types
1530 typedef sub_match
<_Bi_iter
> value_type
;
1531 typedef const value_type
& const_reference
;
1532 typedef const_reference reference
;
1533 typedef typename
_Base_type::const_iterator const_iterator
;
1534 typedef const_iterator iterator
;
1535 typedef typename
__iter_traits::difference_type difference_type
;
1536 typedef typename allocator_traits
<_Alloc
>::size_type size_type
;
1537 typedef _Alloc allocator_type
;
1538 typedef typename
__iter_traits::value_type char_type
;
1539 typedef std::basic_string
<char_type
> string_type
;
1544 * @name 28.10.1 Construction, Copying, and Destruction
1549 * @brief Constructs a default %match_results container.
1550 * @post size() returns 0 and str() returns an empty string.
1553 match_results(const _Alloc
& __a
= _Alloc())
1554 : _Base_type(__a
), _M_in_iterator(false)
1558 * @brief Copy constructs a %match_results.
1560 match_results(const match_results
& __rhs
)
1561 : _Base_type(__rhs
), _M_in_iterator(false)
1565 * @brief Move constructs a %match_results.
1567 match_results(match_results
&& __rhs
) noexcept
1568 : _Base_type(std::move(__rhs
)), _M_in_iterator(false)
1572 * @brief Assigns rhs to *this.
1575 operator=(const match_results
& __rhs
)
1577 match_results(__rhs
).swap(*this);
1582 * @brief Move-assigns rhs to *this.
1585 operator=(match_results
&& __rhs
)
1587 match_results(std::move(__rhs
)).swap(*this);
1592 * @brief Destroys a %match_results object.
1601 * @brief Indicates if the %match_results is ready.
1602 * @retval true The object has a fully-established result state.
1603 * @retval false The object is not ready.
1605 bool ready() const { return !_Base_type::empty(); }
1608 * @name 28.10.2 Size
1613 * @brief Gets the number of matches and submatches.
1615 * The number of matches for a given regular expression will be either 0
1616 * if there was no match or mark_count() + 1 if a match was successful.
1617 * Some matches may be empty.
1619 * @returns the number of matches found.
1624 size_type __size
= _Base_type::size();
1625 return (__size
&& _Base_type::operator[](0).matched
) ? __size
- 2 : 0;
1630 { return _Base_type::max_size(); }
1633 * @brief Indicates if the %match_results contains no results.
1634 * @retval true The %match_results object is empty.
1635 * @retval false The %match_results object is not empty.
1639 { return size() == 0; }
1644 * @name 10.3 Element Access
1649 * @brief Gets the length of the indicated submatch.
1650 * @param __sub indicates the submatch.
1651 * @pre ready() == true
1653 * This function returns the length of the indicated submatch, or the
1654 * length of the entire match if @p __sub is zero (the default).
1657 length(size_type __sub
= 0) const
1658 { return (*this)[__sub
].length(); }
1661 * @brief Gets the offset of the beginning of the indicated submatch.
1662 * @param __sub indicates the submatch.
1663 * @pre ready() == true
1665 * This function returns the offset from the beginning of the target
1666 * sequence to the beginning of the submatch, unless the value of @p __sub
1667 * is zero (the default), in which case this function returns the offset
1668 * from the beginning of the target sequence to the beginning of the
1671 * Returns -1 if @p __sub is out of range.
1674 position(size_type __sub
= 0) const
1678 return __sub
< size() ? std::distance(_M_begin
,
1679 (*this)[__sub
].first
) : -1;
1681 return __sub
< size() ? std::distance(this->prefix().first
,
1682 (*this)[__sub
].first
) : -1;
1686 * @brief Gets the match or submatch converted to a string type.
1687 * @param __sub indicates the submatch.
1688 * @pre ready() == true
1690 * This function gets the submatch (or match, if @p __sub is
1691 * zero) extracted from the target range and converted to the
1692 * associated string type.
1695 str(size_type __sub
= 0) const
1696 { return (*this)[__sub
].str(); }
1699 * @brief Gets a %sub_match reference for the match or submatch.
1700 * @param __sub indicates the submatch.
1701 * @pre ready() == true
1703 * This function gets a reference to the indicated submatch, or
1704 * the entire match if @p __sub is zero.
1706 * If @p __sub >= size() then this function returns a %sub_match with a
1707 * special value indicating no submatch.
1710 operator[](size_type __sub
) const
1712 _GLIBCXX_DEBUG_ASSERT( ready() );
1713 return __sub
< size()
1714 ? _Base_type::operator[](__sub
)
1715 : __unmatched_sub
<_Bi_iter
>();
1719 * @brief Gets a %sub_match representing the match prefix.
1720 * @pre ready() == true
1722 * This function gets a reference to a %sub_match object representing the
1723 * part of the target range between the start of the target range and the
1724 * start of the match.
1729 _GLIBCXX_DEBUG_ASSERT( ready() );
1731 ? _Base_type::operator[](_Base_type::size() - 2)
1732 : __unmatched_sub
<_Bi_iter
>();
1736 * @brief Gets a %sub_match representing the match suffix.
1737 * @pre ready() == true
1739 * This function gets a reference to a %sub_match object representing the
1740 * part of the target range between the end of the match and the end of
1746 _GLIBCXX_DEBUG_ASSERT( ready() );
1748 ? _Base_type::operator[](_Base_type::size() - 1)
1749 : __unmatched_sub
<_Bi_iter
>();
1753 * @brief Gets an iterator to the start of the %sub_match collection.
1757 { return _Base_type::begin(); }
1760 * @brief Gets an iterator to the start of the %sub_match collection.
1764 { return _Base_type::cbegin() + 2; }
1767 * @brief Gets an iterator to one-past-the-end of the collection.
1771 { return _Base_type::end() - 2; }
1774 * @brief Gets an iterator to one-past-the-end of the collection.
1778 { return _Base_type::cend(); }
1783 * @name 10.4 Formatting
1785 * These functions perform formatted substitution of the matched
1786 * character sequences into their target. The format specifiers and
1787 * escape sequences accepted by these functions are determined by
1788 * their @p flags parameter as documented above.
1793 * @pre ready() == true
1795 template<typename _Out_iter
>
1797 format(_Out_iter __out
, const char_type
* __fmt_first
,
1798 const char_type
* __fmt_last
,
1799 match_flag_type __flags
= regex_constants::format_default
) const;
1802 * @pre ready() == true
1804 template<typename _Out_iter
, typename _St
, typename _Sa
>
1806 format(_Out_iter __out
, const basic_string
<char_type
, _St
, _Sa
>& __fmt
,
1807 match_flag_type __flags
= regex_constants::format_default
) const
1809 return format(__out
, __fmt
.data(), __fmt
.data() + __fmt
.size(),
1814 * @pre ready() == true
1816 template<typename _St
, typename _Sa
>
1817 basic_string
<char_type
, _St
, _Sa
>
1818 format(const basic_string
<char_type
, _St
, _Sa
>& __fmt
,
1819 match_flag_type __flags
= regex_constants::format_default
) const
1821 basic_string
<char_type
, _St
, _Sa
> __result
;
1822 format(std::back_inserter(__result
), __fmt
, __flags
);
1827 * @pre ready() == true
1830 format(const char_type
* __fmt
,
1831 match_flag_type __flags
= regex_constants::format_default
) const
1833 string_type __result
;
1834 format(std::back_inserter(__result
),
1836 __fmt
+ char_traits
<char_type
>::length(__fmt
),
1844 * @name 10.5 Allocator
1849 * @brief Gets a copy of the allocator.
1852 get_allocator() const
1853 { return _Base_type::get_allocator(); }
1863 * @brief Swaps the contents of two match_results.
1866 swap(match_results
& __that
)
1867 { _Base_type::swap(__that
); }
1871 template<typename
, typename
, typename
, bool>
1872 friend class __detail::_Executor
;
1874 template<typename
, typename
, typename
>
1875 friend class regex_iterator
;
1877 template<typename _Bp
, typename _Ap
, typename _Cp
, typename _Rp
,
1878 __detail::_RegexExecutorPolicy
, bool>
1880 __detail::__regex_algo_impl(_Bp
, _Bp
, match_results
<_Bp
, _Ap
>&,
1881 const basic_regex
<_Cp
, _Rp
>&,
1882 regex_constants::match_flag_type
);
1885 bool _M_in_iterator
;
1888 typedef match_results
<const char*> cmatch
;
1889 typedef match_results
<string::const_iterator
> smatch
;
1890 #ifdef _GLIBCXX_USE_WCHAR_T
1891 typedef match_results
<const wchar_t*> wcmatch
;
1892 typedef match_results
<wstring::const_iterator
> wsmatch
;
1895 // match_results comparisons
1897 * @brief Compares two match_results for equality.
1898 * @returns true if the two objects refer to the same match,
1901 template<typename _Bi_iter
, typename _Alloc
>
1903 operator==(const match_results
<_Bi_iter
, _Alloc
>& __m1
,
1904 const match_results
<_Bi_iter
, _Alloc
>& __m2
)
1906 if (__m1
.ready() != __m2
.ready())
1908 if (!__m1
.ready()) // both are not ready
1910 if (__m1
.empty() != __m2
.empty())
1912 if (__m1
.empty()) // both are empty
1914 return __m1
.prefix() == __m2
.prefix()
1915 && __m1
.size() == __m2
.size()
1916 && std::equal(__m1
.begin(), __m1
.end(), __m2
.begin())
1917 && __m1
.suffix() == __m2
.suffix();
1921 * @brief Compares two match_results for inequality.
1922 * @returns true if the two objects do not refer to the same match,
1925 template<typename _Bi_iter
, class _Alloc
>
1927 operator!=(const match_results
<_Bi_iter
, _Alloc
>& __m1
,
1928 const match_results
<_Bi_iter
, _Alloc
>& __m2
)
1929 { return !(__m1
== __m2
); }
1931 // [7.10.6] match_results swap
1933 * @brief Swaps two match results.
1934 * @param __lhs A match result.
1935 * @param __rhs A match result.
1937 * The contents of the two match_results objects are swapped.
1939 template<typename _Bi_iter
, typename _Alloc
>
1941 swap(match_results
<_Bi_iter
, _Alloc
>& __lhs
,
1942 match_results
<_Bi_iter
, _Alloc
>& __rhs
)
1943 { __lhs
.swap(__rhs
); }
1945 // [7.11.2] Function template regex_match
1947 * @name Matching, Searching, and Replacing
1952 * @brief Determines if there is a match between the regular expression @p e
1953 * and all of the character sequence [first, last).
1955 * @param __s Start of the character sequence to match.
1956 * @param __e One-past-the-end of the character sequence to match.
1957 * @param __m The match results.
1958 * @param __re The regular expression.
1959 * @param __flags Controls how the regular expression is matched.
1961 * @retval true A match exists.
1962 * @retval false Otherwise.
1964 * @throws an exception of type regex_error.
1966 template<typename _Bi_iter
, typename _Alloc
,
1967 typename _Ch_type
, typename _Rx_traits
>
1969 regex_match(_Bi_iter __s
,
1971 match_results
<_Bi_iter
, _Alloc
>& __m
,
1972 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
1973 regex_constants::match_flag_type __flags
1974 = regex_constants::match_default
)
1976 return __detail::__regex_algo_impl
<_Bi_iter
, _Alloc
, _Ch_type
, _Rx_traits
,
1977 __detail::_RegexExecutorPolicy::_S_auto
, true>
1978 (__s
, __e
, __m
, __re
, __flags
);
1982 * @brief Indicates if there is a match between the regular expression @p e
1983 * and all of the character sequence [first, last).
1985 * @param __first Beginning of the character sequence to match.
1986 * @param __last One-past-the-end of the character sequence to match.
1987 * @param __re The regular expression.
1988 * @param __flags Controls how the regular expression is matched.
1990 * @retval true A match exists.
1991 * @retval false Otherwise.
1993 * @throws an exception of type regex_error.
1995 template<typename _Bi_iter
, typename _Ch_type
, typename _Rx_traits
>
1997 regex_match(_Bi_iter __first
, _Bi_iter __last
,
1998 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
1999 regex_constants::match_flag_type __flags
2000 = regex_constants::match_default
)
2002 match_results
<_Bi_iter
> __what
;
2003 return regex_match(__first
, __last
, __what
, __re
, __flags
);
2007 * @brief Determines if there is a match between the regular expression @p e
2008 * and a C-style null-terminated string.
2010 * @param __s The C-style null-terminated string to match.
2011 * @param __m The match results.
2012 * @param __re The regular expression.
2013 * @param __f Controls how the regular expression is matched.
2015 * @retval true A match exists.
2016 * @retval false Otherwise.
2018 * @throws an exception of type regex_error.
2020 template<typename _Ch_type
, typename _Alloc
, typename _Rx_traits
>
2022 regex_match(const _Ch_type
* __s
,
2023 match_results
<const _Ch_type
*, _Alloc
>& __m
,
2024 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2025 regex_constants::match_flag_type __f
2026 = regex_constants::match_default
)
2027 { return regex_match(__s
, __s
+ _Rx_traits::length(__s
), __m
, __re
, __f
); }
2030 * @brief Determines if there is a match between the regular expression @p e
2033 * @param __s The string to match.
2034 * @param __m The match results.
2035 * @param __re The regular expression.
2036 * @param __flags Controls how the regular expression is matched.
2038 * @retval true A match exists.
2039 * @retval false Otherwise.
2041 * @throws an exception of type regex_error.
2043 template<typename _Ch_traits
, typename _Ch_alloc
,
2044 typename _Alloc
, typename _Ch_type
, typename _Rx_traits
>
2046 regex_match(const basic_string
<_Ch_type
, _Ch_traits
, _Ch_alloc
>& __s
,
2047 match_results
<typename basic_string
<_Ch_type
,
2048 _Ch_traits
, _Ch_alloc
>::const_iterator
, _Alloc
>& __m
,
2049 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2050 regex_constants::match_flag_type __flags
2051 = regex_constants::match_default
)
2052 { return regex_match(__s
.begin(), __s
.end(), __m
, __re
, __flags
); }
2055 * @brief Indicates if there is a match between the regular expression @p e
2056 * and a C-style null-terminated string.
2058 * @param __s The C-style null-terminated string to match.
2059 * @param __re The regular expression.
2060 * @param __f Controls how the regular expression is matched.
2062 * @retval true A match exists.
2063 * @retval false Otherwise.
2065 * @throws an exception of type regex_error.
2067 template<typename _Ch_type
, class _Rx_traits
>
2069 regex_match(const _Ch_type
* __s
,
2070 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2071 regex_constants::match_flag_type __f
2072 = regex_constants::match_default
)
2073 { return regex_match(__s
, __s
+ _Rx_traits::length(__s
), __re
, __f
); }
2076 * @brief Indicates if there is a match between the regular expression @p e
2079 * @param __s [IN] The string to match.
2080 * @param __re [IN] The regular expression.
2081 * @param __flags [IN] Controls how the regular expression is matched.
2083 * @retval true A match exists.
2084 * @retval false Otherwise.
2086 * @throws an exception of type regex_error.
2088 template<typename _Ch_traits
, typename _Str_allocator
,
2089 typename _Ch_type
, typename _Rx_traits
>
2091 regex_match(const basic_string
<_Ch_type
, _Ch_traits
, _Str_allocator
>& __s
,
2092 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2093 regex_constants::match_flag_type __flags
2094 = regex_constants::match_default
)
2095 { return regex_match(__s
.begin(), __s
.end(), __re
, __flags
); }
2097 // [7.11.3] Function template regex_search
2099 * Searches for a regular expression within a range.
2100 * @param __s [IN] The start of the string to search.
2101 * @param __e [IN] One-past-the-end of the string to search.
2102 * @param __m [OUT] The match results.
2103 * @param __re [IN] The regular expression to search for.
2104 * @param __flags [IN] Search policy flags.
2105 * @retval true A match was found within the string.
2106 * @retval false No match was found within the string, the content of %m is
2109 * @throws an exception of type regex_error.
2111 template<typename _Bi_iter
, typename _Alloc
,
2112 typename _Ch_type
, typename _Rx_traits
>
2114 regex_search(_Bi_iter __s
, _Bi_iter __e
,
2115 match_results
<_Bi_iter
, _Alloc
>& __m
,
2116 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2117 regex_constants::match_flag_type __flags
2118 = regex_constants::match_default
)
2120 return __detail::__regex_algo_impl
<_Bi_iter
, _Alloc
, _Ch_type
, _Rx_traits
,
2121 __detail::_RegexExecutorPolicy::_S_auto
, false>
2122 (__s
, __e
, __m
, __re
, __flags
);
2126 * Searches for a regular expression within a range.
2127 * @param __first [IN] The start of the string to search.
2128 * @param __last [IN] One-past-the-end of the string to search.
2129 * @param __re [IN] The regular expression to search for.
2130 * @param __flags [IN] Search policy flags.
2131 * @retval true A match was found within the string.
2132 * @retval false No match was found within the string.
2134 * @throws an exception of type regex_error.
2136 template<typename _Bi_iter
, typename _Ch_type
, typename _Rx_traits
>
2138 regex_search(_Bi_iter __first
, _Bi_iter __last
,
2139 const basic_regex
<_Ch_type
, _Rx_traits
>& __re
,
2140 regex_constants::match_flag_type __flags
2141 = regex_constants::match_default
)
2143 match_results
<_Bi_iter
> __what
;
2144 return regex_search(__first
, __last
, __what
, __re
, __flags
);
2148 * @brief Searches for a regular expression within a C-string.
2149 * @param __s [IN] A C-string to search for the regex.
2150 * @param __m [OUT] The set of regex matches.
2151 * @param __e [IN] The regex to search for in @p s.
2152 * @param __f [IN] The search flags.
2153 * @retval true A match was found within the string.
2154 * @retval false No match was found within the string, the content of %m is
2157 * @throws an exception of type regex_error.
2159 template<typename _Ch_type
, class _Alloc
, class _Rx_traits
>
2161 regex_search(const _Ch_type
* __s
,
2162 match_results
<const _Ch_type
*, _Alloc
>& __m
,
2163 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2164 regex_constants::match_flag_type __f
2165 = regex_constants::match_default
)
2166 { return regex_search(__s
, __s
+ _Rx_traits::length(__s
), __m
, __e
, __f
); }
2169 * @brief Searches for a regular expression within a C-string.
2170 * @param __s [IN] The C-string to search.
2171 * @param __e [IN] The regular expression to search for.
2172 * @param __f [IN] Search policy flags.
2173 * @retval true A match was found within the string.
2174 * @retval false No match was found within the string.
2176 * @throws an exception of type regex_error.
2178 template<typename _Ch_type
, typename _Rx_traits
>
2180 regex_search(const _Ch_type
* __s
,
2181 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2182 regex_constants::match_flag_type __f
2183 = regex_constants::match_default
)
2184 { return regex_search(__s
, __s
+ _Rx_traits::length(__s
), __e
, __f
); }
2187 * @brief Searches for a regular expression within a string.
2188 * @param __s [IN] The string to search.
2189 * @param __e [IN] The regular expression to search for.
2190 * @param __flags [IN] Search policy flags.
2191 * @retval true A match was found within the string.
2192 * @retval false No match was found within the string.
2194 * @throws an exception of type regex_error.
2196 template<typename _Ch_traits
, typename _String_allocator
,
2197 typename _Ch_type
, typename _Rx_traits
>
2199 regex_search(const basic_string
<_Ch_type
, _Ch_traits
,
2200 _String_allocator
>& __s
,
2201 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2202 regex_constants::match_flag_type __flags
2203 = regex_constants::match_default
)
2204 { return regex_search(__s
.begin(), __s
.end(), __e
, __flags
); }
2207 * @brief Searches for a regular expression within a string.
2208 * @param __s [IN] A C++ string to search for the regex.
2209 * @param __m [OUT] The set of regex matches.
2210 * @param __e [IN] The regex to search for in @p s.
2211 * @param __f [IN] The search flags.
2212 * @retval true A match was found within the string.
2213 * @retval false No match was found within the string, the content of %m is
2216 * @throws an exception of type regex_error.
2218 template<typename _Ch_traits
, typename _Ch_alloc
,
2219 typename _Alloc
, typename _Ch_type
,
2220 typename _Rx_traits
>
2222 regex_search(const basic_string
<_Ch_type
, _Ch_traits
, _Ch_alloc
>& __s
,
2223 match_results
<typename basic_string
<_Ch_type
,
2224 _Ch_traits
, _Ch_alloc
>::const_iterator
, _Alloc
>& __m
,
2225 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2226 regex_constants::match_flag_type __f
2227 = regex_constants::match_default
)
2228 { return regex_search(__s
.begin(), __s
.end(), __m
, __e
, __f
); }
2230 // std [28.11.4] Function template regex_replace
2232 * @brief Search for a regular expression within a range for multiple times,
2233 and replace the matched parts through filling a format string.
2234 * @param __out [OUT] The output iterator.
2235 * @param __first [IN] The start of the string to search.
2236 * @param __last [IN] One-past-the-end of the string to search.
2237 * @param __e [IN] The regular expression to search for.
2238 * @param __fmt [IN] The format string.
2239 * @param __flags [IN] Search and replace policy flags.
2242 * @throws an exception of type regex_error.
2244 template<typename _Out_iter
, typename _Bi_iter
,
2245 typename _Rx_traits
, typename _Ch_type
,
2246 typename _St
, typename _Sa
>
2248 regex_replace(_Out_iter __out
, _Bi_iter __first
, _Bi_iter __last
,
2249 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2250 const basic_string
<_Ch_type
, _St
, _Sa
>& __fmt
,
2251 regex_constants::match_flag_type __flags
2252 = regex_constants::match_default
)
2254 return regex_replace(__out
, __first
, __last
, __e
, __fmt
.c_str(), __flags
);
2258 * @brief Search for a regular expression within a range for multiple times,
2259 and replace the matched parts through filling a format C-string.
2260 * @param __out [OUT] The output iterator.
2261 * @param __first [IN] The start of the string to search.
2262 * @param __last [IN] One-past-the-end of the string to search.
2263 * @param __e [IN] The regular expression to search for.
2264 * @param __fmt [IN] The format C-string.
2265 * @param __flags [IN] Search and replace policy flags.
2268 * @throws an exception of type regex_error.
2270 template<typename _Out_iter
, typename _Bi_iter
,
2271 typename _Rx_traits
, typename _Ch_type
>
2273 regex_replace(_Out_iter __out
, _Bi_iter __first
, _Bi_iter __last
,
2274 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2275 const _Ch_type
* __fmt
,
2276 regex_constants::match_flag_type __flags
2277 = regex_constants::match_default
);
2280 * @brief Search for a regular expression within a string for multiple times,
2281 and replace the matched parts through filling a format string.
2282 * @param __s [IN] The string to search and replace.
2283 * @param __e [IN] The regular expression to search for.
2284 * @param __fmt [IN] The format string.
2285 * @param __flags [IN] Search and replace policy flags.
2287 * @returns The string after replacing.
2288 * @throws an exception of type regex_error.
2290 template<typename _Rx_traits
, typename _Ch_type
,
2291 typename _St
, typename _Sa
, typename _Fst
, typename _Fsa
>
2292 inline basic_string
<_Ch_type
, _St
, _Sa
>
2293 regex_replace(const basic_string
<_Ch_type
, _St
, _Sa
>& __s
,
2294 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2295 const basic_string
<_Ch_type
, _Fst
, _Fsa
>& __fmt
,
2296 regex_constants::match_flag_type __flags
2297 = regex_constants::match_default
)
2299 basic_string
<_Ch_type
, _St
, _Sa
> __result
;
2300 regex_replace(std::back_inserter(__result
),
2301 __s
.begin(), __s
.end(), __e
, __fmt
, __flags
);
2306 * @brief Search for a regular expression within a string for multiple times,
2307 and replace the matched parts through filling a format C-string.
2308 * @param __s [IN] The string to search and replace.
2309 * @param __e [IN] The regular expression to search for.
2310 * @param __fmt [IN] The format C-string.
2311 * @param __flags [IN] Search and replace policy flags.
2313 * @returns The string after replacing.
2314 * @throws an exception of type regex_error.
2316 template<typename _Rx_traits
, typename _Ch_type
,
2317 typename _St
, typename _Sa
>
2318 inline basic_string
<_Ch_type
, _St
, _Sa
>
2319 regex_replace(const basic_string
<_Ch_type
, _St
, _Sa
>& __s
,
2320 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2321 const _Ch_type
* __fmt
,
2322 regex_constants::match_flag_type __flags
2323 = regex_constants::match_default
)
2325 basic_string
<_Ch_type
, _St
, _Sa
> __result
;
2326 regex_replace(std::back_inserter(__result
),
2327 __s
.begin(), __s
.end(), __e
, __fmt
, __flags
);
2332 * @brief Search for a regular expression within a C-string for multiple
2333 times, and replace the matched parts through filling a format string.
2334 * @param __s [IN] The C-string to search and replace.
2335 * @param __e [IN] The regular expression to search for.
2336 * @param __fmt [IN] The format string.
2337 * @param __flags [IN] Search and replace policy flags.
2339 * @returns The string after replacing.
2340 * @throws an exception of type regex_error.
2342 template<typename _Rx_traits
, typename _Ch_type
,
2343 typename _St
, typename _Sa
>
2344 inline basic_string
<_Ch_type
>
2345 regex_replace(const _Ch_type
* __s
,
2346 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2347 const basic_string
<_Ch_type
, _St
, _Sa
>& __fmt
,
2348 regex_constants::match_flag_type __flags
2349 = regex_constants::match_default
)
2351 basic_string
<_Ch_type
> __result
;
2352 regex_replace(std::back_inserter(__result
), __s
,
2353 __s
+ char_traits
<_Ch_type
>::length(__s
),
2354 __e
, __fmt
, __flags
);
2359 * @brief Search for a regular expression within a C-string for multiple
2360 times, and replace the matched parts through filling a format C-string.
2361 * @param __s [IN] The C-string to search and replace.
2362 * @param __e [IN] The regular expression to search for.
2363 * @param __fmt [IN] The format C-string.
2364 * @param __flags [IN] Search and replace policy flags.
2366 * @returns The string after replacing.
2367 * @throws an exception of type regex_error.
2369 template<typename _Rx_traits
, typename _Ch_type
>
2370 inline basic_string
<_Ch_type
>
2371 regex_replace(const _Ch_type
* __s
,
2372 const basic_regex
<_Ch_type
, _Rx_traits
>& __e
,
2373 const _Ch_type
* __fmt
,
2374 regex_constants::match_flag_type __flags
2375 = regex_constants::match_default
)
2377 basic_string
<_Ch_type
> __result
;
2378 regex_replace(std::back_inserter(__result
), __s
,
2379 __s
+ char_traits
<_Ch_type
>::length(__s
),
2380 __e
, __fmt
, __flags
);
2386 // std [28.12] Class template regex_iterator
2388 * An iterator adaptor that will provide repeated calls of regex_search over
2389 * a range until no more matches remain.
2391 template<typename _Bi_iter
,
2392 typename _Ch_type
= typename iterator_traits
<_Bi_iter
>::value_type
,
2393 typename _Rx_traits
= regex_traits
<_Ch_type
> >
2394 class regex_iterator
2397 typedef basic_regex
<_Ch_type
, _Rx_traits
> regex_type
;
2398 typedef match_results
<_Bi_iter
> value_type
;
2399 typedef std::ptrdiff_t difference_type
;
2400 typedef const value_type
* pointer
;
2401 typedef const value_type
& reference
;
2402 typedef std::forward_iterator_tag iterator_category
;
2405 * @brief Provides a singular iterator, useful for indicating
2406 * one-past-the-end of a range.
2413 * Constructs a %regex_iterator...
2414 * @param __a [IN] The start of a text range to search.
2415 * @param __b [IN] One-past-the-end of the text range to search.
2416 * @param __re [IN] The regular expression to match.
2417 * @param __m [IN] Policy flags for match rules.
2419 regex_iterator(_Bi_iter __a
, _Bi_iter __b
, const regex_type
& __re
,
2420 regex_constants::match_flag_type __m
2421 = regex_constants::match_default
)
2422 : _M_begin(__a
), _M_end(__b
), _M_pregex(&__re
), _M_flags(__m
), _M_match()
2424 if (!regex_search(_M_begin
, _M_end
, _M_match
, *_M_pregex
, _M_flags
))
2425 *this = regex_iterator();
2429 * Copy constructs a %regex_iterator.
2431 regex_iterator(const regex_iterator
& __rhs
) = default;
2434 * @brief Assigns one %regex_iterator to another.
2437 operator=(const regex_iterator
& __rhs
) = default;
2440 * @brief Tests the equivalence of two regex iterators.
2443 operator==(const regex_iterator
& __rhs
) const;
2446 * @brief Tests the inequivalence of two regex iterators.
2449 operator!=(const regex_iterator
& __rhs
) const
2450 { return !(*this == __rhs
); }
2453 * @brief Dereferences a %regex_iterator.
2457 { return _M_match
; }
2460 * @brief Selects a %regex_iterator member.
2464 { return &_M_match
; }
2467 * @brief Increments a %regex_iterator.
2473 * @brief Postincrements a %regex_iterator.
2486 const regex_type
* _M_pregex
;
2487 regex_constants::match_flag_type _M_flags
;
2488 match_results
<_Bi_iter
> _M_match
;
2491 typedef regex_iterator
<const char*> cregex_iterator
;
2492 typedef regex_iterator
<string::const_iterator
> sregex_iterator
;
2493 #ifdef _GLIBCXX_USE_WCHAR_T
2494 typedef regex_iterator
<const wchar_t*> wcregex_iterator
;
2495 typedef regex_iterator
<wstring::const_iterator
> wsregex_iterator
;
2498 // [7.12.2] Class template regex_token_iterator
2500 * Iterates over submatches in a range (or @a splits a text string).
2502 * The purpose of this iterator is to enumerate all, or all specified,
2503 * matches of a regular expression within a text range. The dereferenced
2504 * value of an iterator of this class is a std::sub_match object.
2506 template<typename _Bi_iter
,
2507 typename _Ch_type
= typename iterator_traits
<_Bi_iter
>::value_type
,
2508 typename _Rx_traits
= regex_traits
<_Ch_type
> >
2509 class regex_token_iterator
2512 typedef basic_regex
<_Ch_type
, _Rx_traits
> regex_type
;
2513 typedef sub_match
<_Bi_iter
> value_type
;
2514 typedef std::ptrdiff_t difference_type
;
2515 typedef const value_type
* pointer
;
2516 typedef const value_type
& reference
;
2517 typedef std::forward_iterator_tag iterator_category
;
2521 * @brief Default constructs a %regex_token_iterator.
2523 * A default-constructed %regex_token_iterator is a singular iterator
2524 * that will compare equal to the one-past-the-end value for any
2525 * iterator of the same type.
2527 regex_token_iterator()
2528 : _M_position(), _M_subs(), _M_suffix(), _M_n(0), _M_result(nullptr),
2533 * Constructs a %regex_token_iterator...
2534 * @param __a [IN] The start of the text to search.
2535 * @param __b [IN] One-past-the-end of the text to search.
2536 * @param __re [IN] The regular expression to search for.
2537 * @param __submatch [IN] Which submatch to return. There are some
2538 * special values for this parameter:
2539 * - -1 each enumerated subexpression does NOT
2540 * match the regular expression (aka field
2542 * - 0 the entire string matching the
2543 * subexpression is returned for each match
2545 * - >0 enumerates only the indicated
2546 * subexpression from a match within the text.
2547 * @param __m [IN] Policy flags for match rules.
2549 regex_token_iterator(_Bi_iter __a
, _Bi_iter __b
, const regex_type
& __re
,
2551 regex_constants::match_flag_type __m
2552 = regex_constants::match_default
)
2553 : _M_position(__a
, __b
, __re
, __m
), _M_subs(1, __submatch
), _M_n(0)
2554 { _M_init(__a
, __b
); }
2557 * Constructs a %regex_token_iterator...
2558 * @param __a [IN] The start of the text to search.
2559 * @param __b [IN] One-past-the-end of the text to search.
2560 * @param __re [IN] The regular expression to search for.
2561 * @param __submatches [IN] A list of subexpressions to return for each
2562 * regular expression match within the text.
2563 * @param __m [IN] Policy flags for match rules.
2565 regex_token_iterator(_Bi_iter __a
, _Bi_iter __b
,
2566 const regex_type
& __re
,
2567 const std::vector
<int>& __submatches
,
2568 regex_constants::match_flag_type __m
2569 = regex_constants::match_default
)
2570 : _M_position(__a
, __b
, __re
, __m
), _M_subs(__submatches
), _M_n(0)
2571 { _M_init(__a
, __b
); }
2574 * Constructs a %regex_token_iterator...
2575 * @param __a [IN] The start of the text to search.
2576 * @param __b [IN] One-past-the-end of the text to search.
2577 * @param __re [IN] The regular expression to search for.
2578 * @param __submatches [IN] A list of subexpressions to return for each
2579 * regular expression match within the text.
2580 * @param __m [IN] Policy flags for match rules.
2582 regex_token_iterator(_Bi_iter __a
, _Bi_iter __b
,
2583 const regex_type
& __re
,
2584 initializer_list
<int> __submatches
,
2585 regex_constants::match_flag_type __m
2586 = regex_constants::match_default
)
2587 : _M_position(__a
, __b
, __re
, __m
), _M_subs(__submatches
), _M_n(0)
2588 { _M_init(__a
, __b
); }
2591 * Constructs a %regex_token_iterator...
2592 * @param __a [IN] The start of the text to search.
2593 * @param __b [IN] One-past-the-end of the text to search.
2594 * @param __re [IN] The regular expression to search for.
2595 * @param __submatches [IN] A list of subexpressions to return for each
2596 * regular expression match within the text.
2597 * @param __m [IN] Policy flags for match rules.
2599 template<std::size_t _Nm
>
2600 regex_token_iterator(_Bi_iter __a
, _Bi_iter __b
,
2601 const regex_type
& __re
,
2602 const int (&__submatches
)[_Nm
],
2603 regex_constants::match_flag_type __m
2604 = regex_constants::match_default
)
2605 : _M_position(__a
, __b
, __re
, __m
),
2606 _M_subs(__submatches
, *(&__submatches
+1)), _M_n(0)
2607 { _M_init(__a
, __b
); }
2610 * @brief Copy constructs a %regex_token_iterator.
2611 * @param __rhs [IN] A %regex_token_iterator to copy.
2613 regex_token_iterator(const regex_token_iterator
& __rhs
)
2614 : _M_position(__rhs
._M_position
), _M_subs(__rhs
._M_subs
),
2615 _M_suffix(__rhs
._M_suffix
), _M_n(__rhs
._M_n
), _M_result(__rhs
._M_result
),
2616 _M_has_m1(__rhs
._M_has_m1
)
2618 if (__rhs
._M_result
== &__rhs
._M_suffix
)
2619 _M_result
= &_M_suffix
;
2623 * @brief Assigns a %regex_token_iterator to another.
2624 * @param __rhs [IN] A %regex_token_iterator to copy.
2626 regex_token_iterator
&
2627 operator=(const regex_token_iterator
& __rhs
);
2630 * @brief Compares a %regex_token_iterator to another for equality.
2633 operator==(const regex_token_iterator
& __rhs
) const;
2636 * @brief Compares a %regex_token_iterator to another for inequality.
2639 operator!=(const regex_token_iterator
& __rhs
) const
2640 { return !(*this == __rhs
); }
2643 * @brief Dereferences a %regex_token_iterator.
2647 { return *_M_result
; }
2650 * @brief Selects a %regex_token_iterator member.
2654 { return _M_result
; }
2657 * @brief Increments a %regex_token_iterator.
2659 regex_token_iterator
&
2663 * @brief Postincrements a %regex_token_iterator.
2665 regex_token_iterator
2674 typedef regex_iterator
<_Bi_iter
, _Ch_type
, _Rx_traits
> _Position
;
2677 _M_init(_Bi_iter __a
, _Bi_iter __b
);
2680 _M_current_match() const
2682 if (_M_subs
[_M_n
] == -1)
2683 return (*_M_position
).prefix();
2685 return (*_M_position
)[_M_subs
[_M_n
]];
2689 _M_end_of_seq() const
2690 { return _M_result
== nullptr; }
2692 _Position _M_position
;
2693 std::vector
<int> _M_subs
;
2694 value_type _M_suffix
;
2696 const value_type
* _M_result
;
2698 // Show whether _M_subs contains -1
2702 /** @brief Token iterator for C-style NULL-terminated strings. */
2703 typedef regex_token_iterator
<const char*> cregex_token_iterator
;
2705 /** @brief Token iterator for standard strings. */
2706 typedef regex_token_iterator
<string::const_iterator
> sregex_token_iterator
;
2708 #ifdef _GLIBCXX_USE_WCHAR_T
2709 /** @brief Token iterator for C-style NULL-terminated wide strings. */
2710 typedef regex_token_iterator
<const wchar_t*> wcregex_token_iterator
;
2712 /** @brief Token iterator for standard wide-character strings. */
2713 typedef regex_token_iterator
<wstring::const_iterator
> wsregex_token_iterator
;
2717 _GLIBCXX_END_NAMESPACE_VERSION
2720 #include <bits/regex.tcc>