28 Text processing library [text]

28.6 Regular expressions library [re]

28.6.3 Header <regex> synopsis [re.syn]

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#include <compare> // see [compare.syn] #include <initializer_list> // see [initializer.list.syn] namespace std { // [re.const], regex constants namespace regex_constants { using syntax_option_type = T1; using match_flag_type = T2; using error_type = T3; } // [re.badexp], class regex_error class regex_error; // [re.traits], class template regex_traits template<class charT> struct regex_traits; // [re.regex], class template basic_regex template<class charT, class traits = regex_traits<charT>> class basic_regex; using regex = basic_regex<char>; using wregex = basic_regex<wchar_t>; // [re.regex.swap], basic_regex swap template<class charT, class traits> void swap(basic_regex<charT, traits>& e1, basic_regex<charT, traits>& e2); // [re.submatch], class template sub_match template<class BidirectionalIterator> class sub_match; using csub_match = sub_match<const char*>; using wcsub_match = sub_match<const wchar_t*>; using ssub_match = sub_match<string::const_iterator>; using wssub_match = sub_match<wstring::const_iterator>; // [re.submatch.op], sub_match non-member operators template<class BiIter> bool operator==(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs); template<class BiIter> auto operator<=>(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs); template<class BiIter, class ST, class SA> bool operator==( const sub_match<BiIter>& lhs, const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs); template<class BiIter, class ST, class SA> auto operator<=>( const sub_match<BiIter>& lhs, const basic_string<typename iterator_traits<BiIter>::value_type, ST, SA>& rhs); template<class BiIter> bool operator==(const sub_match<BiIter>& lhs, const typename iterator_traits<BiIter>::value_type* rhs); template<class BiIter> auto operator<=>(const sub_match<BiIter>& lhs, const typename iterator_traits<BiIter>::value_type* rhs); template<class BiIter> bool operator==(const sub_match<BiIter>& lhs, const typename iterator_traits<BiIter>::value_type& rhs); template<class BiIter> auto operator<=>(const sub_match<BiIter>& lhs, const typename iterator_traits<BiIter>::value_type& rhs); template<class charT, class ST, class BiIter> basic_ostream<charT, ST>& operator<<(basic_ostream<charT, ST>& os, const sub_match<BiIter>& m); // [re.results], class template match_results template<class BidirectionalIterator, class Allocator = allocator<sub_match<BidirectionalIterator>>> class match_results; using cmatch = match_results<const char*>; using wcmatch = match_results<const wchar_t*>; using smatch = match_results<string::const_iterator>; using wsmatch = match_results<wstring::const_iterator>; // match_results comparisons template<class BidirectionalIterator, class Allocator> bool operator==(const match_results<BidirectionalIterator, Allocator>& m1, const match_results<BidirectionalIterator, Allocator>& m2); // [re.results.swap], match_results swap template<class BidirectionalIterator, class Allocator> void swap(match_results<BidirectionalIterator, Allocator>& m1, match_results<BidirectionalIterator, Allocator>& m2); // [re.alg.match], function template regex_match template<class BidirectionalIterator, class Allocator, class charT, class traits> bool regex_match(BidirectionalIterator first, BidirectionalIterator last, match_results<BidirectionalIterator, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class BidirectionalIterator, class charT, class traits> bool regex_match(BidirectionalIterator first, BidirectionalIterator last, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class charT, class Allocator, class traits> bool regex_match(const charT* str, match_results<const charT*, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class Allocator, class charT, class traits> bool regex_match(const basic_string<charT, ST, SA>& s, match_results<typename basic_string<charT, ST, SA>::const_iterator, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class Allocator, class charT, class traits> bool regex_match(const basic_string<charT, ST, SA>&&, match_results<typename basic_string<charT, ST, SA>::const_iterator, Allocator>&, const basic_regex<charT, traits>&, regex_constants::match_flag_type = regex_constants::match_default) = delete; template<class charT, class traits> bool regex_match(const charT* str, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class charT, class traits> bool regex_match(const basic_string<charT, ST, SA>& s, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); // [re.alg.search], function template regex_search template<class BidirectionalIterator, class Allocator, class charT, class traits> bool regex_search(BidirectionalIterator first, BidirectionalIterator last, match_results<BidirectionalIterator, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class BidirectionalIterator, class charT, class traits> bool regex_search(BidirectionalIterator first, BidirectionalIterator last, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class charT, class Allocator, class traits> bool regex_search(const charT* str, match_results<const charT*, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class charT, class traits> bool regex_search(const charT* str, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class charT, class traits> bool regex_search(const basic_string<charT, ST, SA>& s, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class Allocator, class charT, class traits> bool regex_search(const basic_string<charT, ST, SA>& s, match_results<typename basic_string<charT, ST, SA>::const_iterator, Allocator>& m, const basic_regex<charT, traits>& e, regex_constants::match_flag_type flags = regex_constants::match_default); template<class ST, class SA, class Allocator, class charT, class traits> bool regex_search(const basic_string<charT, ST, SA>&&, match_results<typename basic_string<charT, ST, SA>::const_iterator, Allocator>&, const basic_regex<charT, traits>&, regex_constants::match_flag_type = regex_constants::match_default) = delete; // [re.alg.replace], function template regex_replace template<class OutputIterator, class BidirectionalIterator, class traits, class charT, class ST, class SA> OutputIterator regex_replace(OutputIterator out, BidirectionalIterator first, BidirectionalIterator last, const basic_regex<charT, traits>& e, const basic_string<charT, ST, SA>& fmt, regex_constants::match_flag_type flags = regex_constants::match_default); template<class OutputIterator, class BidirectionalIterator, class traits, class charT> OutputIterator regex_replace(OutputIterator out, BidirectionalIterator first, BidirectionalIterator last, const basic_regex<charT, traits>& e, const charT* fmt, regex_constants::match_flag_type flags = regex_constants::match_default); template<class traits, class charT, class ST, class SA, class FST, class FSA> basic_string<charT, ST, SA> regex_replace(const basic_string<charT, ST, SA>& s, const basic_regex<charT, traits>& e, const basic_string<charT, FST, FSA>& fmt, regex_constants::match_flag_type flags = regex_constants::match_default); template<class traits, class charT, class ST, class SA> basic_string<charT, ST, SA> regex_replace(const basic_string<charT, ST, SA>& s, const basic_regex<charT, traits>& e, const charT* fmt, regex_constants::match_flag_type flags = regex_constants::match_default); template<class traits, class charT, class ST, class SA> basic_string<charT> regex_replace(const charT* s, const basic_regex<charT, traits>& e, const basic_string<charT, ST, SA>& fmt, regex_constants::match_flag_type flags = regex_constants::match_default); template<class traits, class charT> basic_string<charT> regex_replace(const charT* s, const basic_regex<charT, traits>& e, const charT* fmt, regex_constants::match_flag_type flags = regex_constants::match_default); // [re.regiter], class template regex_iterator template<class BidirectionalIterator, class charT = typename iterator_traits<BidirectionalIterator>::value_type, class traits = regex_traits<charT>> class regex_iterator; using cregex_iterator = regex_iterator<const char*>; using wcregex_iterator = regex_iterator<const wchar_t*>; using sregex_iterator = regex_iterator<string::const_iterator>; using wsregex_iterator = regex_iterator<wstring::const_iterator>; // [re.tokiter], class template regex_token_iterator template<class BidirectionalIterator, class charT = typename iterator_traits<BidirectionalIterator>::value_type, class traits = regex_traits<charT>> class regex_token_iterator; using cregex_token_iterator = regex_token_iterator<const char*>; using wcregex_token_iterator = regex_token_iterator<const wchar_t*>; using sregex_token_iterator = regex_token_iterator<string::const_iterator>; using wsregex_token_iterator = regex_token_iterator<wstring::const_iterator>; namespace pmr { template<class BidirectionalIterator> using match_results = std::match_results<BidirectionalIterator, polymorphic_allocator<sub_match<BidirectionalIterator>>>; using cmatch = match_results<const char*>; using wcmatch = match_results<const wchar_t*>; using smatch = match_results<string::const_iterator>; using wsmatch = match_results<wstring::const_iterator>; } }