875d6cb3b4
Some more C++20 changes from P1614R2, "The Mothership has Landed". This adds three-way comparison support to std::char_traits, std::basic_string, std::basic_string_view, and std::sub_match. * include/bits/basic_string.h (basic_string): Define operator<=> and remove redundant comparison operators for C++20. * include/bits/char_traits.h (__gnu_cxx::char_traits, char_traits): Add comparison_category members. (__detail::__char_traits_cmp_cat): New helper to get comparison category from char traits class. * include/bits/regex.h (regex_traits::_RegexMask::operator!=): Do not define for C++20. (sub_match): Define operator<=> and remove redundant comparison operators for C++20. (match_results): Remove redundant operator!= for C++20. * include/std/string_view (basic_string_view): Define operator<=> and remove redundant comparison operators for C++20. * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string_view/operations/copy/char/ constexpr.cc: Initialize variable. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/ constexpr.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/2.cc: Add dg-do directive and remove comments showing incorrect signatures. * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc: New test. * testsuite/28_regex/sub_match/compare_c++20.cc: New test.
2983 lines
100 KiB
C++
2983 lines
100 KiB
C++
// class template regex -*- C++ -*-
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// Copyright (C) 2010-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/**
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* @file bits/regex.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{regex}
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*/
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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template<typename, typename>
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class basic_regex;
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template<typename, typename>
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class match_results;
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_GLIBCXX_END_NAMESPACE_CXX11
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namespace __detail
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{
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enum class _RegexExecutorPolicy : int { _S_auto, _S_alternate };
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template<typename _BiIter, typename _Alloc,
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typename _CharT, typename _TraitsT,
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_RegexExecutorPolicy __policy,
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bool __match_mode>
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bool
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__regex_algo_impl(_BiIter __s,
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_BiIter __e,
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match_results<_BiIter, _Alloc>& __m,
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const basic_regex<_CharT, _TraitsT>& __re,
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regex_constants::match_flag_type __flags);
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template<typename, typename, typename, bool>
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class _Executor;
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}
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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/**
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* @addtogroup regex
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* @{
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*/
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/**
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* @brief Describes aspects of a regular expression.
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*
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* A regular expression traits class that satisfies the requirements of
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* section [28.7].
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*
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* The class %regex is parameterized around a set of related types and
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* functions used to complete the definition of its semantics. This class
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* satisfies the requirements of such a traits class.
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*/
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template<typename _Ch_type>
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struct regex_traits
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{
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public:
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typedef _Ch_type char_type;
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typedef std::basic_string<char_type> string_type;
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typedef std::locale locale_type;
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private:
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struct _RegexMask
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{
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typedef std::ctype_base::mask _BaseType;
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_BaseType _M_base;
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unsigned char _M_extended;
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static constexpr unsigned char _S_under = 1 << 0;
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static constexpr unsigned char _S_valid_mask = 0x1;
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constexpr _RegexMask(_BaseType __base = 0,
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unsigned char __extended = 0)
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: _M_base(__base), _M_extended(__extended)
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{ }
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constexpr _RegexMask
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operator&(_RegexMask __other) const
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{
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return _RegexMask(_M_base & __other._M_base,
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_M_extended & __other._M_extended);
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}
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constexpr _RegexMask
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operator|(_RegexMask __other) const
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{
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return _RegexMask(_M_base | __other._M_base,
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_M_extended | __other._M_extended);
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}
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constexpr _RegexMask
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operator^(_RegexMask __other) const
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{
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return _RegexMask(_M_base ^ __other._M_base,
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_M_extended ^ __other._M_extended);
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}
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constexpr _RegexMask
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operator~() const
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{ return _RegexMask(~_M_base, ~_M_extended); }
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_RegexMask&
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operator&=(_RegexMask __other)
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{ return *this = (*this) & __other; }
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_RegexMask&
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operator|=(_RegexMask __other)
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{ return *this = (*this) | __other; }
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_RegexMask&
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operator^=(_RegexMask __other)
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{ return *this = (*this) ^ __other; }
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constexpr bool
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operator==(_RegexMask __other) const
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{
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return (_M_extended & _S_valid_mask)
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== (__other._M_extended & _S_valid_mask)
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&& _M_base == __other._M_base;
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}
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#if __cpp_impl_three_way_comparison < 201907L
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constexpr bool
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operator!=(_RegexMask __other) const
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{ return !((*this) == __other); }
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#endif
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};
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public:
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typedef _RegexMask char_class_type;
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public:
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/**
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* @brief Constructs a default traits object.
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*/
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regex_traits() { }
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/**
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* @brief Gives the length of a C-style string starting at @p __p.
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*
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* @param __p a pointer to the start of a character sequence.
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*
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* @returns the number of characters between @p *__p and the first
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* default-initialized value of type @p char_type. In other words, uses
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* the C-string algorithm for determining the length of a sequence of
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* characters.
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*/
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static std::size_t
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length(const char_type* __p)
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{ return string_type::traits_type::length(__p); }
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/**
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* @brief Performs the identity translation.
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*
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* @param __c A character to the locale-specific character set.
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*
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* @returns __c.
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*/
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char_type
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translate(char_type __c) const
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{ return __c; }
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/**
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* @brief Translates a character into a case-insensitive equivalent.
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*
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* @param __c A character to the locale-specific character set.
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*
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* @returns the locale-specific lower-case equivalent of __c.
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* @throws std::bad_cast if the imbued locale does not support the ctype
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* facet.
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*/
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char_type
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translate_nocase(char_type __c) const
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{
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typedef std::ctype<char_type> __ctype_type;
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const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale));
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return __fctyp.tolower(__c);
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}
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/**
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* @brief Gets a sort key for a character sequence.
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*
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* @param __first beginning of the character sequence.
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* @param __last one-past-the-end of the character sequence.
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*
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* Returns a sort key for the character sequence designated by the
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* iterator range [F1, F2) such that if the character sequence [G1, G2)
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* sorts before the character sequence [H1, H2) then
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* v.transform(G1, G2) < v.transform(H1, H2).
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*
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* What this really does is provide a more efficient way to compare a
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* string to multiple other strings in locales with fancy collation
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* rules and equivalence classes.
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*
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* @returns a locale-specific sort key equivalent to the input range.
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*
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* @throws std::bad_cast if the current locale does not have a collate
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* facet.
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*/
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template<typename _Fwd_iter>
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string_type
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transform(_Fwd_iter __first, _Fwd_iter __last) const
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{
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typedef std::collate<char_type> __collate_type;
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const __collate_type& __fclt(use_facet<__collate_type>(_M_locale));
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string_type __s(__first, __last);
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return __fclt.transform(__s.data(), __s.data() + __s.size());
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}
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/**
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* @brief Gets a sort key for a character sequence, independent of case.
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*
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* @param __first beginning of the character sequence.
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* @param __last one-past-the-end of the character sequence.
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*
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* Effects: if typeid(use_facet<collate<_Ch_type> >) ==
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* typeid(collate_byname<_Ch_type>) and the form of the sort key
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* returned by collate_byname<_Ch_type>::transform(__first, __last)
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* is known and can be converted into a primary sort key
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* then returns that key, otherwise returns an empty string.
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*
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* @todo Implement this function correctly.
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*/
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template<typename _Fwd_iter>
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string_type
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transform_primary(_Fwd_iter __first, _Fwd_iter __last) const
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{
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// TODO : this is not entirely correct.
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// This function requires extra support from the platform.
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//
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// Read http://gcc.gnu.org/ml/libstdc++/2013-09/msg00117.html and
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// http://www.open-std.org/Jtc1/sc22/wg21/docs/papers/2003/n1429.htm
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// for details.
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typedef std::ctype<char_type> __ctype_type;
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const __ctype_type& __fctyp(use_facet<__ctype_type>(_M_locale));
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std::vector<char_type> __s(__first, __last);
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__fctyp.tolower(__s.data(), __s.data() + __s.size());
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return this->transform(__s.data(), __s.data() + __s.size());
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}
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/**
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* @brief Gets a collation element by name.
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*
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* @param __first beginning of the collation element name.
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* @param __last one-past-the-end of the collation element name.
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*
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* @returns a sequence of one or more characters that represents the
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* collating element consisting of the character sequence designated by
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* the iterator range [__first, __last). Returns an empty string if the
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* character sequence is not a valid collating element.
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*/
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template<typename _Fwd_iter>
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string_type
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lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const;
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/**
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* @brief Maps one or more characters to a named character
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* classification.
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*
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* @param __first beginning of the character sequence.
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* @param __last one-past-the-end of the character sequence.
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* @param __icase ignores the case of the classification name.
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*
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* @returns an unspecified value that represents the character
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* classification named by the character sequence designated by
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* the iterator range [__first, __last). If @p icase is true,
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* the returned mask identifies the classification regardless of
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* the case of the characters to be matched (for example,
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* [[:lower:]] is the same as [[:alpha:]]), otherwise a
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* case-dependent classification is returned. The value
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* returned shall be independent of the case of the characters
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* in the character sequence. If the name is not recognized then
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* returns a value that compares equal to 0.
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*
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* At least the following names (or their wide-character equivalent) are
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* supported.
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* - d
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* - w
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* - s
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* - alnum
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* - alpha
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* - blank
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* - cntrl
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* - digit
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* - graph
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* - lower
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* - print
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* - punct
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* - space
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* - upper
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* - xdigit
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*/
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template<typename _Fwd_iter>
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char_class_type
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lookup_classname(_Fwd_iter __first, _Fwd_iter __last,
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bool __icase = false) const;
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/**
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* @brief Determines if @p c is a member of an identified class.
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*
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* @param __c a character.
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* @param __f a class type (as returned from lookup_classname).
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*
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* @returns true if the character @p __c is a member of the classification
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* represented by @p __f, false otherwise.
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*
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* @throws std::bad_cast if the current locale does not have a ctype
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* facet.
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*/
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bool
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isctype(_Ch_type __c, char_class_type __f) const;
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/**
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* @brief Converts a digit to an int.
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*
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* @param __ch a character representing a digit.
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* @param __radix the radix if the numeric conversion (limited to 8, 10,
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* or 16).
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*
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* @returns the value represented by the digit __ch in base radix if the
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* character __ch is a valid digit in base radix; otherwise returns -1.
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*/
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int
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value(_Ch_type __ch, int __radix) const;
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/**
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* @brief Imbues the regex_traits object with a copy of a new locale.
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*
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* @param __loc A locale.
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*
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* @returns a copy of the previous locale in use by the regex_traits
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* object.
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*
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* @note Calling imbue with a different locale than the one currently in
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* use invalidates all cached data held by *this.
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*/
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locale_type
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imbue(locale_type __loc)
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{
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std::swap(_M_locale, __loc);
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return __loc;
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}
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/**
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* @brief Gets a copy of the current locale in use by the regex_traits
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* object.
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*/
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locale_type
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getloc() const
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{ return _M_locale; }
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protected:
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locale_type _M_locale;
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};
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// [7.8] Class basic_regex
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/**
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* Objects of specializations of this class represent regular expressions
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* constructed from sequences of character type @p _Ch_type.
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*
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* Storage for the regular expression is allocated and deallocated as
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* necessary by the member functions of this class.
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*/
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template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>>
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class basic_regex
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{
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public:
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static_assert(is_same<_Ch_type, typename _Rx_traits::char_type>::value,
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"regex traits class must have the same char_type");
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// types:
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typedef _Ch_type value_type;
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typedef _Rx_traits traits_type;
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typedef typename traits_type::string_type string_type;
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typedef regex_constants::syntax_option_type flag_type;
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typedef typename traits_type::locale_type locale_type;
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/**
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* @name Constants
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* std [28.8.1](1)
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*/
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//@{
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static constexpr flag_type icase = regex_constants::icase;
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static constexpr flag_type nosubs = regex_constants::nosubs;
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static constexpr flag_type optimize = regex_constants::optimize;
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static constexpr flag_type collate = regex_constants::collate;
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static constexpr flag_type ECMAScript = regex_constants::ECMAScript;
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static constexpr flag_type basic = regex_constants::basic;
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static constexpr flag_type extended = regex_constants::extended;
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static constexpr flag_type awk = regex_constants::awk;
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static constexpr flag_type grep = regex_constants::grep;
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static constexpr flag_type egrep = regex_constants::egrep;
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//@}
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// [7.8.2] construct/copy/destroy
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/**
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* Constructs a basic regular expression that does not match any
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* character sequence.
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*/
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basic_regex()
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: _M_flags(ECMAScript), _M_loc(), _M_automaton(nullptr)
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{ }
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/**
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* @brief Constructs a basic regular expression from the
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* sequence [__p, __p + char_traits<_Ch_type>::length(__p))
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* interpreted according to the flags in @p __f.
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*
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* @param __p A pointer to the start of a C-style null-terminated string
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* containing a regular expression.
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* @param __f Flags indicating the syntax rules and options.
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*
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* @throws regex_error if @p __p is not a valid regular expression.
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*/
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explicit
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basic_regex(const _Ch_type* __p, flag_type __f = ECMAScript)
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: basic_regex(__p, __p + char_traits<_Ch_type>::length(__p), __f)
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{ }
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/**
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* @brief Constructs a basic regular expression from the sequence
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* [p, p + len) interpreted according to the flags in @p f.
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*
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* @param __p A pointer to the start of a string containing a regular
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* expression.
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* @param __len The length of the string containing the regular
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* expression.
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* @param __f Flags indicating the syntax rules and options.
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*
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* @throws regex_error if @p __p is not a valid regular expression.
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*/
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basic_regex(const _Ch_type* __p, std::size_t __len,
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flag_type __f = ECMAScript)
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: basic_regex(__p, __p + __len, __f)
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{ }
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/**
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* @brief Copy-constructs a basic regular expression.
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*
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* @param __rhs A @p regex object.
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*/
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basic_regex(const basic_regex& __rhs) = default;
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|
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/**
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* @brief Move-constructs a basic regular expression.
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*
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* @param __rhs A @p regex object.
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*/
|
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basic_regex(basic_regex&& __rhs) noexcept = default;
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|
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/**
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* @brief Constructs a basic regular expression from the string
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* @p s interpreted according to the flags in @p f.
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*
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* @param __s A string containing a regular expression.
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* @param __f Flags indicating the syntax rules and options.
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*
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* @throws regex_error if @p __s is not a valid regular expression.
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*/
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template<typename _Ch_traits, typename _Ch_alloc>
|
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explicit
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basic_regex(const std::basic_string<_Ch_type, _Ch_traits,
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_Ch_alloc>& __s,
|
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flag_type __f = ECMAScript)
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: basic_regex(__s.data(), __s.data() + __s.size(), __f)
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{ }
|
|
|
|
/**
|
|
* @brief Constructs a basic regular expression from the range
|
|
* [first, last) interpreted according to the flags in @p f.
|
|
*
|
|
* @param __first The start of a range containing a valid regular
|
|
* expression.
|
|
* @param __last The end of a range containing a valid regular
|
|
* expression.
|
|
* @param __f The format flags of the regular expression.
|
|
*
|
|
* @throws regex_error if @p [__first, __last) is not a valid regular
|
|
* expression.
|
|
*/
|
|
template<typename _FwdIter>
|
|
basic_regex(_FwdIter __first, _FwdIter __last,
|
|
flag_type __f = ECMAScript)
|
|
: basic_regex(std::move(__first), std::move(__last), locale_type(), __f)
|
|
{ }
|
|
|
|
/**
|
|
* @brief Constructs a basic regular expression from an initializer list.
|
|
*
|
|
* @param __l The initializer list.
|
|
* @param __f The format flags of the regular expression.
|
|
*
|
|
* @throws regex_error if @p __l is not a valid regular expression.
|
|
*/
|
|
basic_regex(initializer_list<_Ch_type> __l, flag_type __f = ECMAScript)
|
|
: basic_regex(__l.begin(), __l.end(), __f)
|
|
{ }
|
|
|
|
/**
|
|
* @brief Destroys a basic regular expression.
|
|
*/
|
|
~basic_regex()
|
|
{ }
|
|
|
|
/**
|
|
* @brief Assigns one regular expression to another.
|
|
*/
|
|
basic_regex&
|
|
operator=(const basic_regex& __rhs)
|
|
{ return this->assign(__rhs); }
|
|
|
|
/**
|
|
* @brief Move-assigns one regular expression to another.
|
|
*/
|
|
basic_regex&
|
|
operator=(basic_regex&& __rhs) noexcept
|
|
{ return this->assign(std::move(__rhs)); }
|
|
|
|
/**
|
|
* @brief Replaces a regular expression with a new one constructed from
|
|
* a C-style null-terminated string.
|
|
*
|
|
* @param __p A pointer to the start of a null-terminated C-style string
|
|
* containing a regular expression.
|
|
*/
|
|
basic_regex&
|
|
operator=(const _Ch_type* __p)
|
|
{ return this->assign(__p); }
|
|
|
|
/**
|
|
* @brief Replaces a regular expression with a new one constructed from
|
|
* an initializer list.
|
|
*
|
|
* @param __l The initializer list.
|
|
*
|
|
* @throws regex_error if @p __l is not a valid regular expression.
|
|
*/
|
|
basic_regex&
|
|
operator=(initializer_list<_Ch_type> __l)
|
|
{ return this->assign(__l.begin(), __l.end()); }
|
|
|
|
/**
|
|
* @brief Replaces a regular expression with a new one constructed from
|
|
* a string.
|
|
*
|
|
* @param __s A pointer to a string containing a regular expression.
|
|
*/
|
|
template<typename _Ch_traits, typename _Alloc>
|
|
basic_regex&
|
|
operator=(const basic_string<_Ch_type, _Ch_traits, _Alloc>& __s)
|
|
{ return this->assign(__s); }
|
|
|
|
// [7.8.3] assign
|
|
/**
|
|
* @brief the real assignment operator.
|
|
*
|
|
* @param __rhs Another regular expression object.
|
|
*/
|
|
basic_regex&
|
|
assign(const basic_regex& __rhs)
|
|
{
|
|
basic_regex __tmp(__rhs);
|
|
this->swap(__tmp);
|
|
return *this;
|
|
}
|
|
|
|
/**
|
|
* @brief The move-assignment operator.
|
|
*
|
|
* @param __rhs Another regular expression object.
|
|
*/
|
|
basic_regex&
|
|
assign(basic_regex&& __rhs) noexcept
|
|
{
|
|
basic_regex __tmp(std::move(__rhs));
|
|
this->swap(__tmp);
|
|
return *this;
|
|
}
|
|
|
|
/**
|
|
* @brief Assigns a new regular expression to a regex object from a
|
|
* C-style null-terminated string containing a regular expression
|
|
* pattern.
|
|
*
|
|
* @param __p A pointer to a C-style null-terminated string containing
|
|
* a regular expression pattern.
|
|
* @param __flags Syntax option flags.
|
|
*
|
|
* @throws regex_error if __p does not contain a valid regular
|
|
* expression pattern interpreted according to @p __flags. If
|
|
* regex_error is thrown, *this remains unchanged.
|
|
*/
|
|
basic_regex&
|
|
assign(const _Ch_type* __p, flag_type __flags = ECMAScript)
|
|
{ return this->assign(string_type(__p), __flags); }
|
|
|
|
/**
|
|
* @brief Assigns a new regular expression to a regex object from a
|
|
* C-style string containing a regular expression pattern.
|
|
*
|
|
* @param __p A pointer to a C-style string containing a
|
|
* regular expression pattern.
|
|
* @param __len The length of the regular expression pattern string.
|
|
* @param __flags Syntax option flags.
|
|
*
|
|
* @throws regex_error if p does not contain a valid regular
|
|
* expression pattern interpreted according to @p __flags. If
|
|
* regex_error is thrown, *this remains unchanged.
|
|
*/
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 3296. Inconsistent default argument for basic_regex<>::assign
|
|
basic_regex&
|
|
assign(const _Ch_type* __p, size_t __len, flag_type __flags = ECMAScript)
|
|
{ return this->assign(string_type(__p, __len), __flags); }
|
|
|
|
/**
|
|
* @brief Assigns a new regular expression to a regex object from a
|
|
* string containing a regular expression pattern.
|
|
*
|
|
* @param __s A string containing a regular expression pattern.
|
|
* @param __flags Syntax option flags.
|
|
*
|
|
* @throws regex_error if __s does not contain a valid regular
|
|
* expression pattern interpreted according to @p __flags. If
|
|
* regex_error is thrown, *this remains unchanged.
|
|
*/
|
|
template<typename _Ch_traits, typename _Alloc>
|
|
basic_regex&
|
|
assign(const basic_string<_Ch_type, _Ch_traits, _Alloc>& __s,
|
|
flag_type __flags = ECMAScript)
|
|
{
|
|
return this->assign(basic_regex(__s.data(), __s.data() + __s.size(),
|
|
_M_loc, __flags));
|
|
}
|
|
|
|
/**
|
|
* @brief Assigns a new regular expression to a regex object.
|
|
*
|
|
* @param __first The start of a range containing a valid regular
|
|
* expression.
|
|
* @param __last The end of a range containing a valid regular
|
|
* expression.
|
|
* @param __flags Syntax option flags.
|
|
*
|
|
* @throws regex_error if p does not contain a valid regular
|
|
* expression pattern interpreted according to @p __flags. If
|
|
* regex_error is thrown, the object remains unchanged.
|
|
*/
|
|
template<typename _InputIterator>
|
|
basic_regex&
|
|
assign(_InputIterator __first, _InputIterator __last,
|
|
flag_type __flags = ECMAScript)
|
|
{ return this->assign(string_type(__first, __last), __flags); }
|
|
|
|
/**
|
|
* @brief Assigns a new regular expression to a regex object.
|
|
*
|
|
* @param __l An initializer list representing a regular expression.
|
|
* @param __flags Syntax option flags.
|
|
*
|
|
* @throws regex_error if @p __l does not contain a valid
|
|
* regular expression pattern interpreted according to @p
|
|
* __flags. If regex_error is thrown, the object remains
|
|
* unchanged.
|
|
*/
|
|
basic_regex&
|
|
assign(initializer_list<_Ch_type> __l, flag_type __flags = ECMAScript)
|
|
{ return this->assign(__l.begin(), __l.end(), __flags); }
|
|
|
|
// [7.8.4] const operations
|
|
/**
|
|
* @brief Gets the number of marked subexpressions within the regular
|
|
* expression.
|
|
*/
|
|
unsigned int
|
|
mark_count() const
|
|
{
|
|
if (_M_automaton)
|
|
return _M_automaton->_M_sub_count() - 1;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Gets the flags used to construct the regular expression
|
|
* or in the last call to assign().
|
|
*/
|
|
flag_type
|
|
flags() const
|
|
{ return _M_flags; }
|
|
|
|
// [7.8.5] locale
|
|
/**
|
|
* @brief Imbues the regular expression object with the given locale.
|
|
*
|
|
* @param __loc A locale.
|
|
*/
|
|
locale_type
|
|
imbue(locale_type __loc)
|
|
{
|
|
std::swap(__loc, _M_loc);
|
|
_M_automaton.reset();
|
|
return __loc;
|
|
}
|
|
|
|
/**
|
|
* @brief Gets the locale currently imbued in the regular expression
|
|
* object.
|
|
*/
|
|
locale_type
|
|
getloc() const
|
|
{ return _M_loc; }
|
|
|
|
// [7.8.6] swap
|
|
/**
|
|
* @brief Swaps the contents of two regular expression objects.
|
|
*
|
|
* @param __rhs Another regular expression object.
|
|
*/
|
|
void
|
|
swap(basic_regex& __rhs)
|
|
{
|
|
std::swap(_M_flags, __rhs._M_flags);
|
|
std::swap(_M_loc, __rhs._M_loc);
|
|
std::swap(_M_automaton, __rhs._M_automaton);
|
|
}
|
|
|
|
#ifdef _GLIBCXX_DEBUG
|
|
void
|
|
_M_dot(std::ostream& __ostr)
|
|
{ _M_automaton->_M_dot(__ostr); }
|
|
#endif
|
|
|
|
private:
|
|
typedef std::shared_ptr<const __detail::_NFA<_Rx_traits>> _AutomatonPtr;
|
|
|
|
template<typename _FwdIter>
|
|
basic_regex(_FwdIter __first, _FwdIter __last, locale_type __loc,
|
|
flag_type __f)
|
|
: _M_flags(__f), _M_loc(std::move(__loc)),
|
|
_M_automaton(__detail::__compile_nfa<_Rx_traits>(
|
|
std::move(__first), std::move(__last), _M_loc, _M_flags))
|
|
{ }
|
|
|
|
template<typename _Bp, typename _Ap, typename _Cp, typename _Rp,
|
|
__detail::_RegexExecutorPolicy, bool>
|
|
friend bool
|
|
__detail::__regex_algo_impl(_Bp, _Bp, match_results<_Bp, _Ap>&,
|
|
const basic_regex<_Cp, _Rp>&,
|
|
regex_constants::match_flag_type);
|
|
|
|
template<typename, typename, typename, bool>
|
|
friend class __detail::_Executor;
|
|
|
|
flag_type _M_flags;
|
|
locale_type _M_loc;
|
|
_AutomatonPtr _M_automaton;
|
|
};
|
|
|
|
#if __cplusplus < 201703L
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::icase;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::nosubs;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::optimize;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::collate;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::ECMAScript;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::basic;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::extended;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::awk;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::grep;
|
|
|
|
template<typename _Ch, typename _Tr>
|
|
constexpr regex_constants::syntax_option_type
|
|
basic_regex<_Ch, _Tr>::egrep;
|
|
#endif // ! C++17
|
|
|
|
#if __cpp_deduction_guides >= 201606
|
|
template<typename _ForwardIterator>
|
|
basic_regex(_ForwardIterator, _ForwardIterator,
|
|
regex_constants::syntax_option_type = {})
|
|
-> basic_regex<typename iterator_traits<_ForwardIterator>::value_type>;
|
|
#endif
|
|
|
|
/** @brief Standard regular expressions. */
|
|
typedef basic_regex<char> regex;
|
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
/** @brief Standard wide-character regular expressions. */
|
|
typedef basic_regex<wchar_t> wregex;
|
|
#endif
|
|
|
|
|
|
// [7.8.6] basic_regex swap
|
|
/**
|
|
* @brief Swaps the contents of two regular expression objects.
|
|
* @param __lhs First regular expression.
|
|
* @param __rhs Second regular expression.
|
|
* @relates basic_regex
|
|
*/
|
|
template<typename _Ch_type, typename _Rx_traits>
|
|
inline void
|
|
swap(basic_regex<_Ch_type, _Rx_traits>& __lhs,
|
|
basic_regex<_Ch_type, _Rx_traits>& __rhs)
|
|
{ __lhs.swap(__rhs); }
|
|
|
|
|
|
// C++11 28.9 [re.submatch] Class template sub_match
|
|
/**
|
|
* A sequence of characters matched by a particular marked sub-expression.
|
|
*
|
|
* An object of this class is essentially a pair of iterators marking a
|
|
* matched subexpression within a regular expression pattern match. Such
|
|
* objects can be converted to and compared with std::basic_string objects
|
|
* of a similar base character type as the pattern matched by the regular
|
|
* expression.
|
|
*
|
|
* The iterators that make up the pair are the usual half-open interval
|
|
* referencing the actual original pattern matched.
|
|
*/
|
|
template<typename _BiIter>
|
|
class sub_match : public std::pair<_BiIter, _BiIter>
|
|
{
|
|
typedef iterator_traits<_BiIter> __iter_traits;
|
|
|
|
public:
|
|
typedef typename __iter_traits::value_type value_type;
|
|
typedef typename __iter_traits::difference_type difference_type;
|
|
typedef _BiIter iterator;
|
|
typedef basic_string<value_type> string_type;
|
|
|
|
bool matched;
|
|
|
|
constexpr sub_match() noexcept : matched() { }
|
|
|
|
/// Gets the length of the matching sequence.
|
|
difference_type
|
|
length() const noexcept
|
|
{ return this->matched ? std::distance(this->first, this->second) : 0; }
|
|
|
|
/**
|
|
* @brief Gets the matching sequence as a string.
|
|
*
|
|
* @returns the matching sequence as a string.
|
|
*
|
|
* This is the implicit conversion operator. It is identical to the
|
|
* str() member function except that it will want to pop up in
|
|
* unexpected places and cause a great deal of confusion and cursing
|
|
* from the unwary.
|
|
*/
|
|
operator string_type() const
|
|
{ return str(); }
|
|
|
|
/**
|
|
* @brief Gets the matching sequence as a string.
|
|
*
|
|
* @returns the matching sequence as a string.
|
|
*/
|
|
string_type
|
|
str() const
|
|
{
|
|
return this->matched
|
|
? string_type(this->first, this->second)
|
|
: string_type();
|
|
}
|
|
|
|
/**
|
|
* @brief Compares this and another matched sequence.
|
|
*
|
|
* @param __s Another matched sequence to compare to this one.
|
|
*
|
|
* @retval <0 this matched sequence will collate before @p __s.
|
|
* @retval =0 this matched sequence is equivalent to @p __s.
|
|
* @retval <0 this matched sequence will collate after @p __s.
|
|
*/
|
|
int
|
|
compare(const sub_match& __s) const
|
|
{ return this->_M_str().compare(__s._M_str()); }
|
|
|
|
/**
|
|
* @{
|
|
* @brief Compares this sub_match to a string.
|
|
*
|
|
* @param __s A string to compare to this sub_match.
|
|
*
|
|
* @retval <0 this matched sequence will collate before @p __s.
|
|
* @retval =0 this matched sequence is equivalent to @p __s.
|
|
* @retval <0 this matched sequence will collate after @p __s.
|
|
*/
|
|
int
|
|
compare(const string_type& __s) const
|
|
{ return this->_M_str().compare(__s); }
|
|
|
|
int
|
|
compare(const value_type* __s) const
|
|
{ return this->_M_str().compare(__s); }
|
|
// @}
|
|
|
|
/// @cond undocumented
|
|
// Non-standard, used by comparison operators
|
|
int
|
|
_M_compare(const value_type* __s, size_t __n) const
|
|
{ return this->_M_str().compare({__s, __n}); }
|
|
/// @endcond
|
|
|
|
private:
|
|
// Simplified basic_string_view for C++11
|
|
struct __string_view
|
|
{
|
|
using traits_type = typename string_type::traits_type;
|
|
|
|
__string_view() = default;
|
|
|
|
__string_view(const value_type* __s, size_t __n) noexcept
|
|
: _M_data(__s), _M_len(__n) { }
|
|
|
|
__string_view(const value_type* __s) noexcept
|
|
: _M_data(__s), _M_len(traits_type::length(__s)) { }
|
|
|
|
__string_view(const string_type& __s) noexcept
|
|
: _M_data(__s.data()), _M_len(__s.length()) { }
|
|
|
|
int
|
|
compare(__string_view __s) const noexcept
|
|
{
|
|
if (const size_t __n = std::min(_M_len, __s._M_len))
|
|
if (int __ret = traits_type::compare(_M_data, __s._M_data, __n))
|
|
return __ret;
|
|
const difference_type __diff = _M_len - __s._M_len;
|
|
if (__diff > std::numeric_limits<int>::max())
|
|
return std::numeric_limits<int>::max();
|
|
if (__diff < std::numeric_limits<int>::min())
|
|
return std::numeric_limits<int>::min();
|
|
return static_cast<int>(__diff);
|
|
}
|
|
|
|
private:
|
|
const value_type* _M_data = nullptr;
|
|
size_t _M_len = 0;
|
|
};
|
|
|
|
// Create a __string_view over the iterator range.
|
|
template<typename _Iter = _BiIter>
|
|
__enable_if_t<__detail::__is_contiguous_iter<_Iter>::value,
|
|
__string_view>
|
|
_M_str() const noexcept
|
|
{
|
|
if (this->matched)
|
|
if (auto __len = this->second - this->first)
|
|
return { std::__addressof(*this->first), __len };
|
|
return {};
|
|
}
|
|
|
|
// Create a temporary string that can be converted to __string_view.
|
|
template<typename _Iter = _BiIter>
|
|
__enable_if_t<!__detail::__is_contiguous_iter<_Iter>::value,
|
|
string_type>
|
|
_M_str() const
|
|
{ return str(); }
|
|
};
|
|
|
|
|
|
/** @brief Standard regex submatch over a C-style null-terminated string. */
|
|
typedef sub_match<const char*> csub_match;
|
|
|
|
/** @brief Standard regex submatch over a standard string. */
|
|
typedef sub_match<string::const_iterator> ssub_match;
|
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
/** @brief Regex submatch over a C-style null-terminated wide string. */
|
|
typedef sub_match<const wchar_t*> wcsub_match;
|
|
|
|
/** @brief Regex submatch over a standard wide string. */
|
|
typedef sub_match<wstring::const_iterator> wssub_match;
|
|
#endif
|
|
|
|
// [7.9.2] sub_match non-member operators
|
|
|
|
/// @relates sub_match @{
|
|
|
|
/**
|
|
* @brief Tests the equivalence of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) == 0; }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Three-way comparison of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns A value indicating whether `__lhs` is less than, equal to,
|
|
* greater than, or incomparable with `__rhs`.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline auto
|
|
operator<=>(const sub_match<_BiIter>& __lhs,
|
|
const sub_match<_BiIter>& __rhs)
|
|
noexcept(__detail::__is_contiguous_iter<_BiIter>::value)
|
|
{
|
|
using _Tr = char_traits<typename iterator_traits<_BiIter>::value_type>;
|
|
return __detail::__char_traits_cmp_cat<_Tr>(__lhs.compare(__rhs));
|
|
}
|
|
#else
|
|
/**
|
|
* @brief Tests the inequivalence of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator!=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) != 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator<(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) < 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator<=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) <= 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator>=(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) >= 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of two regular expression submatches.
|
|
* @param __lhs First regular expression submatch.
|
|
* @param __rhs Second regular expression submatch.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _BiIter>
|
|
inline bool
|
|
operator>(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs)
|
|
{ return __lhs.compare(__rhs) > 0; }
|
|
#endif // three-way comparison
|
|
|
|
/// @cond undocumented
|
|
|
|
// Alias for a basic_string that can be compared to a sub_match.
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
using __sub_match_string = basic_string<
|
|
typename iterator_traits<_Bi_iter>::value_type,
|
|
_Ch_traits, _Ch_alloc>;
|
|
/// @endcond
|
|
|
|
#if ! __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Tests the equivalence of a string and a regular expression
|
|
* submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs._M_compare(__lhs.data(), __lhs.size()) == 0; }
|
|
|
|
/**
|
|
* @brief Tests the inequivalence of a string and a regular expression
|
|
* submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator!=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a string and a regular expression submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator<(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs._M_compare(__lhs.data(), __lhs.size()) > 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a string and a regular expression submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator>(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a string and a regular expression submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator>=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a string and a regular expression submatch.
|
|
* @param __lhs A string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator<=(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
#endif // three-way comparison
|
|
|
|
/**
|
|
* @brief Tests the equivalence of a regular expression submatch and a
|
|
* string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator==(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return __lhs._M_compare(__rhs.data(), __rhs.size()) == 0; }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Three-way comparison of a regular expression submatch and a string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns A value indicating whether `__lhs` is less than, equal to,
|
|
* greater than, or incomparable with `__rhs`.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Alloc>
|
|
inline auto
|
|
operator<=>(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Alloc>& __rhs)
|
|
noexcept(__detail::__is_contiguous_iter<_Bi_iter>::value)
|
|
{
|
|
return __detail::__char_traits_cmp_cat<_Ch_traits>(
|
|
__lhs._M_compare(__rhs.data(), __rhs.size()));
|
|
}
|
|
#else
|
|
/**
|
|
* @brief Tests the inequivalence of a regular expression submatch and a
|
|
* string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator!=(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator<(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return __lhs._M_compare(__rhs.data(), __rhs.size()) < 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator>(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator>=(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A string.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_traits, typename _Ch_alloc>
|
|
inline bool
|
|
operator<=(const sub_match<_Bi_iter>& __lhs,
|
|
const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
|
|
/**
|
|
* @brief Tests the equivalence of a C string and a regular expression
|
|
* submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator==(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs.compare(__lhs) == 0; }
|
|
|
|
/**
|
|
* @brief Tests the inequivalence of a C string and a regular
|
|
* expression submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator!=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a C string and a regular expression submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs.compare(__lhs) > 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a C string and a regular expression submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a C string and a regular expression submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a C string and a regular expression submatch.
|
|
* @param __lhs A null-terminated string.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
#endif // three-way comparison
|
|
|
|
/**
|
|
* @brief Tests the equivalence of a regular expression submatch and a C
|
|
* string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator==(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return __lhs.compare(__rhs) == 0; }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Three-way comparison of a regular expression submatch and a C
|
|
* string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns A value indicating whether `__lhs` is less than, equal to,
|
|
* greater than, or incomparable with `__rhs`.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline auto
|
|
operator<=>(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
noexcept(__detail::__is_contiguous_iter<_Bi_iter>::value)
|
|
{
|
|
using _Tr = char_traits<typename iterator_traits<_Bi_iter>::value_type>;
|
|
return __detail::__char_traits_cmp_cat<_Tr>(__lhs.compare(__rhs));
|
|
}
|
|
#else
|
|
/**
|
|
* @brief Tests the inequivalence of a regular expression submatch and a
|
|
* string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator!=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a C string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return __lhs.compare(__rhs) < 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a C string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a C string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a C string.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A null-terminated string.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const* __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
|
|
/**
|
|
* @brief Tests the equivalence of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs._M_compare(std::__addressof(__lhs), 1) == 0; }
|
|
|
|
/**
|
|
* @brief Tests the inequivalence of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator!=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs._M_compare(std::__addressof(__lhs), 1) > 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a character and a regular expression
|
|
* submatch.
|
|
* @param __lhs A character.
|
|
* @param __rhs A regular expression submatch.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
|
|
const sub_match<_Bi_iter>& __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
#endif // three-way comparison
|
|
|
|
/**
|
|
* @brief Tests the equivalence of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs is equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator==(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return __lhs._M_compare(std::__addressof(__rhs), 1) == 0; }
|
|
|
|
#if __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Three-way comparison of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns A value indicating whether `__lhs` is less than, equal to,
|
|
* greater than, or incomparable with `__rhs`.
|
|
*/
|
|
|
|
template<typename _Bi_iter>
|
|
inline auto
|
|
operator<=>(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
noexcept(__detail::__is_contiguous_iter<_Bi_iter>::value)
|
|
{
|
|
using _Tr = char_traits<typename iterator_traits<_Bi_iter>::value_type>;
|
|
return __detail::__char_traits_cmp_cat<_Tr>(
|
|
__lhs._M_compare(std::__addressof(__rhs), 1));
|
|
}
|
|
#else
|
|
/**
|
|
* @brief Tests the inequivalence of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs is not equivalent to @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator!=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return !(__lhs == __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs precedes @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return __lhs._M_compare(std::__addressof(__rhs), 1) < 0; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs succeeds @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return __rhs < __lhs; }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs does not precede @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator>=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return !(__lhs < __rhs); }
|
|
|
|
/**
|
|
* @brief Tests the ordering of a regular expression submatch and a
|
|
* character.
|
|
* @param __lhs A regular expression submatch.
|
|
* @param __rhs A character.
|
|
* @returns true if @a __lhs does not succeed @a __rhs, false otherwise.
|
|
*/
|
|
template<typename _Bi_iter>
|
|
inline bool
|
|
operator<=(const sub_match<_Bi_iter>& __lhs,
|
|
typename iterator_traits<_Bi_iter>::value_type const& __rhs)
|
|
{ return !(__rhs < __lhs); }
|
|
#endif // three-way comparison
|
|
|
|
/**
|
|
* @brief Inserts a matched string into an output stream.
|
|
*
|
|
* @param __os The output stream.
|
|
* @param __m A submatch string.
|
|
*
|
|
* @returns the output stream with the submatch string inserted.
|
|
*/
|
|
template<typename _Ch_type, typename _Ch_traits, typename _Bi_iter>
|
|
inline
|
|
basic_ostream<_Ch_type, _Ch_traits>&
|
|
operator<<(basic_ostream<_Ch_type, _Ch_traits>& __os,
|
|
const sub_match<_Bi_iter>& __m)
|
|
{ return __os << __m.str(); }
|
|
|
|
// @} relates sub_match
|
|
|
|
// [7.10] Class template match_results
|
|
|
|
/**
|
|
* @brief The results of a match or search operation.
|
|
*
|
|
* A collection of character sequences representing the result of a regular
|
|
* expression match. Storage for the collection is allocated and freed as
|
|
* necessary by the member functions of class template match_results.
|
|
*
|
|
* This class satisfies the Sequence requirements, with the exception that
|
|
* only the operations defined for a const-qualified Sequence are supported.
|
|
*
|
|
* The sub_match object stored at index 0 represents sub-expression 0, i.e.
|
|
* the whole match. In this case the %sub_match member matched is always true.
|
|
* The sub_match object stored at index n denotes what matched the marked
|
|
* sub-expression n within the matched expression. If the sub-expression n
|
|
* participated in a regular expression match then the %sub_match member
|
|
* matched evaluates to true, and members first and second denote the range
|
|
* of characters [first, second) which formed that match. Otherwise matched
|
|
* is false, and members first and second point to the end of the sequence
|
|
* that was searched.
|
|
*/
|
|
template<typename _Bi_iter,
|
|
typename _Alloc = allocator<sub_match<_Bi_iter> > >
|
|
class match_results
|
|
: private std::vector<sub_match<_Bi_iter>, _Alloc>
|
|
{
|
|
private:
|
|
/*
|
|
* The vector base is empty if this does not represent a match (!ready());
|
|
* Otherwise if it's a match failure, it contains 3 elements:
|
|
* [0] unmatched
|
|
* [1] prefix
|
|
* [2] suffix
|
|
* Otherwise it contains n+4 elements where n is the number of marked
|
|
* sub-expressions:
|
|
* [0] entire match
|
|
* [1] 1st marked subexpression
|
|
* ...
|
|
* [n] nth marked subexpression
|
|
* [n+1] unmatched
|
|
* [n+2] prefix
|
|
* [n+3] suffix
|
|
*/
|
|
typedef std::vector<sub_match<_Bi_iter>, _Alloc> _Base_type;
|
|
typedef std::iterator_traits<_Bi_iter> __iter_traits;
|
|
typedef regex_constants::match_flag_type match_flag_type;
|
|
|
|
public:
|
|
/**
|
|
* @name 28.10 Public Types
|
|
*/
|
|
//@{
|
|
typedef sub_match<_Bi_iter> value_type;
|
|
typedef const value_type& const_reference;
|
|
typedef value_type& reference;
|
|
typedef typename _Base_type::const_iterator const_iterator;
|
|
typedef const_iterator iterator;
|
|
typedef typename __iter_traits::difference_type difference_type;
|
|
typedef typename allocator_traits<_Alloc>::size_type size_type;
|
|
typedef _Alloc allocator_type;
|
|
typedef typename __iter_traits::value_type char_type;
|
|
typedef std::basic_string<char_type> string_type;
|
|
//@}
|
|
|
|
public:
|
|
/**
|
|
* @name 28.10.1 Construction, Copying, and Destruction
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Constructs a default %match_results container.
|
|
* @post size() returns 0 and str() returns an empty string.
|
|
*/
|
|
match_results() : match_results(_Alloc()) { }
|
|
|
|
/**
|
|
* @brief Constructs a default %match_results container.
|
|
* @post size() returns 0 and str() returns an empty string.
|
|
*/
|
|
explicit
|
|
match_results(const _Alloc& __a) noexcept
|
|
: _Base_type(__a)
|
|
{ }
|
|
|
|
/**
|
|
* @brief Copy constructs a %match_results.
|
|
*/
|
|
match_results(const match_results&) = default;
|
|
|
|
/**
|
|
* @brief Move constructs a %match_results.
|
|
*/
|
|
match_results(match_results&&) noexcept = default;
|
|
|
|
/**
|
|
* @brief Assigns rhs to *this.
|
|
*/
|
|
match_results&
|
|
operator=(const match_results&) = default;
|
|
|
|
/**
|
|
* @brief Move-assigns rhs to *this.
|
|
*/
|
|
match_results&
|
|
operator=(match_results&&) = default;
|
|
|
|
/**
|
|
* @brief Destroys a %match_results object.
|
|
*/
|
|
~match_results() = default;
|
|
|
|
//@}
|
|
|
|
// 28.10.2, state:
|
|
/**
|
|
* @brief Indicates if the %match_results is ready.
|
|
* @retval true The object has a fully-established result state.
|
|
* @retval false The object is not ready.
|
|
*/
|
|
bool ready() const noexcept { return !_Base_type::empty(); }
|
|
|
|
/**
|
|
* @name 28.10.2 Size
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Gets the number of matches and submatches.
|
|
*
|
|
* The number of matches for a given regular expression will be either 0
|
|
* if there was no match or mark_count() + 1 if a match was successful.
|
|
* Some matches may be empty.
|
|
*
|
|
* @returns the number of matches found.
|
|
*/
|
|
size_type
|
|
size() const noexcept
|
|
{ return _Base_type::empty() ? 0 : _Base_type::size() - 3; }
|
|
|
|
size_type
|
|
max_size() const noexcept
|
|
{ return _Base_type::max_size() - 3; }
|
|
|
|
/**
|
|
* @brief Indicates if the %match_results contains no results.
|
|
* @retval true The %match_results object is empty.
|
|
* @retval false The %match_results object is not empty.
|
|
*/
|
|
_GLIBCXX_NODISCARD bool
|
|
empty() const noexcept
|
|
{ return size() == 0; }
|
|
|
|
//@}
|
|
|
|
/**
|
|
* @name 28.10.4 Element Access
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Gets the length of the indicated submatch.
|
|
* @param __sub indicates the submatch.
|
|
* @pre ready() == true
|
|
*
|
|
* This function returns the length of the indicated submatch, or the
|
|
* length of the entire match if @p __sub is zero (the default).
|
|
*/
|
|
difference_type
|
|
length(size_type __sub = 0) const
|
|
{ return (*this)[__sub].length(); }
|
|
|
|
/**
|
|
* @brief Gets the offset of the beginning of the indicated submatch.
|
|
* @param __sub indicates the submatch.
|
|
* @pre ready() == true
|
|
*
|
|
* This function returns the offset from the beginning of the target
|
|
* sequence to the beginning of the submatch, unless the value of @p __sub
|
|
* is zero (the default), in which case this function returns the offset
|
|
* from the beginning of the target sequence to the beginning of the
|
|
* match.
|
|
*/
|
|
difference_type
|
|
position(size_type __sub = 0) const
|
|
{ return std::distance(_M_begin, (*this)[__sub].first); }
|
|
|
|
/**
|
|
* @brief Gets the match or submatch converted to a string type.
|
|
* @param __sub indicates the submatch.
|
|
* @pre ready() == true
|
|
*
|
|
* This function gets the submatch (or match, if @p __sub is
|
|
* zero) extracted from the target range and converted to the
|
|
* associated string type.
|
|
*/
|
|
string_type
|
|
str(size_type __sub = 0) const
|
|
{ return string_type((*this)[__sub]); }
|
|
|
|
/**
|
|
* @brief Gets a %sub_match reference for the match or submatch.
|
|
* @param __sub indicates the submatch.
|
|
* @pre ready() == true
|
|
*
|
|
* This function gets a reference to the indicated submatch, or
|
|
* the entire match if @p __sub is zero.
|
|
*
|
|
* If @p __sub >= size() then this function returns a %sub_match with a
|
|
* special value indicating no submatch.
|
|
*/
|
|
const_reference
|
|
operator[](size_type __sub) const
|
|
{
|
|
__glibcxx_assert( ready() );
|
|
return __sub < size()
|
|
? _Base_type::operator[](__sub)
|
|
: _M_unmatched_sub();
|
|
}
|
|
|
|
/**
|
|
* @brief Gets a %sub_match representing the match prefix.
|
|
* @pre ready() == true
|
|
*
|
|
* This function gets a reference to a %sub_match object representing the
|
|
* part of the target range between the start of the target range and the
|
|
* start of the match.
|
|
*/
|
|
const_reference
|
|
prefix() const
|
|
{
|
|
__glibcxx_assert( ready() );
|
|
return !empty() ? _M_prefix() : _M_unmatched_sub();
|
|
}
|
|
|
|
/**
|
|
* @brief Gets a %sub_match representing the match suffix.
|
|
* @pre ready() == true
|
|
*
|
|
* This function gets a reference to a %sub_match object representing the
|
|
* part of the target range between the end of the match and the end of
|
|
* the target range.
|
|
*/
|
|
const_reference
|
|
suffix() const
|
|
{
|
|
__glibcxx_assert( ready() );
|
|
return !empty() ? _M_suffix() : _M_unmatched_sub();
|
|
}
|
|
|
|
/**
|
|
* @brief Gets an iterator to the start of the %sub_match collection.
|
|
*/
|
|
const_iterator
|
|
begin() const noexcept
|
|
{ return _Base_type::begin(); }
|
|
|
|
/**
|
|
* @brief Gets an iterator to the start of the %sub_match collection.
|
|
*/
|
|
const_iterator
|
|
cbegin() const noexcept
|
|
{ return this->begin(); }
|
|
|
|
/**
|
|
* @brief Gets an iterator to one-past-the-end of the collection.
|
|
*/
|
|
const_iterator
|
|
end() const noexcept
|
|
{ return _Base_type::end() - (empty() ? 0 : 3); }
|
|
|
|
/**
|
|
* @brief Gets an iterator to one-past-the-end of the collection.
|
|
*/
|
|
const_iterator
|
|
cend() const noexcept
|
|
{ return this->end(); }
|
|
|
|
//@}
|
|
|
|
/**
|
|
* @name 28.10.5 Formatting
|
|
*
|
|
* These functions perform formatted substitution of the matched
|
|
* character sequences into their target. The format specifiers and
|
|
* escape sequences accepted by these functions are determined by
|
|
* their @p flags parameter as documented above.
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @pre ready() == true
|
|
*/
|
|
template<typename _Out_iter>
|
|
_Out_iter
|
|
format(_Out_iter __out, const char_type* __fmt_first,
|
|
const char_type* __fmt_last,
|
|
match_flag_type __flags = regex_constants::format_default) const;
|
|
|
|
/**
|
|
* @pre ready() == true
|
|
*/
|
|
template<typename _Out_iter, typename _St, typename _Sa>
|
|
_Out_iter
|
|
format(_Out_iter __out, const basic_string<char_type, _St, _Sa>& __fmt,
|
|
match_flag_type __flags = regex_constants::format_default) const
|
|
{
|
|
return format(__out, __fmt.data(), __fmt.data() + __fmt.size(),
|
|
__flags);
|
|
}
|
|
|
|
/**
|
|
* @pre ready() == true
|
|
*/
|
|
template<typename _St, typename _Sa>
|
|
basic_string<char_type, _St, _Sa>
|
|
format(const basic_string<char_type, _St, _Sa>& __fmt,
|
|
match_flag_type __flags = regex_constants::format_default) const
|
|
{
|
|
basic_string<char_type, _St, _Sa> __result;
|
|
format(std::back_inserter(__result), __fmt, __flags);
|
|
return __result;
|
|
}
|
|
|
|
/**
|
|
* @pre ready() == true
|
|
*/
|
|
string_type
|
|
format(const char_type* __fmt,
|
|
match_flag_type __flags = regex_constants::format_default) const
|
|
{
|
|
string_type __result;
|
|
format(std::back_inserter(__result),
|
|
__fmt,
|
|
__fmt + char_traits<char_type>::length(__fmt),
|
|
__flags);
|
|
return __result;
|
|
}
|
|
|
|
//@}
|
|
|
|
/**
|
|
* @name 28.10.6 Allocator
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Gets a copy of the allocator.
|
|
*/
|
|
allocator_type
|
|
get_allocator() const noexcept
|
|
{ return _Base_type::get_allocator(); }
|
|
|
|
//@}
|
|
|
|
/**
|
|
* @name 28.10.7 Swap
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Swaps the contents of two match_results.
|
|
*/
|
|
void
|
|
swap(match_results& __that) noexcept
|
|
{
|
|
using std::swap;
|
|
_Base_type::swap(__that);
|
|
swap(_M_begin, __that._M_begin);
|
|
}
|
|
//@}
|
|
|
|
private:
|
|
template<typename, typename, typename>
|
|
friend class regex_iterator;
|
|
|
|
/// @cond undocumented
|
|
|
|
template<typename, typename, typename, bool>
|
|
friend class __detail::_Executor;
|
|
|
|
template<typename _Bp, typename _Ap, typename _Cp, typename _Rp,
|
|
__detail::_RegexExecutorPolicy, bool>
|
|
friend bool
|
|
__detail::__regex_algo_impl(_Bp, _Bp, match_results<_Bp, _Ap>&,
|
|
const basic_regex<_Cp, _Rp>&,
|
|
regex_constants::match_flag_type);
|
|
|
|
// Reset contents to __size unmatched sub_match objects
|
|
// (plus additional objects for prefix, suffix and unmatched sub).
|
|
void
|
|
_M_resize(unsigned int __size)
|
|
{ _Base_type::assign(__size + 3, sub_match<_Bi_iter>{}); }
|
|
|
|
// Set state to a failed match for the given past-the-end iterator.
|
|
void
|
|
_M_establish_failed_match(_Bi_iter __end)
|
|
{
|
|
sub_match<_Bi_iter> __sm;
|
|
__sm.first = __sm.second = __end;
|
|
_Base_type::assign(3, __sm);
|
|
}
|
|
|
|
const_reference
|
|
_M_unmatched_sub() const
|
|
{ return _Base_type::operator[](_Base_type::size() - 3); }
|
|
|
|
sub_match<_Bi_iter>&
|
|
_M_unmatched_sub()
|
|
{ return _Base_type::operator[](_Base_type::size() - 3); }
|
|
|
|
const_reference
|
|
_M_prefix() const
|
|
{ return _Base_type::operator[](_Base_type::size() - 2); }
|
|
|
|
sub_match<_Bi_iter>&
|
|
_M_prefix()
|
|
{ return _Base_type::operator[](_Base_type::size() - 2); }
|
|
|
|
const_reference
|
|
_M_suffix() const
|
|
{ return _Base_type::operator[](_Base_type::size() - 1); }
|
|
|
|
sub_match<_Bi_iter>&
|
|
_M_suffix()
|
|
{ return _Base_type::operator[](_Base_type::size() - 1); }
|
|
|
|
_Bi_iter _M_begin;
|
|
/// @endcond
|
|
};
|
|
|
|
typedef match_results<const char*> cmatch;
|
|
typedef match_results<string::const_iterator> smatch;
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
typedef match_results<const wchar_t*> wcmatch;
|
|
typedef match_results<wstring::const_iterator> wsmatch;
|
|
#endif
|
|
|
|
// match_results comparisons
|
|
|
|
/**
|
|
* @brief Compares two match_results for equality.
|
|
* @returns true if the two objects refer to the same match,
|
|
* false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, typename _Alloc>
|
|
inline bool
|
|
operator==(const match_results<_Bi_iter, _Alloc>& __m1,
|
|
const match_results<_Bi_iter, _Alloc>& __m2) noexcept
|
|
{
|
|
if (__m1.ready() != __m2.ready())
|
|
return false;
|
|
if (!__m1.ready()) // both are not ready
|
|
return true;
|
|
if (__m1.empty() != __m2.empty())
|
|
return false;
|
|
if (__m1.empty()) // both are empty
|
|
return true;
|
|
return __m1.prefix() == __m2.prefix()
|
|
&& __m1.size() == __m2.size()
|
|
&& std::equal(__m1.begin(), __m1.end(), __m2.begin())
|
|
&& __m1.suffix() == __m2.suffix();
|
|
}
|
|
|
|
#if ! __cpp_lib_three_way_comparison
|
|
/**
|
|
* @brief Compares two match_results for inequality.
|
|
* @returns true if the two objects do not refer to the same match,
|
|
* false otherwise.
|
|
*/
|
|
template<typename _Bi_iter, class _Alloc>
|
|
inline bool
|
|
operator!=(const match_results<_Bi_iter, _Alloc>& __m1,
|
|
const match_results<_Bi_iter, _Alloc>& __m2) noexcept
|
|
{ return !(__m1 == __m2); }
|
|
#endif
|
|
|
|
// [7.10.6] match_results swap
|
|
/**
|
|
* @brief Swaps two match results.
|
|
* @param __lhs A match result.
|
|
* @param __rhs A match result.
|
|
*
|
|
* The contents of the two match_results objects are swapped.
|
|
*/
|
|
template<typename _Bi_iter, typename _Alloc>
|
|
inline void
|
|
swap(match_results<_Bi_iter, _Alloc>& __lhs,
|
|
match_results<_Bi_iter, _Alloc>& __rhs) noexcept
|
|
{ __lhs.swap(__rhs); }
|
|
|
|
_GLIBCXX_END_NAMESPACE_CXX11
|
|
|
|
// [28.11.2] Function template regex_match
|
|
/**
|
|
* @name Matching, Searching, and Replacing
|
|
*/
|
|
//@{
|
|
|
|
/**
|
|
* @brief Determines if there is a match between the regular expression @p e
|
|
* and all of the character sequence [first, last).
|
|
*
|
|
* @param __s Start of the character sequence to match.
|
|
* @param __e One-past-the-end of the character sequence to match.
|
|
* @param __m The match results.
|
|
* @param __re The regular expression.
|
|
* @param __flags Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Bi_iter, typename _Alloc,
|
|
typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_match(_Bi_iter __s,
|
|
_Bi_iter __e,
|
|
match_results<_Bi_iter, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits,
|
|
__detail::_RegexExecutorPolicy::_S_auto, true>
|
|
(__s, __e, __m, __re, __flags);
|
|
}
|
|
|
|
/**
|
|
* @brief Indicates if there is a match between the regular expression @p e
|
|
* and all of the character sequence [first, last).
|
|
*
|
|
* @param __first Beginning of the character sequence to match.
|
|
* @param __last One-past-the-end of the character sequence to match.
|
|
* @param __re The regular expression.
|
|
* @param __flags Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_match(_Bi_iter __first, _Bi_iter __last,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
match_results<_Bi_iter> __what;
|
|
return regex_match(__first, __last, __what, __re, __flags);
|
|
}
|
|
|
|
/**
|
|
* @brief Determines if there is a match between the regular expression @p e
|
|
* and a C-style null-terminated string.
|
|
*
|
|
* @param __s The C-style null-terminated string to match.
|
|
* @param __m The match results.
|
|
* @param __re The regular expression.
|
|
* @param __f Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_type, typename _Alloc, typename _Rx_traits>
|
|
inline bool
|
|
regex_match(const _Ch_type* __s,
|
|
match_results<const _Ch_type*, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __f
|
|
= regex_constants::match_default)
|
|
{ return regex_match(__s, __s + _Rx_traits::length(__s), __m, __re, __f); }
|
|
|
|
/**
|
|
* @brief Determines if there is a match between the regular expression @p e
|
|
* and a string.
|
|
*
|
|
* @param __s The string to match.
|
|
* @param __m The match results.
|
|
* @param __re The regular expression.
|
|
* @param __flags Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_traits, typename _Ch_alloc,
|
|
typename _Alloc, typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_match(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>& __s,
|
|
match_results<typename basic_string<_Ch_type,
|
|
_Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{ return regex_match(__s.begin(), __s.end(), __m, __re, __flags); }
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 2329. regex_match() with match_results should forbid temporary strings
|
|
/// Prevent unsafe attempts to get match_results from a temporary string.
|
|
template<typename _Ch_traits, typename _Ch_alloc,
|
|
typename _Alloc, typename _Ch_type, typename _Rx_traits>
|
|
bool
|
|
regex_match(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>&&,
|
|
match_results<typename basic_string<_Ch_type,
|
|
_Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&,
|
|
const basic_regex<_Ch_type, _Rx_traits>&,
|
|
regex_constants::match_flag_type
|
|
= regex_constants::match_default) = delete;
|
|
|
|
/**
|
|
* @brief Indicates if there is a match between the regular expression @p e
|
|
* and a C-style null-terminated string.
|
|
*
|
|
* @param __s The C-style null-terminated string to match.
|
|
* @param __re The regular expression.
|
|
* @param __f Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_type, class _Rx_traits>
|
|
inline bool
|
|
regex_match(const _Ch_type* __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __f
|
|
= regex_constants::match_default)
|
|
{ return regex_match(__s, __s + _Rx_traits::length(__s), __re, __f); }
|
|
|
|
/**
|
|
* @brief Indicates if there is a match between the regular expression @p e
|
|
* and a string.
|
|
*
|
|
* @param __s [IN] The string to match.
|
|
* @param __re [IN] The regular expression.
|
|
* @param __flags [IN] Controls how the regular expression is matched.
|
|
*
|
|
* @retval true A match exists.
|
|
* @retval false Otherwise.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_traits, typename _Str_allocator,
|
|
typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_match(const basic_string<_Ch_type, _Ch_traits, _Str_allocator>& __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{ return regex_match(__s.begin(), __s.end(), __re, __flags); }
|
|
|
|
// [7.11.3] Function template regex_search
|
|
/**
|
|
* Searches for a regular expression within a range.
|
|
* @param __s [IN] The start of the string to search.
|
|
* @param __e [IN] One-past-the-end of the string to search.
|
|
* @param __m [OUT] The match results.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __flags [IN] Search policy flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string, the content of %m is
|
|
* undefined.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Bi_iter, typename _Alloc,
|
|
typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_search(_Bi_iter __s, _Bi_iter __e,
|
|
match_results<_Bi_iter, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
return __detail::__regex_algo_impl<_Bi_iter, _Alloc, _Ch_type, _Rx_traits,
|
|
__detail::_RegexExecutorPolicy::_S_auto, false>
|
|
(__s, __e, __m, __re, __flags);
|
|
}
|
|
|
|
/**
|
|
* Searches for a regular expression within a range.
|
|
* @param __first [IN] The start of the string to search.
|
|
* @param __last [IN] One-past-the-end of the string to search.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __flags [IN] Search policy flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Bi_iter, typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_search(_Bi_iter __first, _Bi_iter __last,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __re,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
match_results<_Bi_iter> __what;
|
|
return regex_search(__first, __last, __what, __re, __flags);
|
|
}
|
|
|
|
/**
|
|
* @brief Searches for a regular expression within a C-string.
|
|
* @param __s [IN] A C-string to search for the regex.
|
|
* @param __m [OUT] The set of regex matches.
|
|
* @param __e [IN] The regex to search for in @p s.
|
|
* @param __f [IN] The search flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string, the content of %m is
|
|
* undefined.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_type, class _Alloc, class _Rx_traits>
|
|
inline bool
|
|
regex_search(const _Ch_type* __s,
|
|
match_results<const _Ch_type*, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
regex_constants::match_flag_type __f
|
|
= regex_constants::match_default)
|
|
{ return regex_search(__s, __s + _Rx_traits::length(__s), __m, __e, __f); }
|
|
|
|
/**
|
|
* @brief Searches for a regular expression within a C-string.
|
|
* @param __s [IN] The C-string to search.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __f [IN] Search policy flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_search(const _Ch_type* __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
regex_constants::match_flag_type __f
|
|
= regex_constants::match_default)
|
|
{ return regex_search(__s, __s + _Rx_traits::length(__s), __e, __f); }
|
|
|
|
/**
|
|
* @brief Searches for a regular expression within a string.
|
|
* @param __s [IN] The string to search.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __flags [IN] Search policy flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_traits, typename _String_allocator,
|
|
typename _Ch_type, typename _Rx_traits>
|
|
inline bool
|
|
regex_search(const basic_string<_Ch_type, _Ch_traits,
|
|
_String_allocator>& __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{ return regex_search(__s.begin(), __s.end(), __e, __flags); }
|
|
|
|
/**
|
|
* @brief Searches for a regular expression within a string.
|
|
* @param __s [IN] A C++ string to search for the regex.
|
|
* @param __m [OUT] The set of regex matches.
|
|
* @param __e [IN] The regex to search for in @p s.
|
|
* @param __f [IN] The search flags.
|
|
* @retval true A match was found within the string.
|
|
* @retval false No match was found within the string, the content of %m is
|
|
* undefined.
|
|
*
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Ch_traits, typename _Ch_alloc,
|
|
typename _Alloc, typename _Ch_type,
|
|
typename _Rx_traits>
|
|
inline bool
|
|
regex_search(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>& __s,
|
|
match_results<typename basic_string<_Ch_type,
|
|
_Ch_traits, _Ch_alloc>::const_iterator, _Alloc>& __m,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
regex_constants::match_flag_type __f
|
|
= regex_constants::match_default)
|
|
{ return regex_search(__s.begin(), __s.end(), __m, __e, __f); }
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 2329. regex_search() with match_results should forbid temporary strings
|
|
/// Prevent unsafe attempts to get match_results from a temporary string.
|
|
template<typename _Ch_traits, typename _Ch_alloc,
|
|
typename _Alloc, typename _Ch_type,
|
|
typename _Rx_traits>
|
|
bool
|
|
regex_search(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>&&,
|
|
match_results<typename basic_string<_Ch_type,
|
|
_Ch_traits, _Ch_alloc>::const_iterator, _Alloc>&,
|
|
const basic_regex<_Ch_type, _Rx_traits>&,
|
|
regex_constants::match_flag_type
|
|
= regex_constants::match_default) = delete;
|
|
|
|
// std [28.11.4] Function template regex_replace
|
|
/**
|
|
* @brief Search for a regular expression within a range for multiple times,
|
|
and replace the matched parts through filling a format string.
|
|
* @param __out [OUT] The output iterator.
|
|
* @param __first [IN] The start of the string to search.
|
|
* @param __last [IN] One-past-the-end of the string to search.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns __out
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Out_iter, typename _Bi_iter,
|
|
typename _Rx_traits, typename _Ch_type,
|
|
typename _St, typename _Sa>
|
|
inline _Out_iter
|
|
regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const basic_string<_Ch_type, _St, _Sa>& __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
return regex_replace(__out, __first, __last, __e, __fmt.c_str(), __flags);
|
|
}
|
|
|
|
/**
|
|
* @brief Search for a regular expression within a range for multiple times,
|
|
and replace the matched parts through filling a format C-string.
|
|
* @param __out [OUT] The output iterator.
|
|
* @param __first [IN] The start of the string to search.
|
|
* @param __last [IN] One-past-the-end of the string to search.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format C-string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns __out
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Out_iter, typename _Bi_iter,
|
|
typename _Rx_traits, typename _Ch_type>
|
|
_Out_iter
|
|
regex_replace(_Out_iter __out, _Bi_iter __first, _Bi_iter __last,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const _Ch_type* __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default);
|
|
|
|
/**
|
|
* @brief Search for a regular expression within a string for multiple times,
|
|
and replace the matched parts through filling a format string.
|
|
* @param __s [IN] The string to search and replace.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns The string after replacing.
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Rx_traits, typename _Ch_type,
|
|
typename _St, typename _Sa, typename _Fst, typename _Fsa>
|
|
inline basic_string<_Ch_type, _St, _Sa>
|
|
regex_replace(const basic_string<_Ch_type, _St, _Sa>& __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const basic_string<_Ch_type, _Fst, _Fsa>& __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
basic_string<_Ch_type, _St, _Sa> __result;
|
|
regex_replace(std::back_inserter(__result),
|
|
__s.begin(), __s.end(), __e, __fmt, __flags);
|
|
return __result;
|
|
}
|
|
|
|
/**
|
|
* @brief Search for a regular expression within a string for multiple times,
|
|
and replace the matched parts through filling a format C-string.
|
|
* @param __s [IN] The string to search and replace.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format C-string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns The string after replacing.
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Rx_traits, typename _Ch_type,
|
|
typename _St, typename _Sa>
|
|
inline basic_string<_Ch_type, _St, _Sa>
|
|
regex_replace(const basic_string<_Ch_type, _St, _Sa>& __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const _Ch_type* __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
basic_string<_Ch_type, _St, _Sa> __result;
|
|
regex_replace(std::back_inserter(__result),
|
|
__s.begin(), __s.end(), __e, __fmt, __flags);
|
|
return __result;
|
|
}
|
|
|
|
/**
|
|
* @brief Search for a regular expression within a C-string for multiple
|
|
times, and replace the matched parts through filling a format string.
|
|
* @param __s [IN] The C-string to search and replace.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns The string after replacing.
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Rx_traits, typename _Ch_type,
|
|
typename _St, typename _Sa>
|
|
inline basic_string<_Ch_type>
|
|
regex_replace(const _Ch_type* __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const basic_string<_Ch_type, _St, _Sa>& __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
basic_string<_Ch_type> __result;
|
|
regex_replace(std::back_inserter(__result), __s,
|
|
__s + char_traits<_Ch_type>::length(__s),
|
|
__e, __fmt, __flags);
|
|
return __result;
|
|
}
|
|
|
|
/**
|
|
* @brief Search for a regular expression within a C-string for multiple
|
|
times, and replace the matched parts through filling a format C-string.
|
|
* @param __s [IN] The C-string to search and replace.
|
|
* @param __e [IN] The regular expression to search for.
|
|
* @param __fmt [IN] The format C-string.
|
|
* @param __flags [IN] Search and replace policy flags.
|
|
*
|
|
* @returns The string after replacing.
|
|
* @throws an exception of type regex_error.
|
|
*/
|
|
template<typename _Rx_traits, typename _Ch_type>
|
|
inline basic_string<_Ch_type>
|
|
regex_replace(const _Ch_type* __s,
|
|
const basic_regex<_Ch_type, _Rx_traits>& __e,
|
|
const _Ch_type* __fmt,
|
|
regex_constants::match_flag_type __flags
|
|
= regex_constants::match_default)
|
|
{
|
|
basic_string<_Ch_type> __result;
|
|
regex_replace(std::back_inserter(__result), __s,
|
|
__s + char_traits<_Ch_type>::length(__s),
|
|
__e, __fmt, __flags);
|
|
return __result;
|
|
}
|
|
|
|
//@}
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE_CXX11
|
|
|
|
// std [28.12] Class template regex_iterator
|
|
/**
|
|
* An iterator adaptor that will provide repeated calls of regex_search over
|
|
* a range until no more matches remain.
|
|
*/
|
|
template<typename _Bi_iter,
|
|
typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type,
|
|
typename _Rx_traits = regex_traits<_Ch_type> >
|
|
class regex_iterator
|
|
{
|
|
public:
|
|
typedef basic_regex<_Ch_type, _Rx_traits> regex_type;
|
|
typedef match_results<_Bi_iter> value_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
typedef const value_type* pointer;
|
|
typedef const value_type& reference;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
|
|
/**
|
|
* @brief Provides a singular iterator, useful for indicating
|
|
* one-past-the-end of a range.
|
|
*/
|
|
regex_iterator() = default;
|
|
|
|
/**
|
|
* Constructs a %regex_iterator...
|
|
* @param __a [IN] The start of a text range to search.
|
|
* @param __b [IN] One-past-the-end of the text range to search.
|
|
* @param __re [IN] The regular expression to match.
|
|
* @param __m [IN] Policy flags for match rules.
|
|
*/
|
|
regex_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re,
|
|
regex_constants::match_flag_type __m
|
|
= regex_constants::match_default)
|
|
: _M_begin(__a), _M_end(__b), _M_pregex(&__re), _M_flags(__m), _M_match()
|
|
{
|
|
if (!regex_search(_M_begin, _M_end, _M_match, *_M_pregex, _M_flags))
|
|
*this = regex_iterator();
|
|
}
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 2332. regex_iterator should forbid temporary regexes
|
|
regex_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
|
|
regex_constants::match_flag_type
|
|
= regex_constants::match_default) = delete;
|
|
|
|
/// Copy constructs a %regex_iterator.
|
|
regex_iterator(const regex_iterator&) = default;
|
|
|
|
/// Copy assigns one %regex_iterator to another.
|
|
regex_iterator&
|
|
operator=(const regex_iterator&) = default;
|
|
|
|
~regex_iterator() = default;
|
|
|
|
/**
|
|
* @brief Tests the equivalence of two regex iterators.
|
|
*/
|
|
bool
|
|
operator==(const regex_iterator&) const noexcept;
|
|
|
|
/**
|
|
* @brief Tests the inequivalence of two regex iterators.
|
|
*/
|
|
bool
|
|
operator!=(const regex_iterator& __rhs) const noexcept
|
|
{ return !(*this == __rhs); }
|
|
|
|
/**
|
|
* @brief Dereferences a %regex_iterator.
|
|
*/
|
|
const value_type&
|
|
operator*() const noexcept
|
|
{ return _M_match; }
|
|
|
|
/**
|
|
* @brief Selects a %regex_iterator member.
|
|
*/
|
|
const value_type*
|
|
operator->() const noexcept
|
|
{ return &_M_match; }
|
|
|
|
/**
|
|
* @brief Increments a %regex_iterator.
|
|
*/
|
|
regex_iterator&
|
|
operator++();
|
|
|
|
/**
|
|
* @brief Postincrements a %regex_iterator.
|
|
*/
|
|
regex_iterator
|
|
operator++(int)
|
|
{
|
|
auto __tmp = *this;
|
|
++(*this);
|
|
return __tmp;
|
|
}
|
|
|
|
private:
|
|
_Bi_iter _M_begin {};
|
|
_Bi_iter _M_end {};
|
|
const regex_type* _M_pregex = nullptr;
|
|
regex_constants::match_flag_type _M_flags {};
|
|
match_results<_Bi_iter> _M_match;
|
|
};
|
|
|
|
typedef regex_iterator<const char*> cregex_iterator;
|
|
typedef regex_iterator<string::const_iterator> sregex_iterator;
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
typedef regex_iterator<const wchar_t*> wcregex_iterator;
|
|
typedef regex_iterator<wstring::const_iterator> wsregex_iterator;
|
|
#endif
|
|
|
|
// [7.12.2] Class template regex_token_iterator
|
|
/**
|
|
* Iterates over submatches in a range (or @a splits a text string).
|
|
*
|
|
* The purpose of this iterator is to enumerate all, or all specified,
|
|
* matches of a regular expression within a text range. The dereferenced
|
|
* value of an iterator of this class is a std::sub_match object.
|
|
*/
|
|
template<typename _Bi_iter,
|
|
typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type,
|
|
typename _Rx_traits = regex_traits<_Ch_type> >
|
|
class regex_token_iterator
|
|
{
|
|
public:
|
|
typedef basic_regex<_Ch_type, _Rx_traits> regex_type;
|
|
typedef sub_match<_Bi_iter> value_type;
|
|
typedef std::ptrdiff_t difference_type;
|
|
typedef const value_type* pointer;
|
|
typedef const value_type& reference;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
|
|
public:
|
|
/**
|
|
* @brief Default constructs a %regex_token_iterator.
|
|
*
|
|
* A default-constructed %regex_token_iterator is a singular iterator
|
|
* that will compare equal to the one-past-the-end value for any
|
|
* iterator of the same type.
|
|
*/
|
|
regex_token_iterator()
|
|
: _M_position(), _M_subs(), _M_suffix(), _M_n(0), _M_result(nullptr),
|
|
_M_has_m1(false)
|
|
{ }
|
|
|
|
/**
|
|
* Constructs a %regex_token_iterator...
|
|
* @param __a [IN] The start of the text to search.
|
|
* @param __b [IN] One-past-the-end of the text to search.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __submatch [IN] Which submatch to return. There are some
|
|
* special values for this parameter:
|
|
* - -1 each enumerated subexpression does NOT
|
|
* match the regular expression (aka field
|
|
* splitting)
|
|
* - 0 the entire string matching the
|
|
* subexpression is returned for each match
|
|
* within the text.
|
|
* - >0 enumerates only the indicated
|
|
* subexpression from a match within the text.
|
|
* @param __m [IN] Policy flags for match rules.
|
|
*/
|
|
regex_token_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re,
|
|
int __submatch = 0,
|
|
regex_constants::match_flag_type __m
|
|
= regex_constants::match_default)
|
|
: _M_position(__a, __b, __re, __m), _M_subs(1, __submatch), _M_n(0)
|
|
{ _M_init(__a, __b); }
|
|
|
|
/**
|
|
* Constructs a %regex_token_iterator...
|
|
* @param __a [IN] The start of the text to search.
|
|
* @param __b [IN] One-past-the-end of the text to search.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __submatches [IN] A list of subexpressions to return for each
|
|
* regular expression match within the text.
|
|
* @param __m [IN] Policy flags for match rules.
|
|
*/
|
|
regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
|
|
const regex_type& __re,
|
|
const std::vector<int>& __submatches,
|
|
regex_constants::match_flag_type __m
|
|
= regex_constants::match_default)
|
|
: _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
|
|
{ _M_init(__a, __b); }
|
|
|
|
/**
|
|
* Constructs a %regex_token_iterator...
|
|
* @param __a [IN] The start of the text to search.
|
|
* @param __b [IN] One-past-the-end of the text to search.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __submatches [IN] A list of subexpressions to return for each
|
|
* regular expression match within the text.
|
|
* @param __m [IN] Policy flags for match rules.
|
|
*/
|
|
regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
|
|
const regex_type& __re,
|
|
initializer_list<int> __submatches,
|
|
regex_constants::match_flag_type __m
|
|
= regex_constants::match_default)
|
|
: _M_position(__a, __b, __re, __m), _M_subs(__submatches), _M_n(0)
|
|
{ _M_init(__a, __b); }
|
|
|
|
/**
|
|
* Constructs a %regex_token_iterator...
|
|
* @param __a [IN] The start of the text to search.
|
|
* @param __b [IN] One-past-the-end of the text to search.
|
|
* @param __re [IN] The regular expression to search for.
|
|
* @param __submatches [IN] A list of subexpressions to return for each
|
|
* regular expression match within the text.
|
|
* @param __m [IN] Policy flags for match rules.
|
|
*/
|
|
template<std::size_t _Nm>
|
|
regex_token_iterator(_Bi_iter __a, _Bi_iter __b,
|
|
const regex_type& __re,
|
|
const int (&__submatches)[_Nm],
|
|
regex_constants::match_flag_type __m
|
|
= regex_constants::match_default)
|
|
: _M_position(__a, __b, __re, __m),
|
|
_M_subs(__submatches, __submatches + _Nm), _M_n(0)
|
|
{ _M_init(__a, __b); }
|
|
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
|
// 2332. regex_token_iterator should forbid temporary regexes
|
|
regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&, int = 0,
|
|
regex_constants::match_flag_type =
|
|
regex_constants::match_default) = delete;
|
|
regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
|
|
const std::vector<int>&,
|
|
regex_constants::match_flag_type =
|
|
regex_constants::match_default) = delete;
|
|
regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
|
|
initializer_list<int>,
|
|
regex_constants::match_flag_type =
|
|
regex_constants::match_default) = delete;
|
|
template <std::size_t _Nm>
|
|
regex_token_iterator(_Bi_iter, _Bi_iter, const regex_type&&,
|
|
const int (&)[_Nm],
|
|
regex_constants::match_flag_type =
|
|
regex_constants::match_default) = delete;
|
|
|
|
/**
|
|
* @brief Copy constructs a %regex_token_iterator.
|
|
* @param __rhs [IN] A %regex_token_iterator to copy.
|
|
*/
|
|
regex_token_iterator(const regex_token_iterator& __rhs)
|
|
: _M_position(__rhs._M_position), _M_subs(__rhs._M_subs),
|
|
_M_suffix(__rhs._M_suffix), _M_n(__rhs._M_n), _M_has_m1(__rhs._M_has_m1)
|
|
{ _M_normalize_result(); }
|
|
|
|
/**
|
|
* @brief Assigns a %regex_token_iterator to another.
|
|
* @param __rhs [IN] A %regex_token_iterator to copy.
|
|
*/
|
|
regex_token_iterator&
|
|
operator=(const regex_token_iterator& __rhs);
|
|
|
|
/**
|
|
* @brief Compares a %regex_token_iterator to another for equality.
|
|
*/
|
|
bool
|
|
operator==(const regex_token_iterator& __rhs) const;
|
|
|
|
/**
|
|
* @brief Compares a %regex_token_iterator to another for inequality.
|
|
*/
|
|
bool
|
|
operator!=(const regex_token_iterator& __rhs) const
|
|
{ return !(*this == __rhs); }
|
|
|
|
/**
|
|
* @brief Dereferences a %regex_token_iterator.
|
|
*/
|
|
const value_type&
|
|
operator*() const
|
|
{ return *_M_result; }
|
|
|
|
/**
|
|
* @brief Selects a %regex_token_iterator member.
|
|
*/
|
|
const value_type*
|
|
operator->() const
|
|
{ return _M_result; }
|
|
|
|
/**
|
|
* @brief Increments a %regex_token_iterator.
|
|
*/
|
|
regex_token_iterator&
|
|
operator++();
|
|
|
|
/**
|
|
* @brief Postincrements a %regex_token_iterator.
|
|
*/
|
|
regex_token_iterator
|
|
operator++(int)
|
|
{
|
|
auto __tmp = *this;
|
|
++(*this);
|
|
return __tmp;
|
|
}
|
|
|
|
private:
|
|
typedef regex_iterator<_Bi_iter, _Ch_type, _Rx_traits> _Position;
|
|
|
|
void
|
|
_M_init(_Bi_iter __a, _Bi_iter __b);
|
|
|
|
const value_type&
|
|
_M_current_match() const
|
|
{
|
|
if (_M_subs[_M_n] == -1)
|
|
return (*_M_position).prefix();
|
|
else
|
|
return (*_M_position)[_M_subs[_M_n]];
|
|
}
|
|
|
|
constexpr bool
|
|
_M_end_of_seq() const
|
|
{ return _M_result == nullptr; }
|
|
|
|
// [28.12.2.2.4]
|
|
void
|
|
_M_normalize_result()
|
|
{
|
|
if (_M_position != _Position())
|
|
_M_result = &_M_current_match();
|
|
else if (_M_has_m1)
|
|
_M_result = &_M_suffix;
|
|
else
|
|
_M_result = nullptr;
|
|
}
|
|
|
|
_Position _M_position;
|
|
std::vector<int> _M_subs;
|
|
value_type _M_suffix;
|
|
std::size_t _M_n;
|
|
const value_type* _M_result;
|
|
|
|
// Show whether _M_subs contains -1
|
|
bool _M_has_m1;
|
|
};
|
|
|
|
/** @brief Token iterator for C-style NULL-terminated strings. */
|
|
typedef regex_token_iterator<const char*> cregex_token_iterator;
|
|
|
|
/** @brief Token iterator for standard strings. */
|
|
typedef regex_token_iterator<string::const_iterator> sregex_token_iterator;
|
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
/** @brief Token iterator for C-style NULL-terminated wide strings. */
|
|
typedef regex_token_iterator<const wchar_t*> wcregex_token_iterator;
|
|
|
|
/** @brief Token iterator for standard wide-character strings. */
|
|
typedef regex_token_iterator<wstring::const_iterator> wsregex_token_iterator;
|
|
#endif
|
|
|
|
//@} // group regex
|
|
|
|
_GLIBCXX_END_NAMESPACE_CXX11
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
|
|
#include <bits/regex.tcc>
|