--- /dev/null
+// class template regex -*- C++ -*-
+
+// Copyright (C) 2010, 2011 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/**
+ * @file bits/regex.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{regex}
+ */
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+/**
+ * @defgroup regex Regular Expressions
+ * A facility for performing regular expression pattern matching.
+ */
+ //@{
+
+ // [7.7] Class regex_traits
+ /**
+ * @brief Describes aspects of a regular expression.
+ *
+ * A regular expression traits class that satisfies the requirements of
+ * section [28.7].
+ *
+ * The class %regex is parameterized around a set of related types and
+ * functions used to complete the definition of its semantics. This class
+ * satisfies the requirements of such a traits class.
+ */
+ template<typename _Ch_type>
+ struct regex_traits
+ {
+ public:
+ typedef _Ch_type char_type;
+ typedef std::basic_string<char_type> string_type;
+ typedef std::locale locale_type;
+ typedef std::ctype_base::mask char_class_type;
+
+ public:
+ /**
+ * @brief Constructs a default traits object.
+ */
+ regex_traits()
+ { }
+
+ /**
+ * @brief Gives the length of a C-style string starting at @p __p.
+ *
+ * @param __p a pointer to the start of a character sequence.
+ *
+ * @returns the number of characters between @p *__p and the first
+ * default-initialized value of type @p char_type. In other words, uses
+ * the C-string algorithm for determining the length of a sequence of
+ * characters.
+ */
+ static std::size_t
+ length(const char_type* __p)
+ { return string_type::traits_type::length(__p); }
+
+ /**
+ * @brief Performs the identity translation.
+ *
+ * @param __c A character to the locale-specific character set.
+ *
+ * @returns __c.
+ */
+ char_type
+ translate(char_type __c) const
+ { return __c; }
+
+ /**
+ * @brief Translates a character into a case-insensitive equivalent.
+ *
+ * @param __c A character to the locale-specific character set.
+ *
+ * @returns the locale-specific lower-case equivalent of __c.
+ * @throws std::bad_cast if the imbued locale does not support the ctype
+ * facet.
+ */
+ char_type
+ translate_nocase(char_type __c) const
+ {
+ using std::ctype;
+ using std::use_facet;
+ return use_facet<ctype<char_type> >(_M_locale).tolower(__c);
+ }
+
+ /**
+ * @brief Gets a sort key for a character sequence.
+ *
+ * @param __first beginning of the character sequence.
+ * @param __last one-past-the-end of the character sequence.
+ *
+ * Returns a sort key for the character sequence designated by the
+ * iterator range [F1, F2) such that if the character sequence [G1, G2)
+ * sorts before the character sequence [H1, H2) then
+ * v.transform(G1, G2) < v.transform(H1, H2).
+ *
+ * What this really does is provide a more efficient way to compare a
+ * string to multiple other strings in locales with fancy collation
+ * rules and equivalence classes.
+ *
+ * @returns a locale-specific sort key equivalent to the input range.
+ *
+ * @throws std::bad_cast if the current locale does not have a collate
+ * facet.
+ */
+ template<typename _Fwd_iter>
+ string_type
+ transform(_Fwd_iter __first, _Fwd_iter __last) const
+ {
+ using std::collate;
+ using std::use_facet;
+ const collate<_Ch_type>& __c(use_facet<
+ collate<_Ch_type> >(_M_locale));
+ string_type __s(__first, __last);
+ return __c.transform(__s.data(), __s.data() + __s.size());
+ }
+
+ /**
+ * @brief Gets a sort key for a character sequence, independant of case.
+ *
+ * @param __first beginning of the character sequence.
+ * @param __last one-past-the-end of the character sequence.
+ *
+ * Effects: if typeid(use_facet<collate<_Ch_type> >) ==
+ * typeid(collate_byname<_Ch_type>) and the form of the sort key
+ * returned by collate_byname<_Ch_type>::transform(__first, __last)
+ * is known and can be converted into a primary sort key
+ * then returns that key, otherwise returns an empty string.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Fwd_iter>
+ string_type
+ transform_primary(_Fwd_iter __first, _Fwd_iter __last) const
+ { return string_type(); }
+
+ /**
+ * @brief Gets a collation element by name.
+ *
+ * @param __first beginning of the collation element name.
+ * @param __last one-past-the-end of the collation element name.
+ *
+ * @returns a sequence of one or more characters that represents the
+ * collating element consisting of the character sequence designated by
+ * the iterator range [__first, __last). Returns an empty string if the
+ * character sequence is not a valid collating element.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Fwd_iter>
+ string_type
+ lookup_collatename(_Fwd_iter __first, _Fwd_iter __last) const
+ { return string_type(); }
+
+ /**
+ * @brief Maps one or more characters to a named character
+ * classification.
+ *
+ * @param __first beginning of the character sequence.
+ * @param __last one-past-the-end of the character sequence.
+ * @param __icase ignores the case of the classification name.
+ *
+ * @returns an unspecified value that represents the character
+ * classification named by the character sequence designated by
+ * the iterator range [__first, __last). If @p icase is true,
+ * the returned mask identifies the classification regardless of
+ * the case of the characters to be matched (for example,
+ * [[:lower:]] is the same as [[:alpha:]]), otherwise a
+ * case-dependant classification is returned. The value
+ * returned shall be independent of the case of the characters
+ * in the character sequence. If the name is not recognized then
+ * returns a value that compares equal to 0.
+ *
+ * At least the following names (or their wide-character equivalent) are
+ * supported.
+ * - d
+ * - w
+ * - s
+ * - alnum
+ * - alpha
+ * - blank
+ * - cntrl
+ * - digit
+ * - graph
+ * - lower
+ * - print
+ * - punct
+ * - space
+ * - upper
+ * - xdigit
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Fwd_iter>
+ char_class_type
+ lookup_classname(_Fwd_iter __first, _Fwd_iter __last,
+ bool __icase = false) const
+ { return 0; }
+
+ /**
+ * @brief Determines if @p c is a member of an identified class.
+ *
+ * @param __c a character.
+ * @param __f a class type (as returned from lookup_classname).
+ *
+ * @returns true if the character @p __c is a member of the classification
+ * represented by @p __f, false otherwise.
+ *
+ * @throws std::bad_cast if the current locale does not have a ctype
+ * facet.
+ */
+ bool
+ isctype(_Ch_type __c, char_class_type __f) const;
+
+ /**
+ * @brief Converts a digit to an int.
+ *
+ * @param __ch a character representing a digit.
+ * @param __radix the radix if the numeric conversion (limited to 8, 10,
+ * or 16).
+ *
+ * @returns the value represented by the digit __ch in base radix if the
+ * character __ch is a valid digit in base radix; otherwise returns -1.
+ */
+ int
+ value(_Ch_type __ch, int __radix) const;
+
+ /**
+ * @brief Imbues the regex_traits object with a copy of a new locale.
+ *
+ * @param __loc A locale.
+ *
+ * @returns a copy of the previous locale in use by the regex_traits
+ * object.
+ *
+ * @note Calling imbue with a different locale than the one currently in
+ * use invalidates all cached data held by *this.
+ */
+ locale_type
+ imbue(locale_type __loc)
+ {
+ std::swap(_M_locale, __loc);
+ return __loc;
+ }
+
+ /**
+ * @brief Gets a copy of the current locale in use by the regex_traits
+ * object.
+ */
+ locale_type
+ getloc() const
+ { return _M_locale; }
+
+ protected:
+ locale_type _M_locale;
+ };
+
+ template<typename _Ch_type>
+ bool
+ regex_traits<_Ch_type>::
+ isctype(_Ch_type __c, char_class_type __f) const
+ {
+ using std::ctype;
+ using std::use_facet;
+ const ctype<_Ch_type>& __ctype(use_facet<
+ ctype<_Ch_type> >(_M_locale));
+
+ if (__ctype.is(__f, __c))
+ return true;
+
+ // special case of underscore in [[:w:]]
+ if (__c == __ctype.widen('_'))
+ {
+ const char __wb[] = "w";
+ char_class_type __wt = this->lookup_classname(__wb,
+ __wb + sizeof(__wb));
+ if (__f | __wt)
+ return true;
+ }
+
+ // special case of [[:space:]] in [[:blank:]]
+ if (__ctype.is(std::ctype_base::space, __c))
+ {
+ const char __bb[] = "blank";
+ char_class_type __bt = this->lookup_classname(__bb,
+ __bb + sizeof(__bb));
+ if (__f | __bt)
+ return true;
+ }
+
+ return false;
+ }
+
+ template<typename _Ch_type>
+ int
+ regex_traits<_Ch_type>::
+ value(_Ch_type __ch, int __radix) const
+ {
+ std::basic_istringstream<_Ch_type> __is(string_type(1, __ch));
+ int __v;
+ if (__radix == 8)
+ __is >> std::oct;
+ else if (__radix == 16)
+ __is >> std::hex;
+ __is >> __v;
+ return __is.fail() ? -1 : __v;
+ }
+
+ // [7.8] Class basic_regex
+ /**
+ * Objects of specializations of this class represent regular expressions
+ * constructed from sequences of character type @p _Ch_type.
+ *
+ * Storage for the regular expression is allocated and deallocated as
+ * necessary by the member functions of this class.
+ */
+ template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type> >
+ class basic_regex
+ {
+ public:
+ // types:
+ typedef _Ch_type value_type;
+ typedef _Rx_traits traits_type;
+ typedef typename traits_type::string_type string_type;
+ typedef regex_constants::syntax_option_type flag_type;
+ typedef typename traits_type::locale_type locale_type;
+
+ /**
+ * @name Constants
+ * std [28.8.1](1)
+ */
+ //@{
+ static constexpr regex_constants::syntax_option_type icase
+ = regex_constants::icase;
+ static constexpr regex_constants::syntax_option_type nosubs
+ = regex_constants::nosubs;
+ static constexpr regex_constants::syntax_option_type optimize
+ = regex_constants::optimize;
+ static constexpr regex_constants::syntax_option_type collate
+ = regex_constants::collate;
+ static constexpr regex_constants::syntax_option_type ECMAScript
+ = regex_constants::ECMAScript;
+ static constexpr regex_constants::syntax_option_type basic
+ = regex_constants::basic;
+ static constexpr regex_constants::syntax_option_type extended
+ = regex_constants::extended;
+ static constexpr regex_constants::syntax_option_type awk
+ = regex_constants::awk;
+ static constexpr regex_constants::syntax_option_type grep
+ = regex_constants::grep;
+ static constexpr regex_constants::syntax_option_type egrep
+ = regex_constants::egrep;
+ //@}
+
+ // [7.8.2] construct/copy/destroy
+ /**
+ * Constructs a basic regular expression that does not match any
+ * character sequence.
+ */
+ basic_regex()
+ : _M_flags(regex_constants::ECMAScript),
+ _M_automaton(__regex::__compile<const _Ch_type*, _Rx_traits>(0, 0,
+ _M_traits, _M_flags))
+ { }
+
+ /**
+ * @brief Constructs a basic regular expression from the
+ * sequence [__p, __p + char_traits<_Ch_type>::length(__p))
+ * interpreted according to the flags in @p __f.
+ *
+ * @param __p A pointer to the start of a C-style null-terminated string
+ * containing a regular expression.
+ * @param __f Flags indicating the syntax rules and options.
+ *
+ * @throws regex_error if @p __p is not a valid regular expression.
+ */
+ explicit
+ basic_regex(const _Ch_type* __p,
+ flag_type __f = regex_constants::ECMAScript)
+ : _M_flags(__f),
+ _M_automaton(__regex::__compile(__p, __p + _Rx_traits::length(__p),
+ _M_traits, _M_flags))
+ { }
+
+ /**
+ * @brief Constructs a basic regular expression from the sequence
+ * [p, p + len) interpreted according to the flags in @p f.
+ *
+ * @param __p A pointer to the start of a string containing a regular
+ * expression.
+ * @param __len The length of the string containing the regular
+ * expression.
+ * @param __f Flags indicating the syntax rules and options.
+ *
+ * @throws regex_error if @p __p is not a valid regular expression.
+ */
+ basic_regex(const _Ch_type* __p, std::size_t __len, flag_type __f)
+ : _M_flags(__f),
+ _M_automaton(__regex::__compile(__p, __p + __len, _M_traits, _M_flags))
+ { }
+
+ /**
+ * @brief Copy-constructs a basic regular expression.
+ *
+ * @param __rhs A @p regex object.
+ */
+ basic_regex(const basic_regex& __rhs)
+ : _M_flags(__rhs._M_flags), _M_traits(__rhs._M_traits),
+ _M_automaton(__rhs._M_automaton)
+ { }
+
+ /**
+ * @brief Move-constructs a basic regular expression.
+ *
+ * @param __rhs A @p regex object.
+ */
+ basic_regex(const basic_regex&& __rhs) noexcept
+ : _M_flags(__rhs._M_flags), _M_traits(__rhs._M_traits),
+ _M_automaton(std::move(__rhs._M_automaton))
+ { }
+
+ /**
+ * @brief Constructs a basic regular expression from the string
+ * @p s interpreted according to the flags in @p f.
+ *
+ * @param __s A string containing a regular expression.
+ * @param __f Flags indicating the syntax rules and options.
+ *
+ * @throws regex_error if @p __s is not a valid regular expression.
+ */
+ template<typename _Ch_traits, typename _Ch_alloc>
+ explicit
+ basic_regex(const std::basic_string<_Ch_type, _Ch_traits,
+ _Ch_alloc>& __s,
+ flag_type __f = regex_constants::ECMAScript)
+ : _M_flags(__f),
+ _M_automaton(__regex::__compile(__s.begin(), __s.end(),
+ _M_traits, _M_flags))
+ { }
+
+ /**
+ * @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 _InputIterator>
+ basic_regex(_InputIterator __first, _InputIterator __last,
+ flag_type __f = regex_constants::ECMAScript)
+ : _M_flags(__f),
+ _M_automaton(__regex::__compile(__first, __last, _M_traits, _M_flags))
+ { }
+
+ /**
+ * @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 = regex_constants::ECMAScript)
+ : _M_flags(__f),
+ _M_automaton(__regex::__compile(__l.begin(), __l.end(),
+ _M_traits, _M_flags))
+ { }
+
+ /**
+ * @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, flags()); }
+
+ /**
+ * @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_typeraits, typename _Allocator>
+ basic_regex&
+ operator=(const basic_string<_Ch_type, _Ch_typeraits, _Allocator>& __s)
+ { return this->assign(__s, flags()); }
+
+ // [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 = regex_constants::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.
+ */
+ basic_regex&
+ assign(const _Ch_type* __p, std::size_t __len, flag_type __flags)
+ { 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_typeraits, typename _Allocator>
+ basic_regex&
+ assign(const basic_string<_Ch_type, _Ch_typeraits, _Allocator>& __s,
+ flag_type __flags = regex_constants::ECMAScript)
+ {
+ basic_regex __tmp(__s, __flags);
+ this->swap(__tmp);
+ return *this;
+ }
+
+ /**
+ * @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 = regex_constants::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 = regex_constants::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
+ { return _M_automaton->_M_sub_count() - 1; }
+
+ /**
+ * @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)
+ { return _M_traits.imbue(__loc); }
+
+ /**
+ * @brief Gets the locale currently imbued in the regular expression
+ * object.
+ */
+ locale_type
+ getloc() const
+ { return _M_traits.getloc(); }
+
+ // [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_traits, __rhs._M_traits);
+ std::swap(_M_automaton, __rhs._M_automaton);
+ }
+
+#ifdef _GLIBCXX_DEBUG
+ void
+ _M_dot(std::ostream& __ostr)
+ { _M_automaton->_M_dot(__ostr); }
+#endif
+
+ const __regex::_AutomatonPtr&
+ _M_get_automaton() const
+ { return _M_automaton; }
+
+ protected:
+ flag_type _M_flags;
+ _Rx_traits _M_traits;
+ __regex::_AutomatonPtr _M_automaton;
+ };
+
+ /** @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.
+ */
+ 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); }
+
+
+ // [7.9] 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>
+ {
+ public:
+ typedef typename iterator_traits<_BiIter>::value_type value_type;
+ typedef typename iterator_traits<_BiIter>::difference_type
+ difference_type;
+ typedef _BiIter iterator;
+ typedef std::basic_string<value_type> string_type;
+
+ public:
+ bool matched;
+
+ constexpr sub_match() : matched() { }
+
+ /**
+ * Gets the length of the matching sequence.
+ */
+ difference_type
+ length() const
+ { 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 this->matched
+ ? string_type(this->first, this->second)
+ : string_type();
+ }
+
+ /**
+ * @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->str().compare(__s.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->str().compare(__s); }
+
+ /**
+ * @brief Compares this sub_match to a C-style string.
+ *
+ * @param __s A C-style 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 value_type* __s) const
+ { return this->str().compare(__s); }
+ };
+
+
+ /** @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
+
+ /**
+ * @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; }
+
+ /**
+ * @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; }
+
+ /**
+ * @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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __lhs,
+ const sub_match<_Bi_iter>& __rhs)
+ { return __rhs.compare(__lhs.c_str()) == 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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __lhs, const sub_match<_Bi_iter>& __rhs)
+ { return __rhs.compare(__lhs.c_str()) > 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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __lhs, const sub_match<_Bi_iter>& __rhs)
+ { return !(__rhs < __lhs); }
+
+ /**
+ * @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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __rhs)
+ { return __lhs.compare(__rhs.c_str()) == 0; }
+
+ /**
+ * @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 basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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, class _Ch_traits, class _Ch_alloc>
+ inline bool
+ operator<(const sub_match<_Bi_iter>& __lhs,
+ const basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __rhs)
+ { return __lhs.compare(__rhs.c_str()) < 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, class _Ch_traits, class _Ch_alloc>
+ inline bool
+ operator>(const sub_match<_Bi_iter>& __lhs,
+ const basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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, class _Ch_traits, class _Ch_alloc>
+ inline bool
+ operator>=(const sub_match<_Bi_iter>& __lhs,
+ const basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _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, class _Ch_traits, class _Ch_alloc>
+ inline bool
+ operator<=(const sub_match<_Bi_iter>& __lhs,
+ const basic_string<
+ typename iterator_traits<_Bi_iter>::value_type,
+ _Ch_traits, _Ch_alloc>& __rhs)
+ { return !(__rhs < __lhs); }
+
+ /**
+ * @brief Tests the equivalence of a C string and a regular expression
+ * submatch.
+ * @param __lhs A C 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 an iterator value and a regular
+ * expression submatch.
+ * @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>
+ 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 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>
+ 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 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>
+ 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 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>
+ 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 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>
+ inline bool
+ operator<=(typename iterator_traits<_Bi_iter>::value_type const* __lhs,
+ const sub_match<_Bi_iter>& __rhs)
+ { return !(__rhs < __lhs); }
+
+ /**
+ * @brief Tests the equivalence of a regular expression submatch and a
+ * string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A pointer to a 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; }
+
+ /**
+ * @brief Tests the inequivalence of a regular expression submatch and a
+ * string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A pointer to a 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 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>
+ 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 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>
+ 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 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>
+ 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 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>
+ 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 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>
+ inline bool
+ operator==(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
+ const sub_match<_Bi_iter>& __rhs)
+ {
+ return __rhs.compare(typename sub_match<_Bi_iter>::string_type(1, __lhs))
+ == 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>
+ 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 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>
+ inline bool
+ operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
+ const sub_match<_Bi_iter>& __rhs)
+ {
+ return __rhs.compare(typename sub_match<_Bi_iter>::string_type(1, __lhs))
+ > 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>
+ 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 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>
+ 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 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>
+ inline bool
+ operator<=(typename iterator_traits<_Bi_iter>::value_type const& __lhs,
+ const sub_match<_Bi_iter>& __rhs)
+ { return !(__rhs < __lhs); }
+
+ /**
+ * @brief Tests the equivalence of a regular expression submatch and a
+ * string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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(typename sub_match<_Bi_iter>::string_type(1, __rhs))
+ == 0;
+ }
+
+ /**
+ * @brief Tests the inequivalence of a regular expression submatch and a
+ * string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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 string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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(typename sub_match<_Bi_iter>::string_type(1, __rhs))
+ < 0;
+ }
+
+ /**
+ * @brief Tests the ordering of a regular expression submatch and a string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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 string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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 string.
+ * @param __lhs A regular expression submatch.
+ * @param __rhs A const string reference.
+ * @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 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(); }
+
+ // [7.10] Class template match_results
+
+ /*
+ * Special sub_match object representing an unmatched sub-expression.
+ */
+ template<typename _Bi_iter>
+ inline const sub_match<_Bi_iter>&
+ __unmatched_sub()
+ {
+ static const sub_match<_Bi_iter> __unmatched = sub_match<_Bi_iter>();
+ return __unmatched;
+ }
+
+ /**
+ * @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.
+ *
+ * @nosubgrouping
+ */
+ template<typename _Bi_iter,
+ typename _Allocator = allocator<sub_match<_Bi_iter> > >
+ class match_results
+ : private std::vector<sub_match<_Bi_iter>, _Allocator>
+ {
+ private:
+ /*
+ * The vector base is empty if this does not represent a successful match.
+ * Otherwise it contains n+3 elements where n is the number of marked
+ * sub-expressions:
+ * [0] entire match
+ * [1] 1st marked subexpression
+ * ...
+ * [n] nth marked subexpression
+ * [n+1] prefix
+ * [n+2] suffix
+ */
+ typedef std::vector<sub_match<_Bi_iter>, _Allocator> _Base_type;
+
+ public:
+ /**
+ * @name 10.? Public Types
+ */
+ //@{
+ typedef sub_match<_Bi_iter> value_type;
+ typedef const value_type& const_reference;
+ typedef const_reference reference;
+ typedef typename _Base_type::const_iterator const_iterator;
+ typedef const_iterator iterator;
+ typedef typename std::iterator_traits<_Bi_iter>::difference_type
+ difference_type;
+ typedef typename allocator_traits<_Allocator>::size_type
+ size_type;
+ typedef _Allocator allocator_type;
+ typedef typename std::iterator_traits<_Bi_iter>::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.
+ */
+ explicit
+ match_results(const _Allocator& __a = _Allocator())
+ : _Base_type(__a)
+ { }
+
+ /**
+ * @brief Copy constructs a %match_results.
+ */
+ match_results(const match_results& __rhs)
+ : _Base_type(__rhs)
+ { }
+
+ /**
+ * @brief Move constructs a %match_results.
+ */
+ match_results(match_results&& __rhs) noexcept
+ : _Base_type(std::move(__rhs))
+ { }
+
+ /**
+ * @brief Assigns rhs to *this.
+ */
+ match_results&
+ operator=(const match_results& __rhs)
+ {
+ match_results(__rhs).swap(*this);
+ return *this;
+ }
+
+ /**
+ * @brief Move-assigns rhs to *this.
+ */
+ match_results&
+ operator=(match_results&& __rhs)
+ {
+ match_results(std::move(__rhs)).swap(*this);
+ return *this;
+ }
+
+ /**
+ * @brief Destroys a %match_results object.
+ */
+ ~match_results()
+ { }
+
+ //@}
+
+ // 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 { 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
+ {
+ size_type __size = _Base_type::size();
+ return (__size && _Base_type::operator[](0).matched) ? __size - 2 : 0;
+ }
+
+ size_type
+ max_size() const
+ { return _Base_type::max_size(); }
+
+ /**
+ * @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.
+ */
+ bool
+ empty() const
+ { return size() == 0; }
+
+ //@}
+
+ /**
+ * @name 10.3 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.
+ *
+ * Returns -1 if @p __sub is out of range.
+ */
+ difference_type
+ position(size_type __sub = 0) const
+ {
+ return __sub < size() ? std::distance(this->prefix().first,
+ (*this)[__sub].first) : -1;
+ }
+
+ /**
+ * @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 (*this)[__sub].str(); }
+
+ /**
+ * @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_DEBUG_ASSERT( ready() );
+ return __sub < size()
+ ? _Base_type::operator[](__sub)
+ : __unmatched_sub<_Bi_iter>();
+ }
+
+ /**
+ * @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_DEBUG_ASSERT( ready() );
+ return !empty()
+ ? _Base_type::operator[](_Base_type::size() - 2)
+ : __unmatched_sub<_Bi_iter>();
+ }
+
+ /**
+ * @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_DEBUG_ASSERT( ready() );
+ return !empty()
+ ? _Base_type::operator[](_Base_type::size() - 1)
+ : __unmatched_sub<_Bi_iter>();
+ }
+
+ /**
+ * @brief Gets an iterator to the start of the %sub_match collection.
+ */
+ const_iterator
+ begin() const
+ { return _Base_type::begin(); }
+
+ /**
+ * @brief Gets an iterator to the start of the %sub_match collection.
+ */
+ const_iterator
+ cbegin() const
+ { return _Base_type::cbegin(); }
+
+ /**
+ * @brief Gets an iterator to one-past-the-end of the collection.
+ */
+ const_iterator
+ end() const
+ { return !empty() ? _Base_type::end() - 2 : _Base_type::end(); }
+
+ /**
+ * @brief Gets an iterator to one-past-the-end of the collection.
+ */
+ const_iterator
+ cend() const
+ { return end(); }
+
+ //@}
+
+ /**
+ * @name 10.4 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
+ * @todo Implement this function.
+ */
+ template<typename _Out_iter>
+ _Out_iter
+ format(_Out_iter __out, const char_type* __fmt_first,
+ const char_type* __fmt_last,
+ regex_constants::match_flag_type __flags
+ = regex_constants::format_default) const
+ { return __out; }
+
+ /**
+ * @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,
+ regex_constants::match_flag_type __flags
+ = regex_constants::format_default) const
+ {
+ return format(__out, __fmt.data(), __fmt.data() + __fmt.size(),
+ __flags);
+ }
+
+ /**
+ * @pre ready() == true
+ */
+ template<typename _Out_iter, typename _St, typename _Sa>
+ basic_string<char_type, _St, _Sa>
+ format(const basic_string<char_type, _St, _Sa>& __fmt,
+ regex_constants::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,
+ regex_constants::match_flag_type __flags
+ = regex_constants::format_default) const
+ {
+ string_type __result;
+ format(std::back_inserter(__result),
+ __fmt + char_traits<char_type>::length(__fmt),
+ __flags);
+ return __result;
+ }
+
+ //@}
+
+ /**
+ * @name 10.5 Allocator
+ */
+ //@{
+
+ /**
+ * @brief Gets a copy of the allocator.
+ */
+ allocator_type
+ get_allocator() const
+ { return _Base_type::get_allocator(); }
+
+ //@}
+
+ /**
+ * @name 10.6 Swap
+ */
+ //@{
+
+ /**
+ * @brief Swaps the contents of two match_results.
+ */
+ void
+ swap(match_results& __that)
+ { _Base_type::swap(__that); }
+ //@}
+
+ private:
+ friend class __regex::_SpecializedResults<_Bi_iter, _Allocator>;
+ };
+
+ 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 _Allocator>
+ inline bool
+ operator==(const match_results<_Bi_iter, _Allocator>& __m1,
+ const match_results<_Bi_iter, _Allocator>& __m2)
+ {
+ 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();
+ }
+
+ /**
+ * @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 _Allocator>
+ inline bool
+ operator!=(const match_results<_Bi_iter, _Allocator>& __m1,
+ const match_results<_Bi_iter, _Allocator>& __m2)
+ { return !(__m1 == __m2); }
+
+ // [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 _Allocator>
+ inline void
+ swap(match_results<_Bi_iter, _Allocator>& __lhs,
+ match_results<_Bi_iter, _Allocator>& __rhs)
+ { __lhs.swap(__rhs); }
+
+ // [7.11.2] 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.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Bi_iter, typename _Allocator,
+ typename _Ch_type, typename _Rx_traits>
+ bool
+ regex_match(_Bi_iter __s,
+ _Bi_iter __e,
+ match_results<_Bi_iter, _Allocator>& __m,
+ const basic_regex<_Ch_type, _Rx_traits>& __re,
+ regex_constants::match_flag_type __flags
+ = regex_constants::match_default)
+ {
+ __regex::_AutomatonPtr __a = __re._M_get_automaton();
+ __regex::_Automaton::_SizeT __sz = __a->_M_sub_count();
+ __regex::_SpecializedCursor<_Bi_iter> __cs(__s, __e);
+ __regex::_SpecializedResults<_Bi_iter, _Allocator> __r(__sz, __cs, __m);
+ __regex::_Grep_matcher __matcher(__cs, __r, __a, __flags);
+ return __m[0].matched;
+ }
+
+ /**
+ * @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>
+ 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 _Allocator, typename _Rx_traits>
+ inline bool
+ regex_match(const _Ch_type* __s,
+ match_results<const _Ch_type*, _Allocator>& __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 _Allocator, 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, _Allocator>& __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); }
+
+ /**
+ * @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 __first [IN] The start of the string to search.
+ * @param __last [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.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Bi_iter, typename _Allocator,
+ typename _Ch_type, typename _Rx_traits>
+ inline bool
+ regex_search(_Bi_iter __first, _Bi_iter __last,
+ match_results<_Bi_iter, _Allocator>& __m,
+ const basic_regex<_Ch_type, _Rx_traits>& __re,
+ regex_constants::match_flag_type __flags
+ = regex_constants::match_default)
+ { return false; }
+
+ /**
+ * 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.
+ * @doctodo
+ *
+ * @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.
+ * @doctodo
+ *
+ * @throws an exception of type regex_error.
+ */
+ template<typename _Ch_type, class _Allocator, class _Rx_traits>
+ inline bool
+ regex_search(const _Ch_type* __s,
+ match_results<const _Ch_type*, _Allocator>& __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.
+ * @doctodo
+ *
+ * @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.
+ * @doctodo
+ *
+ * @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 _Allocator, 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, _Allocator>& __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); }
+
+ // std [28.11.4] Function template regex_replace
+ /**
+ * @doctodo
+ * @param __out
+ * @param __first
+ * @param __last
+ * @param __e
+ * @param __fmt
+ * @param __flags
+ *
+ * @returns out
+ * @throws an exception of type regex_error.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Out_iter, typename _Bi_iter,
+ typename _Rx_traits, typename _Ch_type>
+ 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>& __fmt,
+ regex_constants::match_flag_type __flags
+ = regex_constants::match_default)
+ { return __out; }
+
+ /**
+ * @doctodo
+ * @param __s
+ * @param __e
+ * @param __fmt
+ * @param __flags
+ *
+ * @returns a copy of string @p s with replacements.
+ *
+ * @throws an exception of type regex_error.
+ */
+ template<typename _Rx_traits, typename _Ch_type>
+ inline basic_string<_Ch_type>
+ regex_replace(const basic_string<_Ch_type>& __s,
+ const basic_regex<_Ch_type, _Rx_traits>& __e,
+ const basic_string<_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.begin(), __s.end(), __e, __fmt, __flags);
+ return __result;
+ }
+
+ //@}
+
+ // 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;
+
+ public:
+ /**
+ * @brief Provides a singular iterator, useful for indicating
+ * one-past-the-end of a range.
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator();
+
+ /**
+ * 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.
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator(_Bi_iter __a, _Bi_iter __b, const regex_type& __re,
+ regex_constants::match_flag_type __m
+ = regex_constants::match_default);
+
+ /**
+ * Copy constructs a %regex_iterator.
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator&
+ operator=(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ bool
+ operator==(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ bool
+ operator!=(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ const value_type&
+ operator*();
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ const value_type*
+ operator->();
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator&
+ operator++();
+
+ /**
+ * @todo Implement this function.
+ * @doctodo
+ */
+ regex_iterator
+ operator++(int);
+
+ private:
+ // these members are shown for exposition only:
+ _Bi_iter begin;
+ _Bi_iter end;
+ const regex_type* pregex;
+ regex_constants::match_flag_type flags;
+ match_results<_Bi_iter> 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.
+ * @todo Implement this function.
+ *
+ * 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();
+
+ /**
+ * 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.
+ *
+ * @todo Implement this function.
+ * @doctodo
+ */
+ 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);
+
+ /**
+ * 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.
+ *
+ * @todo Implement this function.
+ * @doctodo
+ */
+ 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);
+
+ /**
+ * 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.
+
+ * @todo Implement this function.
+ * @doctodo
+ */
+ 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);
+
+ /**
+ * @brief Copy constructs a %regex_token_iterator.
+ * @param __rhs [IN] A %regex_token_iterator to copy.
+ * @todo Implement this function.
+ */
+ regex_token_iterator(const regex_token_iterator& __rhs);
+
+ /**
+ * @brief Assigns a %regex_token_iterator to another.
+ * @param __rhs [IN] A %regex_token_iterator to copy.
+ * @todo Implement this function.
+ */
+ regex_token_iterator&
+ operator=(const regex_token_iterator& __rhs);
+
+ /**
+ * @brief Compares a %regex_token_iterator to another for equality.
+ * @todo Implement this function.
+ */
+ bool
+ operator==(const regex_token_iterator& __rhs);
+
+ /**
+ * @brief Compares a %regex_token_iterator to another for inequality.
+ * @todo Implement this function.
+ */
+ bool
+ operator!=(const regex_token_iterator& __rhs);
+
+ /**
+ * @brief Dereferences a %regex_token_iterator.
+ * @todo Implement this function.
+ */
+ const value_type&
+ operator*();
+
+ /**
+ * @brief Selects a %regex_token_iterator member.
+ * @todo Implement this function.
+ */
+ const value_type*
+ operator->();
+
+ /**
+ * @brief Increments a %regex_token_iterator.
+ * @todo Implement this function.
+ */
+ regex_token_iterator&
+ operator++();
+
+ /**
+ * @brief Postincrements a %regex_token_iterator.
+ * @todo Implement this function.
+ */
+ regex_token_iterator
+ operator++(int);
+
+ private: // data members for exposition only:
+ typedef regex_iterator<_Bi_iter, _Ch_type, _Rx_traits> position_iterator;
+
+ position_iterator __position;
+ const value_type* __result;
+ value_type __suffix;
+ std::size_t __n;
+ std::vector<int> __subs;
+ };
+
+ /** @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_VERSION
+} // namespace
+
projects / cross.git / blobdiff