// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
-/** @file tr1/regex
-* This is a TR1 C++ Library header.
-*/
+/**
+ * @file tr1/regex
+ * @author Stephen M. Webb <stephen.webb@bregmasoft.ca>
+ * This is a TR1 C++ Library header.
+ */
#ifndef _TR1_REGEX
#define _TR1_REGEX 1
+#include <bits/c++config.h>
+#include <algorithm>
+#include <bitset>
+#include <iterator>
+#include <locale>
+#include <stdexcept>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace std
+{
+_GLIBCXX_BEGIN_NAMESPACE(_GLIBCXX_TR1)
+
+/**
+ * @addtogroup tr1_regex Regular Expressions
+ * A facility for performing regular expression pattern matching.
+ * @{
+ */
+
+namespace regex_constants
+{
+ // [7.5.1] Bitmask Type syntax_option_type
+ enum __syntax_option
+ {
+ _S_icase,
+ _S_nosubs,
+ _S_optimize,
+ _S_collate,
+ _S_ECMAScript,
+ _S_basic,
+ _S_extended,
+ _S_awk,
+ _S_grep,
+ _S_egrep,
+ _S_syntax_last
+ };
+
+ /**
+ * @brief This is a bitmask type indicating how to interpret the regex.
+ *
+ * The @c syntax_option_type is implementation defined but it is valid to
+ * perform bitwise operations on these values and expect the right thing to
+ * happen.
+ *
+ * A valid value of type syntax_option_type shall have exactly one of the
+ * elements @c ECMAScript, @c basic, @c extended, @c awk, @c grep, @c egrep
+ * set.
+ */
+ typedef unsigned int syntax_option_type;
+
+ /// Specifies that the matching of regular expressions against a character
+ /// sequence shall be performed without regard to case.
+ static const syntax_option_type icase = 1 << _S_icase;
+
+ /// Specifies that when a regular expression is matched against a character
+ /// container sequence, no sub-expression matches are to be stored in the
+ /// supplied match_results structure.
+ static const syntax_option_type nosubs = 1 << _S_nosubs;
+
+ /// Specifies that the regular expression engine should pay more attention to
+ /// the speed with which regular expressions are matched, and less to the
+ /// speed with which regular expression objects are constructed. Otherwise
+ /// it has no detectable effect on the program output.
+ static const syntax_option_type optimize = 1 << _S_optimize;
+
+ /// Specifies that character ranges of the form [a-b] should be locale
+ /// sensitive.
+ static const syntax_option_type collate = 1 << _S_collate;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by ECMAScript in ECMA-262 [Ecma International, ECMAScript
+ /// Language Specification, Standard Ecma-262, third edition, 1999], as
+ /// modified in tr1 section [7.13]. This grammar is similar to that defined
+ /// in the PERL scripting language but extended with elements found in the
+ /// POSIX regular expression grammar.
+ static const syntax_option_type ECMAScript = 1 << _S_ECMAScript;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by POSIX basic regular expressions in IEEE Std 1003.1-2001,
+ /// Portable Operating System Interface (POSIX), Base Definitions and
+ /// Headers, Section 9, Regular Expressions [IEEE, Information Technology --
+ /// Portable Operating System Interface (POSIX), IEEE Standard 1003.1-2001].
+ static const syntax_option_type basic = 1 << _S_basic;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by POSIX extended regular expressions in IEEE Std 1003.1-2001,
+ /// Portable Operating System Interface (POSIX), Base Definitions and Headers,
+ /// Section 9, Regular Expressions.
+ static const syntax_option_type extended = 1 << _S_extended;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by POSIX utility awk in IEEE Std 1003.1-2001. This option is
+ /// identical to syntax_option_type extended, except that C-style escape
+ /// sequences are supported. These sequences are, explicitly, '\\', '\a',
+ /// '\b', '\f', '\n', '\r', '\t' , '\v', '\"', '\\', and '\ddd' (where ddd is
+ /// one, two, or three octal digits).
+ static const syntax_option_type awk = 1 << _S_awk;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by POSIX utility grep in IEEE Std 1003.1-2001. This option is
+ /// identical to syntax_option_type basic, except that newlines are treated
+ /// as whitespace.
+ static const syntax_option_type grep = 1 << _S_grep;
+
+ /// Specifies that the grammar recognized by the regular expression engine is
+ /// that used by POSIX utility grep when given the -E option in
+ /// IEEE Std 1003.1-2001. This option is identical to syntax_option_type
+ /// extended, except that newlines are treated as whitespace.
+ static const syntax_option_type egrep = 1 << _S_egrep;
+
+
+ // [7.5.2] Bitmask Type match_flag_type
+ enum __match_flag
+ {
+ _S_not_bol,
+ _S_not_eol,
+ _S_not_bow,
+ _S_not_eow,
+ _S_any,
+ _S_not_null,
+ _S_continuous,
+ _S_prev_avail,
+ _S_sed,
+ _S_no_copy,
+ _S_first_only,
+ _S_match_flag_last
+ };
+
+ /**
+ * @brief This is a bitmask type indicating regex matching rules.
+ *
+ * Matching a regular expression against a sequence of characters [first,
+ * last) proceeds according to the rules of the grammar specified for the
+ * regular expression object, modified according to the effects listed
+ * below for any bitmask elements set.
+ *
+ * The @c match_flag_type is implementation defined but it is valid to
+ * perform bitwise operations on these values and expect the right thing to
+ * happen.
+ */
+ typedef std::bitset<_S_match_flag_last> match_flag_type;
+
+ static const match_flag_type match_default = 0;
+
+ /// The first character in the sequence [first, last) is treated as though it
+ /// is not at the beginning of a line, so the character "^" in the regular
+ /// expression shall not match [first, first).
+ static const match_flag_type match_not_bol = 1 << _S_not_bol;
+
+ /// The last character in the sequence [first, last) is treated as though it
+ /// is not at the end of a line, so the character "$" in the regular
+ /// expression shall not match [last, last).
+ static const match_flag_type match_not_eol = 1 << _S_not_eol;
+
+ /// The expression "\b" is not matched against the sub-sequence
+ /// [first,first).
+ static const match_flag_type match_not_bow = 1 << _S_not_bow;
+
+ /// The expression "\b" should not be matched against the sub-sequence
+ /// [last,last).
+ static const match_flag_type match_not_eow = 1 << _S_not_eow;
+
+ /// If more than one match is possible then any match is an acceptable
+ /// result.
+ static const match_flag_type match_any = 1 << _S_any;
+
+ /// The expression does not match an empty sequence.
+ static const match_flag_type match_not_null = 1 << _S_not_null;
+
+ /// The expression only matchs a sub-sequence that begins at first .
+ static const match_flag_type match_continuous = 1 << _S_continuous;
+
+ /// --first is a valid iterator position. When this flag is set then the
+ /// flags match_not_bol and match_not_bow are ignored by the regular
+ /// expression algorithms 7.11 and iterators 7.12.
+ static const match_flag_type match_prev_avail = 1 << _S_prev_avail;
+
+ /// When a regular expression match is to be replaced by a new string, the
+ /// new string is constructed using the rules used by the ECMAScript replace
+ /// function in ECMA- 262 [Ecma International, ECMAScript Language
+ /// Specification, Standard Ecma-262, third edition, 1999], part 15.5.4.11
+ /// String.prototype.replace. In addition, during search and replace
+ /// operations all non-overlapping occurrences of the regular expression
+ /// are located and replaced, and sections of the input that did not match
+ /// the expression are copied unchanged to the output string.
+ ///
+ /// Format strings (from ECMA-262 [15.5.4.11]):
+ /// $$ $
+ /// $& The matched substring.
+ /// $` The portion of <em>string</em> that preceeds the matched substring.
+ /// $' The portion of <em>string</em> that follows the matched substring.
+ /// $n The nth capture, where n is in [1,9] and $n is not followed by a
+ /// decimal digit. If n <= m and the nth capture is undefined, use the
+ /// empty string
+ /// instead. If n > m, the result is implementation-defined.
+ /// $nn The nnth capture, where nn is a two-digit decimal number on [01, 99].
+ /// If nn <= m and the nth capture is undefined, use the empty string
+ /// instead. If nn > m, the result is implementation-defined.
+ ///
+ static const match_flag_type format_default = 0;
+
+ /// When a regular expression match is to be replaced by a new string, the
+ /// new string is constructed using the rules used by the POSIX sed utility
+ /// in IEEE Std 1003.1- 2001 [IEEE, Information Technology -- Portable
+ /// Operating System Interface (POSIX), IEEE Standard 1003.1-2001].
+ static const match_flag_type format_sed = 1 << _S_sed;
+
+ /// During a search and replace operation, sections of the character
+ /// container sequence being searched that do not match the regular
+ /// expression shall not be copied to the output string.
+ static const match_flag_type format_no_copy = 1 << _S_no_copy;
+
+ /// When specified during a search and replace operation, only the first
+ /// occurrence of the regular expression shall be replaced.
+ static const match_flag_type format_first_only = 1 << _S_first_only;
+
+
+ // [7.5.3] implementation-defined error type
+ enum error_type
+ {
+ _S_error_collate,
+ _S_error_ctype,
+ _S_error_escape,
+ _S_error_backref,
+ _S_error_brack,
+ _S_error_paren,
+ _S_error_brace,
+ _S_error_badbrace,
+ _S_error_range,
+ _S_error_space,
+ _S_error_badrepeat,
+ _S_error_complexity,
+ _S_error_stack,
+ _S_error_last
+ };
+
+ /// The expression contained an invalid collating element name.
+ static const error_type error_collate(_S_error_collate);
+
+ /// The expression contained an invalid character class name.
+ static const error_type error_ctype(_S_error_ctype);
+
+ /// The expression contained an invalid escaped character, or a trailing
+ /// escape.
+ static const error_type error_escape(_S_error_escape);
+
+ /// The expression contained an invalid back reference.
+ static const error_type error_backref(_S_error_backref);
+
+ /// The expression contained mismatched [ and ].
+ static const error_type error_brack(_S_error_brack);
+
+ /// The expression contained mismatched ( and ).
+ static const error_type error_paren(_S_error_paren);
+
+ /// The expression contained mismatched { and }
+ static const error_type error_brace(_S_error_brace);
+
+ /// The expression contained an invalid range in a {} expression.
+ static const error_type error_badbrace(_S_error_badbrace);
+
+ /// The expression contained an invalid character range,
+ /// such as [b-a] in most encodings.
+ static const error_type error_range(_S_error_range);
+
+ /// There was insufficient memory to convert the expression into a
+ /// finite state machine.
+ static const error_type error_space(_S_error_space);
+
+ /// One of *?+{ was not preceded by a valid regular expression.
+ static const error_type error_badrepeat(_S_error_badrepeat);
+
+ /// The complexity of an attempted match against a regular expression
+ /// exceeded a pre-set level.
+ static const error_type error_complexity(_S_error_complexity);
+
+ /// There was insufficient memory to determine whether the
+ /// regular expression could match the specified character sequence.
+ static const error_type error_stack(_S_error_stack);
+}
+
+
+ // [7.8] Class regex_error
+ /**
+ * Defines the type of objects thrown as exceptions to report errors from the
+ * regular expression library.
+ */
+ class regex_error
+ : public std::runtime_error
+ {
+ public:
+ /**
+ * @brief constructs a regex_error object.
+ *
+ * @param ecode the regex error code.
+ */
+ explicit
+ regex_error(regex_constants::error_type __ecode)
+ : std::runtime_error("regex_error"), _M_code(__ecode)
+ { }
+
+ /**
+ * @brief gets the regex error code.
+ *
+ * @returns the regex error code.
+ */
+ regex_constants::error_type
+ code() const
+ { return _M_code; }
+
+ protected:
+ regex_constants::error_type _M_code;
+ };
+
+
+ // [7.7] Class regex_traits
+ /**
+ * A regular expression traits class that satisfies the requirements of tr1
+ * section [7.2].
+ *
+ * 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 determiining 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 Dunno.
+ *
+ * @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. WTF??
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Fwd_iter>
+ string_type
+ transform_primary(_Fwd_iter __first, _Fwd_iter __last) const
+ { return string_type(); }
+
+ /**
+ * @breief 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 mire characters to a named character
+ * classification.
+ *
+ * @param first beginning of the character sequence.
+ * @param last one-past-the-end of the character sequence.
+ *
+ * @returns an unspecified value that represents the character
+ * classification named by the character sequence designated by the
+ * iterator range [first, last). 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) 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
+ {
+ using std::ctype;
+ using std::use_facet;
+ const ctype<_Ch_type>& __ctype(use_facet<
+ ctype<_Ch_type> >(_M_locale));
+
+ if (__ctype.is(__c, __f))
+ return true;
+
+ // special case of underscore in [[:w:]]
+ if (__c == __ctype.widen('_'))
+ {
+ const char* const __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 (__c == __ctype.isspace(__c))
+ {
+ const char* const __bb[] = "blank";
+ char_class_type __bt = this->lookup_classname(__bb,
+ __bb + sizeof(__bb));
+ if (__f | __bt)
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * @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.
+ *
+ * @todo Implement this function.
+ */
+ 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;
+ };
+
+
+ // [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 regex_constants::syntax_option_type flag_type;
+ typedef typename _Rx_traits::locale_type locale_type;
+ typedef typename _Rx_traits::string_type string_type;
+
+ // [7.8.1] constants
+ static const regex_constants::syntax_option_type icase
+ = regex_constants::icase;
+ static const regex_constants::syntax_option_type nosubs
+ = regex_constants::nosubs;
+ static const regex_constants::syntax_option_type optimize
+ = regex_constants::optimize;
+ static const regex_constants::syntax_option_type collate
+ = regex_constants::collate;
+ static const regex_constants::syntax_option_type ECMAScript
+ = regex_constants::ECMAScript;
+ static const regex_constants::syntax_option_type basic
+ = regex_constants::basic;
+ static const regex_constants::syntax_option_type extended
+ = regex_constants::extended;
+ static const regex_constants::syntax_option_type awk
+ = regex_constants::awk;
+ static const regex_constants::syntax_option_type grep
+ = regex_constants::grep;
+ static const 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_pattern(), _M_mark_count(0)
+ { _M_compile(); }
+
+ /**
+ * @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_pattern(__p), _M_mark_count(0)
+ { _M_compile(); }
+
+ /**
+ * @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_pattern(__p, __len), _M_mark_count(0)
+ { _M_compile(); }
+
+ /**
+ * @brief Copy-contructs a basic regular expression.
+ *
+ * @param rhs A @p regex object.
+ */
+ basic_regex(const basic_regex& __rhs)
+ : _M_flags(__rhs._M_flags), _M_pattern(__rhs._M_pattern),
+ _M_mark_count(__rhs._M_mark_count)
+ { _M_compile(); }
+
+ /**
+ * @brief Constructs a basic regular expression from the string
+ * @p interpreted according to the flags in @p f.
+ *
+ * @param p A 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.
+ */
+ template<typename _Ch_traits, typename _Ch_alloc>
+ explicit
+ basic_regex(const basic_string<_Ch_type, _Ch_traits, _Ch_alloc>& __s,
+ flag_type __f = regex_constants::ECMAScript)
+ : _M_flags(__f), _M_pattern(__s), _M_mark_count(0)
+ { _M_compile(); }
+
+ /**
+ * @brief Constructs a basic regular expression from the range
+ * [first, last) interpreted according to the flags in @p f.
+ *
+ * @param first The start of arange 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 p 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_pattern(__first, __last), _M_mark_count(0)
+ { _M_compile(); }
+
+ /**
+ * @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 Replaces a regular expression with a new one constructed from
+ * a C-style null-terminated string.
+ *
+ * @param 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 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 that Another regular expression object.
+ */
+ basic_regex&
+ assign(const basic_regex& __that)
+ {
+ basic_regex __tmp(__that);
+ 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 p 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 __f = regex_constants::ECMAScript)
+ {
+ basic_regex __tmp(__s, __f);
+ 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,
+ * *this 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); }
+
+ // [7.8.4] const operations
+ /**
+ * @brief Gets the number of marked subexpressions within the regular
+ * expresison.
+ */
+ unsigned int
+ mark_count() const
+ { return _M_mark_count; }
+
+ /**
+ * @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 obects.
+ *
+ * @param rhs Another regular expression object.
+ */
+ void
+ swap(basic_regex& __rhs)
+ {
+ std::swap(_M_flags, __rhs._M_flags);
+ std::swap(_M_pattern, __rhs._M_pattern);
+ std::swap(_M_mark_count, __rhs._M_mark_count);
+ std::swap(_M_traits, __rhs._M_traits);
+ }
+
+ private:
+ /**
+ * @brief Compiles a regular expression pattern into a NFA.
+ * @todo Implement this function.
+ */
+ void _M_compile()
+ { }
+
+ protected:
+ flag_type _M_flags;
+ string_type _M_pattern;
+ unsigned int _M_mark_count;
+ _Rx_traits _M_traits;
+ };
+
+ typedef basic_regex<char> regex;
+#ifdef _GLIBCXX_USE_WCHAR_T
+ 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)
+ { return __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;
+
+ public:
+ bool 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 basic_string<value_type>() const
+ {
+ return this->matched
+ ? std::basic_string<value_type>(this->first, this->second)
+ : std::basic_string<value_type>();
+ }
+
+ /**
+ * @brief Gets the matching sequence as a string.
+ *
+ * @returns the matching sequence as a string.
+ */
+ basic_string<value_type>
+ str() const
+ {
+ return this->matched
+ ? std::basic_string<value_type>(this->first, this->second)
+ : std::basic_string<value_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 basic_string<value_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); }
+ };
+
+
+ typedef sub_match<const char*> csub_match;
+ typedef sub_match<string::const_iterator> ssub_match;
+#ifdef _GLIBCXX_USE_WCHAR_T
+ typedef sub_match<const wchar_t*> wcsub_match;
+ 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 preceed @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 __lhs == __rhs.str(); }
+
+ /**
+ * @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.str(); }
+
+ /**
+ * @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 __lhs < __rhs.str(); }
+
+ /**
+ * @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 __lhs > __rhs.str(); }
+
+ /**
+ * @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 preceed @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.str(); }
+
+ /**
+ * @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 __lhs <= __rhs.str(); }
+
+ /**
+ * @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.str() == __rhs; }
+
+ /**
+ * @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.str() != __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.str() < __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 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 __lhs.str() > __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 preceed @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.str() >= __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 __lhs.str() <= __rhs; }
+
+ /**
+ * @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 __lhs == __rhs.str(); }
+
+ /**
+ * @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.str(); }
+
+ /**
+ * @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 __lhs < __rhs.str(); }
+
+ /**
+ * @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 __lhs > __rhs.str(); }
+
+ /**
+ * @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 preceed @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.str(); }
+
+ /**
+ * @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 __lhs <= __rhs.str(); }
+
+ /**
+ * @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.str() == __rhs; }
+
+ /**
+ * @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.str() != __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.str() < __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 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 __lhs.str() > __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 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.str() >= __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 __lhs.str() <= __rhs; }
+
+ /**
+ * @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 __lhs == __rhs.str(); }
+
+ /**
+ * @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.str(); }
+
+ /**
+ * @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 __lhs < __rhs.str(); }
+
+ /**
+ * @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 __lhs > __rhs.str(); }
+
+ /**
+ * @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 preceed @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.str(); }
+
+ /**
+ * @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 __lhs <= __rhs.str(); }
+
+ /**
+ * @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.str() == __rhs; }
+
+ /**
+ * @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.str() != __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 preceeds @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.str() < __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 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 __lhs.str() > __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 preceed @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.str() >= __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 __lhs.str() <= __rhs; }
+
+ /**
+ * @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
+ /**
+ * 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 _Allocator = allocator<sub_match<_Bi_iter> > >
+ class match_results
+ : private std::vector<std::_GLIBCXX_TR1::sub_match<_Bi_iter>, _Allocator>
+ {
+ private:
+ typedef std::vector<std::_GLIBCXX_TR1::sub_match<_Bi_iter>, _Allocator>
+ _Base_type;
+
+ public:
+ typedef sub_match<_Bi_iter> value_type;
+ typedef typename _Allocator::const_reference const_reference;
+ typedef const_reference reference;
+ typedef typename _Base_type::const_iterator const_iterator;
+ typedef const_iterator iterator;
+ typedef typename iterator_traits<_Bi_iter>::difference_type
+ difference_type;
+ typedef typename _Allocator::size_type size_type;
+ typedef _Allocator allocator_type;
+ typedef typename iterator_traits<_Bi_iter>::value_type char_type;
+ typedef basic_string<char_type> string_type;
+
+ public:
+ // [7.10.1] construct/copy/destroy
+ /**
+ * @brief Constructs a default match_results container.
+ */
+ explicit
+ match_results(const _Allocator& __a = _Allocator())
+ : _Base_type(__a), _M_matched(false)
+ { }
+
+ /**
+ * @brief Copy constructs a match_result.
+ */
+ match_results(const match_results& __rhs)
+ : _Base_type(__rhs), _M_matched(__rhs._M_matched),
+ _M_prefix(__rhs._M_prefix), _M_suffix(__rhs._M_suffix)
+ { }
+
+ /**
+ * @brief Assigns rhs to *this.
+ */
+ match_results&
+ operator=(const match_results& __rhs)
+ {
+ match_results __tmp(__rhs);
+ this->swap(__tmp);
+ }
+
+ /**
+ * @todo Implement this function.
+ */
+ ~match_results()
+ { }
+
+ // [7.10.2] size
+ /**
+ * @todo Document this function.
+ */
+ size_type
+ size() const
+ { return _M_matched ? _Base_type::size() + 1 : 0; }
+
+ /**
+ * @todo Implement this function.
+ */
+ //size_type
+ //max_size() const;
+ using _Base_type::max_size;
+
+ /**
+ * @todo Document this function.
+ */
+ bool
+ empty() const
+ { return size() == 0; }
+
+ // [7.10.3] element access
+ /**
+ * @brief Gets the length of the indicated submatch.
+ * @param sub indicates the submatch.
+ */
+ difference_type
+ length(size_type __sub = 0) const
+ { return _M_matched ? this->str(__sub).length() : 0; }
+
+ /**
+ * @todo Document this function.
+ */
+ difference_type
+ position(size_type __sub = 0) const
+ {
+ return _M_matched ? std::distance(this->prefix().first,
+ (*this)[__sub].first) : 0;
+ }
+
+ /**
+ * @todo Document this function.
+ */
+ string_type
+ str(size_type __sub = 0) const
+ { return _M_matched ? (*this)[__sub].str() : string_type(); }
+
+ /**
+ * @todo Document this function.
+ */
+ const_reference
+ operator[](size_type __n) const
+ { return _Base_type::operator[](__n); }
+
+ /**
+ * @todo Document this function.
+ */
+ const_reference
+ prefix() const
+ { return _M_prefix; }
+
+ /**
+ * @todo Document this function.
+ */
+ const_reference
+ suffix() const
+ { return _M_suffix; }
+
+ /**
+ * @todo Document this function.
+ */
+ const_iterator
+ begin() const
+ { return _Base_type::begin(); }
+
+ /**
+ * @todo Document this function.
+ */
+ const_iterator
+ end() const
+ { return _Base_type::end(); }
+
+ // [7.10.4] format
+ /**
+ * @todo Implement this function.
+ */
+ template<typename _Out_iter>
+ _Out_iter
+ format(_Out_iter __out, const string_type& __fmt,
+ regex_constants::match_flag_type __flags
+ = regex_constants::format_default) const
+ { return __out; }
+
+ /**
+ * @todo Implement this function.
+ */
+ string_type
+ format(const string_type& __fmt,
+ regex_constants::match_flag_type __flags
+ = regex_constants::format_default) const;
+
+ // [7.10.5] allocator
+ /**
+ * @todo Document this function.
+ */
+ //allocator_type
+ //get_allocator() const;
+ using _Base_type::get_allocator;
+
+ // [7.10.6] swap
+ /**
+ * @todo Document this function.
+ */
+ void
+ swap(match_results& __that)
+ {
+ _Base_type::swap(__that);
+ std::swap(_M_matched, __that._M_matched);
+ std::swap(_M_prefix, __that._M_prefix);
+ std::swap(_M_suffix, __that._M_suffix);
+ }
+
+ private:
+ bool _M_matched;
+ value_type _M_prefix;
+ value_type _M_suffix;
+ };
+
+ 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
+ /**
+ * @todo Implement this function.
+ */
+ template<typename _Bi_iter, typename _Allocator>
+ inline bool
+ operator==(const match_results<_Bi_iter, _Allocator>& __m1,
+ const match_results<_Bi_iter, _Allocator>& __m2);
+
+ /**
+ * @todo Implement this function.
+ */
+ template<typename _Bi_iter, class _Allocator>
+ inline bool
+ operator!=(const match_results<_Bi_iter, _Allocator>& __m1,
+ const match_results<_Bi_iter, _Allocator>& __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)
+ { return __lhs.swap(__rhs); }
+
+ // [7.11.2] Function template regex_match
+ /**
+ * @brief Determines 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 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.
+ *
+ * @todo Implement this function.
+ */
+ template<typename _Bi_iter, typename _Allocator,
+ typename _Ch_type, typename _Rx_traits>
+ bool
+ regex_match(_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; }
+
+ /**
+ * @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.
+ */
+ 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.
+ */
+ 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.
+ */
+ 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.
+ */
+ 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.
+ */
+ 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.
+ * @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.
+ * @todo Document me.
+ */
+ 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 mnatches.
+ * @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.
+ * @todo Document me.
+ */
+ 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 expressioon 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.
+ * @todo Document me.
+ */
+ 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 expressioon 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.
+ * @todo Document me.
+ */
+ 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 mnatches.
+ * @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.
+ */
+ 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); }
+
+ // [7.11.4] Function template regex_replace
+ /**
+ * @todo Implement this function.
+ * @todo Document 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; }
+
+ /**
+ * @todo Document me.
+ */
+ 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)
+ {
+ std::string __result;
+ regex_replace(std::back_inserter(__result),
+ __s.begin(), __s.end(), __e, __fmt, __flags);
+ return __result;
+ }
+
+ // [7.12.1] 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.
+ * @todo Document this function.
+ */
+ 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.
+ * @todo Document this function.
+ */
+ 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.
+ * @todo Document this function.
+ */
+ regex_iterator(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ regex_iterator&
+ operator=(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ bool
+ operator==(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ bool
+ operator!=(const regex_iterator& __rhs);
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ const value_type&
+ operator*();
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ const value_type*
+ operator->();
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ regex_iterator&
+ operator++();
+
+ /**
+ * @todo Implement this function.
+ * @todo Document this function.
+ */
+ 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 "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::tr1::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();
+
+ /**
+ * Constrcts a %regex_token_iterator...
+ * @param a [IN] The start of the text to search.
+ * @param b [IN] One-past-the-eend 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 thsi 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.
+ * @todo Document this function.
+ */
+ 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);
+
+ /**
+ * Constrcts a %regex_token_iterator...
+ * @param a [IN] The start of the text to search.
+ * @param b [IN] One-past-the-eend 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.
+ * @todo Document this function.
+ */
+ 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);
+
+ /**
+ * Constrcts a %regex_token_iterator...
+ * @param a [IN] The start of the text to search.
+ * @param b [IN] One-past-the-eend 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.
+ * @todo Document this function.
+ */
+ 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;
+ };
+
+ typedef regex_token_iterator<const char*> cregex_token_iterator;
+ typedef regex_token_iterator<string::const_iterator> sregex_token_iterator;
+#ifdef _GLIBCXX_USE_WCHAR_T
+ typedef regex_token_iterator<const wchar_t*> wcregex_token_iterator;
+ typedef regex_token_iterator<wstring::const_iterator> wsregex_token_iterator;
+#endif
+
+ /** @} */ // group tr1_regex
+
+_GLIBCXX_END_NAMESPACE
+}
+
+#endif // _TR1_REGEX
projects / thirdparty / gcc.git / commitdiff
