std::basic_regex< _Ch_type, _Rx_traits >(3) Library Functions Manual std::basic_regex< _Ch_type, _Rx_traits >(3)
NAME
std::basic_regex< _Ch_type, _Rx_traits > -
SYNOPSIS
Public Types
typedef
regex_constants::syntax_option_type flag_type"
typedef traits_type::locale_type locale_type
typedef traits_type::string_type string_type
typedef _Rx_traits traits_type
typedef _Ch_type value_type
Public Member Functions
basic_regex ()
basic_regex (const _Ch_type *__p, flag_type __f=ECMAScript)
basic_regex (const _Ch_type *__p, std::size_t __len, flag_type __f)
basic_regex (const basic_regex &__rhs)
basic_regex (const basic_regex &&__rhs) noexcept
template<typename _Ch_traits , typename _Ch_alloc > basic_regex (const std::basic_string< _Ch_type, _Ch_traits, _Ch_alloc > &__s, flag_type
__f=ECMAScript)
template<typename _InputIterator > basic_regex (_InputIterator __first, _InputIterator __last, flag_type __f=ECMAScript)
basic_regex (initializer_list< _Ch_type > __l, flag_type __f=ECMAScript)
~basic_regex ()
const __detail::_AutomatonPtr & _M_get_automaton () const
basic_regex & assign (const basic_regex &__rhs)
basic_regex & assign (basic_regex &&__rhs) noexcept
basic_regex & assign (const _Ch_type *__p, flag_type __flags=ECMAScript)
basic_regex & assign (const _Ch_type *__p, std::size_t __len, flag_type __flags)
template<typename _Ch_typeraits , typename _Alloc > basic_regex & assign (const basic_string< _Ch_type, _Ch_typeraits, _Alloc > &__s,
flag_type __flags=ECMAScript)
template<typename _InputIterator > basic_regex & assign (_InputIterator __first, _InputIterator __last, flag_type __flags=ECMAScript)
basic_regex & assign (initializer_list< _Ch_type > __l, flag_type __flags=ECMAScript)
flag_type flags () const
locale_type getloc () const
locale_type imbue (locale_type __loc)
unsigned int mark_count () const
basic_regex & operator= (const basic_regex &__rhs)
basic_regex & operator= (basic_regex &&__rhs) noexcept
basic_regex & operator= (const _Ch_type *__p)
template<typename _Ch_typeraits , typename _Alloc > basic_regex & operator= (const basic_string< _Ch_type, _Ch_typeraits, _Alloc > &__s)
void swap (basic_regex &__rhs)
Static Public Attributes
Constants
std [28.8.1](1)
static constexpr flag_type icase
static constexpr flag_type nosubs
static constexpr flag_type optimize
static constexpr flag_type collate
static constexpr flag_type ECMAScript
static constexpr flag_type basic
static constexpr flag_type extended
static constexpr flag_type awk
static constexpr flag_type grep
static constexpr flag_type egrep
Protected Attributes
__detail::_AutomatonPtr _M_automaton
flag_type _M_flags
_Rx_traits _M_traits
Detailed Description
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>>class std::basic_regex< _Ch_type, _Rx_traits >
Objects of specializations of this class represent regular expressions constructed from sequences of character type _Ch_type.
Storage for the regular expression is allocated and deallocated as necessary by the member functions of this class.
Definition at line 335 of file regex.h.
Constructor &; Destructor Documentation
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex () [inline]
Constructs a basic regular expression that does not match any character sequence.
Definition at line 367 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex (const _Ch_type
*__p, flag_type__f = ECMAScript) [inline], [explicit]
Constructs a basic regular expression from the sequence [__p, __p + char_traits<_Ch_type>::length(__p)) interpreted according to the flags
in __f.
Parameters:
__p A pointer to the start of a C-style null-terminated string containing a regular expression.
__f Flags indicating the syntax rules and options.
Exceptions:
regex_error if __p is not a valid regular expression.
Definition at line 385 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex (const _Ch_type
*__p, std::size_t__len, flag_type__f) [inline]
Constructs a basic regular expression from the sequence [p, p + len) interpreted according to the flags in f.
Parameters:
__p A pointer to the start of a string containing a regular expression.
__len The length of the string containing the regular expression.
__f Flags indicating the syntax rules and options.
Exceptions:
regex_error if __p is not a valid regular expression.
Definition at line 403 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex (const
basic_regex< _Ch_type, _Rx_traits > &__rhs) [inline]
Copy-constructs a basic regular expression.
Parameters:
__rhs A regex object.
Definition at line 413 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex (const
basic_regex< _Ch_type, _Rx_traits > &&__rhs) [inline], [noexcept]
Move-constructs a basic regular expression.
Parameters:
__rhs A regex object.
Definition at line 423 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> template<typename _Ch_traits , typename _Ch_alloc > std::basic_regex<
_Ch_type, _Rx_traits >::basic_regex (const std::basic_string< _Ch_type, _Ch_traits, _Ch_alloc > &__s, flag_type__f = ECMAScript) [inline],
[explicit]
Constructs a basic regular expression from the string s interpreted according to the flags in f.
Parameters:
__s A string containing a regular expression.
__f Flags indicating the syntax rules and options.
Exceptions:
regex_error if __s is not a valid regular expression.
Definition at line 439 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> template<typename _InputIterator > std::basic_regex< _Ch_type,
_Rx_traits >::basic_regex (_InputIterator__first, _InputIterator__last, flag_type__f = ECMAScript) [inline]
Constructs a basic regular expression from the range [first, last) interpreted according to the flags in f.
Parameters:
__first The start of a range containing a valid regular expression.
__last The end of a range containing a valid regular expression.
__f The format flags of the regular expression.
Exceptions:
regex_error if [__first, __last) is not a valid regular expression.
Definition at line 461 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::basic_regex
(initializer_list< _Ch_type >__l, flag_type__f = ECMAScript) [inline]
Constructs a basic regular expression from an initializer list.
Parameters:
__l The initializer list.
__f The format flags of the regular expression.
Exceptions:
regex_error if __l is not a valid regular expression.
Definition at line 475 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> std::basic_regex< _Ch_type, _Rx_traits >::~basic_regex () [inline]
Destroys a basic regular expression.
Definition at line 485 of file regex.h.
Member Function Documentation
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::assign (const
basic_regex< _Ch_type, _Rx_traits > &__rhs) [inline]
the real assignment operator.
Parameters:
__rhs Another regular expression object.
Definition at line 531 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::swap().
Referenced by std::basic_regex< _Ch_type, _Rx_traits >::assign(), and std::basic_regex< _Ch_type, _Rx_traits >::operator=().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::assign
(basic_regex< _Ch_type, _Rx_traits > &&__rhs) [inline], [noexcept]
The move-assignment operator.
Parameters:
__rhs Another regular expression object.
Definition at line 544 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::swap().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::assign (const
_Ch_type *__p, flag_type__flags = ECMAScript) [inline]
Assigns a new regular expression to a regex object from a C-style null-terminated string containing a regular expression pattern.
Parameters:
__p A pointer to a C-style null-terminated string containing a regular expression pattern.
__flags Syntax option flags.
Exceptions:
regex_error if __p does not contain a valid regular expression pattern interpreted according to __flags. If regex_error is thrown,
*this remains unchanged.
Definition at line 565 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::assign (const
_Ch_type *__p, std::size_t__len, flag_type__flags) [inline]
Assigns a new regular expression to a regex object from a C-style string containing a regular expression pattern.
Parameters:
__p A pointer to a C-style string containing a regular expression pattern.
__len The length of the regular expression pattern string.
__flags Syntax option flags.
Exceptions:
regex_error if p does not contain a valid regular expression pattern interpreted according to __flags. If regex_error is thrown, *this
remains unchanged.
Definition at line 582 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> template<typename _Ch_typeraits , typename _Alloc > basic_regex&
std::basic_regex< _Ch_type, _Rx_traits >::assign (const basic_string< _Ch_type, _Ch_typeraits, _Alloc > &__s, flag_type__flags =
ECMAScript) [inline]
Assigns a new regular expression to a regex object from a string containing a regular expression pattern.
Parameters:
__s A string containing a regular expression pattern.
__flags Syntax option flags.
Exceptions:
regex_error if __s does not contain a valid regular expression pattern interpreted according to __flags. If regex_error is thrown,
*this remains unchanged.
Definition at line 598 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::swap().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> template<typename _InputIterator > basic_regex& std::basic_regex<
_Ch_type, _Rx_traits >::assign (_InputIterator__first, _InputIterator__last, flag_type__flags = ECMAScript) [inline]
Assigns a new regular expression to a regex object.
Parameters:
__first The start of a range containing a valid regular expression.
__last The end of a range containing a valid regular expression.
__flags Syntax option flags.
Exceptions:
regex_error if p does not contain a valid regular expression pattern interpreted according to __flags. If regex_error is thrown, the
object remains unchanged.
Definition at line 621 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::assign
(initializer_list< _Ch_type >__l, flag_type__flags = ECMAScript) [inline]
Assigns a new regular expression to a regex object.
Parameters:
__l An initializer list representing a regular expression.
__flags Syntax option flags.
Exceptions:
regex_error if __l does not contain a valid regular expression pattern interpreted according to __flags. If regex_error is thrown, the
object remains unchanged.
Definition at line 637 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> flag_type std::basic_regex< _Ch_type, _Rx_traits >::flags () const
[inline]
Gets the flags used to construct the regular expression or in the last call to assign().
Definition at line 654 of file regex.h.
Referenced by std::basic_regex< _Ch_type, _Rx_traits >::operator=().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> locale_type std::basic_regex< _Ch_type, _Rx_traits >::getloc () const
[inline]
Gets the locale currently imbued in the regular expression object.
Definition at line 672 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> locale_type std::basic_regex< _Ch_type, _Rx_traits >::imbue
(locale_type__loc) [inline]
Imbues the regular expression object with the given locale.
Parameters:
__loc A locale.
Definition at line 664 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> unsigned int std::basic_regex< _Ch_type, _Rx_traits >::mark_count ()
const [inline]
Gets the number of marked subexpressions within the regular expression.
Definition at line 646 of file regex.h.
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::operator=
(const basic_regex< _Ch_type, _Rx_traits > &__rhs) [inline]
Assigns one regular expression to another.
Definition at line 492 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::operator=
(basic_regex< _Ch_type, _Rx_traits > &&__rhs) [inline], [noexcept]
Move-assigns one regular expression to another.
Definition at line 499 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> basic_regex& std::basic_regex< _Ch_type, _Rx_traits >::operator=
(const _Ch_type *__p) [inline]
Replaces a regular expression with a new one constructed from a C-style null-terminated string.
Parameters:
__p A pointer to the start of a null-terminated C-style string containing a regular expression.
Definition at line 510 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign(), and std::basic_regex< _Ch_type, _Rx_traits >::flags().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> template<typename _Ch_typeraits , typename _Alloc > basic_regex&
std::basic_regex< _Ch_type, _Rx_traits >::operator= (const basic_string< _Ch_type, _Ch_typeraits, _Alloc > &__s) [inline]
Replaces a regular expression with a new one constructed from a string.
Parameters:
__s A pointer to a string containing a regular expression.
Definition at line 521 of file regex.h.
References std::basic_regex< _Ch_type, _Rx_traits >::assign(), and std::basic_regex< _Ch_type, _Rx_traits >::flags().
template<typename _Ch_type, typename _Rx_traits = regex_traits<_Ch_type>> void std::basic_regex< _Ch_type, _Rx_traits >::swap (basic_regex<
_Ch_type, _Rx_traits > &__rhs) [inline]
Swaps the contents of two regular expression objects.
Parameters:
__rhs Another regular expression object.
Definition at line 682 of file regex.h.
References std::swap().
Referenced by std::basic_regex< _Ch_type, _Rx_traits >::assign(), and std::swap().
Author
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libstdc++ Tue Jun 10 2014 std::basic_regex< _Ch_type, _Rx_traits >(3)