std::sub_match< _BiIter >(3cxx)

NAME
std::sub_match< _BiIter >

SYNOPSIS

Inherits std::pair< _BiIter, _BiIter >.

  Public Types

typedef __iter_traits::difference_type difference_type
typedef _BiIter first_type
The type of the first member.
typedef _BiIter iterator
typedef _BiIter second_type
The type of the second member.
typedef basic_string< value_type > string_type
typedef __iter_traits::value_type value_type

  Public Member Functions

int compare (const sub_match &__s) const
Compares this and another matched sequence.
difference_type length () const noexcept
Gets the length of the matching sequence.
operator string_type () const
Gets the matching sequence as a string.
string_type str () const
Gets the matching sequence as a string.
constexpr void swap (pair &__p) noexcept(__and_< __is_nothrow_swappable< _BiIter >, __is_nothrow_swappable< _BiIter >>::value)
Swap the first members and then the second members.
void swap (sub_match &__s) noexcept(__is_nothrow_swappable< _BiIter >::value)
Swap the values of two sub_match objects.

int compare (const string_type &__s) const
Compares this sub_match to a string.
int compare (const value_type *__s) const
Compares this sub_match to a string.

  Public Attributes

_BiIter first
The first member.
bool matched
_BiIter second
The second member.

  Related Functions
(Note that these are not member functions.)
constexpr pair< typename __decay_and_strip< _BiIter >::__type, typename __decay_and_strip< _BiIter >::__type > make_pair (_BiIter &&__x, _BiIter &&__y)
A convenience wrapper for creating a pair from two objects.

template<typename _BiIter > bool operator== (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the equivalence of two regular expression submatches.
template<typename _BiIter > bool operator!= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the inequivalence of two regular expression submatches.
template<typename _BiIter > bool operator< (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches.
template<typename _BiIter > bool operator<= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches.
template<typename _BiIter > bool operator>= (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches.
template<typename _BiIter > bool operator> (const sub_match< _BiIter > &__lhs, const sub_match< _BiIter > &__rhs)
Tests the ordering of two regular expression submatches.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator== (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator!= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator< (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator> (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator>= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator<= (const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a string and a regular expression submatch.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator== (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the equivalence of a regular expression submatch and a string.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator!= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the inequivalence of a regular expression submatch and a string.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator< (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator> (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator>= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string.
template<typename _Bi_iter , typename _Ch_traits , typename _Ch_alloc > bool operator<= (const sub_match< _Bi_iter > &__lhs, const __sub_match_string< _Bi_iter, _Ch_traits, _Ch_alloc > &__rhs)
Tests the ordering of a regular expression submatch and a string.
template<typename _Bi_iter > bool operator== (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator!= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator< (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator> (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator>= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator<= (typename iterator_traits< _Bi_iter >::value_type const *__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a C string and a regular expression submatch.
template<typename _Bi_iter > bool operator== (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the equivalence of a regular expression submatch and a C string.
template<typename _Bi_iter > bool operator!= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the inequivalence of a regular expression submatch and a string.
template<typename _Bi_iter > bool operator< (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string.
template<typename _Bi_iter > bool operator> (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string.
template<typename _Bi_iter > bool operator>= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string.
template<typename _Bi_iter > bool operator<= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const *__rhs)
Tests the ordering of a regular expression submatch and a C string.
template<typename _Bi_iter > bool operator== (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the equivalence of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator!= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the inequivalence of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator< (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator> (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator>= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator<= (typename iterator_traits< _Bi_iter >::value_type const &__lhs, const sub_match< _Bi_iter > &__rhs)
Tests the ordering of a character and a regular expression submatch.
template<typename _Bi_iter > bool operator== (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the equivalence of a regular expression submatch and a character.
template<typename _Bi_iter > bool operator!= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the inequivalence of a regular expression submatch and a character.
template<typename _Bi_iter > bool operator< (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character.
template<typename _Bi_iter > bool operator> (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character.
template<typename _Bi_iter > bool operator>= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character.
template<typename _Bi_iter > bool operator<= (const sub_match< _Bi_iter > &__lhs, typename iterator_traits< _Bi_iter >::value_type const &__rhs)
Tests the ordering of a regular expression submatch and a character.
template<typename _Ch_type , typename _Ch_traits , typename _Bi_iter > basic_ostream< _Ch_type, _Ch_traits > & operator<< (basic_ostream< _Ch_type, _Ch_traits > &__os, const sub_match< _Bi_iter > &__m)
Inserts a matched string into an output stream.

constexpr enable_if< __and_< __is_swappable< _BiIter >, __is_swappable< _BiIter > >::value >::type swap (pair< _BiIter, _BiIter > &__x, pair< _BiIter, _BiIter > &__y) noexcept(noexcept(__x.swap(__y)))
constexpr bool operator== (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
Two pairs of the same type are equal iff their members are equal.
constexpr bool operator< (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
constexpr bool operator!= (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
Uses operator== to find the result.
constexpr bool operator> (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
Uses operator< to find the result.
constexpr bool operator<= (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
Uses operator< to find the result.
constexpr bool operator>= (const pair< _BiIter, _BiIter > &__x, const pair< _BiIter, _BiIter > &__y)
Uses operator< to find the result.

Detailed Description

  template<typename _BiIter>
class std::sub_match< _BiIter >" 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.

Member Typedef Documentation

  typedef _BiIter std::pair< _BiIter , _BiIter >::first_type [inherited]

The type of the first member.

  typedef _BiIter std::pair< _BiIter , _BiIter >::second_type [inherited]

The type of the second member.

Member Function Documentation

  template<typename _BiIter > int std::sub_match< _BiIter >::compare (const string_type & __s) const [inline]

Compares this sub_match to a string.

Parameters
    __s A string to compare to this sub_match.

Return values
    negative This matched sequence will collate before __s.
    zero This matched sequence is equivalent to __s.
    positive This matched sequence will collate after __s.

  template<typename _BiIter > int std::sub_match< _BiIter >::compare (const sub_match< _BiIter > & __s) const [inline]

Compares this and another matched sequence.

Parameters
    __s Another matched sequence to compare to this one.

Return values
    negative This matched sequence will collate before __s.
    zero This matched sequence is equivalent to __s.
    positive This matched sequence will collate after __s.

Referenced by std::sub_match< _BiIter >::operator!=(), std::sub_match< _BiIter >::operator<(), std::sub_match< _BiIter >::operator<=(), std::sub_match< _BiIter >::operator==(), std::sub_match< _BiIter >::operator>(), and std::sub_match< _BiIter >::operator>=().

  template<typename _BiIter > int std::sub_match< _BiIter >::compare (const value_type * __s) const [inline]

Compares this sub_match to a string.

Parameters
    __s A string to compare to this sub_match.

Return values
    negative This matched sequence will collate before __s.
    zero This matched sequence is equivalent to __s.
    positive This matched sequence will collate after __s.

  template<typename _BiIter > difference_type std::sub_match< _BiIter >::length () const [inline], [noexcept]

Gets the length of the matching sequence.

References std::distance(), std::pair< _BiIter, _BiIter >::first, and std::pair< _BiIter, _BiIter >::second.

  template<typename _BiIter > std::sub_match< _BiIter >::operator string_type () const [inline]

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.

References std::sub_match< _BiIter >::str().

  template<typename _BiIter > string_type std::sub_match< _BiIter >::str () const [inline]

Gets the matching sequence as a string.

Returns
    the matching sequence as a string.

References std::pair< _BiIter, _BiIter >::first, and std::pair< _BiIter, _BiIter >::second.

Referenced by std::sub_match< _BiIter >::operator string_type().

  constexpr void std::pair< _BiIter , _BiIter >::swap (pair< _BiIter, _BiIter > & __p) [inline], [constexpr], [noexcept], [inherited]

Swap the first members and then the second members.

  template<typename _BiIter > void std::sub_match< _BiIter >::swap (sub_match< _BiIter > & __s) [inline], [noexcept]

Swap the values of two sub_match objects.

References std::swap(), and std::pair< _T1, _T2 >::swap().

Friends And Related Function Documentation

  constexpr pair< typename __decay_and_strip< _BiIter >::__type, typename __decay_and_strip< _BiIter >::__type > make_pair (_BiIter && __x, _BiIter && __y) [related]

A convenience wrapper for creating a pair from two objects.

Parameters
    __x The first object.
    __y The second object.

Returns
    A newly-constructed pair<> object of the appropriate type.

The C++98 standard says the objects are passed by reference-to-const, but C++03 says they are passed by value (this was LWG issue #181).

Since C++11 they have been passed by forwarding reference and then forwarded to the new members of the pair. To create a pair with a member of reference type, pass a reference_wrapper to this function.

  constexpr bool operator!= (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]

Uses operator== to find the result.

  constexpr bool operator< (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]
Defines a lexicographical order for pairs.

For two pairs of the same type, P is ordered before Q if P.first is less than Q.first, or if P.first and Q.first are equivalent (neither is less than the other) and P.second is less than Q.second.

  constexpr bool operator<= (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]

Uses operator< to find the result.

  constexpr bool operator== (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]

Two pairs of the same type are equal iff their members are equal.

  constexpr bool operator> (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]

Uses operator< to find the result.

  constexpr bool operator>= (const pair< _BiIter , _BiIter > & __x, const pair< _BiIter , _BiIter > & __y) [related]

Uses operator< to find the result.

  constexpr enable_if< __and_< __is_swappable< _BiIter >, __is_swappable< _BiIter > >::value >::type swap (pair< _BiIter , _BiIter > & __x, pair< _BiIter , _BiIter > & __y) [related]
Swap overload for pairs. Calls std::pair::swap().

Note
    This std::swap overload is not declared in C++03 mode, which has performance implications, e.g. see https://gcc.gnu.org/PR38466

Member Data Documentation

  _BiIter std::pair< _BiIter , _BiIter >::first [inherited]

The first member.

  _BiIter std::pair< _BiIter , _BiIter >::second [inherited]

The second member.

Author

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