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std::regex_traits
Langue: en
Version: 164195 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- template<typename _Ch_type > locale_type std::regex_traits< _Ch_type >::getloc () const [inline]
- template<typename _Ch_type > locale_type std::regex_traits< _Ch_type >::imbue (locale_type __loc) [inline]
- template<typename _Ch_type > static std::size_t std::regex_traits< _Ch_type >::length (const char_type * __p) [inline, static]
- template<typename _Ch_type > template<typename _Fwd_iter > char_class_type std::regex_traits< _Ch_type >::lookup_classname (_Fwd_iter __first, _Fwd_iter __last) const [inline]
- template<typename _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::lookup_collatename (_Fwd_iter __first, _Fwd_iter __last) const [inline]
- template<typename _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::transform (_Fwd_iter __first, _Fwd_iter __last) const [inline]
- template<typename _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::transform_primary (_Fwd_iter __first, _Fwd_iter __last) const [inline]
- template<typename _Ch_type > char_type std::regex_traits< _Ch_type >::translate (char_type __c) const [inline]
- template<typename _Ch_type > char_type std::regex_traits< _Ch_type >::translate_nocase (char_type __c) const [inline]
- Author
NAME
std::regex_traits - Describes aspects of a regular expression.SYNOPSIS
Public Types
typedef std::ctype_base::mask char_class_type
typedef _Ch_type char_type
typedef std::locale locale_type
typedef std::basic_string< char_type > string_type
Public Member Functions
locale_type getloc () const
locale_type imbue (locale_type __loc)
bool isctype (_Ch_type __c, char_class_type __f) const
template<typename _Fwd_iter > char_class_type lookup_classname (_Fwd_iter __first, _Fwd_iter __last) const
template<typename _Fwd_iter > string_type lookup_collatename (_Fwd_iter __first, _Fwd_iter __last) const
regex_traits ()
template<typename _Fwd_iter > string_type transform (_Fwd_iter __first, _Fwd_iter __last) const
template<typename _Fwd_iter > string_type transform_primary (_Fwd_iter __first, _Fwd_iter __last) const
char_type translate (char_type __c) const
char_type translate_nocase (char_type __c) const
int value (_Ch_type __ch, int __radix) const
Static Public Member Functions
static std::size_t length (const char_type *__p)
Protected Attributes
locale_type _M_locale
Detailed Description
template<typename _Ch_type> struct std::regex_traits< _Ch_type >
Describes aspects of a regular expression.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.
Definition at line 432 of file tr1_impl/regex.
Constructor & Destructor Documentation
template<typename _Ch_type > std::regex_traits< _Ch_type >::regex_traits () [inline]
Constructs a default traits object.
Definition at line 444 of file tr1_impl/regex.
Member Function Documentation
template<typename _Ch_type > locale_type std::regex_traits< _Ch_type >::getloc () const [inline]
Gets a copy of the current locale in use by the regex_traits object.
Definition at line 644 of file tr1_impl/regex.
template<typename _Ch_type > locale_type std::regex_traits< _Ch_type >::imbue (locale_type __loc) [inline]
Imbues the regex_traits object with a copy of a new locale.
Parameters:
- 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.
Definition at line 633 of file tr1_impl/regex.
template<typename _Ch_type > static std::size_t std::regex_traits< _Ch_type >::length (const char_type * __p) [inline, static]
Gives the length of a C-style string starting at __p.
Parameters:
- __p a pointer to the start of a character sequence.
Returns:
- the number of characters between *__p and the first default-initialized value of type char_type. In other words, uses the C-string algorithm for determining the length of a sequence of characters.
Definition at line 458 of file tr1_impl/regex.
References std::basic_string< _CharT, _Traits, _Alloc >::length().
template<typename _Ch_type > template<typename _Fwd_iter > char_class_type std::regex_traits< _Ch_type >::lookup_classname (_Fwd_iter __first, _Fwd_iter __last) const [inline]
Maps one or more characters to a named character classification.
Parameters:
- first beginning of the character sequence.
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
- •
- •
- punct
- •
- space
- •
- upper
- •
- xdigit
Todo
- Implement this function.
Referenced by std::regex_traits< _Ch_type >::isctype().
template<typename _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::lookup_collatename (_Fwd_iter __first, _Fwd_iter __last) const [inline]
Gets a collation element by name.
Parameters:
- first beginning of the collation element name.
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 _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::transform (_Fwd_iter __first, _Fwd_iter __last) const [inline]
Gets a sort key for a character sequence.
Parameters:
- first beginning of the character sequence.
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.
Exceptions:
- std::bad_cast if the current locale does not have a collate facet.
Definition at line 511 of file tr1_impl/regex.
References std::basic_string< _CharT, _Traits, _Alloc >::data(), std::basic_string< _CharT, _Traits, _Alloc >::size(), std::collate< _CharT >::transform(), and std::use_facet().
template<typename _Ch_type > template<typename _Fwd_iter > string_type std::regex_traits< _Ch_type >::transform_primary (_Fwd_iter __first, _Fwd_iter __last) const [inline]
Dunno.
Parameters:
- first beginning of the character sequence.
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 _Ch_type > char_type std::regex_traits< _Ch_type >::translate (char_type __c) const [inline]
Performs the identity translation.
Parameters:
- c A character to the locale-specific character set.
Returns:
- c.
Definition at line 469 of file tr1_impl/regex.
template<typename _Ch_type > char_type std::regex_traits< _Ch_type >::translate_nocase (char_type __c) const [inline]
Translates a character into a case-insensitive equivalent.
Parameters:
- c A character to the locale-specific character set.
Returns:
- the locale-specific lower-case equivalent of c.
Exceptions:
- std::bad_cast if the imbued locale does not support the ctype facet.
Definition at line 482 of file tr1_impl/regex.
References std::tolower(), and std::use_facet().
Author
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Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre