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std::__ctype_abstract_base< _CharT > Class Template Referenceabstract
Inheritance diagram for std::__ctype_abstract_base< _CharT >:
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Public Types

typedef const int * __to_type
 
typedef _CharT char_type
 
typedef unsigned short mask
 

Public Member Functions

bool is (mask __m, char_type __c) const
 
const char_type * is (const char_type *__lo, const char_type *__hi, mask *__vec) const
 
char narrow (char_type __c, char __dfault) const
 
const char_type * narrow (const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const
 
const char_type * scan_is (mask __m, const char_type *__lo, const char_type *__hi) const
 
const char_type * scan_not (mask __m, const char_type *__lo, const char_type *__hi) const
 
char_type tolower (char_type __c) const
 
const char_type * tolower (char_type *__lo, const char_type *__hi) const
 
char_type toupper (char_type __c) const
 
const char_type * toupper (char_type *__lo, const char_type *__hi) const
 
char_type widen (char __c) const
 
const char * widen (const char *__lo, const char *__hi, char_type *__to) const
 

Static Public Attributes

static const mask alnum
 
static const mask alpha
 
static const mask cntrl
 
static const mask digit
 
static const mask graph
 
static const mask lower
 
static const mask print
 
static const mask punct
 
static const mask space
 
static const mask upper
 
static const mask xdigit
 

Protected Member Functions

 __ctype_abstract_base (size_t __refs=0)
 
virtual bool do_is (mask __m, char_type __c) const =0
 
virtual const char_type * do_is (const char_type *__lo, const char_type *__hi, mask *__vec) const =0
 
virtual char do_narrow (char_type __c, char __dfault) const =0
 
virtual const char_type * do_narrow (const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const =0
 
virtual const char_type * do_scan_is (mask __m, const char_type *__lo, const char_type *__hi) const =0
 
virtual const char_type * do_scan_not (mask __m, const char_type *__lo, const char_type *__hi) const =0
 
virtual char_type do_tolower (char_type __c) const =0
 
virtual const char_type * do_tolower (char_type *__lo, const char_type *__hi) const =0
 
virtual char_type do_toupper (char_type __c) const =0
 
virtual const char_type * do_toupper (char_type *__lo, const char_type *__hi) const =0
 
virtual char_type do_widen (char __c) const =0
 
virtual const char * do_widen (const char *__lo, const char *__hi, char_type *__to) const =0
 

Static Protected Member Functions

static __c_locale _S_clone_c_locale (__c_locale &__cloc) throw ()
 
static void _S_create_c_locale (__c_locale &__cloc, const char *__s, __c_locale __old=0)
 
static void _S_destroy_c_locale (__c_locale &__cloc)
 
static __c_locale _S_get_c_locale ()
 
static const char * _S_get_c_name () throw ()
 
static __c_locale _S_lc_ctype_c_locale (__c_locale __cloc, const char *__s)
 

Detailed Description

template<typename _CharT>
class std::__ctype_abstract_base< _CharT >

Common base for ctype facet.

This template class provides implementations of the public functions that forward to the protected virtual functions.

This template also provides abstract stubs for the protected virtual functions.

Definition at line 143 of file locale_facets.h.

Member Typedef Documentation

template<typename _CharT>
typedef _CharT std::__ctype_abstract_base< _CharT >::char_type

Typedef for the template parameter.

Definition at line 148 of file locale_facets.h.

Member Function Documentation

template<typename _CharT>
virtual bool std::__ctype_abstract_base< _CharT >::do_is ( mask  __m,
char_type  __c 
) const
protectedpure virtual

Test char_type classification.

This function finds a mask M for c and compares it to mask m.

do_is() is a hook for a derived facet to change the behavior of classifying. do_is() must always return the same result for the same input.

Parameters
__cThe char_type to find the mask of.
__mThe mask to compare against.
Returns
(M & __m) != 0.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::is().

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_is ( const char_type *  __lo,
const char_type *  __hi,
mask *  __vec 
) const
protectedpure virtual

Return a mask array.

This function finds the mask for each char_type in the range [lo,hi) and successively writes it to vec. vec must have as many elements as the input.

do_is() is a hook for a derived facet to change the behavior of classifying. do_is() must always return the same result for the same input.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
__vecPointer to an array of mask storage.
Returns
__hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

template<typename _CharT>
virtual char std::__ctype_abstract_base< _CharT >::do_narrow ( char_type  __c,
char  __dfault 
) const
protectedpure virtual

Narrow char_type to char.

This virtual function converts the argument to char using the simplest reasonable transformation. If the conversion fails, dfault is returned instead.

do_narrow() is a hook for a derived facet to change the behavior of narrowing. do_narrow() must always return the same result for the same input.

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__cThe char_type to convert.
__dfaultChar to return if conversion fails.
Returns
The converted char.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::narrow().

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_narrow ( const char_type *  __lo,
const char_type *  __hi,
char  __dfault,
char *  __to 
) const
protectedpure virtual

Narrow char_type array to char.

This virtual function converts each char_type in the range [__lo,__hi) to char using the simplest reasonable transformation and writes the results to the destination array. For any element in the input that cannot be converted, __dfault is used instead.

do_narrow() is a hook for a derived facet to change the behavior of narrowing. do_narrow() must always return the same result for the same input.

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
__dfaultChar to use if conversion fails.
__toPointer to the destination array.
Returns
__hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_scan_is ( mask  __m,
const char_type *  __lo,
const char_type *  __hi 
) const
protectedpure virtual

Find char_type matching mask.

This function searches for and returns the first char_type c in [__lo,__hi) for which is(__m,c) is true.

do_scan_is() is a hook for a derived facet to change the behavior of match searching. do_is() must always return the same result for the same input.

Parameters
__mThe mask to compare against.
__loPointer to start of range.
__hiPointer to end of range.
Returns
Pointer to a matching char_type if found, else __hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::scan_is().

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_scan_not ( mask  __m,
const char_type *  __lo,
const char_type *  __hi 
) const
protectedpure virtual

Find char_type not matching mask.

This function searches for and returns a pointer to the first char_type c of [lo,hi) for which is(m,c) is false.

do_scan_is() is a hook for a derived facet to change the behavior of match searching. do_is() must always return the same result for the same input.

Parameters
__mThe mask to compare against.
__loPointer to start of range.
__hiPointer to end of range.
Returns
Pointer to a non-matching char_type if found, else __hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::scan_not().

template<typename _CharT>
virtual char_type std::__ctype_abstract_base< _CharT >::do_tolower ( char_type  __c) const
protectedpure virtual

Convert to lowercase.

This virtual function converts the argument to lowercase if possible. If not possible (for example, '2'), returns the argument.

do_tolower() is a hook for a derived facet to change the behavior of lowercasing. do_tolower() must always return the same result for the same input.

Parameters
__cThe char_type to convert.
Returns
The lowercase char_type if convertible, else __c.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::tolower().

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_tolower ( char_type *  __lo,
const char_type *  __hi 
) const
protectedpure virtual

Convert array to lowercase.

This virtual function converts each char_type in the range [__lo,__hi) to lowercase if possible. Other elements remain untouched.

do_tolower() is a hook for a derived facet to change the behavior of lowercasing. do_tolower() must always return the same result for the same input.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
Returns
__hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

template<typename _CharT>
virtual char_type std::__ctype_abstract_base< _CharT >::do_toupper ( char_type  __c) const
protectedpure virtual

Convert to uppercase.

This virtual function converts the char_type argument to uppercase if possible. If not possible (for example, '2'), returns the argument.

do_toupper() is a hook for a derived facet to change the behavior of uppercasing. do_toupper() must always return the same result for the same input.

Parameters
__cThe char_type to convert.
Returns
The uppercase char_type if convertible, else __c.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::toupper().

template<typename _CharT>
virtual const char_type* std::__ctype_abstract_base< _CharT >::do_toupper ( char_type *  __lo,
const char_type *  __hi 
) const
protectedpure virtual

Convert array to uppercase.

This virtual function converts each char_type in the range [__lo,__hi) to uppercase if possible. Other elements remain untouched.

do_toupper() is a hook for a derived facet to change the behavior of uppercasing. do_toupper() must always return the same result for the same input.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
Returns
__hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

template<typename _CharT>
virtual char_type std::__ctype_abstract_base< _CharT >::do_widen ( char  __c) const
protectedpure virtual

Widen char.

This virtual function converts the char to char_type using the simplest reasonable transformation.

do_widen() is a hook for a derived facet to change the behavior of widening. do_widen() must always return the same result for the same input.

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__cThe char to convert.
Returns
The converted char_type

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

Referenced by std::__ctype_abstract_base< wchar_t >::widen().

template<typename _CharT>
virtual const char* std::__ctype_abstract_base< _CharT >::do_widen ( const char *  __lo,
const char *  __hi,
char_type *  __to 
) const
protectedpure virtual

Widen char array.

This function converts each char in the input to char_type using the simplest reasonable transformation.

do_widen() is a hook for a derived facet to change the behavior of widening. do_widen() must always return the same result for the same input.

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__loPointer to start range.
__hiPointer to end of range.
__toPointer to the destination array.
Returns
__hi.

Implemented in std::ctype< wchar_t >, std::ctype< _CharT >, and std::ctype< char_type >.

template<typename _CharT>
bool std::__ctype_abstract_base< _CharT >::is ( mask  __m,
char_type  __c 
) const
inline

Test char_type classification.

This function finds a mask M for __c and compares it to mask __m. It does so by returning the value of ctype<char_type>::do_is().

Parameters
__cThe char_type to compare the mask of.
__mThe mask to compare against.
Returns
(M & __m) != 0.

Definition at line 162 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::is ( const char_type *  __lo,
const char_type *  __hi,
mask *  __vec 
) const
inline

Return a mask array.

This function finds the mask for each char_type in the range [lo,hi) and successively writes it to vec. vec must have as many elements as the char array. It does so by returning the value of ctype<char_type>::do_is().

Parameters
__loPointer to start of range.
__hiPointer to end of range.
__vecPointer to an array of mask storage.
Returns
__hi.

Definition at line 179 of file locale_facets.h.

template<typename _CharT>
char std::__ctype_abstract_base< _CharT >::narrow ( char_type  __c,
char  __dfault 
) const
inline

Narrow char_type to char.

This function converts the char_type to char using the simplest reasonable transformation. If the conversion fails, dfault is returned instead. It does so by returning ctype<char_type>::do_narrow(__c).

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__cThe char_type to convert.
__dfaultChar to return if conversion fails.
Returns
The converted char.

Definition at line 324 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::narrow ( const char_type *  __lo,
const char_type *  __hi,
char  __dfault,
char *  __to 
) const
inline

Narrow array to char array.

This function converts each char_type in the input to char using the simplest reasonable transformation and writes the results to the destination array. For any char_type in the input that cannot be converted, dfault is used instead. It does so by returning ctype<char_type>::do_narrow(__lo, __hi, __dfault, __to).

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
__dfaultChar to use if conversion fails.
__toPointer to the destination array.
Returns
__hi.

Definition at line 346 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::scan_is ( mask  __m,
const char_type *  __lo,
const char_type *  __hi 
) const
inline

Find char_type matching a mask.

This function searches for and returns the first char_type c in [lo,hi) for which is(m,c) is true. It does so by returning ctype<char_type>::do_scan_is().

Parameters
__mThe mask to compare against.
__loPointer to start of range.
__hiPointer to end of range.
Returns
Pointer to matching char_type if found, else __hi.

Definition at line 195 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::scan_not ( mask  __m,
const char_type *  __lo,
const char_type *  __hi 
) const
inline

Find char_type not matching a mask.

This function searches for and returns the first char_type c in [lo,hi) for which is(m,c) is false. It does so by returning ctype<char_type>::do_scan_not().

Parameters
__mThe mask to compare against.
__loPointer to first char in range.
__hiPointer to end of range.
Returns
Pointer to non-matching char if found, else __hi.

Definition at line 211 of file locale_facets.h.

template<typename _CharT>
char_type std::__ctype_abstract_base< _CharT >::tolower ( char_type  __c) const
inline

Convert to lowercase.

This function converts the argument to lowercase if possible. If not possible (for example, '2'), returns the argument. It does so by returning ctype<char_type>::do_tolower(c).

Parameters
__cThe char_type to convert.
Returns
The lowercase char_type if convertible, else __c.

Definition at line 254 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::tolower ( char_type *  __lo,
const char_type *  __hi 
) const
inline

Convert array to lowercase.

This function converts each char_type in the range [__lo,__hi) to lowercase if possible. Other elements remain untouched. It does so by returning ctype<char_type>:: do_tolower(__lo, __hi).

Parameters
__loPointer to start of range.
__hiPointer to end of range.
Returns
__hi.

Definition at line 269 of file locale_facets.h.

template<typename _CharT>
char_type std::__ctype_abstract_base< _CharT >::toupper ( char_type  __c) const
inline

Convert to uppercase.

This function converts the argument to uppercase if possible. If not possible (for example, '2'), returns the argument. It does so by returning ctype<char_type>::do_toupper().

Parameters
__cThe char_type to convert.
Returns
The uppercase char_type if convertible, else __c.

Definition at line 225 of file locale_facets.h.

template<typename _CharT>
const char_type* std::__ctype_abstract_base< _CharT >::toupper ( char_type *  __lo,
const char_type *  __hi 
) const
inline

Convert array to uppercase.

This function converts each char_type in the range [lo,hi) to uppercase if possible. Other elements remain untouched. It does so by returning ctype<char_type>:: do_toupper(lo, hi).

Parameters
__loPointer to start of range.
__hiPointer to end of range.
Returns
__hi.

Definition at line 240 of file locale_facets.h.

template<typename _CharT>
char_type std::__ctype_abstract_base< _CharT >::widen ( char  __c) const
inline

Widen char to char_type.

This function converts the char argument to char_type using the simplest reasonable transformation. It does so by returning ctype<char_type>::do_widen(c).

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__cThe char to convert.
Returns
The converted char_type.

Definition at line 286 of file locale_facets.h.

template<typename _CharT>
const char* std::__ctype_abstract_base< _CharT >::widen ( const char *  __lo,
const char *  __hi,
char_type *  __to 
) const
inline

Widen array to char_type.

This function converts each char in the input to char_type using the simplest reasonable transformation. It does so by returning ctype<char_type>::do_widen(c).

Note: this is not what you want for codepage conversions. See codecvt for that.

Parameters
__loPointer to start of range.
__hiPointer to end of range.
__toPointer to the destination array.
Returns
__hi.

Definition at line 305 of file locale_facets.h.

The documentation for this class was generated from the following file: