libstdc++: std::__ctype_abstract_base< _CharT > Class Template Reference (original) (raw)
#include <[locale_facets.h](a00596%5Fsource.html)>
| Public Types | |
|---|---|
| typedef const int * | __to_type |
| typedef _CharT | char_type |
| typedef unsigned short | mask |
| Public Member Functions | |
|---|---|
| const char_type * | is (const char_type *__lo, const char_type *__hi, mask *__vec) const |
| bool | is (mask __m, char_type __c) 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 |
| const char_type * | tolower (char_type *__lo, const char_type *__hi) const |
| char_type | tolower (char_type __c) const |
| const char_type * | toupper (char_type *__lo, const char_type *__hi) const |
| char_type | toupper (char_type __c) 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 | blank |
| static const mask | cntrl |
| static const mask | digit |
| static const mask | graph |
| static const mask | lower |
| static const mask | |
| 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 const char_type * | do_is (const char_type *__lo, const char_type *__hi, mask *__vec) const =0 |
| virtual bool | do_is (mask __m, char_type __c) 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 const char_type * | do_tolower (char_type *__lo, const char_type *__hi) const =0 |
| virtual char_type | do_tolower (char_type __c) const =0 |
| virtual const char_type * | do_toupper (char_type *__lo, const char_type *__hi) const =0 |
| virtual char_type | do_toupper (char_type __c) 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) |
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 153 of file locale_facets.h.
◆ __to_type
| typedef const int* std::ctype_base::__to_type | inherited |
|---|
◆ char_type
template<typename _CharT >
◆ mask
| typedef unsigned short std::ctype_base::mask | inherited |
|---|
template<typename _CharT >
◆ ~__ctype_abstract_base()
template<typename _CharT >
◆ do_is() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
| __vec | Pointer to an array of mask storage. |
Returns
__hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
◆ do_is() [2/2]
template<typename _CharT >
◆ do_narrow() [1/2]
template<typename _CharT >
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
| __c | The char_type to convert. |
|---|---|
| __dfault | Char to return if conversion fails. |
Returns
The converted char.
Implemented in std::ctype< wchar_t >, and std::ctype< _CharT >.
Referenced by std::__ctype_abstract_base< _CharT >::narrow(), and std::__ctype_abstract_base< _CharT >::narrow().
◆ do_narrow() [2/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
| __dfault | Char to use if conversion fails. |
| __to | Pointer to the destination array. |
Returns
__hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
◆ do_scan_is()
template<typename _CharT >
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
| __m | The mask to compare against. |
|---|---|
| __lo | Pointer to start of range. |
| __hi | Pointer to end of range. |
Returns
Pointer to a matching char_type if found, else __hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
Referenced by std::__ctype_abstract_base< _CharT >::scan_is().
◆ do_scan_not()
template<typename _CharT >
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
| __m | The mask to compare against. |
|---|---|
| __lo | Pointer to start of range. |
| __hi | Pointer to end of range. |
Returns
Pointer to a non-matching char_type if found, else __hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
Referenced by std::__ctype_abstract_base< _CharT >::scan_not().
◆ do_tolower() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
Returns
__hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
◆ do_tolower() [2/2]
template<typename _CharT >
◆ do_toupper() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
Returns
__hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
◆ do_toupper() [2/2]
template<typename _CharT >
◆ do_widen() [1/2]
template<typename _CharT >
◆ do_widen() [2/2]
template<typename _CharT >
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
| __lo | Pointer to start range. |
|---|---|
| __hi | Pointer to end of range. |
| __to | Pointer to the destination array. |
Returns
__hi.
Implemented in std::ctype< _CharT >, and std::ctype< wchar_t >.
◆ is() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
| __vec | Pointer to an array of mask storage. |
Returns
__hi.
Definition at line 189 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_is().
◆ is() [2/2]
template<typename _CharT >
◆ narrow() [1/2]
template<typename _CharT >
◆ narrow() [2/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
| __dfault | Char to use if conversion fails. |
| __to | Pointer to the destination array. |
Returns
__hi.
Definition at line 356 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_narrow().
◆ scan_is()
template<typename _CharT >
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
| __m | The mask to compare against. |
|---|---|
| __lo | Pointer to start of range. |
| __hi | Pointer to end of range. |
Returns
Pointer to matching char_type if found, else __hi.
Definition at line 205 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_scan_is().
◆ scan_not()
template<typename _CharT >
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
| __m | The mask to compare against. |
|---|---|
| __lo | Pointer to first char in range. |
| __hi | Pointer to end of range. |
Returns
Pointer to non-matching char if found, else __hi.
Definition at line 221 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_scan_not().
◆ tolower() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
Returns
__hi.
Definition at line 279 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_tolower().
◆ tolower() [2/2]
template<typename _CharT >
◆ toupper() [1/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
Returns
__hi.
Definition at line 250 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_toupper().
◆ toupper() [2/2]
template<typename _CharT >
◆ widen() [1/2]
template<typename _CharT >
◆ widen() [2/2]
template<typename _CharT >
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
| __lo | Pointer to start of range. |
|---|---|
| __hi | Pointer to end of range. |
| __to | Pointer to the destination array. |
Returns
__hi.
Definition at line 315 of file locale_facets.h.
References std::__ctype_abstract_base< _CharT >::do_widen().
◆ alnum
| const mask std::ctype_base::alnum | staticinherited |
|---|
◆ alpha
| const mask std::ctype_base::alpha | staticinherited |
|---|
◆ blank
| const mask std::ctype_base::blank | staticinherited |
|---|
◆ cntrl
| const mask std::ctype_base::cntrl | staticinherited |
|---|
◆ digit
| const mask std::ctype_base::digit | staticinherited |
|---|
◆ graph
| const mask std::ctype_base::graph | staticinherited |
|---|
◆ lower
| const mask std::ctype_base::lower | staticinherited |
|---|
| const mask std::ctype_base::print | staticinherited |
|---|
◆ punct
| const mask std::ctype_base::punct | staticinherited |
|---|
◆ space
| const mask std::ctype_base::space | staticinherited |
|---|
◆ upper
| const mask std::ctype_base::upper | staticinherited |
|---|
◆ xdigit
| const mask std::ctype_base::xdigit | staticinherited |
|---|
The documentation for this class was generated from the following file: