libstdc++
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Public Types | |
typedef const int * | __to_type |
typedef _CharT | char_type |
typedef __ctype_abstract_base< _CharT >::mask | mask |
Public Member Functions | |
ctype (size_t __refs=0) | |
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 | blank |
static const mask | cntrl |
static const mask | digit |
static const mask | graph |
static locale::id | id |
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 | |
virtual bool | do_is (mask __m, char_type __c) const |
virtual const char_type * | do_is (const char_type *__lo, const char_type *__hi, mask *__vec) const |
virtual char | do_narrow (char_type, char __dfault) const |
virtual const char_type * | do_narrow (const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const |
virtual const char_type * | do_scan_is (mask __m, const char_type *__lo, const char_type *__hi) const |
virtual const char_type * | do_scan_not (mask __m, const char_type *__lo, const char_type *__hi) const |
virtual char_type | do_tolower (char_type __c) const |
virtual const char_type * | do_tolower (char_type *__lo, const char_type *__hi) const |
virtual char_type | do_toupper (char_type __c) const |
virtual const char_type * | do_toupper (char_type *__lo, const char_type *__hi) const |
virtual char_type | do_widen (char __c) const |
virtual const char * | do_widen (const char *__lo, const char *__hi, char_type *__dest) const |
Primary class template ctype facet.
This template class defines classification and conversion functions for character sets. It wraps cctype functionality. Ctype gets used by streams for many I/O operations.
This template provides the protected virtual functions the developer will have to replace in a derived class or specialization to make a working facet. The public functions that access them are defined in __ctype_abstract_base, to allow for implementation flexibility. See ctype<wchar_t> for an example. The functions are documented in __ctype_abstract_base.
Note: implementations are provided for all the protected virtual functions, but will likely not be useful.
Definition at line 612 of file locale_facets.h.
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protectedvirtual |
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.
__c | The char_type to find the mask of. |
__m | The mask to compare against. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
__vec | Pointer to an array of mask storage. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__c | The char_type to convert. |
__dfault | Char to return if conversion fails. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__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. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__m | The mask to compare against. |
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__m | The mask to compare against. |
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__c | The char_type to convert. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__c | The char_type to convert. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__c | The char to convert. |
Implements std::__ctype_abstract_base< _CharT >.
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protectedvirtual |
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.
__lo | Pointer to start range. |
__hi | Pointer to end of range. |
__to | Pointer to the destination array. |
Implements std::__ctype_abstract_base< _CharT >.
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inlineinherited |
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().
__c | The char_type to compare the mask of. |
__m | The mask to compare against. |
Definition at line 169 of file locale_facets.h.
Referenced by std::time_get< _CharT, _InIter >::get(), std::ctype< char >::is(), std::isalnum(), std::isalpha(), std::isblank(), std::iscntrl(), std::isdigit(), std::isgraph(), std::islower(), std::isprint(), std::ispunct(), std::isspace(), std::isupper(), std::isxdigit(), and std::basic_istream< _CharT, _Traits >::sentry::sentry().
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inlineinherited |
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().
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
__vec | Pointer to an array of mask storage. |
Definition at line 186 of file locale_facets.h.
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inlineinherited |
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.
__c | The char_type to convert. |
__dfault | Char to return if conversion fails. |
Definition at line 331 of file locale_facets.h.
Referenced by std::time_get< _CharT, _InIter >::do_date_order(), std::time_get< _CharT, _InIter >::get(), and std::time_put< _CharT, _OutIter >::put().
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inlineinherited |
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.
__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. |
Definition at line 353 of file locale_facets.h.
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inlineinherited |
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().
__m | The mask to compare against. |
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Definition at line 202 of file locale_facets.h.
Referenced by std::ctype< char >::is().
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inlineinherited |
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().
__m | The mask to compare against. |
__lo | Pointer to first char in range. |
__hi | Pointer to end of range. |
Definition at line 218 of file locale_facets.h.
Referenced by std::money_get< _CharT, _InIter >::do_get(), and std::ctype< char >::scan_is().
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inlineinherited |
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).
__c | The char_type to convert. |
Definition at line 261 of file locale_facets.h.
Referenced by std::time_get< _CharT, _InIter >::get(), and std::tolower().
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inlineinherited |
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).
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Definition at line 276 of file locale_facets.h.
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inlineinherited |
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().
__c | The char_type to convert. |
Definition at line 232 of file locale_facets.h.
Referenced by std::time_get< _CharT, _InIter >::do_date_order(), std::time_get< _CharT, _InIter >::get(), and std::toupper().
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inlineinherited |
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).
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
Definition at line 247 of file locale_facets.h.
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inlineinherited |
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.
__c | The char to convert. |
Definition at line 293 of file locale_facets.h.
Referenced by std::time_get< _CharT, _InIter >::do_get(), std::money_get< _CharT, _InIter >::do_get(), std::num_get< _CharT, _InIter >::do_get(), std::time_put< _CharT, _OutIter >::do_put(), std::money_put< _CharT, _OutIter >::do_put(), and std::num_put< _CharT, _OutIter >::do_put().
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inlineinherited |
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.
__lo | Pointer to start of range. |
__hi | Pointer to end of range. |
__to | Pointer to the destination array. |
Definition at line 312 of file locale_facets.h.
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static |
The facet id for ctype<char_type>
Definition at line 620 of file locale_facets.h.