Inheritance diagram for std::ctype< char >:

[legend]

Public Types
typedef const int *	__to_type

typedef char	char_type

typedef unsigned short	mask

Public Member Functions
	ctype (__c_locale __cloc, const mask *__table=0, bool __del=false, size_t __refs=0)

	ctype (const mask *__table=0, bool __del=false, size_t __refs=0)

const char *	is (const char __lo, const char __hi, mask *__vec) const

bool	is (mask __m, char __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 *	scan_is (mask __m, const char __lo, const char __hi) const

const char *	scan_not (mask __m, const char __lo, const char __hi) const

const mask *	table () const throw ()

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 Member Functions
static const mask *	classic_table () throw ()

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	print

static const mask	punct

static const mask	space

static const size_t	table_size

static const mask	upper

static const mask	xdigit

Protected Member Functions
virtual	~ctype ()

virtual char	do_narrow (char_type __c, 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_tolower (char_type __lo, const char_type __hi) const

virtual char_type	do_tolower (char_type __c) const

virtual const char_type *	do_toupper (char_type __lo, const char_type __hi) const

virtual char_type	do_toupper (char_type __c) const

virtual char_type	do_widen (char __c) const

virtual const char *	do_widen (const char __lo, const char __hi, char_type *__to) const

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)

Protected Attributes
__c_locale	_M_c_locale_ctype

bool	_M_del

char	_M_narrow [1+static_cast< unsigned char >(-1)]

char	_M_narrow_ok

const mask *	_M_table

__to_type	_M_tolower

__to_type	_M_toupper

char	_M_widen [1+static_cast< unsigned char >(-1)]

char	_M_widen_ok

Detailed Description

The ctype<char> specialization.

This class defines classification and conversion functions for the char type. It gets used by char streams for many I/O operations. The char specialization provides a number of optimizations as well.

Definition at line 681 of file locale_facets.h.

Member Typedef Documentation

◆ char_type

typedef char std::ctype< char >::char_type

Typedef for the template parameter char.

Definition at line 686 of file locale_facets.h.

Constructor & Destructor Documentation

◆ ctype() [1/2]

std::ctype< char >::ctype	(	const mask *	__table = `0`,
		bool	__del = `false`,
		size_t	__refs = `0`
	)

explicit

Constructor performs initialization.

This is the constructor provided by the standard.

Parameters

__table	If non-zero, table is used as the per-char mask. Else classic_table() is used.
__del	If true, passes ownership of table to this facet.
__refs	Passed to the base facet class.

◆ ctype() [2/2]

std::ctype< char >::ctype	(	__c_locale	__cloc,
		const mask *	__table = `0`,
		bool	__del = `false`,
		size_t	__refs = `0`
	)

explicit

Constructor performs static initialization.

This constructor is used to construct the initial C locale facet.

Parameters

__cloc	Handle to C locale data.
__table	If non-zero, table is used as the per-char mask.
__del	If true, passes ownership of table to this facet.
__refs	Passed to the base facet class.

◆ ~ctype()

virtual std::ctype< char >::~ctype ( )

protectedvirtual

Destructor.

This function deletes table() if del was true in the constructor.

Member Function Documentation

◆ classic_table()

static const mask* std::ctype< char >::classic_table	(	)
throw	(
	)

static

Returns a pointer to the C locale mask table.

◆ do_narrow() [1/2]

virtual char std::ctype< char >::do_narrow	(	char_type	__c,
		char	__dfault
	)		const

inlineprotectedvirtual

Narrow char.

This virtual function converts the char to char using the simplest reasonable transformation. If the conversion fails, dfault is returned instead. For an underived ctype<char> facet, c will be returned unchanged.

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 to convert.
__dfault	Char to return if conversion fails.

Returns: The converted char.

Definition at line 1134 of file locale_facets.h.

◆ do_narrow() [2/2]

virtual const char_type* std::ctype< char >::do_narrow	(	const char_type *	__lo,
		const char_type *	__hi,
		char	__dfault,
		char *	__to
	)		const

inlineprotectedvirtual

Narrow char array to char array.

This virtual function converts each char in the range [lo,hi) to char using the simplest reasonable transformation and writes the results to the destination array. For any char in the input that cannot be converted, dfault is used instead. For an underived ctype<char> facet, the argument will be copied unchanged.

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.

Definition at line 1160 of file locale_facets.h.

◆ do_tolower() [1/2]

virtual const char_type* std::ctype< char >::do_tolower	(	char_type *	__lo,
		const char_type *	__hi
	)		const

protectedvirtual

Convert array to lowercase.

This virtual function converts each char in the range [lo,hi) to lowercase if possible. Other chars 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 first char in range.
__hi	Pointer to end of range.

Returns: __hi.

◆ do_tolower() [2/2]

virtual char_type std::ctype< char >::do_tolower ( char_type __c ) const

protectedvirtual

Convert to lowercase.

This virtual function converts the char 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

__c	The char to convert.

Returns: The lowercase char if convertible, else __c.

◆ do_toupper() [1/2]

virtual const char_type* std::ctype< char >::do_toupper	(	char_type *	__lo,
		const char_type *	__hi
	)		const

protectedvirtual

Convert array to uppercase.

This virtual function converts each char in the range [lo,hi) to uppercase if possible. Other chars 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.

◆ do_toupper() [2/2]

virtual char_type std::ctype< char >::do_toupper ( char_type __c ) const

protectedvirtual

Convert to uppercase.

This virtual function converts the char 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

__c	The char to convert.

Returns: The uppercase char if convertible, else __c.

◆ do_widen() [1/2]

virtual char_type std::ctype< char >::do_widen ( char __c ) const

inlineprotectedvirtual

Widen char.

This virtual function converts the char to char using the simplest reasonable transformation. For an underived ctype<char> facet, the argument will be returned unchanged.

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

__c	The char to convert.

Returns: The converted character.

Definition at line 1084 of file locale_facets.h.

◆ do_widen() [2/2]

virtual const char* std::ctype< char >::do_widen	(	const char *	__lo,
		const char *	__hi,
		char_type *	__to
	)		const

inlineprotectedvirtual

Widen char array.

This function converts each char in the range [lo,hi) to char using the simplest reasonable transformation. For an underived ctype<char> facet, the argument will be copied unchanged.

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 of range.
__hi	Pointer to end of range.
__to	Pointer to the destination array.

Returns: __hi.

Definition at line 1107 of file locale_facets.h.

◆ is() [1/2]

const char * std::ctype< char >::is	(	const char *	__lo,
		const char *	__hi,
		mask *	__vec
	)		const

inline

Return a mask array.

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

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 47 of file ctype_inline.h.

◆ is() [2/2]

bool std::ctype< char >::is	(	mask	__m,
		char	__c
	)		const

inline

Test char classification.

This function compares the mask table[c] to __m.

Parameters

__c	The char to compare the mask of.
__m	The mask to compare against.

Returns: True if __m & table[__c] is true, false otherwise.

Definition at line 42 of file ctype_inline.h.

◆ narrow() [1/2]

char std::ctype< char >::narrow	(	char_type	__c,
		char	__dfault
	)		const

inline

Narrow char.

This function converts the char to char using the simplest reasonable transformation. If the conversion fails, dfault is returned instead. For an underived ctype<char> facet, c will be returned unchanged.

This function works as if it returns ctype<char>::do_narrow(c). 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 to convert.
__dfault	Char to return if conversion fails.

Returns: The converted character.

Definition at line 931 of file locale_facets.h.

References std::ctype< _CharT >::do_narrow().

◆ narrow() [2/2]

const char_type* std::ctype< char >::narrow	(	const char_type *	__lo,
		const char_type *	__hi,
		char	__dfault,
		char *	__to
	)		const

inline

Narrow char array.

This function converts each char in the input to char using the simplest reasonable transformation and writes the results to the destination array. For any char in the input that cannot be converted, dfault is used instead. For an underived ctype<char> facet, the argument will be copied unchanged.

This function works as if it returns ctype<char>::do_narrow(lo, hi, dfault, to). 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.

Definition at line 964 of file locale_facets.h.

References std::ctype< _CharT >::do_narrow().

◆ scan_is()

const char * std::ctype< char >::scan_is	(	mask	__m,
		const char *	__lo,
		const char *	__hi
	)		const

inline

Find char matching a mask.

This function searches for and returns the first char in [lo,hi) for which is(m,char) is true.

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 if found, else __hi.

Definition at line 56 of file ctype_inline.h.

◆ scan_not()

const char * std::ctype< char >::scan_not	(	mask	__m,
		const char *	__lo,
		const char *	__hi
	)		const

inline

Find char not matching a mask.

This function searches for and returns a pointer to the first char in [__lo,__hi) for which is(m,char) is false.

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 if found, else __hi.

Definition at line 66 of file ctype_inline.h.

◆ table()

const mask* std::ctype< char >::table	(	)	const
throw	(
	)

inline

Returns a pointer to the mask table provided to the constructor, or the default from classic_table() if none was provided.

Definition at line 983 of file locale_facets.h.

◆ tolower() [1/2]

const char_type* std::ctype< char >::tolower	(	char_type *	__lo,
		const char_type *	__hi
	)		const

inline

Convert array to lowercase.

This function converts each char in the range [lo,hi) to lowercase if possible. Other chars remain untouched.

tolower() acts as if it returns ctype<char>:: do_tolower(__lo, __hi). do_tolower() must always return the same result for the same input.

Parameters

__lo	Pointer to first char in range.
__hi	Pointer to end of range.

Returns: __hi.

Definition at line 852 of file locale_facets.h.

References std::ctype< _CharT >::do_tolower().

◆ tolower() [2/2]

char_type std::ctype< char >::tolower ( char_type __c ) const

inline

Convert to lowercase.

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

tolower() acts as if it returns ctype<char>::do_tolower(__c). do_tolower() must always return the same result for the same input.

Parameters

__c	The char to convert.

Returns: The lowercase char if convertible, else __c.

Definition at line 835 of file locale_facets.h.

References std::ctype< _CharT >::do_tolower().

◆ toupper() [1/2]

const char_type* std::ctype< char >::toupper	(	char_type *	__lo,
		const char_type *	__hi
	)		const

inline

Convert array to uppercase.

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

toupper() acts as if it returns ctype<char>:: do_toupper(__lo, __hi). do_toupper() must always return the same result for the same input.

Parameters

__lo	Pointer to first char in range.
__hi	Pointer to end of range.

Returns: __hi.

Definition at line 819 of file locale_facets.h.

References std::ctype< _CharT >::do_toupper().

◆ toupper() [2/2]

char_type std::ctype< char >::toupper ( char_type __c ) const

inline

Convert to uppercase.

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

toupper() acts as if it returns ctype<char>::do_toupper(c). do_toupper() must always return the same result for the same input.

Parameters

__c	The char to convert.

Returns: The uppercase char if convertible, else __c.

Definition at line 802 of file locale_facets.h.

References std::ctype< _CharT >::do_toupper().

◆ widen() [1/2]

char_type std::ctype< char >::widen ( char __c ) const

inline

Widen char.

This function converts the char to char_type using the simplest reasonable transformation. For an underived ctype<char> facet, the argument will be returned unchanged.

This function works as if it returns ctype<char>::do_widen(c). 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

__c	The char to convert.

Returns: The converted character.

Definition at line 872 of file locale_facets.h.

References std::ctype< _CharT >::do_widen().

◆ widen() [2/2]

const char* std::ctype< char >::widen	(	const char *	__lo,
		const char *	__hi,
		char_type *	__to
	)		const

inline

Widen char array.

This function converts each char in the input to char using the simplest reasonable transformation. For an underived ctype<char> facet, the argument will be copied unchanged.

This function works as if it returns ctype<char>::do_widen(c). 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 first char in range.
__hi	Pointer to end of range.
__to	Pointer to the destination array.

Returns: __hi.

Definition at line 899 of file locale_facets.h.

References std::ctype< _CharT >::do_widen().

Member Data Documentation

◆ id

locale::id std::ctype< char >::id

static

The facet id for ctype<char>

Definition at line 703 of file locale_facets.h.

◆ table_size

const size_t std::ctype< char >::table_size

static

The size of the mask table. It is SCHAR_MAX + 1.

Definition at line 705 of file locale_facets.h.

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

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

◆ char_type

Constructor & Destructor Documentation

◆ ctype() [1/2]

◆ ctype() [2/2]

◆ ~ctype()

Member Function Documentation

◆ classic_table()

◆ do_narrow() [1/2]

◆ do_narrow() [2/2]

◆ do_tolower() [1/2]

◆ do_tolower() [2/2]

◆ do_toupper() [1/2]

◆ do_toupper() [2/2]

◆ do_widen() [1/2]

◆ do_widen() [2/2]

◆ is() [1/2]

◆ is() [2/2]

◆ narrow() [1/2]

◆ narrow() [2/2]

◆ scan_is()

◆ scan_not()

◆ table()

◆ tolower() [1/2]

◆ tolower() [2/2]

◆ toupper() [1/2]

◆ toupper() [2/2]

◆ widen() [1/2]

◆ widen() [2/2]

Member Data Documentation

◆ id

◆ table_size