_ctype.cpp File Reference

#include <corecrt_internal.h>
#include <ctype.h>
#include <locale.h>

Include dependency graph for _ctype.cpp:

Go to the source code of this file.

Functions
static __forceinline int	fast_check_initial_locale (int const c, int const mask) throw ()
static __forceinline int	fast_check_current_locale (int const c, int const mask) throw ()
static __forceinline int	fast_check_given_locale (int const c, int const mask, _locale_t const locale) throw ()
	int (__cdecl _isalpha_l)(int const c

Variables
_locale_t const	locale

Function Documentation

fast_check_current_locale()

static __forceinline int fast_check_current_locale ( int const  c, int const  mask  ) throw ( )

static

Definition at line 28 of file _ctype.cpp.

{
    // Avoid PTD lookup when locale is unchanged.
    if (!__acrt_locale_changed())
    {
        return fast_check_initial_locale(c, mask);
    }
 
    // Avoid _LocaleUpdate overhead:
    // * Extra un-inlined function calls
    // * Multibyte locale synchronization
    // * Marking/unmarking current thread as using per-thread-locales.
 
    __acrt_ptd * const ptd{__acrt_getptd()};
    __crt_locale_data * locale_info{ptd->_locale_info};
    __acrt_update_locale_info(ptd, &locale_info);
 
    // Common case
    if (c >= -1 && c <= 255)
    {
        return locale_info->_public._locale_pctype[c] & mask;
    }
 
    // Microsoft Extension: Translate int values outside of unsigned char range for DBCS locales
    // Note that our documentation also clearly states this is undefined.
    if (locale_info->_public._locale_mb_cur_max > 1)
    {
        return _isctype_l(c, mask, nullptr);
    }
 
    return 0;
}

Referenced by fast_check_given_locale(), and int().

fast_check_given_locale()

static __forceinline int fast_check_given_locale ( int const  c, int const  mask, _locale_t const  locale  ) throw ( )

static

Definition at line 61 of file _ctype.cpp.

{
    // Avoid _LocaleUpdate overhead - just check whether it's nullptr.
    if (locale == nullptr) {
        return fast_check_current_locale(c, mask);
    }
 
    // Common case
    if (c >= -1 && c <= 255)
    {
        return locale->locinfo->_public._locale_pctype[c] & mask;
    }
 
    // Microsoft Extension: Translate int values outside of unsigned char range for DBCS locales
    // Note that our documentation also clearly states this is undefined.
    if (locale->locinfo->_public._locale_mb_cur_max > 1)
    {
        return _isctype_l(c, mask, locale);
    }
 
    return 0;
}

fast_check_initial_locale()

static __forceinline int fast_check_initial_locale ( int const  c, int const  mask  ) throw ( )

static

Definition at line 19 of file _ctype.cpp.

{
    #ifdef _DEBUG
    return _chvalidator(c, mask);
    #else
    return __acrt_locale_get_ctype_array_value(__acrt_initial_locale_data._public._locale_pctype, c, mask);
    #endif
}

Referenced by fast_check_current_locale().

int()

int

(

__cdecl

_isalpha_l

)

const

Definition at line 90 of file _ctype.cpp.

{
    return fast_check_current_locale(c, _ALPHA);
}

Variable Documentation

locale

_locale_t const locale

Initial value:

{
    return fast_check_given_locale(c, _ALPHA, locale)

Definition at line 85 of file _ctype.cpp.