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std::collate_byname(3) Library Functions Manual std::collate_byname(3)

NAME

std::collate_byname -

class collate_byname [22.2.4.2].

SYNOPSIS

Inherits std::collate< _CharT >.

Public Types



typedef _CharT char_type
typedef basic_string< _CharT > string_type


Public Member Functions


template<> int _M_compare (const wchar_t *, const wchar_t *) const
template<> int _M_compare (const char *, const char *) const
int _M_compare (const _CharT *, const _CharT *) const
template<> size_t _M_transform (wchar_t *, const wchar_t *, size_t) const
template<> size_t _M_transform (char *, const char *, size_t) const
size_t _M_transform (_CharT *, const _CharT *, size_t) const
collate_byname (const char *__s, size_t __refs=0)
int compare (const _CharT *__lo1, const _CharT *__hi1, const _CharT *__lo2, const _CharT *__hi2) const
long hash (const _CharT *__lo, const _CharT *__hi) const
string_type transform (const _CharT *__lo, const _CharT *__hi) const

Static Public Attributes


static locale::id id

Protected Member Functions


virtual int do_compare (const _CharT *__lo1, const _CharT *__hi1, const _CharT *__lo2, const _CharT *__hi2) const
virtual long do_hash (const _CharT *__lo, const _CharT *__hi) const
virtual string_type do_transform (const _CharT *__lo, const _CharT *__hi) const

Static Protected Member Functions


static __c_locale _S_clone_c_locale (__c_locale &__cloc)
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 ()

Protected Attributes


__c_locale _M_c_locale_collate

Friends


class locale::_Impl

Detailed Description

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

class collate_byname [22.2.4.2].

Definition at line 780 of file locale_classes.h.

Member Typedef Documentation

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

Public typedefs.

Reimplemented from std::collate< _CharT >.

Definition at line 785 of file locale_classes.h.

template<typename _CharT > typedef basic_string<_CharT> std::collate_byname< _CharT >::string_type

Public typedefs.

Reimplemented from std::collate< _CharT >.

Definition at line 786 of file locale_classes.h.

Member Function Documentation

template<typename _CharT> int std::collate< _CharT >::compare (const _CharT * __lo1, const _CharT * __hi1, const _CharT * __lo2, const _CharT * __hi2) const [inline, inherited]

Compare two strings. This function compares two strings and returns the result by calling collate::do_compare().

Parameters:

lo1 Start of string 1.
hi1 End of string 1.
lo2 Start of string 2.
hi2 End of string 2.

Returns:

1 if string1 > string2, -1 if string1 < string2, else 0.

Definition at line 662 of file locale_classes.h.

template<typename _CharT> int std::collate< _CharT >::do_compare (const _CharT * __lo1, const _CharT * __hi1, const _CharT * __lo2, const _CharT * __hi2) const [inline, protected, virtual, inherited]

Compare two strings. This function is a hook for derived classes to change the value returned.

See also:

compare().

Parameters:

lo1 Start of string 1.
hi1 End of string 1.
lo2 Start of string 2.
hi2 End of string 2.

Returns:

1 if string1 > string2, -1 if string1 < string2, else 0.

Definition at line 134 of file locale_classes.tcc.

References std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::basic_string< _CharT, _Traits, _Alloc >::data(), and std::basic_string< _CharT, _Traits, _Alloc >::length().

template<typename _CharT> long std::collate< _CharT >::do_hash (const _CharT * __lo, const _CharT * __hi) const [inline, protected, virtual, inherited]

Return hash of a string. This function computes and returns a hash on the input string. This function is a hook for derived classes to change the value returned.

Parameters:

lo Start of string.
hi End of string.

Returns:

Hash value.

Definition at line 229 of file locale_classes.tcc.

template<typename _CharT> collate< _CharT >::string_type std::collate< _CharT >::do_transform (const _CharT * __lo, const _CharT * __hi) const [inline, protected, virtual, inherited]

Transform string to comparable form. This function is a hook for derived classes to change the value returned.

Parameters:

lo1 Start of string 1.
hi1 End of string 1.
lo2 Start of string 2.
hi2 End of string 2.

Returns:

1 if string1 > string2, -1 if string1 < string2, else 0.

Definition at line 173 of file locale_classes.tcc.

References std::basic_string< _CharT, _Traits, _Alloc >::append(), std::basic_string< _CharT, _Traits, _Alloc >::c_str(), std::basic_string< _CharT, _Traits, _Alloc >::data(), std::basic_string< _CharT, _Traits, _Alloc >::length(), and std::basic_string< _CharT, _Traits, _Alloc >::push_back().

template<typename _CharT> long std::collate< _CharT >::hash (const _CharT * __lo, const _CharT * __hi) const [inline, inherited]

Return hash of a string. This function computes and returns a hash on the input string. It does so by returning collate::do_hash().

Parameters:

lo Start of string.
hi End of string.

Returns:

Hash value.

Definition at line 695 of file locale_classes.h.

template<typename _CharT> string_type std::collate< _CharT >::transform (const _CharT * __lo, const _CharT * __hi) const [inline, inherited]

Transform string to comparable form. This function is a wrapper for strxfrm functionality. It takes the input string and returns a modified string that can be directly compared to other transformed strings. In the 'C' locale, this function just returns a copy of the input string. In some other locales, it may replace two chars with one, change a char for another, etc. It does so by returning collate::do_transform().

Parameters:

lo Start of string.
hi End of string.

Returns:

Transformed string_type.

Definition at line 681 of file locale_classes.h.

Referenced by std::regex_traits< _Ch_type >::transform().

Member Data Documentation

template<typename _CharT> locale::id std::collate< _CharT >::id [inline, static, inherited]

Numpunct facet id.

Definition at line 621 of file locale_classes.h.

Author

Generated automatically by Doxygen for libstdc++ from the source code.

19 Jun 2018 libstdc++