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__locale
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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___LOCALE
#define _LIBCPP___LOCALE
#include <__config>
#include <__locale_dir/locale_base_api.h>
#include <__memory/shared_count.h>
#include <__mutex/once_flag.h>
#include <__type_traits/make_unsigned.h>
#include <__utility/no_destroy.h>
#include <__utility/private_constructor_tag.h>
#include <cctype>
#include <clocale>
#include <cstdint>
#include <cstdlib>
#include <string>
// Some platforms require more includes than others. Keep the includes on all plaforms for now.
#include <cstddef>
#include <cstring>
#if _LIBCPP_HAS_WIDE_CHARACTERS
# include <cwchar>
#else
# include <__std_mbstate_t.h>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_EXPORTED_FROM_ABI locale;
template <class _Facet>
_LIBCPP_HIDE_FROM_ABI bool has_facet(const locale&) _NOEXCEPT;
template <class _Facet>
_LIBCPP_HIDE_FROM_ABI const _Facet& use_facet(const locale&);
class _LIBCPP_EXPORTED_FROM_ABI locale {
public:
// locale is essentially a shared_ptr that doesn't support weak_ptrs and never got a move constructor.
using __trivially_relocatable = locale;
// types:
class _LIBCPP_EXPORTED_FROM_ABI facet;
class _LIBCPP_EXPORTED_FROM_ABI id;
typedef int category;
static const category // values assigned here are for exposition only
none = 0,
collate = LC_COLLATE_MASK, ctype = LC_CTYPE_MASK, monetary = LC_MONETARY_MASK, numeric = LC_NUMERIC_MASK,
time = LC_TIME_MASK, messages = LC_MESSAGES_MASK, all = collate | ctype | monetary | numeric | time | messages;
// construct/copy/destroy:
locale() _NOEXCEPT;
locale(const locale&) _NOEXCEPT;
explicit locale(const char*);
explicit locale(const string&);
locale(const locale&, const char*, category);
locale(const locale&, const string&, category);
template <class _Facet>
_LIBCPP_HIDE_FROM_ABI locale(const locale&, _Facet*);
locale(const locale&, const locale&, category);
~locale();
const locale& operator=(const locale&) _NOEXCEPT;
template <class _Facet>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS locale combine(const locale&) const;
// locale operations:
string name() const;
bool operator==(const locale&) const;
#if _LIBCPP_STD_VER <= 17
_LIBCPP_HIDE_FROM_ABI bool operator!=(const locale& __y) const { return !(*this == __y); }
#endif
template <class _CharT, class _Traits, class _Allocator>
_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS bool
operator()(const basic_string<_CharT, _Traits, _Allocator>&, const basic_string<_CharT, _Traits, _Allocator>&) const;
// global locale objects:
static locale global(const locale&);
static const locale& classic();
private:
class __imp;
__imp* __locale_;
template <class>
friend struct __no_destroy;
_LIBCPP_HIDE_FROM_ABI explicit locale(__private_constructor_tag, __imp* __loc) : __locale_(__loc) {}
void __install_ctor(const locale&, facet*, long);
static locale& __global();
bool has_facet(id&) const;
const facet* use_facet(id&) const;
template <class _Facet>
friend bool has_facet(const locale&) _NOEXCEPT;
template <class _Facet>
friend const _Facet& use_facet(const locale&);
};
class _LIBCPP_EXPORTED_FROM_ABI locale::facet : public __shared_count {
protected:
_LIBCPP_HIDE_FROM_ABI explicit facet(size_t __refs = 0) : __shared_count(static_cast<long>(__refs) - 1) {}
~facet() override;
// facet(const facet&) = delete; // effectively done in __shared_count
// void operator=(const facet&) = delete;
private:
void __on_zero_shared() _NOEXCEPT override;
};
class _LIBCPP_EXPORTED_FROM_ABI locale::id {
once_flag __flag_;
int32_t __id_;
static int32_t __next_id;
public:
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR id() : __id_(0) {}
void operator=(const id&) = delete;
id(const id&) = delete;
public: // only needed for tests
long __get();
friend class locale;
friend class locale::__imp;
};
template <class _Facet>
inline _LIBCPP_HIDE_FROM_ABI locale::locale(const locale& __other, _Facet* __f) {
__install_ctor(__other, __f, __f ? __f->id.__get() : 0);
}
template <class _Facet>
locale locale::combine(const locale& __other) const {
if (!std::has_facet<_Facet>(__other))
__throw_runtime_error("locale::combine: locale missing facet");
return locale(*this, &const_cast<_Facet&>(std::use_facet<_Facet>(__other)));
}
template <class _Facet>
inline _LIBCPP_HIDE_FROM_ABI bool has_facet(const locale& __l) _NOEXCEPT {
return __l.has_facet(_Facet::id);
}
template <class _Facet>
inline _LIBCPP_HIDE_FROM_ABI const _Facet& use_facet(const locale& __l) {
return static_cast<const _Facet&>(*__l.use_facet(_Facet::id));
}
// template <class _CharT> class collate;
template <class _CharT>
class _LIBCPP_TEMPLATE_VIS collate : public locale::facet {
public:
typedef _CharT char_type;
typedef basic_string<char_type> string_type;
_LIBCPP_HIDE_FROM_ABI explicit collate(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI int
compare(const char_type* __lo1, const char_type* __hi1, const char_type* __lo2, const char_type* __hi2) const {
return do_compare(__lo1, __hi1, __lo2, __hi2);
}
// FIXME(EricWF): The _LIBCPP_ALWAYS_INLINE is needed on Windows to work
// around a dllimport bug that expects an external instantiation.
_LIBCPP_HIDE_FROM_ABI _LIBCPP_ALWAYS_INLINE string_type
transform(const char_type* __lo, const char_type* __hi) const {
return do_transform(__lo, __hi);
}
_LIBCPP_HIDE_FROM_ABI long hash(const char_type* __lo, const char_type* __hi) const { return do_hash(__lo, __hi); }
static locale::id id;
protected:
~collate() override;
virtual int
do_compare(const char_type* __lo1, const char_type* __hi1, const char_type* __lo2, const char_type* __hi2) const;
virtual string_type do_transform(const char_type* __lo, const char_type* __hi) const {
return string_type(__lo, __hi);
}
virtual long do_hash(const char_type* __lo, const char_type* __hi) const;
};
template <class _CharT>
locale::id collate<_CharT>::id;
template <class _CharT>
collate<_CharT>::~collate() {}
template <class _CharT>
int collate<_CharT>::do_compare(
const char_type* __lo1, const char_type* __hi1, const char_type* __lo2, const char_type* __hi2) const {
for (; __lo2 != __hi2; ++__lo1, ++__lo2) {
if (__lo1 == __hi1 || *__lo1 < *__lo2)
return -1;
if (*__lo2 < *__lo1)
return 1;
}
return __lo1 != __hi1;
}
template <class _CharT>
long collate<_CharT>::do_hash(const char_type* __lo, const char_type* __hi) const {
size_t __h = 0;
const size_t __sr = __CHAR_BIT__ * sizeof(size_t) - 8;
const size_t __mask = size_t(0xF) << (__sr + 4);
for (const char_type* __p = __lo; __p != __hi; ++__p) {
__h = (__h << 4) + static_cast<size_t>(*__p);
size_t __g = __h & __mask;
__h ^= __g | (__g >> __sr);
}
return static_cast<long>(__h);
}
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS collate<char>;
#if _LIBCPP_HAS_WIDE_CHARACTERS
extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS collate<wchar_t>;
#endif
// template <class CharT> class collate_byname;
template <class _CharT>
class _LIBCPP_TEMPLATE_VIS collate_byname;
template <>
class _LIBCPP_EXPORTED_FROM_ABI collate_byname<char> : public collate<char> {
__locale::__locale_t __l_;
public:
typedef char char_type;
typedef basic_string<char_type> string_type;
explicit collate_byname(const char* __n, size_t __refs = 0);
explicit collate_byname(const string& __n, size_t __refs = 0);
protected:
~collate_byname() override;
int do_compare(
const char_type* __lo1, const char_type* __hi1, const char_type* __lo2, const char_type* __hi2) const override;
string_type do_transform(const char_type* __lo, const char_type* __hi) const override;
};
#if _LIBCPP_HAS_WIDE_CHARACTERS
template <>
class _LIBCPP_EXPORTED_FROM_ABI collate_byname<wchar_t> : public collate<wchar_t> {
__locale::__locale_t __l_;
public:
typedef wchar_t char_type;
typedef basic_string<char_type> string_type;
explicit collate_byname(const char* __n, size_t __refs = 0);
explicit collate_byname(const string& __n, size_t __refs = 0);
protected:
~collate_byname() override;
int do_compare(
const char_type* __lo1, const char_type* __hi1, const char_type* __lo2, const char_type* __hi2) const override;
string_type do_transform(const char_type* __lo, const char_type* __hi) const override;
};
#endif
template <class _CharT, class _Traits, class _Allocator>
bool locale::operator()(const basic_string<_CharT, _Traits, _Allocator>& __x,
const basic_string<_CharT, _Traits, _Allocator>& __y) const {
return std::use_facet<std::collate<_CharT> >(*this).compare(
__x.data(), __x.data() + __x.size(), __y.data(), __y.data() + __y.size()) < 0;
}
// template <class charT> class ctype
class _LIBCPP_EXPORTED_FROM_ABI ctype_base {
public:
#if defined(_LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE)
typedef unsigned long mask;
static const mask space = 1 << 0;
static const mask print = 1 << 1;
static const mask cntrl = 1 << 2;
static const mask upper = 1 << 3;
static const mask lower = 1 << 4;
static const mask alpha = 1 << 5;
static const mask digit = 1 << 6;
static const mask punct = 1 << 7;
static const mask xdigit = 1 << 8;
static const mask blank = 1 << 9;
# if defined(__BIONIC__)
// Historically this was a part of regex_traits rather than ctype_base. The
// historical value of the constant is preserved for ABI compatibility.
static const mask __regex_word = 0x8000;
# else
static const mask __regex_word = 1 << 10;
# endif // defined(__BIONIC__)
#elif defined(__GLIBC__)
typedef unsigned short mask;
static const mask space = _ISspace;
static const mask print = _ISprint;
static const mask cntrl = _IScntrl;
static const mask upper = _ISupper;
static const mask lower = _ISlower;
static const mask alpha = _ISalpha;
static const mask digit = _ISdigit;
static const mask punct = _ISpunct;
static const mask xdigit = _ISxdigit;
static const mask blank = _ISblank;
# if defined(__mips__) || (BYTE_ORDER == BIG_ENDIAN)
static const mask __regex_word = static_cast<mask>(_ISbit(15));
# else
static const mask __regex_word = 0x80;
# endif
#elif defined(_LIBCPP_MSVCRT_LIKE)
typedef unsigned short mask;
static const mask space = _SPACE;
static const mask print = _BLANK | _PUNCT | _ALPHA | _DIGIT;
static const mask cntrl = _CONTROL;
static const mask upper = _UPPER;
static const mask lower = _LOWER;
static const mask alpha = _ALPHA;
static const mask digit = _DIGIT;
static const mask punct = _PUNCT;
static const mask xdigit = _HEX;
static const mask blank = _BLANK;
static const mask __regex_word = 0x4000; // 0x8000 and 0x0100 and 0x00ff are used
# define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_PRINT
# define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_ALPHA
#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__)
# ifdef __APPLE__
typedef __uint32_t mask;
# elif defined(__FreeBSD__)
typedef unsigned long mask;
# elif defined(__NetBSD__)
typedef unsigned short mask;
# endif
static const mask space = _CTYPE_S;
static const mask print = _CTYPE_R;
static const mask cntrl = _CTYPE_C;
static const mask upper = _CTYPE_U;
static const mask lower = _CTYPE_L;
static const mask alpha = _CTYPE_A;
static const mask digit = _CTYPE_D;
static const mask punct = _CTYPE_P;
static const mask xdigit = _CTYPE_X;
# if defined(__NetBSD__)
static const mask blank = _CTYPE_BL;
// NetBSD defines classes up to 0x2000
// see sys/ctype_bits.h, _CTYPE_Q
static const mask __regex_word = 0x8000;
# else
static const mask blank = _CTYPE_B;
static const mask __regex_word = 0x80;
# endif
#elif defined(_AIX)
typedef unsigned int mask;
static const mask space = _ISSPACE;
static const mask print = _ISPRINT;
static const mask cntrl = _ISCNTRL;
static const mask upper = _ISUPPER;
static const mask lower = _ISLOWER;
static const mask alpha = _ISALPHA;
static const mask digit = _ISDIGIT;
static const mask punct = _ISPUNCT;
static const mask xdigit = _ISXDIGIT;
static const mask blank = _ISBLANK;
static const mask __regex_word = 0x8000;
#elif defined(_NEWLIB_VERSION)
// Same type as Newlib's _ctype_ array in newlib/libc/include/ctype.h.
typedef char mask;
// In case char is signed, static_cast is needed to avoid warning on
// positive value becomming negative.
static const mask space = static_cast<mask>(_S);
static const mask print = static_cast<mask>(_P | _U | _L | _N | _B);
static const mask cntrl = static_cast<mask>(_C);
static const mask upper = static_cast<mask>(_U);
static const mask lower = static_cast<mask>(_L);
static const mask alpha = static_cast<mask>(_U | _L);
static const mask digit = static_cast<mask>(_N);
static const mask punct = static_cast<mask>(_P);
static const mask xdigit = static_cast<mask>(_X | _N);
static const mask blank = static_cast<mask>(_B);
// mask is already fully saturated, use a different type in regex_type_traits.
static const unsigned short __regex_word = 0x100;
# define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_PRINT
# define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_ALPHA
# define _LIBCPP_CTYPE_MASK_IS_COMPOSITE_XDIGIT
#elif defined(__MVS__)
# if defined(__NATIVE_ASCII_F)
typedef unsigned int mask;
static const mask space = _ISSPACE_A;
static const mask print = _ISPRINT_A;
static const mask cntrl = _ISCNTRL_A;
static const mask upper = _ISUPPER_A;
static const mask lower = _ISLOWER_A;
static const mask alpha = _ISALPHA_A;
static const mask digit = _ISDIGIT_A;
static const mask punct = _ISPUNCT_A;
static const mask xdigit = _ISXDIGIT_A;
static const mask blank = _ISBLANK_A;
# else
typedef unsigned short mask;
static const mask space = __ISSPACE;
static const mask print = __ISPRINT;
static const mask cntrl = __ISCNTRL;
static const mask upper = __ISUPPER;
static const mask lower = __ISLOWER;
static const mask alpha = __ISALPHA;
static const mask digit = __ISDIGIT;
static const mask punct = __ISPUNCT;
static const mask xdigit = __ISXDIGIT;
static const mask blank = __ISBLANK;
# endif
static const mask __regex_word = 0x8000;
#else
# error unknown rune table for this platform -- do you mean to define _LIBCPP_PROVIDES_DEFAULT_RUNE_TABLE?
#endif
static const mask alnum = alpha | digit;
static const mask graph = alnum | punct;
_LIBCPP_HIDE_FROM_ABI ctype_base() {}
static_assert((__regex_word & ~(std::make_unsigned<mask>::type)(space | print | cntrl | upper | lower | alpha |
digit | punct | xdigit | blank)) == __regex_word,
"__regex_word can't overlap other bits");
};
template <class _CharT>
class _LIBCPP_TEMPLATE_VIS ctype;
#if _LIBCPP_HAS_WIDE_CHARACTERS
template <>
class _LIBCPP_EXPORTED_FROM_ABI ctype<wchar_t> : public locale::facet, public ctype_base {
public:
typedef wchar_t char_type;
_LIBCPP_HIDE_FROM_ABI explicit ctype(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI bool is(mask __m, char_type __c) const { return do_is(__m, __c); }
_LIBCPP_HIDE_FROM_ABI const char_type* is(const char_type* __low, const char_type* __high, mask* __vec) const {
return do_is(__low, __high, __vec);
}
_LIBCPP_HIDE_FROM_ABI const char_type* scan_is(mask __m, const char_type* __low, const char_type* __high) const {
return do_scan_is(__m, __low, __high);
}
_LIBCPP_HIDE_FROM_ABI const char_type* scan_not(mask __m, const char_type* __low, const char_type* __high) const {
return do_scan_not(__m, __low, __high);
}
_LIBCPP_HIDE_FROM_ABI char_type toupper(char_type __c) const { return do_toupper(__c); }
_LIBCPP_HIDE_FROM_ABI const char_type* toupper(char_type* __low, const char_type* __high) const {
return do_toupper(__low, __high);
}
_LIBCPP_HIDE_FROM_ABI char_type tolower(char_type __c) const { return do_tolower(__c); }
_LIBCPP_HIDE_FROM_ABI const char_type* tolower(char_type* __low, const char_type* __high) const {
return do_tolower(__low, __high);
}
_LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const { return do_widen(__c); }
_LIBCPP_HIDE_FROM_ABI const char* widen(const char* __low, const char* __high, char_type* __to) const {
return do_widen(__low, __high, __to);
}
_LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const { return do_narrow(__c, __dfault); }
_LIBCPP_HIDE_FROM_ABI const char_type*
narrow(const char_type* __low, const char_type* __high, char __dfault, char* __to) const {
return do_narrow(__low, __high, __dfault, __to);
}
static locale::id id;
protected:
~ctype() override;
virtual bool do_is(mask __m, char_type __c) const;
virtual const char_type* do_is(const char_type* __low, const char_type* __high, mask* __vec) const;
virtual const char_type* do_scan_is(mask __m, const char_type* __low, const char_type* __high) const;
virtual const char_type* do_scan_not(mask __m, const char_type* __low, const char_type* __high) const;
virtual char_type do_toupper(char_type) const;
virtual const char_type* do_toupper(char_type* __low, const char_type* __high) const;
virtual char_type do_tolower(char_type) const;
virtual const char_type* do_tolower(char_type* __low, const char_type* __high) const;
virtual char_type do_widen(char) const;
virtual const char* do_widen(const char* __low, const char* __high, char_type* __dest) const;
virtual char do_narrow(char_type, char __dfault) const;
virtual const char_type*
do_narrow(const char_type* __low, const char_type* __high, char __dfault, char* __dest) const;
};
#endif // _LIBCPP_HAS_WIDE_CHARACTERS
template <>
class _LIBCPP_EXPORTED_FROM_ABI ctype<char> : public locale::facet, public ctype_base {
const mask* __tab_;
bool __del_;
public:
typedef char char_type;
explicit ctype(const mask* __tab = nullptr, bool __del = false, size_t __refs = 0);
_LIBCPP_HIDE_FROM_ABI bool is(mask __m, char_type __c) const {
return isascii(__c) ? (__tab_[static_cast<int>(__c)] & __m) != 0 : false;
}
_LIBCPP_HIDE_FROM_ABI const char_type* is(const char_type* __low, const char_type* __high, mask* __vec) const {
for (; __low != __high; ++__low, ++__vec)
*__vec = isascii(*__low) ? __tab_[static_cast<int>(*__low)] : 0;
return __low;
}
_LIBCPP_HIDE_FROM_ABI const char_type* scan_is(mask __m, const char_type* __low, const char_type* __high) const {
for (; __low != __high; ++__low)
if (isascii(*__low) && (__tab_[static_cast<int>(*__low)] & __m))
break;
return __low;
}
_LIBCPP_HIDE_FROM_ABI const char_type* scan_not(mask __m, const char_type* __low, const char_type* __high) const {
for (; __low != __high; ++__low)
if (!isascii(*__low) || !(__tab_[static_cast<int>(*__low)] & __m))
break;
return __low;
}
_LIBCPP_HIDE_FROM_ABI char_type toupper(char_type __c) const { return do_toupper(__c); }
_LIBCPP_HIDE_FROM_ABI const char_type* toupper(char_type* __low, const char_type* __high) const {
return do_toupper(__low, __high);
}
_LIBCPP_HIDE_FROM_ABI char_type tolower(char_type __c) const { return do_tolower(__c); }
_LIBCPP_HIDE_FROM_ABI const char_type* tolower(char_type* __low, const char_type* __high) const {
return do_tolower(__low, __high);
}
_LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const { return do_widen(__c); }
_LIBCPP_HIDE_FROM_ABI const char* widen(const char* __low, const char* __high, char_type* __to) const {
return do_widen(__low, __high, __to);
}
_LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const { return do_narrow(__c, __dfault); }
_LIBCPP_HIDE_FROM_ABI const char*
narrow(const char_type* __low, const char_type* __high, char __dfault, char* __to) const {
return do_narrow(__low, __high, __dfault, __to);
}
static locale::id id;
#ifdef _CACHED_RUNES
static const size_t table_size = _CACHED_RUNES;
#else
static const size_t table_size = 256; // FIXME: Don't hardcode this.
#endif
_LIBCPP_HIDE_FROM_ABI const mask* table() const _NOEXCEPT { return __tab_; }
static const mask* classic_table() _NOEXCEPT;
#if defined(__GLIBC__) || defined(__EMSCRIPTEN__)
static const int* __classic_upper_table() _NOEXCEPT;
static const int* __classic_lower_table() _NOEXCEPT;
#endif
#if defined(__NetBSD__)
static const short* __classic_upper_table() _NOEXCEPT;
static const short* __classic_lower_table() _NOEXCEPT;
#endif
#if defined(__MVS__)
static const unsigned short* __classic_upper_table() _NOEXCEPT;
static const unsigned short* __classic_lower_table() _NOEXCEPT;
#endif
protected:
~ctype() override;
virtual char_type do_toupper(char_type __c) const;
virtual const char_type* do_toupper(char_type* __low, const char_type* __high) const;
virtual char_type do_tolower(char_type __c) const;
virtual const char_type* do_tolower(char_type* __low, const char_type* __high) const;
virtual char_type do_widen(char __c) const;
virtual const char* do_widen(const char* __low, const char* __high, char_type* __to) const;
virtual char do_narrow(char_type __c, char __dfault) const;
virtual const char* do_narrow(const char_type* __low, const char_type* __high, char __dfault, char* __to) const;
};
// template <class CharT> class ctype_byname;
template <class _CharT>
class _LIBCPP_TEMPLATE_VIS ctype_byname;
template <>
class _LIBCPP_EXPORTED_FROM_ABI ctype_byname<char> : public ctype<char> {
__locale::__locale_t __l_;
public:
explicit ctype_byname(const char*, size_t = 0);
explicit ctype_byname(const string&, size_t = 0);
protected:
~ctype_byname() override;
char_type do_toupper(char_type) const override;
const char_type* do_toupper(char_type* __low, const char_type* __high) const override;
char_type do_tolower(char_type) const override;
const char_type* do_tolower(char_type* __low, const char_type* __high) const override;
};
#if _LIBCPP_HAS_WIDE_CHARACTERS
template <>
class _LIBCPP_EXPORTED_FROM_ABI ctype_byname<wchar_t> : public ctype<wchar_t> {
__locale::__locale_t __l_;
public:
explicit ctype_byname(const char*, size_t = 0);
explicit ctype_byname(const string&, size_t = 0);
protected:
~ctype_byname() override;
bool do_is(mask __m, char_type __c) const override;
const char_type* do_is(const char_type* __low, const char_type* __high, mask* __vec) const override;
const char_type* do_scan_is(mask __m, const char_type* __low, const char_type* __high) const override;
const char_type* do_scan_not(mask __m, const char_type* __low, const char_type* __high) const override;
char_type do_toupper(char_type) const override;
const char_type* do_toupper(char_type* __low, const char_type* __high) const override;
char_type do_tolower(char_type) const override;
const char_type* do_tolower(char_type* __low, const char_type* __high) const override;
char_type do_widen(char) const override;
const char* do_widen(const char* __low, const char* __high, char_type* __dest) const override;
char do_narrow(char_type, char __dfault) const override;
const char_type*
do_narrow(const char_type* __low, const char_type* __high, char __dfault, char* __dest) const override;
};
#endif // _LIBCPP_HAS_WIDE_CHARACTERS
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isspace(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::space, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isprint(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::print, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool iscntrl(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::cntrl, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isupper(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::upper, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool islower(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::lower, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isalpha(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::alpha, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isdigit(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::digit, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool ispunct(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::punct, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isxdigit(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::xdigit, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isalnum(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::alnum, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI bool isgraph(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::graph, __c);
}
template <class _CharT>
_LIBCPP_HIDE_FROM_ABI bool isblank(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).is(ctype_base::blank, __c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI _CharT toupper(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).toupper(__c);
}
template <class _CharT>
inline _LIBCPP_HIDE_FROM_ABI _CharT tolower(_CharT __c, const locale& __loc) {
return std::use_facet<ctype<_CharT> >(__loc).tolower(__c);
}
// codecvt_base
class _LIBCPP_EXPORTED_FROM_ABI codecvt_base {
public:
_LIBCPP_HIDE_FROM_ABI codecvt_base() {}
enum result { ok, partial, error, noconv };
};
// template <class internT, class externT, class stateT> class codecvt;
template <class _InternT, class _ExternT, class _StateT>
class _LIBCPP_TEMPLATE_VIS codecvt;
// template <> class codecvt<char, char, mbstate_t>
template <>
class _LIBCPP_EXPORTED_FROM_ABI codecvt<char, char, mbstate_t> : public locale::facet, public codecvt_base {
public:
typedef char intern_type;
typedef char extern_type;
typedef mbstate_t state_type;
_LIBCPP_HIDE_FROM_ABI explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI result
out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const {
return do_out(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const {
return do_unshift(__st, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const {
return do_in(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI int encoding() const _NOEXCEPT { return do_encoding(); }
_LIBCPP_HIDE_FROM_ABI bool always_noconv() const _NOEXCEPT { return do_always_noconv(); }
_LIBCPP_HIDE_FROM_ABI int
length(state_type& __st, const extern_type* __frm, const extern_type* __end, size_t __mx) const {
return do_length(__st, __frm, __end, __mx);
}
_LIBCPP_HIDE_FROM_ABI int max_length() const _NOEXCEPT { return do_max_length(); }
static locale::id id;
protected:
_LIBCPP_HIDE_FROM_ABI explicit codecvt(const char*, size_t __refs = 0) : locale::facet(__refs) {}
~codecvt() override;
virtual result
do_out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const;
virtual result
do_in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const;
virtual result do_unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const;
virtual int do_encoding() const _NOEXCEPT;
virtual bool do_always_noconv() const _NOEXCEPT;
virtual int do_length(state_type& __st, const extern_type* __frm, const extern_type* __end, size_t __mx) const;
virtual int do_max_length() const _NOEXCEPT;
};
// template <> class codecvt<wchar_t, char, mbstate_t>
#if _LIBCPP_HAS_WIDE_CHARACTERS
template <>
class _LIBCPP_EXPORTED_FROM_ABI codecvt<wchar_t, char, mbstate_t> : public locale::facet, public codecvt_base {
__locale::__locale_t __l_;
public:
typedef wchar_t intern_type;
typedef char extern_type;
typedef mbstate_t state_type;
explicit codecvt(size_t __refs = 0);
_LIBCPP_HIDE_FROM_ABI result
out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const {
return do_out(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const {
return do_unshift(__st, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const {
return do_in(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI int encoding() const _NOEXCEPT { return do_encoding(); }
_LIBCPP_HIDE_FROM_ABI bool always_noconv() const _NOEXCEPT { return do_always_noconv(); }
_LIBCPP_HIDE_FROM_ABI int
length(state_type& __st, const extern_type* __frm, const extern_type* __end, size_t __mx) const {
return do_length(__st, __frm, __end, __mx);
}
_LIBCPP_HIDE_FROM_ABI int max_length() const _NOEXCEPT { return do_max_length(); }
static locale::id id;
protected:
explicit codecvt(const char*, size_t __refs = 0);
~codecvt() override;
virtual result
do_out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const;
virtual result
do_in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const;
virtual result do_unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const;
virtual int do_encoding() const _NOEXCEPT;
virtual bool do_always_noconv() const _NOEXCEPT;
virtual int do_length(state_type&, const extern_type* __frm, const extern_type* __end, size_t __mx) const;
virtual int do_max_length() const _NOEXCEPT;
};
#endif // _LIBCPP_HAS_WIDE_CHARACTERS
// template <> class codecvt<char16_t, char, mbstate_t> // deprecated in C++20
template <>
class _LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_EXPORTED_FROM_ABI codecvt<char16_t, char, mbstate_t>
: public locale::facet, public codecvt_base {
public:
typedef char16_t intern_type;
typedef char extern_type;
typedef mbstate_t state_type;
_LIBCPP_HIDE_FROM_ABI explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI result
out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const {
return do_out(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const {
return do_unshift(__st, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI result
in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const {
return do_in(__st, __frm, __frm_end, __frm_nxt, __to, __to_end, __to_nxt);
}
_LIBCPP_HIDE_FROM_ABI int encoding() const _NOEXCEPT { return do_encoding(); }
_LIBCPP_HIDE_FROM_ABI bool always_noconv() const _NOEXCEPT { return do_always_noconv(); }
_LIBCPP_HIDE_FROM_ABI int
length(state_type& __st, const extern_type* __frm, const extern_type* __end, size_t __mx) const {
return do_length(__st, __frm, __end, __mx);
}
_LIBCPP_HIDE_FROM_ABI int max_length() const _NOEXCEPT { return do_max_length(); }
static locale::id id;
protected:
_LIBCPP_HIDE_FROM_ABI explicit codecvt(const char*, size_t __refs = 0) : locale::facet(__refs) {}
~codecvt() override;
virtual result
do_out(state_type& __st,
const intern_type* __frm,
const intern_type* __frm_end,
const intern_type*& __frm_nxt,
extern_type* __to,
extern_type* __to_end,
extern_type*& __to_nxt) const;
virtual result
do_in(state_type& __st,
const extern_type* __frm,
const extern_type* __frm_end,
const extern_type*& __frm_nxt,
intern_type* __to,
intern_type* __to_end,
intern_type*& __to_nxt) const;
virtual result do_unshift(state_type& __st, extern_type* __to, extern_type* __to_end, extern_type*& __to_nxt) const;
virtual int do_encoding() const _NOEXCEPT;
virtual bool do_always_noconv() const _NOEXCEPT;
virtual int do_length(state_type&, const extern_type* __frm, const extern_type* __end, size_t __mx) const;
virtual int do_max_length() const _NOEXCEPT;
};
#if _LIBCPP_HAS_CHAR8_T
// template <> class codecvt<char16_t, char8_t, mbstate_t> // C++20
template <>
class _LIBCPP_EXPORTED_FROM_ABI codecvt<char16_t, char8_t, mbstate_t> : public locale::facet, public codecvt_base {
public:
typedef char16_t intern_type;
typedef char8_t extern_type;
typedef mbstate_t state_type;
_LIBCPP_HIDE_FROM_ABI explicit codecvt(size_t __refs = 0) : locale::facet(__refs) {}
_LIBCPP_HIDE_FROM_ABI result
out(state_type& __st,
const intern_type* __frm,