35#define _CHAR_TRAITS_H 1
37#pragma GCC system_header
43namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
45_GLIBCXX_BEGIN_NAMESPACE_VERSION
57 template<
typename _CharT>
60 typedef unsigned long int_type;
63 typedef std::mbstate_t state_type;
82 template<
typename _CharT>
85 typedef _CharT char_type;
86 typedef typename _Char_types<_CharT>::int_type int_type;
89 typedef typename _Char_types<_CharT>::state_type state_type;
92 assign(char_type& __c1,
const char_type& __c2)
95 static _GLIBCXX_CONSTEXPR
bool
96 eq(
const char_type& __c1,
const char_type& __c2)
97 {
return __c1 == __c2; }
99 static _GLIBCXX_CONSTEXPR
bool
100 lt(
const char_type& __c1,
const char_type& __c2)
101 {
return __c1 < __c2; }
104 compare(
const char_type* __s1,
const char_type* __s2, std::size_t __n);
107 length(
const char_type* __s);
109 static const char_type*
110 find(
const char_type* __s, std::size_t __n,
const char_type& __a);
113 move(char_type* __s1,
const char_type* __s2, std::size_t __n);
116 copy(char_type* __s1,
const char_type* __s2, std::size_t __n);
119 assign(char_type* __s, std::size_t __n, char_type __a);
121 static _GLIBCXX_CONSTEXPR char_type
122 to_char_type(
const int_type& __c)
123 {
return static_cast<char_type
>(__c); }
125 static _GLIBCXX_CONSTEXPR int_type
126 to_int_type(
const char_type& __c)
127 {
return static_cast<int_type
>(__c); }
129 static _GLIBCXX_CONSTEXPR
bool
130 eq_int_type(
const int_type& __c1,
const int_type& __c2)
131 {
return __c1 == __c2; }
133 static _GLIBCXX_CONSTEXPR int_type
135 {
return static_cast<int_type
>(_GLIBCXX_STDIO_EOF); }
137 static _GLIBCXX_CONSTEXPR int_type
138 not_eof(
const int_type& __c)
139 {
return !eq_int_type(__c, eof()) ? __c : to_int_type(char_type()); }
142 template<
typename _CharT>
145 compare(
const char_type* __s1,
const char_type* __s2, std::size_t __n)
147 for (std::size_t __i = 0; __i < __n; ++__i)
148 if (lt(__s1[__i], __s2[__i]))
150 else if (lt(__s2[__i], __s1[__i]))
155 template<
typename _CharT>
157 char_traits<_CharT>::
158 length(
const char_type* __p)
161 while (!eq(__p[__i], char_type()))
166 template<
typename _CharT>
167 const typename char_traits<_CharT>::char_type*
168 char_traits<_CharT>::
169 find(
const char_type* __s, std::size_t __n,
const char_type& __a)
171 for (std::size_t __i = 0; __i < __n; ++__i)
172 if (eq(__s[__i], __a))
177 template<
typename _CharT>
178 typename char_traits<_CharT>::char_type*
179 char_traits<_CharT>::
180 move(char_type* __s1,
const char_type* __s2, std::size_t __n)
182 return static_cast<_CharT*
>(__builtin_memmove(__s1, __s2,
183 __n *
sizeof(char_type)));
186 template<
typename _CharT>
187 typename char_traits<_CharT>::char_type*
188 char_traits<_CharT>::
189 copy(char_type* __s1,
const char_type* __s2, std::size_t __n)
192 std::copy(__s2, __s2 + __n, __s1);
196 template<
typename _CharT>
197 typename char_traits<_CharT>::char_type*
198 char_traits<_CharT>::
199 assign(char_type* __s, std::size_t __n, char_type __a)
202 std::fill_n(__s, __n, __a);
206_GLIBCXX_END_NAMESPACE_VERSION
209namespace std _GLIBCXX_VISIBILITY(default)
211_GLIBCXX_BEGIN_NAMESPACE_VERSION
226 template<
class _CharT>
235 typedef char char_type;
236 typedef int int_type;
239 typedef mbstate_t state_type;
247 {
return __c1 == __c2; }
253 return (
static_cast<unsigned char>(__c1)
254 <
static_cast<unsigned char>(__c2));
258 compare(
const char_type*
__s1,
const char_type*
__s2,
size_t __n)
266 length(
const char_type*
__s)
269 static const char_type*
270 find(
const char_type*
__s,
size_t __n,
const char_type& __a)
278 move(char_type*
__s1,
const char_type*
__s2,
size_t __n)
286 copy(char_type*
__s1,
const char_type*
__s2,
size_t __n)
294 assign(char_type*
__s,
size_t __n, char_type __a)
303 {
return static_cast<char_type
>(__c); }
309 {
return static_cast<int_type
>(
static_cast<unsigned char>(__c)); }
313 {
return __c1 == __c2; }
317 {
return static_cast<int_type
>(_GLIBCXX_STDIO_EOF); }
321 {
return (__c == eof()) ? 0 : __c; }
325#ifdef _GLIBCXX_USE_WCHAR_T
330 typedef wchar_t char_type;
331 typedef wint_t int_type;
334 typedef mbstate_t state_type;
342 {
return __c1 == __c2; }
346 {
return __c1 < __c2; }
349 compare(
const char_type*
__s1,
const char_type*
__s2,
size_t __n)
357 length(
const char_type*
__s)
360 static const char_type*
361 find(
const char_type*
__s,
size_t __n,
const char_type& __a)
365 return wmemchr(
__s, __a, __n);
369 move(char_type*
__s1,
const char_type*
__s2,
size_t __n)
377 copy(char_type*
__s1,
const char_type*
__s2,
size_t __n)
385 assign(char_type*
__s,
size_t __n, char_type __a)
394 {
return char_type(__c); }
398 {
return int_type(__c); }
402 {
return __c1 == __c2; }
406 {
return static_cast<int_type
>(
WEOF); }
410 {
return eq_int_type(__c, eof()) ? 0 : __c; }
414_GLIBCXX_END_NAMESPACE_VERSION
417#if ((__cplusplus >= 201103L) \
418 && defined(_GLIBCXX_USE_C99_STDINT_TR1))
422namespace std _GLIBCXX_VISIBILITY(default)
424_GLIBCXX_BEGIN_NAMESPACE_VERSION
427 struct char_traits<char16_t>
429 typedef char16_t char_type;
430 typedef uint_least16_t int_type;
433 typedef mbstate_t state_type;
436 assign(char_type& __c1,
const char_type& __c2)
noexcept
439 static constexpr bool
440 eq(
const char_type& __c1,
const char_type& __c2)
noexcept
441 {
return __c1 == __c2; }
443 static constexpr bool
444 lt(
const char_type& __c1,
const char_type& __c2)
noexcept
445 {
return __c1 < __c2; }
448 compare(
const char_type* __s1,
const char_type* __s2,
size_t __n)
450 for (
size_t __i = 0; __i < __n; ++__i)
451 if (lt(__s1[__i], __s2[__i]))
453 else if (lt(__s2[__i], __s1[__i]))
459 length(
const char_type* __s)
462 while (!eq(__s[__i], char_type()))
467 static const char_type*
468 find(
const char_type* __s,
size_t __n,
const char_type& __a)
470 for (
size_t __i = 0; __i < __n; ++__i)
471 if (eq(__s[__i], __a))
477 move(char_type* __s1,
const char_type* __s2,
size_t __n)
481 return (
static_cast<char_type*
>
482 (__builtin_memmove(__s1, __s2, __n *
sizeof(char_type))));
486 copy(char_type* __s1,
const char_type* __s2,
size_t __n)
490 return (
static_cast<char_type*
>
491 (__builtin_memcpy(__s1, __s2, __n *
sizeof(char_type))));
495 assign(char_type* __s,
size_t __n, char_type __a)
497 for (
size_t __i = 0; __i < __n; ++__i)
498 assign(__s[__i], __a);
502 static constexpr char_type
503 to_char_type(
const int_type& __c)
noexcept
504 {
return char_type(__c); }
506 static constexpr int_type
507 to_int_type(
const char_type& __c)
noexcept
508 {
return int_type(__c); }
510 static constexpr bool
511 eq_int_type(
const int_type& __c1,
const int_type& __c2)
noexcept
512 {
return __c1 == __c2; }
514 static constexpr int_type
516 {
return static_cast<int_type
>(-1); }
518 static constexpr int_type
519 not_eof(
const int_type& __c)
noexcept
520 {
return eq_int_type(__c, eof()) ? 0 : __c; }
524 struct char_traits<char32_t>
526 typedef char32_t char_type;
527 typedef uint_least32_t int_type;
530 typedef mbstate_t state_type;
533 assign(char_type& __c1,
const char_type& __c2)
noexcept
536 static constexpr bool
537 eq(
const char_type& __c1,
const char_type& __c2)
noexcept
538 {
return __c1 == __c2; }
540 static constexpr bool
541 lt(
const char_type& __c1,
const char_type& __c2)
noexcept
542 {
return __c1 < __c2; }
545 compare(
const char_type* __s1,
const char_type* __s2,
size_t __n)
547 for (
size_t __i = 0; __i < __n; ++__i)
548 if (lt(__s1[__i], __s2[__i]))
550 else if (lt(__s2[__i], __s1[__i]))
556 length(
const char_type* __s)
559 while (!eq(__s[__i], char_type()))
564 static const char_type*
565 find(
const char_type* __s,
size_t __n,
const char_type& __a)
567 for (
size_t __i = 0; __i < __n; ++__i)
568 if (eq(__s[__i], __a))
574 move(char_type* __s1,
const char_type* __s2,
size_t __n)
578 return (
static_cast<char_type*
>
579 (__builtin_memmove(__s1, __s2, __n *
sizeof(char_type))));
583 copy(char_type* __s1,
const char_type* __s2,
size_t __n)
587 return (
static_cast<char_type*
>
588 (__builtin_memcpy(__s1, __s2, __n *
sizeof(char_type))));
592 assign(char_type* __s,
size_t __n, char_type __a)
594 for (
size_t __i = 0; __i < __n; ++__i)
595 assign(__s[__i], __a);
599 static constexpr char_type
600 to_char_type(
const int_type& __c)
noexcept
601 {
return char_type(__c); }
603 static constexpr int_type
604 to_int_type(
const char_type& __c)
noexcept
605 {
return int_type(__c); }
607 static constexpr bool
608 eq_int_type(
const int_type& __c1,
const int_type& __c2)
noexcept
609 {
return __c1 == __c2; }
611 static constexpr int_type
613 {
return static_cast<int_type
>(-1); }
615 static constexpr int_type
616 not_eof(
const int_type& __c)
noexcept
617 {
return eq_int_type(__c, eof()) ? 0 : __c; }
620_GLIBCXX_END_NAMESPACE_VERSION
ISO C++ entities toplevel namespace is std.
fpos< mbstate_t > u32streampos
File position for char32_t streams.
long long streamoff
Type used by fpos, char_traits<char>, and char_traits<wchar_t>.
fpos< mbstate_t > u16streampos
File position for char16_t streams.
GNU extensions for public use.
Mapping from character type to associated types.
Base class used to implement std::char_traits.
Basis for explicit traits specializations.
Class representing stream positions.