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char_traits.h.gcov
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-: 0:Source:/usr/include/c++/9/bits/char_traits.h
-: 0:Graph:client.gcno
-: 0:Data:client.gcda
-: 0:Runs:2
-: 1:// Character Traits for use by standard string and iostream -*- C++ -*-
-: 2:
-: 3:// Copyright (C) 1997-2019 Free Software Foundation, Inc.
-: 4://
-: 5:// This file is part of the GNU ISO C++ Library. This library is free
-: 6:// software; you can redistribute it and/or modify it under the
-: 7:// terms of the GNU General Public License as published by the
-: 8:// Free Software Foundation; either version 3, or (at your option)
-: 9:// any later version.
-: 10:
-: 11:// This library is distributed in the hope that it will be useful,
-: 12:// but WITHOUT ANY WARRANTY; without even the implied warranty of
-: 13:// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-: 14:// GNU General Public License for more details.
-: 15:
-: 16:// Under Section 7 of GPL version 3, you are granted additional
-: 17:// permissions described in the GCC Runtime Library Exception, version
-: 18:// 3.1, as published by the Free Software Foundation.
-: 19:
-: 20:// You should have received a copy of the GNU General Public License and
-: 21:// a copy of the GCC Runtime Library Exception along with this program;
-: 22:// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
-: 23:// <http://www.gnu.org/licenses/>.
-: 24:
-: 25:/** @file bits/char_traits.h
-: 26: * This is an internal header file, included by other library headers.
-: 27: * Do not attempt to use it directly. @headername{string}
-: 28: */
-: 29:
-: 30://
-: 31:// ISO C++ 14882: 21 Strings library
-: 32://
-: 33:
-: 34:#ifndef _CHAR_TRAITS_H
-: 35:#define _CHAR_TRAITS_H 1
-: 36:
-: 37:#pragma GCC system_header
-: 38:
-: 39:#include <bits/stl_algobase.h> // std::copy, std::fill_n
-: 40:#include <bits/postypes.h> // For streampos
-: 41:#include <cwchar> // For WEOF, wmemmove, wmemset, etc.
-: 42:
-: 43:#ifndef _GLIBCXX_ALWAYS_INLINE
-: 44:# define _GLIBCXX_ALWAYS_INLINE inline __attribute__((__always_inline__))
-: 45:#endif
-: 46:
-: 47:namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
-: 48:{
-: 49:_GLIBCXX_BEGIN_NAMESPACE_VERSION
-: 50:
-: 51: /**
-: 52: * @brief Mapping from character type to associated types.
-: 53: *
-: 54: * @note This is an implementation class for the generic version
-: 55: * of char_traits. It defines int_type, off_type, pos_type, and
-: 56: * state_type. By default these are unsigned long, streamoff,
-: 57: * streampos, and mbstate_t. Users who need a different set of
-: 58: * types, but who don't need to change the definitions of any function
-: 59: * defined in char_traits, can specialize __gnu_cxx::_Char_types
-: 60: * while leaving __gnu_cxx::char_traits alone. */
-: 61: template<typename _CharT>
-: 62: struct _Char_types
-: 63: {
-: 64: typedef unsigned long int_type;
-: 65: typedef std::streampos pos_type;
-: 66: typedef std::streamoff off_type;
-: 67: typedef std::mbstate_t state_type;
-: 68: };
-: 69:
-: 70:
-: 71: /**
-: 72: * @brief Base class used to implement std::char_traits.
-: 73: *
-: 74: * @note For any given actual character type, this definition is
-: 75: * probably wrong. (Most of the member functions are likely to be
-: 76: * right, but the int_type and state_type typedefs, and the eof()
-: 77: * member function, are likely to be wrong.) The reason this class
-: 78: * exists is so users can specialize it. Classes in namespace std
-: 79: * may not be specialized for fundamental types, but classes in
-: 80: * namespace __gnu_cxx may be.
-: 81: *
-: 82: * See https://gcc.gnu.org/onlinedocs/libstdc++/manual/strings.html#strings.string.character_types
-: 83: * for advice on how to make use of this class for @a unusual character
-: 84: * types. Also, check out include/ext/pod_char_traits.h.
-: 85: */
-: 86: template<typename _CharT>
-: 87: struct char_traits
-: 88: {
-: 89: typedef _CharT char_type;
-: 90: typedef typename _Char_types<_CharT>::int_type int_type;
-: 91: typedef typename _Char_types<_CharT>::pos_type pos_type;
-: 92: typedef typename _Char_types<_CharT>::off_type off_type;
-: 93: typedef typename _Char_types<_CharT>::state_type state_type;
-: 94:
-: 95: static _GLIBCXX14_CONSTEXPR void
-: 96: assign(char_type& __c1, const char_type& __c2)
-: 97: { __c1 = __c2; }
-: 98:
-: 99: static _GLIBCXX_CONSTEXPR bool
-: 100: eq(const char_type& __c1, const char_type& __c2)
-: 101: { return __c1 == __c2; }
-: 102:
-: 103: static _GLIBCXX_CONSTEXPR bool
-: 104: lt(const char_type& __c1, const char_type& __c2)
-: 105: { return __c1 < __c2; }
-: 106:
-: 107: static _GLIBCXX14_CONSTEXPR int
-: 108: compare(const char_type* __s1, const char_type* __s2, std::size_t __n);
-: 109:
-: 110: static _GLIBCXX14_CONSTEXPR std::size_t
-: 111: length(const char_type* __s);
-: 112:
-: 113: static _GLIBCXX14_CONSTEXPR const char_type*
-: 114: find(const char_type* __s, std::size_t __n, const char_type& __a);
-: 115:
-: 116: static char_type*
-: 117: move(char_type* __s1, const char_type* __s2, std::size_t __n);
-: 118:
-: 119: static char_type*
-: 120: copy(char_type* __s1, const char_type* __s2, std::size_t __n);
-: 121:
-: 122: static char_type*
-: 123: assign(char_type* __s, std::size_t __n, char_type __a);
-: 124:
-: 125: static _GLIBCXX_CONSTEXPR char_type
-: 126: to_char_type(const int_type& __c)
-: 127: { return static_cast<char_type>(__c); }
-: 128:
-: 129: static _GLIBCXX_CONSTEXPR int_type
-: 130: to_int_type(const char_type& __c)
-: 131: { return static_cast<int_type>(__c); }
-: 132:
-: 133: static _GLIBCXX_CONSTEXPR bool
-: 134: eq_int_type(const int_type& __c1, const int_type& __c2)
-: 135: { return __c1 == __c2; }
-: 136:
-: 137: static _GLIBCXX_CONSTEXPR int_type
-: 138: eof()
-: 139: { return static_cast<int_type>(_GLIBCXX_STDIO_EOF); }
-: 140:
-: 141: static _GLIBCXX_CONSTEXPR int_type
-: 142: not_eof(const int_type& __c)
-: 143: { return !eq_int_type(__c, eof()) ? __c : to_int_type(char_type()); }
-: 144: };
-: 145:
-: 146: template<typename _CharT>
-: 147: _GLIBCXX14_CONSTEXPR int
-: 148: char_traits<_CharT>::
-: 149: compare(const char_type* __s1, const char_type* __s2, std::size_t __n)
-: 150: {
-: 151: for (std::size_t __i = 0; __i < __n; ++__i)
-: 152: if (lt(__s1[__i], __s2[__i]))
-: 153: return -1;
-: 154: else if (lt(__s2[__i], __s1[__i]))
-: 155: return 1;
-: 156: return 0;
-: 157: }
-: 158:
-: 159: template<typename _CharT>
-: 160: _GLIBCXX14_CONSTEXPR std::size_t
-: 161: char_traits<_CharT>::
-: 162: length(const char_type* __p)
-: 163: {
-: 164: std::size_t __i = 0;
-: 165: while (!eq(__p[__i], char_type()))
-: 166: ++__i;
-: 167: return __i;
-: 168: }
-: 169:
-: 170: template<typename _CharT>
-: 171: _GLIBCXX14_CONSTEXPR const typename char_traits<_CharT>::char_type*
-: 172: char_traits<_CharT>::
-: 173: find(const char_type* __s, std::size_t __n, const char_type& __a)
-: 174: {
-: 175: for (std::size_t __i = 0; __i < __n; ++__i)
-: 176: if (eq(__s[__i], __a))
-: 177: return __s + __i;
-: 178: return 0;
-: 179: }
-: 180:
-: 181: template<typename _CharT>
-: 182: typename char_traits<_CharT>::char_type*
-: 183: char_traits<_CharT>::
-: 184: move(char_type* __s1, const char_type* __s2, std::size_t __n)
-: 185: {
-: 186: if (__n == 0)
-: 187: return __s1;
-: 188: return static_cast<_CharT*>(__builtin_memmove(__s1, __s2,
-: 189: __n * sizeof(char_type)));
-: 190: }
-: 191:
-: 192: template<typename _CharT>
-: 193: typename char_traits<_CharT>::char_type*
-: 194: char_traits<_CharT>::
-: 195: copy(char_type* __s1, const char_type* __s2, std::size_t __n)
-: 196: {
-: 197: // NB: Inline std::copy so no recursive dependencies.
-: 198: std::copy(__s2, __s2 + __n, __s1);
-: 199: return __s1;
-: 200: }
-: 201:
-: 202: template<typename _CharT>
-: 203: typename char_traits<_CharT>::char_type*
-: 204: char_traits<_CharT>::
-: 205: assign(char_type* __s, std::size_t __n, char_type __a)
-: 206: {
-: 207: // NB: Inline std::fill_n so no recursive dependencies.
-: 208: std::fill_n(__s, __n, __a);
-: 209: return __s;
-: 210: }
-: 211:
-: 212:_GLIBCXX_END_NAMESPACE_VERSION
-: 213:} // namespace
-: 214:
-: 215:namespace std _GLIBCXX_VISIBILITY(default)
-: 216:{
-: 217:_GLIBCXX_BEGIN_NAMESPACE_VERSION
-: 218:
-: 219:#if __cplusplus >= 201703L
-: 220:#define __cpp_lib_constexpr_char_traits 201611
-: 221:
-: 222: /**
-: 223: * @brief Determine whether the characters of a NULL-terminated
-: 224: * string are known at compile time.
-: 225: * @param __s The string.
-: 226: *
-: 227: * Assumes that _CharT is a built-in character type.
-: 228: */
-: 229: template<typename _CharT>
-: 230: static _GLIBCXX_ALWAYS_INLINE constexpr bool
-: 231: __constant_string_p(const _CharT* __s)
-: 232: {
-: 233:#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
-: 234: (void) __s;
-: 235: // In constexpr contexts all strings should be constant.
-: 236: return __builtin_is_constant_evaluated();
-: 237:#else
-: 238: while (__builtin_constant_p(*__s) && *__s)
-: 239: __s++;
-: 240: return __builtin_constant_p(*__s);
-: 241:#endif
-: 242: }
-: 243:
-: 244: /**
-: 245: * @brief Determine whether the characters of a character array are
-: 246: * known at compile time.
-: 247: * @param __a The character array.
-: 248: * @param __n Number of characters.
-: 249: *
-: 250: * Assumes that _CharT is a built-in character type.
-: 251: */
-: 252: template<typename _CharT>
-: 253: static _GLIBCXX_ALWAYS_INLINE constexpr bool
-: 254: __constant_char_array_p(const _CharT* __a, size_t __n)
-: 255: {
-: 256:#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
-: 257: (void) __a;
-: 258: (void) __n;
-: 259: // In constexpr contexts all character arrays should be constant.
-: 260: return __builtin_is_constant_evaluated();
-: 261:#else
-: 262: size_t __i = 0;
-: 263: while (__i < __n && __builtin_constant_p(__a[__i]))
-: 264: __i++;
-: 265: return __i == __n;
-: 266:#endif
-: 267: }
-: 268:#endif
-: 269:
-: 270: // 21.1
-: 271: /**
-: 272: * @brief Basis for explicit traits specializations.
-: 273: *
-: 274: * @note For any given actual character type, this definition is
-: 275: * probably wrong. Since this is just a thin wrapper around
-: 276: * __gnu_cxx::char_traits, it is possible to achieve a more
-: 277: * appropriate definition by specializing __gnu_cxx::char_traits.
-: 278: *
-: 279: * See https://gcc.gnu.org/onlinedocs/libstdc++/manual/strings.html#strings.string.character_types
-: 280: * for advice on how to make use of this class for @a unusual character
-: 281: * types. Also, check out include/ext/pod_char_traits.h.
-: 282: */
-: 283: template<class _CharT>
-: 284: struct char_traits : public __gnu_cxx::char_traits<_CharT>
-: 285: { };
-: 286:
-: 287:
-: 288: /// 21.1.3.1 char_traits specializations
-: 289: template<>
-: 290: struct char_traits<char>
-: 291: {
-: 292: typedef char char_type;
-: 293: typedef int int_type;
-: 294: typedef streampos pos_type;
-: 295: typedef streamoff off_type;
-: 296: typedef mbstate_t state_type;
-: 297:
-: 298: static _GLIBCXX17_CONSTEXPR void
-: 299: assign(char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 300: { __c1 = __c2; }
-: 301:
-: 302: static _GLIBCXX_CONSTEXPR bool
-: 303: eq(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 304: { return __c1 == __c2; }
-: 305:
-: 306: static _GLIBCXX_CONSTEXPR bool
-: 307: lt(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 308: {
-: 309: // LWG 467.
-: 310: return (static_cast<unsigned char>(__c1)
-: 311: < static_cast<unsigned char>(__c2));
-: 312: }
-: 313:
-: 314: static _GLIBCXX17_CONSTEXPR int
-: 315: compare(const char_type* __s1, const char_type* __s2, size_t __n)
-: 316: {
-: 317: if (__n == 0)
-: 318: return 0;
-: 319:#if __cplusplus >= 201703L
-: 320: if (__builtin_constant_p(__n)
-: 321: && __constant_char_array_p(__s1, __n)
-: 322: && __constant_char_array_p(__s2, __n))
-: 323: {
-: 324: for (size_t __i = 0; __i < __n; ++__i)
-: 325: if (lt(__s1[__i], __s2[__i]))
-: 326: return -1;
-: 327: else if (lt(__s2[__i], __s1[__i]))
-: 328: return 1;
-: 329: return 0;
-: 330: }
-: 331:#endif
-: 332: return __builtin_memcmp(__s1, __s2, __n);
-: 333: }
-: 334:
-: 335: static _GLIBCXX17_CONSTEXPR size_t
-: 336: length(const char_type* __s)
-: 337: {
-: 338:#if __cplusplus >= 201703L
-: 339: if (__constant_string_p(__s))
-: 340: return __gnu_cxx::char_traits<char_type>::length(__s);
-: 341:#endif
-: 342: return __builtin_strlen(__s);
-: 343: }
-: 344:
-: 345: static _GLIBCXX17_CONSTEXPR const char_type*
-: 346: find(const char_type* __s, size_t __n, const char_type& __a)
-: 347: {
-: 348: if (__n == 0)
-: 349: return 0;
-: 350:#if __cplusplus >= 201703L
-: 351: if (__builtin_constant_p(__n)
-: 352: && __builtin_constant_p(__a)
-: 353: && __constant_char_array_p(__s, __n))
-: 354: return __gnu_cxx::char_traits<char_type>::find(__s, __n, __a);
-: 355:#endif
-: 356: return static_cast<const char_type*>(__builtin_memchr(__s, __a, __n));
-: 357: }
-: 358:
-: 359: static char_type*
-: 360: move(char_type* __s1, const char_type* __s2, size_t __n)
-: 361: {
-: 362: if (__n == 0)
-: 363: return __s1;
-: 364: return static_cast<char_type*>(__builtin_memmove(__s1, __s2, __n));
-: 365: }
-: 366:
-: 367: static char_type*
#####: 368: copy(char_type* __s1, const char_type* __s2, size_t __n)
-: 369: {
#####: 370: if (__n == 0)
#####: 371: return __s1;
#####: 372: return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
-: 373: }
-: 374:
-: 375: static char_type*
-: 376: assign(char_type* __s, size_t __n, char_type __a)
-: 377: {
-: 378: if (__n == 0)
-: 379: return __s;
-: 380: return static_cast<char_type*>(__builtin_memset(__s, __a, __n));
-: 381: }
-: 382:
-: 383: static _GLIBCXX_CONSTEXPR char_type
-: 384: to_char_type(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 385: { return static_cast<char_type>(__c); }
-: 386:
-: 387: // To keep both the byte 0xff and the eof symbol 0xffffffff
-: 388: // from ending up as 0xffffffff.
-: 389: static _GLIBCXX_CONSTEXPR int_type
-: 390: to_int_type(const char_type& __c) _GLIBCXX_NOEXCEPT
-: 391: { return static_cast<int_type>(static_cast<unsigned char>(__c)); }
-: 392:
-: 393: static _GLIBCXX_CONSTEXPR bool
-: 394: eq_int_type(const int_type& __c1, const int_type& __c2) _GLIBCXX_NOEXCEPT
-: 395: { return __c1 == __c2; }
-: 396:
-: 397: static _GLIBCXX_CONSTEXPR int_type
-: 398: eof() _GLIBCXX_NOEXCEPT
-: 399: { return static_cast<int_type>(_GLIBCXX_STDIO_EOF); }
-: 400:
-: 401: static _GLIBCXX_CONSTEXPR int_type
-: 402: not_eof(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 403: { return (__c == eof()) ? 0 : __c; }
-: 404: };
-: 405:
-: 406:
-: 407:#ifdef _GLIBCXX_USE_WCHAR_T
-: 408: /// 21.1.3.2 char_traits specializations
-: 409: template<>
-: 410: struct char_traits<wchar_t>
-: 411: {
-: 412: typedef wchar_t char_type;
-: 413: typedef wint_t int_type;
-: 414: typedef streamoff off_type;
-: 415: typedef wstreampos pos_type;
-: 416: typedef mbstate_t state_type;
-: 417:
-: 418: static _GLIBCXX17_CONSTEXPR void
-: 419: assign(char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 420: { __c1 = __c2; }
-: 421:
-: 422: static _GLIBCXX_CONSTEXPR bool
-: 423: eq(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 424: { return __c1 == __c2; }
-: 425:
-: 426: static _GLIBCXX_CONSTEXPR bool
-: 427: lt(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 428: { return __c1 < __c2; }
-: 429:
-: 430: static _GLIBCXX17_CONSTEXPR int
-: 431: compare(const char_type* __s1, const char_type* __s2, size_t __n)
-: 432: {
-: 433: if (__n == 0)
-: 434: return 0;
-: 435:#if __cplusplus >= 201703L
-: 436: if (__builtin_constant_p(__n)
-: 437: && __constant_char_array_p(__s1, __n)
-: 438: && __constant_char_array_p(__s2, __n))
-: 439: return __gnu_cxx::char_traits<char_type>::compare(__s1, __s2, __n);
-: 440:#endif
-: 441: return wmemcmp(__s1, __s2, __n);
-: 442: }
-: 443:
-: 444: static _GLIBCXX17_CONSTEXPR size_t
-: 445: length(const char_type* __s)
-: 446: {
-: 447:#if __cplusplus >= 201703L
-: 448: if (__constant_string_p(__s))
-: 449: return __gnu_cxx::char_traits<char_type>::length(__s);
-: 450:#endif
-: 451: return wcslen(__s);
-: 452: }
-: 453:
-: 454: static _GLIBCXX17_CONSTEXPR const char_type*
-: 455: find(const char_type* __s, size_t __n, const char_type& __a)
-: 456: {
-: 457: if (__n == 0)
-: 458: return 0;
-: 459:#if __cplusplus >= 201703L
-: 460: if (__builtin_constant_p(__n)
-: 461: && __builtin_constant_p(__a)
-: 462: && __constant_char_array_p(__s, __n))
-: 463: return __gnu_cxx::char_traits<char_type>::find(__s, __n, __a);
-: 464:#endif
-: 465: return wmemchr(__s, __a, __n);
-: 466: }
-: 467:
-: 468: static char_type*
-: 469: move(char_type* __s1, const char_type* __s2, size_t __n)
-: 470: {
-: 471: if (__n == 0)
-: 472: return __s1;
-: 473: return wmemmove(__s1, __s2, __n);
-: 474: }
-: 475:
-: 476: static char_type*
-: 477: copy(char_type* __s1, const char_type* __s2, size_t __n)
-: 478: {
-: 479: if (__n == 0)
-: 480: return __s1;
-: 481: return wmemcpy(__s1, __s2, __n);
-: 482: }
-: 483:
-: 484: static char_type*
-: 485: assign(char_type* __s, size_t __n, char_type __a)
-: 486: {
-: 487: if (__n == 0)
-: 488: return __s;
-: 489: return wmemset(__s, __a, __n);
-: 490: }
-: 491:
-: 492: static _GLIBCXX_CONSTEXPR char_type
-: 493: to_char_type(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 494: { return char_type(__c); }
-: 495:
-: 496: static _GLIBCXX_CONSTEXPR int_type
-: 497: to_int_type(const char_type& __c) _GLIBCXX_NOEXCEPT
-: 498: { return int_type(__c); }
-: 499:
-: 500: static _GLIBCXX_CONSTEXPR bool
-: 501: eq_int_type(const int_type& __c1, const int_type& __c2) _GLIBCXX_NOEXCEPT
-: 502: { return __c1 == __c2; }
-: 503:
-: 504: static _GLIBCXX_CONSTEXPR int_type
-: 505: eof() _GLIBCXX_NOEXCEPT
-: 506: { return static_cast<int_type>(WEOF); }
-: 507:
-: 508: static _GLIBCXX_CONSTEXPR int_type
-: 509: not_eof(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 510: { return eq_int_type(__c, eof()) ? 0 : __c; }
-: 511: };
-: 512:#endif //_GLIBCXX_USE_WCHAR_T
-: 513:
-: 514:#ifdef _GLIBCXX_USE_CHAR8_T
-: 515: template<>
-: 516: struct char_traits<char8_t>
-: 517: {
-: 518: typedef char8_t char_type;
-: 519: typedef unsigned int int_type;
-: 520: typedef u8streampos pos_type;
-: 521: typedef streamoff off_type;
-: 522: typedef mbstate_t state_type;
-: 523:
-: 524: static _GLIBCXX17_CONSTEXPR void
-: 525: assign(char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 526: { __c1 = __c2; }
-: 527:
-: 528: static _GLIBCXX_CONSTEXPR bool
-: 529: eq(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 530: { return __c1 == __c2; }
-: 531:
-: 532: static _GLIBCXX_CONSTEXPR bool
-: 533: lt(const char_type& __c1, const char_type& __c2) _GLIBCXX_NOEXCEPT
-: 534: { return __c1 < __c2; }
-: 535:
-: 536: static _GLIBCXX17_CONSTEXPR int
-: 537: compare(const char_type* __s1, const char_type* __s2, size_t __n)
-: 538: {
-: 539: if (__n == 0)
-: 540: return 0;
-: 541:#if __cplusplus > 201402
-: 542: if (__builtin_constant_p(__n)
-: 543: && __constant_char_array_p(__s1, __n)
-: 544: && __constant_char_array_p(__s2, __n))
-: 545: return __gnu_cxx::char_traits<char_type>::compare(__s1, __s2, __n);
-: 546:#endif
-: 547: return __builtin_memcmp(__s1, __s2, __n);
-: 548: }
-: 549:
-: 550: static _GLIBCXX17_CONSTEXPR size_t
-: 551: length(const char_type* __s)
-: 552: {
-: 553:#if __cplusplus > 201402
-: 554: if (__constant_string_p(__s))
-: 555: return __gnu_cxx::char_traits<char_type>::length(__s);
-: 556:#endif
-: 557: size_t __i = 0;
-: 558: while (!eq(__s[__i], char_type()))
-: 559: ++__i;
-: 560: return __i;
-: 561: }
-: 562:
-: 563: static _GLIBCXX17_CONSTEXPR const char_type*
-: 564: find(const char_type* __s, size_t __n, const char_type& __a)
-: 565: {
-: 566: if (__n == 0)
-: 567: return 0;
-: 568:#if __cplusplus > 201402
-: 569: if (__builtin_constant_p(__n)
-: 570: && __builtin_constant_p(__a)
-: 571: && __constant_char_array_p(__s, __n))
-: 572: return __gnu_cxx::char_traits<char_type>::find(__s, __n, __a);
-: 573:#endif
-: 574: return static_cast<const char_type*>(__builtin_memchr(__s, __a, __n));
-: 575: }
-: 576:
-: 577: static char_type*
-: 578: move(char_type* __s1, const char_type* __s2, size_t __n)
-: 579: {
-: 580: if (__n == 0)
-: 581: return __s1;
-: 582: return static_cast<char_type*>(__builtin_memmove(__s1, __s2, __n));
-: 583: }
-: 584:
-: 585: static char_type*
-: 586: copy(char_type* __s1, const char_type* __s2, size_t __n)
-: 587: {
-: 588: if (__n == 0)
-: 589: return __s1;
-: 590: return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
-: 591: }
-: 592:
-: 593: static char_type*
-: 594: assign(char_type* __s, size_t __n, char_type __a)
-: 595: {
-: 596: if (__n == 0)
-: 597: return __s;
-: 598: return static_cast<char_type*>(__builtin_memset(__s, __a, __n));
-: 599: }
-: 600:
-: 601: static _GLIBCXX_CONSTEXPR char_type
-: 602: to_char_type(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 603: { return char_type(__c); }
-: 604:
-: 605: static _GLIBCXX_CONSTEXPR int_type
-: 606: to_int_type(const char_type& __c) _GLIBCXX_NOEXCEPT
-: 607: { return int_type(__c); }
-: 608:
-: 609: static _GLIBCXX_CONSTEXPR bool
-: 610: eq_int_type(const int_type& __c1, const int_type& __c2) _GLIBCXX_NOEXCEPT
-: 611: { return __c1 == __c2; }
-: 612:
-: 613: static _GLIBCXX_CONSTEXPR int_type
-: 614: eof() _GLIBCXX_NOEXCEPT
-: 615: { return static_cast<int_type>(-1); }
-: 616:
-: 617: static _GLIBCXX_CONSTEXPR int_type
-: 618: not_eof(const int_type& __c) _GLIBCXX_NOEXCEPT
-: 619: { return eq_int_type(__c, eof()) ? 0 : __c; }
-: 620: };
-: 621:#endif //_GLIBCXX_USE_CHAR8_T
-: 622:
-: 623:_GLIBCXX_END_NAMESPACE_VERSION
-: 624:} // namespace
-: 625:
-: 626:#if __cplusplus >= 201103L
-: 627:
-: 628:#include <cstdint>
-: 629:
-: 630:namespace std _GLIBCXX_VISIBILITY(default)
-: 631:{
-: 632:_GLIBCXX_BEGIN_NAMESPACE_VERSION
-: 633:
-: 634: template<>
-: 635: struct char_traits<char16_t>
-: 636: {
-: 637: typedef char16_t char_type;
-: 638:#ifdef _GLIBCXX_USE_C99_STDINT_TR1
-: 639: typedef uint_least16_t int_type;
-: 640:#elif defined __UINT_LEAST16_TYPE__
-: 641: typedef __UINT_LEAST16_TYPE__ int_type;
-: 642:#else
-: 643: typedef make_unsigned<char16_t>::type int_type;
-: 644:#endif
-: 645: typedef streamoff off_type;
-: 646: typedef u16streampos pos_type;
-: 647: typedef mbstate_t state_type;
-: 648:
-: 649: static _GLIBCXX17_CONSTEXPR void
-: 650: assign(char_type& __c1, const char_type& __c2) noexcept
-: 651: { __c1 = __c2; }
-: 652:
-: 653: static constexpr bool
-: 654: eq(const char_type& __c1, const char_type& __c2) noexcept
-: 655: { return __c1 == __c2; }
-: 656:
-: 657: static constexpr bool
-: 658: lt(const char_type& __c1, const char_type& __c2) noexcept
-: 659: { return __c1 < __c2; }
-: 660:
-: 661: static _GLIBCXX17_CONSTEXPR int
-: 662: compare(const char_type* __s1, const char_type* __s2, size_t __n)
-: 663: {
-: 664: for (size_t __i = 0; __i < __n; ++__i)
-: 665: if (lt(__s1[__i], __s2[__i]))
-: 666: return -1;
-: 667: else if (lt(__s2[__i], __s1[__i]))
-: 668: return 1;
-: 669: return 0;
-: 670: }
-: 671:
-: 672: static _GLIBCXX17_CONSTEXPR size_t
-: 673: length(const char_type* __s)
-: 674: {
-: 675: size_t __i = 0;
-: 676: while (!eq(__s[__i], char_type()))
-: 677: ++__i;
-: 678: return __i;
-: 679: }
-: 680:
-: 681: static _GLIBCXX17_CONSTEXPR const char_type*
-: 682: find(const char_type* __s, size_t __n, const char_type& __a)
-: 683: {
-: 684: for (size_t __i = 0; __i < __n; ++__i)
-: 685: if (eq(__s[__i], __a))
-: 686: return __s + __i;
-: 687: return 0;
-: 688: }
-: 689:
-: 690: static char_type*
-: 691: move(char_type* __s1, const char_type* __s2, size_t __n)
-: 692: {
-: 693: if (__n == 0)
-: 694: return __s1;
-: 695: return (static_cast<char_type*>
-: 696: (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
-: 697: }
-: 698:
-: 699: static char_type*
-: 700: copy(char_type* __s1, const char_type* __s2, size_t __n)
-: 701: {
-: 702: if (__n == 0)
-: 703: return __s1;
-: 704: return (static_cast<char_type*>
-: 705: (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
-: 706: }
-: 707:
-: 708: static char_type*
-: 709: assign(char_type* __s, size_t __n, char_type __a)
-: 710: {
-: 711: for (size_t __i = 0; __i < __n; ++__i)
-: 712: assign(__s[__i], __a);
-: 713: return __s;
-: 714: }
-: 715:
-: 716: static constexpr char_type
-: 717: to_char_type(const int_type& __c) noexcept
-: 718: { return char_type(__c); }
-: 719:
-: 720: static constexpr int_type
-: 721: to_int_type(const char_type& __c) noexcept
-: 722: { return __c == eof() ? int_type(0xfffd) : int_type(__c); }
-: 723:
-: 724: static constexpr bool
-: 725: eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
-: 726: { return __c1 == __c2; }
-: 727:
-: 728: static constexpr int_type
-: 729: eof() noexcept
-: 730: { return static_cast<int_type>(-1); }
-: 731:
-: 732: static constexpr int_type
-: 733: not_eof(const int_type& __c) noexcept
-: 734: { return eq_int_type(__c, eof()) ? 0 : __c; }
-: 735: };
-: 736:
-: 737: template<>
-: 738: struct char_traits<char32_t>
-: 739: {
-: 740: typedef char32_t char_type;
-: 741:#ifdef _GLIBCXX_USE_C99_STDINT_TR1
-: 742: typedef uint_least32_t int_type;
-: 743:#elif defined __UINT_LEAST32_TYPE__
-: 744: typedef __UINT_LEAST32_TYPE__ int_type;
-: 745:#else
-: 746: typedef make_unsigned<char32_t>::type int_type;
-: 747:#endif
-: 748: typedef streamoff off_type;
-: 749: typedef u32streampos pos_type;
-: 750: typedef mbstate_t state_type;
-: 751:
-: 752: static _GLIBCXX17_CONSTEXPR void
-: 753: assign(char_type& __c1, const char_type& __c2) noexcept
-: 754: { __c1 = __c2; }
-: 755:
-: 756: static constexpr bool
-: 757: eq(const char_type& __c1, const char_type& __c2) noexcept
-: 758: { return __c1 == __c2; }
-: 759:
-: 760: static constexpr bool
-: 761: lt(const char_type& __c1, const char_type& __c2) noexcept
-: 762: { return __c1 < __c2; }
-: 763:
-: 764: static _GLIBCXX17_CONSTEXPR int
-: 765: compare(const char_type* __s1, const char_type* __s2, size_t __n)
-: 766: {
-: 767: for (size_t __i = 0; __i < __n; ++__i)
-: 768: if (lt(__s1[__i], __s2[__i]))
-: 769: return -1;
-: 770: else if (lt(__s2[__i], __s1[__i]))
-: 771: return 1;
-: 772: return 0;
-: 773: }
-: 774:
-: 775: static _GLIBCXX17_CONSTEXPR size_t
-: 776: length(const char_type* __s)
-: 777: {
-: 778: size_t __i = 0;
-: 779: while (!eq(__s[__i], char_type()))
-: 780: ++__i;
-: 781: return __i;
-: 782: }
-: 783:
-: 784: static _GLIBCXX17_CONSTEXPR const char_type*
-: 785: find(const char_type* __s, size_t __n, const char_type& __a)
-: 786: {
-: 787: for (size_t __i = 0; __i < __n; ++__i)
-: 788: if (eq(__s[__i], __a))
-: 789: return __s + __i;
-: 790: return 0;
-: 791: }
-: 792:
-: 793: static char_type*
-: 794: move(char_type* __s1, const char_type* __s2, size_t __n)
-: 795: {
-: 796: if (__n == 0)
-: 797: return __s1;
-: 798: return (static_cast<char_type*>
-: 799: (__builtin_memmove(__s1, __s2, __n * sizeof(char_type))));
-: 800: }
-: 801:
-: 802: static char_type*
-: 803: copy(char_type* __s1, const char_type* __s2, size_t __n)
-: 804: {
-: 805: if (__n == 0)
-: 806: return __s1;
-: 807: return (static_cast<char_type*>
-: 808: (__builtin_memcpy(__s1, __s2, __n * sizeof(char_type))));
-: 809: }
-: 810:
-: 811: static char_type*
-: 812: assign(char_type* __s, size_t __n, char_type __a)
-: 813: {
-: 814: for (size_t __i = 0; __i < __n; ++__i)
-: 815: assign(__s[__i], __a);
-: 816: return __s;
-: 817: }
-: 818:
-: 819: static constexpr char_type
-: 820: to_char_type(const int_type& __c) noexcept
-: 821: { return char_type(__c); }
-: 822:
-: 823: static constexpr int_type
-: 824: to_int_type(const char_type& __c) noexcept
-: 825: { return int_type(__c); }
-: 826:
-: 827: static constexpr bool
-: 828: eq_int_type(const int_type& __c1, const int_type& __c2) noexcept
-: 829: { return __c1 == __c2; }
-: 830:
-: 831: static constexpr int_type
-: 832: eof() noexcept
-: 833: { return static_cast<int_type>(-1); }
-: 834:
-: 835: static constexpr int_type
-: 836: not_eof(const int_type& __c) noexcept
-: 837: { return eq_int_type(__c, eof()) ? 0 : __c; }
-: 838: };
-: 839:
-: 840:_GLIBCXX_END_NAMESPACE_VERSION
-: 841:} // namespace
-: 842:
-: 843:#endif // C++11
-: 844:
-: 845:#endif // _CHAR_TRAITS_H