libstdc++
locale_facets.h
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1 // Locale support -*- C++ -*-
2 
3 // Copyright (C) 1997-2018 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
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22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 /** @file bits/locale_facets.h
26  * This is an internal header file, included by other library headers.
27  * Do not attempt to use it directly. @headername{locale}
28  */
29 
30 //
31 // ISO C++ 14882: 22.1 Locales
32 //
33 
34 #ifndef _LOCALE_FACETS_H
35 #define _LOCALE_FACETS_H 1
36 
37 #pragma GCC system_header
38 
39 #include <cwctype> // For wctype_t
40 #include <cctype>
41 #include <bits/ctype_base.h>
42 #include <iosfwd>
43 #include <bits/ios_base.h> // For ios_base, ios_base::iostate
44 #include <streambuf>
45 #include <bits/cpp_type_traits.h>
46 #include <ext/type_traits.h>
47 #include <ext/numeric_traits.h>
48 #include <bits/streambuf_iterator.h>
49 
50 namespace std _GLIBCXX_VISIBILITY(default)
51 {
52 _GLIBCXX_BEGIN_NAMESPACE_VERSION
53 
54  // NB: Don't instantiate required wchar_t facets if no wchar_t support.
55 #ifdef _GLIBCXX_USE_WCHAR_T
56 # define _GLIBCXX_NUM_FACETS 28
57 # define _GLIBCXX_NUM_CXX11_FACETS 16
58 #else
59 # define _GLIBCXX_NUM_FACETS 14
60 # define _GLIBCXX_NUM_CXX11_FACETS 8
61 #endif
62 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
63 # define _GLIBCXX_NUM_UNICODE_FACETS 2
64 #else
65 # define _GLIBCXX_NUM_UNICODE_FACETS 0
66 #endif
67 
68  // Convert string to numeric value of type _Tp and store results.
69  // NB: This is specialized for all required types, there is no
70  // generic definition.
71  template<typename _Tp>
72  void
73  __convert_to_v(const char*, _Tp&, ios_base::iostate&,
74  const __c_locale&) throw();
75 
76  // Explicit specializations for required types.
77  template<>
78  void
79  __convert_to_v(const char*, float&, ios_base::iostate&,
80  const __c_locale&) throw();
81 
82  template<>
83  void
84  __convert_to_v(const char*, double&, ios_base::iostate&,
85  const __c_locale&) throw();
86 
87  template<>
88  void
89  __convert_to_v(const char*, long double&, ios_base::iostate&,
90  const __c_locale&) throw();
91 
92  // NB: __pad is a struct, rather than a function, so it can be
93  // partially-specialized.
94  template<typename _CharT, typename _Traits>
95  struct __pad
96  {
97  static void
98  _S_pad(ios_base& __io, _CharT __fill, _CharT* __news,
99  const _CharT* __olds, streamsize __newlen, streamsize __oldlen);
100  };
101 
102  // Used by both numeric and monetary facets.
103  // Inserts "group separator" characters into an array of characters.
104  // It's recursive, one iteration per group. It moves the characters
105  // in the buffer this way: "xxxx12345" -> "12,345xxx". Call this
106  // only with __gsize != 0.
107  template<typename _CharT>
108  _CharT*
109  __add_grouping(_CharT* __s, _CharT __sep,
110  const char* __gbeg, size_t __gsize,
111  const _CharT* __first, const _CharT* __last);
112 
113  // This template permits specializing facet output code for
114  // ostreambuf_iterator. For ostreambuf_iterator, sputn is
115  // significantly more efficient than incrementing iterators.
116  template<typename _CharT>
117  inline
118  ostreambuf_iterator<_CharT>
119  __write(ostreambuf_iterator<_CharT> __s, const _CharT* __ws, int __len)
120  {
121  __s._M_put(__ws, __len);
122  return __s;
123  }
124 
125  // This is the unspecialized form of the template.
126  template<typename _CharT, typename _OutIter>
127  inline
128  _OutIter
129  __write(_OutIter __s, const _CharT* __ws, int __len)
130  {
131  for (int __j = 0; __j < __len; __j++, ++__s)
132  *__s = __ws[__j];
133  return __s;
134  }
135 
136 
137  // 22.2.1.1 Template class ctype
138  // Include host and configuration specific ctype enums for ctype_base.
139 
140  /**
141  * @brief Common base for ctype facet
142  *
143  * This template class provides implementations of the public functions
144  * that forward to the protected virtual functions.
145  *
146  * This template also provides abstract stubs for the protected virtual
147  * functions.
148  */
149  template<typename _CharT>
150  class __ctype_abstract_base : public locale::facet, public ctype_base
151  {
152  public:
153  // Types:
154  /// Typedef for the template parameter
155  typedef _CharT char_type;
156 
157  /**
158  * @brief Test char_type classification.
159  *
160  * This function finds a mask M for @a __c and compares it to
161  * mask @a __m. It does so by returning the value of
162  * ctype<char_type>::do_is().
163  *
164  * @param __c The char_type to compare the mask of.
165  * @param __m The mask to compare against.
166  * @return (M & __m) != 0.
167  */
168  bool
169  is(mask __m, char_type __c) const
170  { return this->do_is(__m, __c); }
171 
172  /**
173  * @brief Return a mask array.
174  *
175  * This function finds the mask for each char_type in the range [lo,hi)
176  * and successively writes it to vec. vec must have as many elements
177  * as the char array. It does so by returning the value of
178  * ctype<char_type>::do_is().
179  *
180  * @param __lo Pointer to start of range.
181  * @param __hi Pointer to end of range.
182  * @param __vec Pointer to an array of mask storage.
183  * @return @a __hi.
184  */
185  const char_type*
186  is(const char_type *__lo, const char_type *__hi, mask *__vec) const
187  { return this->do_is(__lo, __hi, __vec); }
188 
189  /**
190  * @brief Find char_type matching a mask
191  *
192  * This function searches for and returns the first char_type c in
193  * [lo,hi) for which is(m,c) is true. It does so by returning
194  * ctype<char_type>::do_scan_is().
195  *
196  * @param __m The mask to compare against.
197  * @param __lo Pointer to start of range.
198  * @param __hi Pointer to end of range.
199  * @return Pointer to matching char_type if found, else @a __hi.
200  */
201  const char_type*
202  scan_is(mask __m, const char_type* __lo, const char_type* __hi) const
203  { return this->do_scan_is(__m, __lo, __hi); }
204 
205  /**
206  * @brief Find char_type not matching a mask
207  *
208  * This function searches for and returns the first char_type c in
209  * [lo,hi) for which is(m,c) is false. It does so by returning
210  * ctype<char_type>::do_scan_not().
211  *
212  * @param __m The mask to compare against.
213  * @param __lo Pointer to first char in range.
214  * @param __hi Pointer to end of range.
215  * @return Pointer to non-matching char if found, else @a __hi.
216  */
217  const char_type*
218  scan_not(mask __m, const char_type* __lo, const char_type* __hi) const
219  { return this->do_scan_not(__m, __lo, __hi); }
220 
221  /**
222  * @brief Convert to uppercase.
223  *
224  * This function converts the argument to uppercase if possible.
225  * If not possible (for example, '2'), returns the argument. It does
226  * so by returning ctype<char_type>::do_toupper().
227  *
228  * @param __c The char_type to convert.
229  * @return The uppercase char_type if convertible, else @a __c.
230  */
231  char_type
232  toupper(char_type __c) const
233  { return this->do_toupper(__c); }
234 
235  /**
236  * @brief Convert array to uppercase.
237  *
238  * This function converts each char_type in the range [lo,hi) to
239  * uppercase if possible. Other elements remain untouched. It does so
240  * by returning ctype<char_type>:: do_toupper(lo, hi).
241  *
242  * @param __lo Pointer to start of range.
243  * @param __hi Pointer to end of range.
244  * @return @a __hi.
245  */
246  const char_type*
247  toupper(char_type *__lo, const char_type* __hi) const
248  { return this->do_toupper(__lo, __hi); }
249 
250  /**
251  * @brief Convert to lowercase.
252  *
253  * This function converts the argument to lowercase if possible. If
254  * not possible (for example, '2'), returns the argument. It does so
255  * by returning ctype<char_type>::do_tolower(c).
256  *
257  * @param __c The char_type to convert.
258  * @return The lowercase char_type if convertible, else @a __c.
259  */
260  char_type
261  tolower(char_type __c) const
262  { return this->do_tolower(__c); }
263 
264  /**
265  * @brief Convert array to lowercase.
266  *
267  * This function converts each char_type in the range [__lo,__hi) to
268  * lowercase if possible. Other elements remain untouched. It does so
269  * by returning ctype<char_type>:: do_tolower(__lo, __hi).
270  *
271  * @param __lo Pointer to start of range.
272  * @param __hi Pointer to end of range.
273  * @return @a __hi.
274  */
275  const char_type*
276  tolower(char_type* __lo, const char_type* __hi) const
277  { return this->do_tolower(__lo, __hi); }
278 
279  /**
280  * @brief Widen char to char_type
281  *
282  * This function converts the char argument to char_type using the
283  * simplest reasonable transformation. It does so by returning
284  * ctype<char_type>::do_widen(c).
285  *
286  * Note: this is not what you want for codepage conversions. See
287  * codecvt for that.
288  *
289  * @param __c The char to convert.
290  * @return The converted char_type.
291  */
292  char_type
293  widen(char __c) const
294  { return this->do_widen(__c); }
295 
296  /**
297  * @brief Widen array to char_type
298  *
299  * This function converts each char in the input to char_type using the
300  * simplest reasonable transformation. It does so by returning
301  * ctype<char_type>::do_widen(c).
302  *
303  * Note: this is not what you want for codepage conversions. See
304  * codecvt for that.
305  *
306  * @param __lo Pointer to start of range.
307  * @param __hi Pointer to end of range.
308  * @param __to Pointer to the destination array.
309  * @return @a __hi.
310  */
311  const char*
312  widen(const char* __lo, const char* __hi, char_type* __to) const
313  { return this->do_widen(__lo, __hi, __to); }
314 
315  /**
316  * @brief Narrow char_type to char
317  *
318  * This function converts the char_type to char using the simplest
319  * reasonable transformation. If the conversion fails, dfault is
320  * returned instead. It does so by returning
321  * ctype<char_type>::do_narrow(__c).
322  *
323  * Note: this is not what you want for codepage conversions. See
324  * codecvt for that.
325  *
326  * @param __c The char_type to convert.
327  * @param __dfault Char to return if conversion fails.
328  * @return The converted char.
329  */
330  char
331  narrow(char_type __c, char __dfault) const
332  { return this->do_narrow(__c, __dfault); }
333 
334  /**
335  * @brief Narrow array to char array
336  *
337  * This function converts each char_type in the input to char using the
338  * simplest reasonable transformation and writes the results to the
339  * destination array. For any char_type in the input that cannot be
340  * converted, @a dfault is used instead. It does so by returning
341  * ctype<char_type>::do_narrow(__lo, __hi, __dfault, __to).
342  *
343  * Note: this is not what you want for codepage conversions. See
344  * codecvt for that.
345  *
346  * @param __lo Pointer to start of range.
347  * @param __hi Pointer to end of range.
348  * @param __dfault Char to use if conversion fails.
349  * @param __to Pointer to the destination array.
350  * @return @a __hi.
351  */
352  const char_type*
353  narrow(const char_type* __lo, const char_type* __hi,
354  char __dfault, char* __to) const
355  { return this->do_narrow(__lo, __hi, __dfault, __to); }
356 
357  protected:
358  explicit
359  __ctype_abstract_base(size_t __refs = 0): facet(__refs) { }
360 
361  virtual
362  ~__ctype_abstract_base() { }
363 
364  /**
365  * @brief Test char_type classification.
366  *
367  * This function finds a mask M for @a c and compares it to mask @a m.
368  *
369  * do_is() is a hook for a derived facet to change the behavior of
370  * classifying. do_is() must always return the same result for the
371  * same input.
372  *
373  * @param __c The char_type to find the mask of.
374  * @param __m The mask to compare against.
375  * @return (M & __m) != 0.
376  */
377  virtual bool
378  do_is(mask __m, char_type __c) const = 0;
379 
380  /**
381  * @brief Return a mask array.
382  *
383  * This function finds the mask for each char_type in the range [lo,hi)
384  * and successively writes it to vec. vec must have as many elements
385  * as the input.
386  *
387  * do_is() is a hook for a derived facet to change the behavior of
388  * classifying. do_is() must always return the same result for the
389  * same input.
390  *
391  * @param __lo Pointer to start of range.
392  * @param __hi Pointer to end of range.
393  * @param __vec Pointer to an array of mask storage.
394  * @return @a __hi.
395  */
396  virtual const char_type*
397  do_is(const char_type* __lo, const char_type* __hi,
398  mask* __vec) const = 0;
399 
400  /**
401  * @brief Find char_type matching mask
402  *
403  * This function searches for and returns the first char_type c in
404  * [__lo,__hi) for which is(__m,c) is true.
405  *
406  * do_scan_is() is a hook for a derived facet to change the behavior of
407  * match searching. do_is() must always return the same result for the
408  * same input.
409  *
410  * @param __m The mask to compare against.
411  * @param __lo Pointer to start of range.
412  * @param __hi Pointer to end of range.
413  * @return Pointer to a matching char_type if found, else @a __hi.
414  */
415  virtual const char_type*
416  do_scan_is(mask __m, const char_type* __lo,
417  const char_type* __hi) const = 0;
418 
419  /**
420  * @brief Find char_type not matching mask
421  *
422  * This function searches for and returns a pointer to the first
423  * char_type c of [lo,hi) for which is(m,c) is false.
424  *
425  * do_scan_is() is a hook for a derived facet to change the behavior of
426  * match searching. do_is() must always return the same result for the
427  * same input.
428  *
429  * @param __m The mask to compare against.
430  * @param __lo Pointer to start of range.
431  * @param __hi Pointer to end of range.
432  * @return Pointer to a non-matching char_type if found, else @a __hi.
433  */
434  virtual const char_type*
435  do_scan_not(mask __m, const char_type* __lo,
436  const char_type* __hi) const = 0;
437 
438  /**
439  * @brief Convert to uppercase.
440  *
441  * This virtual function converts the char_type argument to uppercase
442  * if possible. If not possible (for example, '2'), returns the
443  * argument.
444  *
445  * do_toupper() is a hook for a derived facet to change the behavior of
446  * uppercasing. do_toupper() must always return the same result for
447  * the same input.
448  *
449  * @param __c The char_type to convert.
450  * @return The uppercase char_type if convertible, else @a __c.
451  */
452  virtual char_type
453  do_toupper(char_type __c) const = 0;
454 
455  /**
456  * @brief Convert array to uppercase.
457  *
458  * This virtual function converts each char_type in the range [__lo,__hi)
459  * to uppercase if possible. Other elements remain untouched.
460  *
461  * do_toupper() is a hook for a derived facet to change the behavior of
462  * uppercasing. do_toupper() must always return the same result for
463  * the same input.
464  *
465  * @param __lo Pointer to start of range.
466  * @param __hi Pointer to end of range.
467  * @return @a __hi.
468  */
469  virtual const char_type*
470  do_toupper(char_type* __lo, const char_type* __hi) const = 0;
471 
472  /**
473  * @brief Convert to lowercase.
474  *
475  * This virtual function converts the argument to lowercase if
476  * possible. If not possible (for example, '2'), returns the argument.
477  *
478  * do_tolower() is a hook for a derived facet to change the behavior of
479  * lowercasing. do_tolower() must always return the same result for
480  * the same input.
481  *
482  * @param __c The char_type to convert.
483  * @return The lowercase char_type if convertible, else @a __c.
484  */
485  virtual char_type
486  do_tolower(char_type __c) const = 0;
487 
488  /**
489  * @brief Convert array to lowercase.
490  *
491  * This virtual function converts each char_type in the range [__lo,__hi)
492  * to lowercase if possible. Other elements remain untouched.
493  *
494  * do_tolower() is a hook for a derived facet to change the behavior of
495  * lowercasing. do_tolower() must always return the same result for
496  * the same input.
497  *
498  * @param __lo Pointer to start of range.
499  * @param __hi Pointer to end of range.
500  * @return @a __hi.
501  */
502  virtual const char_type*
503  do_tolower(char_type* __lo, const char_type* __hi) const = 0;
504 
505  /**
506  * @brief Widen char
507  *
508  * This virtual function converts the char to char_type using the
509  * simplest reasonable transformation.
510  *
511  * do_widen() is a hook for a derived facet to change the behavior of
512  * widening. do_widen() must always return the same result for the
513  * same input.
514  *
515  * Note: this is not what you want for codepage conversions. See
516  * codecvt for that.
517  *
518  * @param __c The char to convert.
519  * @return The converted char_type
520  */
521  virtual char_type
522  do_widen(char __c) const = 0;
523 
524  /**
525  * @brief Widen char array
526  *
527  * This function converts each char in the input to char_type using the
528  * simplest reasonable transformation.
529  *
530  * do_widen() is a hook for a derived facet to change the behavior of
531  * widening. do_widen() must always return the same result for the
532  * same input.
533  *
534  * Note: this is not what you want for codepage conversions. See
535  * codecvt for that.
536  *
537  * @param __lo Pointer to start range.
538  * @param __hi Pointer to end of range.
539  * @param __to Pointer to the destination array.
540  * @return @a __hi.
541  */
542  virtual const char*
543  do_widen(const char* __lo, const char* __hi, char_type* __to) const = 0;
544 
545  /**
546  * @brief Narrow char_type to char
547  *
548  * This virtual function converts the argument to char using the
549  * simplest reasonable transformation. If the conversion fails, dfault
550  * is returned instead.
551  *
552  * do_narrow() is a hook for a derived facet to change the behavior of
553  * narrowing. do_narrow() must always return the same result for the
554  * same input.
555  *
556  * Note: this is not what you want for codepage conversions. See
557  * codecvt for that.
558  *
559  * @param __c The char_type to convert.
560  * @param __dfault Char to return if conversion fails.
561  * @return The converted char.
562  */
563  virtual char
564  do_narrow(char_type __c, char __dfault) const = 0;
565 
566  /**
567  * @brief Narrow char_type array to char
568  *
569  * This virtual function converts each char_type in the range
570  * [__lo,__hi) to char using the simplest reasonable
571  * transformation and writes the results to the destination
572  * array. For any element in the input that cannot be
573  * converted, @a __dfault is used instead.
574  *
575  * do_narrow() is a hook for a derived facet to change the behavior of
576  * narrowing. do_narrow() must always return the same result for the
577  * same input.
578  *
579  * Note: this is not what you want for codepage conversions. See
580  * codecvt for that.
581  *
582  * @param __lo Pointer to start of range.
583  * @param __hi Pointer to end of range.
584  * @param __dfault Char to use if conversion fails.
585  * @param __to Pointer to the destination array.
586  * @return @a __hi.
587  */
588  virtual const char_type*
589  do_narrow(const char_type* __lo, const char_type* __hi,
590  char __dfault, char* __to) const = 0;
591  };
592 
593  /**
594  * @brief Primary class template ctype facet.
595  * @ingroup locales
596  *
597  * This template class defines classification and conversion functions for
598  * character sets. It wraps cctype functionality. Ctype gets used by
599  * streams for many I/O operations.
600  *
601  * This template provides the protected virtual functions the developer
602  * will have to replace in a derived class or specialization to make a
603  * working facet. The public functions that access them are defined in
604  * __ctype_abstract_base, to allow for implementation flexibility. See
605  * ctype<wchar_t> for an example. The functions are documented in
606  * __ctype_abstract_base.
607  *
608  * Note: implementations are provided for all the protected virtual
609  * functions, but will likely not be useful.
610  */
611  template<typename _CharT>
612  class ctype : public __ctype_abstract_base<_CharT>
613  {
614  public:
615  // Types:
616  typedef _CharT char_type;
617  typedef typename __ctype_abstract_base<_CharT>::mask mask;
618 
619  /// The facet id for ctype<char_type>
620  static locale::id id;
621 
622  explicit
623  ctype(size_t __refs = 0) : __ctype_abstract_base<_CharT>(__refs) { }
624 
625  protected:
626  virtual
627  ~ctype();
628 
629  virtual bool
630  do_is(mask __m, char_type __c) const;
631 
632  virtual const char_type*
633  do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
634 
635  virtual const char_type*
636  do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
637 
638  virtual const char_type*
639  do_scan_not(mask __m, const char_type* __lo,
640  const char_type* __hi) const;
641 
642  virtual char_type
643  do_toupper(char_type __c) const;
644 
645  virtual const char_type*
646  do_toupper(char_type* __lo, const char_type* __hi) const;
647 
648  virtual char_type
649  do_tolower(char_type __c) const;
650 
651  virtual const char_type*
652  do_tolower(char_type* __lo, const char_type* __hi) const;
653 
654  virtual char_type
655  do_widen(char __c) const;
656 
657  virtual const char*
658  do_widen(const char* __lo, const char* __hi, char_type* __dest) const;
659 
660  virtual char
661  do_narrow(char_type, char __dfault) const;
662 
663  virtual const char_type*
664  do_narrow(const char_type* __lo, const char_type* __hi,
665  char __dfault, char* __to) const;
666  };
667 
668  template<typename _CharT>
669  locale::id ctype<_CharT>::id;
670 
671  /**
672  * @brief The ctype<char> specialization.
673  * @ingroup locales
674  *
675  * This class defines classification and conversion functions for
676  * the char type. It gets used by char streams for many I/O
677  * operations. The char specialization provides a number of
678  * optimizations as well.
679  */
680  template<>
681  class ctype<char> : public locale::facet, public ctype_base
682  {
683  public:
684  // Types:
685  /// Typedef for the template parameter char.
686  typedef char char_type;
687 
688  protected:
689  // Data Members:
690  __c_locale _M_c_locale_ctype;
691  bool _M_del;
692  __to_type _M_toupper;
693  __to_type _M_tolower;
694  const mask* _M_table;
695  mutable char _M_widen_ok;
696  mutable char _M_widen[1 + static_cast<unsigned char>(-1)];
697  mutable char _M_narrow[1 + static_cast<unsigned char>(-1)];
698  mutable char _M_narrow_ok; // 0 uninitialized, 1 init,
699  // 2 memcpy can't be used
700 
701  public:
702  /// The facet id for ctype<char>
703  static locale::id id;
704  /// The size of the mask table. It is SCHAR_MAX + 1.
705  static const size_t table_size = 1 + static_cast<unsigned char>(-1);
706 
707  /**
708  * @brief Constructor performs initialization.
709  *
710  * This is the constructor provided by the standard.
711  *
712  * @param __table If non-zero, table is used as the per-char mask.
713  * Else classic_table() is used.
714  * @param __del If true, passes ownership of table to this facet.
715  * @param __refs Passed to the base facet class.
716  */
717  explicit
718  ctype(const mask* __table = 0, bool __del = false, size_t __refs = 0);
719 
720  /**
721  * @brief Constructor performs static initialization.
722  *
723  * This constructor is used to construct the initial C locale facet.
724  *
725  * @param __cloc Handle to C locale data.
726  * @param __table If non-zero, table is used as the per-char mask.
727  * @param __del If true, passes ownership of table to this facet.
728  * @param __refs Passed to the base facet class.
729  */
730  explicit
731  ctype(__c_locale __cloc, const mask* __table = 0, bool __del = false,
732  size_t __refs = 0);
733 
734  /**
735  * @brief Test char classification.
736  *
737  * This function compares the mask table[c] to @a __m.
738  *
739  * @param __c The char to compare the mask of.
740  * @param __m The mask to compare against.
741  * @return True if __m & table[__c] is true, false otherwise.
742  */
743  inline bool
744  is(mask __m, char __c) const;
745 
746  /**
747  * @brief Return a mask array.
748  *
749  * This function finds the mask for each char in the range [lo, hi) and
750  * successively writes it to vec. vec must have as many elements as
751  * the char array.
752  *
753  * @param __lo Pointer to start of range.
754  * @param __hi Pointer to end of range.
755  * @param __vec Pointer to an array of mask storage.
756  * @return @a __hi.
757  */
758  inline const char*
759  is(const char* __lo, const char* __hi, mask* __vec) const;
760 
761  /**
762  * @brief Find char matching a mask
763  *
764  * This function searches for and returns the first char in [lo,hi) for
765  * which is(m,char) is true.
766  *
767  * @param __m The mask to compare against.
768  * @param __lo Pointer to start of range.
769  * @param __hi Pointer to end of range.
770  * @return Pointer to a matching char if found, else @a __hi.
771  */
772  inline const char*
773  scan_is(mask __m, const char* __lo, const char* __hi) const;
774 
775  /**
776  * @brief Find char not matching a mask
777  *
778  * This function searches for and returns a pointer to the first char
779  * in [__lo,__hi) for which is(m,char) is false.
780  *
781  * @param __m The mask to compare against.
782  * @param __lo Pointer to start of range.
783  * @param __hi Pointer to end of range.
784  * @return Pointer to a non-matching char if found, else @a __hi.
785  */
786  inline const char*
787  scan_not(mask __m, const char* __lo, const char* __hi) const;
788 
789  /**
790  * @brief Convert to uppercase.
791  *
792  * This function converts the char argument to uppercase if possible.
793  * If not possible (for example, '2'), returns the argument.
794  *
795  * toupper() acts as if it returns ctype<char>::do_toupper(c).
796  * do_toupper() must always return the same result for the same input.
797  *
798  * @param __c The char to convert.
799  * @return The uppercase char if convertible, else @a __c.
800  */
801  char_type
802  toupper(char_type __c) const
803  { return this->do_toupper(__c); }
804 
805  /**
806  * @brief Convert array to uppercase.
807  *
808  * This function converts each char in the range [__lo,__hi) to uppercase
809  * if possible. Other chars remain untouched.
810  *
811  * toupper() acts as if it returns ctype<char>:: do_toupper(__lo, __hi).
812  * do_toupper() must always return the same result for the same input.
813  *
814  * @param __lo Pointer to first char in range.
815  * @param __hi Pointer to end of range.
816  * @return @a __hi.
817  */
818  const char_type*
819  toupper(char_type *__lo, const char_type* __hi) const
820  { return this->do_toupper(__lo, __hi); }
821 
822  /**
823  * @brief Convert to lowercase.
824  *
825  * This function converts the char argument to lowercase if possible.
826  * If not possible (for example, '2'), returns the argument.
827  *
828  * tolower() acts as if it returns ctype<char>::do_tolower(__c).
829  * do_tolower() must always return the same result for the same input.
830  *
831  * @param __c The char to convert.
832  * @return The lowercase char if convertible, else @a __c.
833  */
834  char_type
835  tolower(char_type __c) const
836  { return this->do_tolower(__c); }
837 
838  /**
839  * @brief Convert array to lowercase.
840  *
841  * This function converts each char in the range [lo,hi) to lowercase
842  * if possible. Other chars remain untouched.
843  *
844  * tolower() acts as if it returns ctype<char>:: do_tolower(__lo, __hi).
845  * do_tolower() must always return the same result for the same input.
846  *
847  * @param __lo Pointer to first char in range.
848  * @param __hi Pointer to end of range.
849  * @return @a __hi.
850  */
851  const char_type*
852  tolower(char_type* __lo, const char_type* __hi) const
853  { return this->do_tolower(__lo, __hi); }
854 
855  /**
856  * @brief Widen char
857  *
858  * This function converts the char to char_type using the simplest
859  * reasonable transformation. For an underived ctype<char> facet, the
860  * argument will be returned unchanged.
861  *
862  * This function works as if it returns ctype<char>::do_widen(c).
863  * do_widen() must always return the same result for the same input.
864  *
865  * Note: this is not what you want for codepage conversions. See
866  * codecvt for that.
867  *
868  * @param __c The char to convert.
869  * @return The converted character.
870  */
871  char_type
872  widen(char __c) const
873  {
874  if (_M_widen_ok)
875  return _M_widen[static_cast<unsigned char>(__c)];
876  this->_M_widen_init();
877  return this->do_widen(__c);
878  }
879 
880  /**
881  * @brief Widen char array
882  *
883  * This function converts each char in the input to char using the
884  * simplest reasonable transformation. For an underived ctype<char>
885  * facet, the argument will be copied unchanged.
886  *
887  * This function works as if it returns ctype<char>::do_widen(c).
888  * do_widen() must always return the same result for the same input.
889  *
890  * Note: this is not what you want for codepage conversions. See
891  * codecvt for that.
892  *
893  * @param __lo Pointer to first char in range.
894  * @param __hi Pointer to end of range.
895  * @param __to Pointer to the destination array.
896  * @return @a __hi.
897  */
898  const char*
899  widen(const char* __lo, const char* __hi, char_type* __to) const
900  {
901  if (_M_widen_ok == 1)
902  {
903  if (__builtin_expect(__hi != __lo, true))
904  __builtin_memcpy(__to, __lo, __hi - __lo);
905  return __hi;
906  }
907  if (!_M_widen_ok)
908  _M_widen_init();
909  return this->do_widen(__lo, __hi, __to);
910  }
911 
912  /**
913  * @brief Narrow char
914  *
915  * This function converts the char to char using the simplest
916  * reasonable transformation. If the conversion fails, dfault is
917  * returned instead. For an underived ctype<char> facet, @a c
918  * will be returned unchanged.
919  *
920  * This function works as if it returns ctype<char>::do_narrow(c).
921  * do_narrow() must always return the same result for the same input.
922  *
923  * Note: this is not what you want for codepage conversions. See
924  * codecvt for that.
925  *
926  * @param __c The char to convert.
927  * @param __dfault Char to return if conversion fails.
928  * @return The converted character.
929  */
930  char
931  narrow(char_type __c, char __dfault) const
932  {
933  if (_M_narrow[static_cast<unsigned char>(__c)])
934  return _M_narrow[static_cast<unsigned char>(__c)];
935  const char __t = do_narrow(__c, __dfault);
936  if (__t != __dfault)
937  _M_narrow[static_cast<unsigned char>(__c)] = __t;
938  return __t;
939  }
940 
941  /**
942  * @brief Narrow char array
943  *
944  * This function converts each char in the input to char using the
945  * simplest reasonable transformation and writes the results to the
946  * destination array. For any char in the input that cannot be
947  * converted, @a dfault is used instead. For an underived ctype<char>
948  * facet, the argument will be copied unchanged.
949  *
950  * This function works as if it returns ctype<char>::do_narrow(lo, hi,
951  * dfault, to). do_narrow() must always return the same result for the
952  * same input.
953  *
954  * Note: this is not what you want for codepage conversions. See
955  * codecvt for that.
956  *
957  * @param __lo Pointer to start of range.
958  * @param __hi Pointer to end of range.
959  * @param __dfault Char to use if conversion fails.
960  * @param __to Pointer to the destination array.
961  * @return @a __hi.
962  */
963  const char_type*
964  narrow(const char_type* __lo, const char_type* __hi,
965  char __dfault, char* __to) const
966  {
967  if (__builtin_expect(_M_narrow_ok == 1, true))
968  {
969  if (__builtin_expect(__hi != __lo, true))
970  __builtin_memcpy(__to, __lo, __hi - __lo);
971  return __hi;
972  }
973  if (!_M_narrow_ok)
974  _M_narrow_init();
975  return this->do_narrow(__lo, __hi, __dfault, __to);
976  }
977 
978  // _GLIBCXX_RESOLVE_LIB_DEFECTS
979  // DR 695. ctype<char>::classic_table() not accessible.
980  /// Returns a pointer to the mask table provided to the constructor, or
981  /// the default from classic_table() if none was provided.
982  const mask*
983  table() const throw()
984  { return _M_table; }
985 
986  /// Returns a pointer to the C locale mask table.
987  static const mask*
988  classic_table() throw();
989  protected:
990 
991  /**
992  * @brief Destructor.
993  *
994  * This function deletes table() if @a del was true in the
995  * constructor.
996  */
997  virtual
998  ~ctype();
999 
1000  /**
1001  * @brief Convert to uppercase.
1002  *
1003  * This virtual function converts the char argument to uppercase if
1004  * possible. If not possible (for example, '2'), returns the argument.
1005  *
1006  * do_toupper() is a hook for a derived facet to change the behavior of
1007  * uppercasing. do_toupper() must always return the same result for
1008  * the same input.
1009  *
1010  * @param __c The char to convert.
1011  * @return The uppercase char if convertible, else @a __c.
1012  */
1013  virtual char_type
1014  do_toupper(char_type __c) const;
1015 
1016  /**
1017  * @brief Convert array to uppercase.
1018  *
1019  * This virtual function converts each char in the range [lo,hi) to
1020  * uppercase if possible. Other chars remain untouched.
1021  *
1022  * do_toupper() is a hook for a derived facet to change the behavior of
1023  * uppercasing. do_toupper() must always return the same result for
1024  * the same input.
1025  *
1026  * @param __lo Pointer to start of range.
1027  * @param __hi Pointer to end of range.
1028  * @return @a __hi.
1029  */
1030  virtual const char_type*
1031  do_toupper(char_type* __lo, const char_type* __hi) const;
1032 
1033  /**
1034  * @brief Convert to lowercase.
1035  *
1036  * This virtual function converts the char argument to lowercase if
1037  * possible. If not possible (for example, '2'), returns the argument.
1038  *
1039  * do_tolower() is a hook for a derived facet to change the behavior of
1040  * lowercasing. do_tolower() must always return the same result for
1041  * the same input.
1042  *
1043  * @param __c The char to convert.
1044  * @return The lowercase char if convertible, else @a __c.
1045  */
1046  virtual char_type
1047  do_tolower(char_type __c) const;
1048 
1049  /**
1050  * @brief Convert array to lowercase.
1051  *
1052  * This virtual function converts each char in the range [lo,hi) to
1053  * lowercase if possible. Other chars remain untouched.
1054  *
1055  * do_tolower() is a hook for a derived facet to change the behavior of
1056  * lowercasing. do_tolower() must always return the same result for
1057  * the same input.
1058  *
1059  * @param __lo Pointer to first char in range.
1060  * @param __hi Pointer to end of range.
1061  * @return @a __hi.
1062  */
1063  virtual const char_type*
1064  do_tolower(char_type* __lo, const char_type* __hi) const;
1065 
1066  /**
1067  * @brief Widen char
1068  *
1069  * This virtual function converts the char to char using the simplest
1070  * reasonable transformation. For an underived ctype<char> facet, the
1071  * argument will be returned unchanged.
1072  *
1073  * do_widen() is a hook for a derived facet to change the behavior of
1074  * widening. do_widen() must always return the same result for the
1075  * same input.
1076  *
1077  * Note: this is not what you want for codepage conversions. See
1078  * codecvt for that.
1079  *
1080  * @param __c The char to convert.
1081  * @return The converted character.
1082  */
1083  virtual char_type
1084  do_widen(char __c) const
1085  { return __c; }
1086 
1087  /**
1088  * @brief Widen char array
1089  *
1090  * This function converts each char in the range [lo,hi) to char using
1091  * the simplest reasonable transformation. For an underived
1092  * ctype<char> facet, the argument will be copied unchanged.
1093  *
1094  * do_widen() is a hook for a derived facet to change the behavior of
1095  * widening. do_widen() must always return the same result for the
1096  * same input.
1097  *
1098  * Note: this is not what you want for codepage conversions. See
1099  * codecvt for that.
1100  *
1101  * @param __lo Pointer to start of range.
1102  * @param __hi Pointer to end of range.
1103  * @param __to Pointer to the destination array.
1104  * @return @a __hi.
1105  */
1106  virtual const char*
1107  do_widen(const char* __lo, const char* __hi, char_type* __to) const
1108  {
1109  if (__builtin_expect(__hi != __lo, true))
1110  __builtin_memcpy(__to, __lo, __hi - __lo);
1111  return __hi;
1112  }
1113 
1114  /**
1115  * @brief Narrow char
1116  *
1117  * This virtual function converts the char to char using the simplest
1118  * reasonable transformation. If the conversion fails, dfault is
1119  * returned instead. For an underived ctype<char> facet, @a c will be
1120  * returned unchanged.
1121  *
1122  * do_narrow() is a hook for a derived facet to change the behavior of
1123  * narrowing. do_narrow() must always return the same result for the
1124  * same input.
1125  *
1126  * Note: this is not what you want for codepage conversions. See
1127  * codecvt for that.
1128  *
1129  * @param __c The char to convert.
1130  * @param __dfault Char to return if conversion fails.
1131  * @return The converted char.
1132  */
1133  virtual char
1134  do_narrow(char_type __c, char __dfault __attribute__((__unused__))) const
1135  { return __c; }
1136 
1137  /**
1138  * @brief Narrow char array to char array
1139  *
1140  * This virtual function converts each char in the range [lo,hi) to
1141  * char using the simplest reasonable transformation and writes the
1142  * results to the destination array. For any char in the input that
1143  * cannot be converted, @a dfault is used instead. For an underived
1144  * ctype<char> facet, the argument will be copied unchanged.
1145  *
1146  * do_narrow() is a hook for a derived facet to change the behavior of
1147  * narrowing. do_narrow() must always return the same result for the
1148  * same input.
1149  *
1150  * Note: this is not what you want for codepage conversions. See
1151  * codecvt for that.
1152  *
1153  * @param __lo Pointer to start of range.
1154  * @param __hi Pointer to end of range.
1155  * @param __dfault Char to use if conversion fails.
1156  * @param __to Pointer to the destination array.
1157  * @return @a __hi.
1158  */
1159  virtual const char_type*
1160  do_narrow(const char_type* __lo, const char_type* __hi,
1161  char __dfault __attribute__((__unused__)), char* __to) const
1162  {
1163  if (__builtin_expect(__hi != __lo, true))
1164  __builtin_memcpy(__to, __lo, __hi - __lo);
1165  return __hi;
1166  }
1167 
1168  private:
1169  void _M_narrow_init() const;
1170  void _M_widen_init() const;
1171  };
1172 
1173 #ifdef _GLIBCXX_USE_WCHAR_T
1174  /**
1175  * @brief The ctype<wchar_t> specialization.
1176  * @ingroup locales
1177  *
1178  * This class defines classification and conversion functions for the
1179  * wchar_t type. It gets used by wchar_t streams for many I/O operations.
1180  * The wchar_t specialization provides a number of optimizations as well.
1181  *
1182  * ctype<wchar_t> inherits its public methods from
1183  * __ctype_abstract_base<wchar_t>.
1184  */
1185  template<>
1186  class ctype<wchar_t> : public __ctype_abstract_base<wchar_t>
1187  {
1188  public:
1189  // Types:
1190  /// Typedef for the template parameter wchar_t.
1191  typedef wchar_t char_type;
1192  typedef wctype_t __wmask_type;
1193 
1194  protected:
1195  __c_locale _M_c_locale_ctype;
1196 
1197  // Pre-computed narrowed and widened chars.
1198  bool _M_narrow_ok;
1199  char _M_narrow[128];
1200  wint_t _M_widen[1 + static_cast<unsigned char>(-1)];
1201 
1202  // Pre-computed elements for do_is.
1203  mask _M_bit[16];
1204  __wmask_type _M_wmask[16];
1205 
1206  public:
1207  // Data Members:
1208  /// The facet id for ctype<wchar_t>
1209  static locale::id id;
1210 
1211  /**
1212  * @brief Constructor performs initialization.
1213  *
1214  * This is the constructor provided by the standard.
1215  *
1216  * @param __refs Passed to the base facet class.
1217  */
1218  explicit
1219  ctype(size_t __refs = 0);
1220 
1221  /**
1222  * @brief Constructor performs static initialization.
1223  *
1224  * This constructor is used to construct the initial C locale facet.
1225  *
1226  * @param __cloc Handle to C locale data.
1227  * @param __refs Passed to the base facet class.
1228  */
1229  explicit
1230  ctype(__c_locale __cloc, size_t __refs = 0);
1231 
1232  protected:
1233  __wmask_type
1234  _M_convert_to_wmask(const mask __m) const throw();
1235 
1236  /// Destructor
1237  virtual
1238  ~ctype();
1239 
1240  /**
1241  * @brief Test wchar_t classification.
1242  *
1243  * This function finds a mask M for @a c and compares it to mask @a m.
1244  *
1245  * do_is() is a hook for a derived facet to change the behavior of
1246  * classifying. do_is() must always return the same result for the
1247  * same input.
1248  *
1249  * @param __c The wchar_t to find the mask of.
1250  * @param __m The mask to compare against.
1251  * @return (M & __m) != 0.
1252  */
1253  virtual bool
1254  do_is(mask __m, char_type __c) const;
1255 
1256  /**
1257  * @brief Return a mask array.
1258  *
1259  * This function finds the mask for each wchar_t in the range [lo,hi)
1260  * and successively writes it to vec. vec must have as many elements
1261  * as the input.
1262  *
1263  * do_is() is a hook for a derived facet to change the behavior of
1264  * classifying. do_is() must always return the same result for the
1265  * same input.
1266  *
1267  * @param __lo Pointer to start of range.
1268  * @param __hi Pointer to end of range.
1269  * @param __vec Pointer to an array of mask storage.
1270  * @return @a __hi.
1271  */
1272  virtual const char_type*
1273  do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
1274 
1275  /**
1276  * @brief Find wchar_t matching mask
1277  *
1278  * This function searches for and returns the first wchar_t c in
1279  * [__lo,__hi) for which is(__m,c) is true.
1280  *
1281  * do_scan_is() is a hook for a derived facet to change the behavior of
1282  * match searching. do_is() must always return the same result for the
1283  * same input.
1284  *
1285  * @param __m The mask to compare against.
1286  * @param __lo Pointer to start of range.
1287  * @param __hi Pointer to end of range.
1288  * @return Pointer to a matching wchar_t if found, else @a __hi.
1289  */
1290  virtual const char_type*
1291  do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
1292 
1293  /**
1294  * @brief Find wchar_t not matching mask
1295  *
1296  * This function searches for and returns a pointer to the first
1297  * wchar_t c of [__lo,__hi) for which is(__m,c) is false.
1298  *
1299  * do_scan_is() is a hook for a derived facet to change the behavior of
1300  * match searching. do_is() must always return the same result for the
1301  * same input.
1302  *
1303  * @param __m The mask to compare against.
1304  * @param __lo Pointer to start of range.
1305  * @param __hi Pointer to end of range.
1306  * @return Pointer to a non-matching wchar_t if found, else @a __hi.
1307  */
1308  virtual const char_type*
1309  do_scan_not(mask __m, const char_type* __lo,
1310  const char_type* __hi) const;
1311 
1312  /**
1313  * @brief Convert to uppercase.
1314  *
1315  * This virtual function converts the wchar_t argument to uppercase if
1316  * possible. If not possible (for example, '2'), returns the argument.
1317  *
1318  * do_toupper() is a hook for a derived facet to change the behavior of
1319  * uppercasing. do_toupper() must always return the same result for
1320  * the same input.
1321  *
1322  * @param __c The wchar_t to convert.
1323  * @return The uppercase wchar_t if convertible, else @a __c.
1324  */
1325  virtual char_type
1326  do_toupper(char_type __c) const;
1327 
1328  /**
1329  * @brief Convert array to uppercase.
1330  *
1331  * This virtual function converts each wchar_t in the range [lo,hi) to
1332  * uppercase if possible. Other elements remain untouched.
1333  *
1334  * do_toupper() is a hook for a derived facet to change the behavior of
1335  * uppercasing. do_toupper() must always return the same result for
1336  * the same input.
1337  *
1338  * @param __lo Pointer to start of range.
1339  * @param __hi Pointer to end of range.
1340  * @return @a __hi.
1341  */
1342  virtual const char_type*
1343  do_toupper(char_type* __lo, const char_type* __hi) const;
1344 
1345  /**
1346  * @brief Convert to lowercase.
1347  *
1348  * This virtual function converts the argument to lowercase if
1349  * possible. If not possible (for example, '2'), returns the argument.
1350  *
1351  * do_tolower() is a hook for a derived facet to change the behavior of
1352  * lowercasing. do_tolower() must always return the same result for
1353  * the same input.
1354  *
1355  * @param __c The wchar_t to convert.
1356  * @return The lowercase wchar_t if convertible, else @a __c.
1357  */
1358  virtual char_type
1359  do_tolower(char_type __c) const;
1360 
1361  /**
1362  * @brief Convert array to lowercase.
1363  *
1364  * This virtual function converts each wchar_t in the range [lo,hi) to
1365  * lowercase if possible. Other elements remain untouched.
1366  *
1367  * do_tolower() is a hook for a derived facet to change the behavior of
1368  * lowercasing. do_tolower() must always return the same result for
1369  * the same input.
1370  *
1371  * @param __lo Pointer to start of range.
1372  * @param __hi Pointer to end of range.
1373  * @return @a __hi.
1374  */
1375  virtual const char_type*
1376  do_tolower(char_type* __lo, const char_type* __hi) const;
1377 
1378  /**
1379  * @brief Widen char to wchar_t
1380  *
1381  * This virtual function converts the char to wchar_t using the
1382  * simplest reasonable transformation. For an underived ctype<wchar_t>
1383  * facet, the argument will be cast to wchar_t.
1384  *
1385  * do_widen() is a hook for a derived facet to change the behavior of
1386  * widening. do_widen() must always return the same result for the
1387  * same input.
1388  *
1389  * Note: this is not what you want for codepage conversions. See
1390  * codecvt for that.
1391  *
1392  * @param __c The char to convert.
1393  * @return The converted wchar_t.
1394  */
1395  virtual char_type
1396  do_widen(char __c) const;
1397 
1398  /**
1399  * @brief Widen char array to wchar_t array
1400  *
1401  * This function converts each char in the input to wchar_t using the
1402  * simplest reasonable transformation. For an underived ctype<wchar_t>
1403  * facet, the argument will be copied, casting each element to wchar_t.
1404  *
1405  * do_widen() is a hook for a derived facet to change the behavior of
1406  * widening. do_widen() must always return the same result for the
1407  * same input.
1408  *
1409  * Note: this is not what you want for codepage conversions. See
1410  * codecvt for that.
1411  *
1412  * @param __lo Pointer to start range.
1413  * @param __hi Pointer to end of range.
1414  * @param __to Pointer to the destination array.
1415  * @return @a __hi.
1416  */
1417  virtual const char*
1418  do_widen(const char* __lo, const char* __hi, char_type* __to) const;
1419 
1420  /**
1421  * @brief Narrow wchar_t to char
1422  *
1423  * This virtual function converts the argument to char using
1424  * the simplest reasonable transformation. If the conversion
1425  * fails, dfault is returned instead. For an underived
1426  * ctype<wchar_t> facet, @a c will be cast to char and
1427  * returned.
1428  *
1429  * do_narrow() is a hook for a derived facet to change the
1430  * behavior of narrowing. do_narrow() must always return the
1431  * same result for the same input.
1432  *
1433  * Note: this is not what you want for codepage conversions. See
1434  * codecvt for that.
1435  *
1436  * @param __c The wchar_t to convert.
1437  * @param __dfault Char to return if conversion fails.
1438  * @return The converted char.
1439  */
1440  virtual char
1441  do_narrow(char_type __c, char __dfault) const;
1442 
1443  /**
1444  * @brief Narrow wchar_t array to char array
1445  *
1446  * This virtual function converts each wchar_t in the range [lo,hi) to
1447  * char using the simplest reasonable transformation and writes the
1448  * results to the destination array. For any wchar_t in the input that
1449  * cannot be converted, @a dfault is used instead. For an underived
1450  * ctype<wchar_t> facet, the argument will be copied, casting each
1451  * element to char.
1452  *
1453  * do_narrow() is a hook for a derived facet to change the behavior of
1454  * narrowing. do_narrow() must always return the same result for the
1455  * same input.
1456  *
1457  * Note: this is not what you want for codepage conversions. See
1458  * codecvt for that.
1459  *
1460  * @param __lo Pointer to start of range.
1461  * @param __hi Pointer to end of range.
1462  * @param __dfault Char to use if conversion fails.
1463  * @param __to Pointer to the destination array.
1464  * @return @a __hi.
1465  */
1466  virtual const char_type*
1467  do_narrow(const char_type* __lo, const char_type* __hi,
1468  char __dfault, char* __to) const;
1469 
1470  // For use at construction time only.
1471  void
1472  _M_initialize_ctype() throw();
1473  };
1474 #endif //_GLIBCXX_USE_WCHAR_T
1475 
1476  /// class ctype_byname [22.2.1.2].
1477  template<typename _CharT>
1478  class ctype_byname : public ctype<_CharT>
1479  {
1480  public:
1481  typedef typename ctype<_CharT>::mask mask;
1482 
1483  explicit
1484  ctype_byname(const char* __s, size_t __refs = 0);
1485 
1486 #if __cplusplus >= 201103L
1487  explicit
1488  ctype_byname(const string& __s, size_t __refs = 0)
1489  : ctype_byname(__s.c_str(), __refs) { }
1490 #endif
1491 
1492  protected:
1493  virtual
1494  ~ctype_byname() { }
1495  };
1496 
1497  /// 22.2.1.4 Class ctype_byname specializations.
1498  template<>
1499  class ctype_byname<char> : public ctype<char>
1500  {
1501  public:
1502  explicit
1503  ctype_byname(const char* __s, size_t __refs = 0);
1504 
1505 #if __cplusplus >= 201103L
1506  explicit
1507  ctype_byname(const string& __s, size_t __refs = 0);
1508 #endif
1509 
1510  protected:
1511  virtual
1512  ~ctype_byname();
1513  };
1514 
1515 #ifdef _GLIBCXX_USE_WCHAR_T
1516  template<>
1517  class ctype_byname<wchar_t> : public ctype<wchar_t>
1518  {
1519  public:
1520  explicit
1521  ctype_byname(const char* __s, size_t __refs = 0);
1522 
1523 #if __cplusplus >= 201103L
1524  explicit
1525  ctype_byname(const string& __s, size_t __refs = 0);
1526 #endif
1527 
1528  protected:
1529  virtual
1530  ~ctype_byname();
1531  };
1532 #endif
1533 
1534 _GLIBCXX_END_NAMESPACE_VERSION
1535 } // namespace
1536 
1537 // Include host and configuration specific ctype inlines.
1538 #include <bits/ctype_inline.h>
1539 
1540 namespace std _GLIBCXX_VISIBILITY(default)
1541 {
1542 _GLIBCXX_BEGIN_NAMESPACE_VERSION
1543 
1544  // 22.2.2 The numeric category.
1545  class __num_base
1546  {
1547  public:
1548  // NB: Code depends on the order of _S_atoms_out elements.
1549  // Below are the indices into _S_atoms_out.
1550  enum
1551  {
1552  _S_ominus,
1553  _S_oplus,
1554  _S_ox,
1555  _S_oX,
1556  _S_odigits,
1557  _S_odigits_end = _S_odigits + 16,
1558  _S_oudigits = _S_odigits_end,
1559  _S_oudigits_end = _S_oudigits + 16,
1560  _S_oe = _S_odigits + 14, // For scientific notation, 'e'
1561  _S_oE = _S_oudigits + 14, // For scientific notation, 'E'
1562  _S_oend = _S_oudigits_end
1563  };
1564 
1565  // A list of valid numeric literals for output. This array
1566  // contains chars that will be passed through the current locale's
1567  // ctype<_CharT>.widen() and then used to render numbers.
1568  // For the standard "C" locale, this is
1569  // "-+xX0123456789abcdef0123456789ABCDEF".
1570  static const char* _S_atoms_out;
1571 
1572  // String literal of acceptable (narrow) input, for num_get.
1573  // "-+xX0123456789abcdefABCDEF"
1574  static const char* _S_atoms_in;
1575 
1576  enum
1577  {
1578  _S_iminus,
1579  _S_iplus,
1580  _S_ix,
1581  _S_iX,
1582  _S_izero,
1583  _S_ie = _S_izero + 14,
1584  _S_iE = _S_izero + 20,
1585  _S_iend = 26
1586  };
1587 
1588  // num_put
1589  // Construct and return valid scanf format for floating point types.
1590  static void
1591  _S_format_float(const ios_base& __io, char* __fptr, char __mod) throw();
1592  };
1593 
1594  template<typename _CharT>
1595  struct __numpunct_cache : public locale::facet
1596  {
1597  const char* _M_grouping;
1598  size_t _M_grouping_size;
1599  bool _M_use_grouping;
1600  const _CharT* _M_truename;
1601  size_t _M_truename_size;
1602  const _CharT* _M_falsename;
1603  size_t _M_falsename_size;
1604  _CharT _M_decimal_point;
1605  _CharT _M_thousands_sep;
1606 
1607  // A list of valid numeric literals for output: in the standard
1608  // "C" locale, this is "-+xX0123456789abcdef0123456789ABCDEF".
1609  // This array contains the chars after having been passed
1610  // through the current locale's ctype<_CharT>.widen().
1611  _CharT _M_atoms_out[__num_base::_S_oend];
1612 
1613  // A list of valid numeric literals for input: in the standard
1614  // "C" locale, this is "-+xX0123456789abcdefABCDEF"
1615  // This array contains the chars after having been passed
1616  // through the current locale's ctype<_CharT>.widen().
1617  _CharT _M_atoms_in[__num_base::_S_iend];
1618 
1619  bool _M_allocated;
1620 
1621  __numpunct_cache(size_t __refs = 0)
1622  : facet(__refs), _M_grouping(0), _M_grouping_size(0),
1623  _M_use_grouping(false),
1624  _M_truename(0), _M_truename_size(0), _M_falsename(0),
1625  _M_falsename_size(0), _M_decimal_point(_CharT()),
1626  _M_thousands_sep(_CharT()), _M_allocated(false)
1627  { }
1628 
1629  ~__numpunct_cache();
1630 
1631  void
1632  _M_cache(const locale& __loc);
1633 
1634  private:
1635  __numpunct_cache&
1636  operator=(const __numpunct_cache&);
1637 
1638  explicit
1639  __numpunct_cache(const __numpunct_cache&);
1640  };
1641 
1642  template<typename _CharT>
1643  __numpunct_cache<_CharT>::~__numpunct_cache()
1644  {
1645  if (_M_allocated)
1646  {
1647  delete [] _M_grouping;
1648  delete [] _M_truename;
1649  delete [] _M_falsename;
1650  }
1651  }
1652 
1653 _GLIBCXX_BEGIN_NAMESPACE_CXX11
1654 
1655  /**
1656  * @brief Primary class template numpunct.
1657  * @ingroup locales
1658  *
1659  * This facet stores several pieces of information related to printing and
1660  * scanning numbers, such as the decimal point character. It takes a
1661  * template parameter specifying the char type. The numpunct facet is
1662  * used by streams for many I/O operations involving numbers.
1663  *
1664  * The numpunct template uses protected virtual functions to provide the
1665  * actual results. The public accessors forward the call to the virtual
1666  * functions. These virtual functions are hooks for developers to
1667  * implement the behavior they require from a numpunct facet.
1668  */
1669  template<typename _CharT>
1670  class numpunct : public locale::facet
1671  {
1672  public:
1673  // Types:
1674  //@{
1675  /// Public typedefs
1676  typedef _CharT char_type;
1677  typedef basic_string<_CharT> string_type;
1678  //@}
1679  typedef __numpunct_cache<_CharT> __cache_type;
1680 
1681  protected:
1682  __cache_type* _M_data;
1683 
1684  public:
1685  /// Numpunct facet id.
1686  static locale::id id;
1687 
1688  /**
1689  * @brief Numpunct constructor.
1690  *
1691  * @param __refs Refcount to pass to the base class.
1692  */
1693  explicit
1694  numpunct(size_t __refs = 0)
1695  : facet(__refs), _M_data(0)
1696  { _M_initialize_numpunct(); }
1697 
1698  /**
1699  * @brief Internal constructor. Not for general use.
1700  *
1701  * This is a constructor for use by the library itself to set up the
1702  * predefined locale facets.
1703  *
1704  * @param __cache __numpunct_cache object.
1705  * @param __refs Refcount to pass to the base class.
1706  */
1707  explicit
1708  numpunct(__cache_type* __cache, size_t __refs = 0)
1709  : facet(__refs), _M_data(__cache)
1710  { _M_initialize_numpunct(); }
1711 
1712  /**
1713  * @brief Internal constructor. Not for general use.
1714  *
1715  * This is a constructor for use by the library itself to set up new
1716  * locales.
1717  *
1718  * @param __cloc The C locale.
1719  * @param __refs Refcount to pass to the base class.
1720  */
1721  explicit
1722  numpunct(__c_locale __cloc, size_t __refs = 0)
1723  : facet(__refs), _M_data(0)
1724  { _M_initialize_numpunct(__cloc); }
1725 
1726  /**
1727  * @brief Return decimal point character.
1728  *
1729  * This function returns a char_type to use as a decimal point. It
1730  * does so by returning returning
1731  * numpunct<char_type>::do_decimal_point().
1732  *
1733  * @return @a char_type representing a decimal point.
1734  */
1735  char_type
1736  decimal_point() const
1737  { return this->do_decimal_point(); }
1738 
1739  /**
1740  * @brief Return thousands separator character.
1741  *
1742  * This function returns a char_type to use as a thousands
1743  * separator. It does so by returning returning
1744  * numpunct<char_type>::do_thousands_sep().
1745  *
1746  * @return char_type representing a thousands separator.
1747  */
1748  char_type
1749  thousands_sep() const
1750  { return this->do_thousands_sep(); }
1751 
1752  /**
1753  * @brief Return grouping specification.
1754  *
1755  * This function returns a string representing groupings for the
1756  * integer part of a number. Groupings indicate where thousands
1757  * separators should be inserted in the integer part of a number.
1758  *
1759  * Each char in the return string is interpret as an integer
1760  * rather than a character. These numbers represent the number
1761  * of digits in a group. The first char in the string
1762  * represents the number of digits in the least significant
1763  * group. If a char is negative, it indicates an unlimited
1764  * number of digits for the group. If more chars from the
1765  * string are required to group a number, the last char is used
1766  * repeatedly.
1767  *
1768  * For example, if the grouping() returns "\003\002" and is
1769  * applied to the number 123456789, this corresponds to
1770  * 12,34,56,789. Note that if the string was "32", this would
1771  * put more than 50 digits into the least significant group if
1772  * the character set is ASCII.
1773  *
1774  * The string is returned by calling
1775  * numpunct<char_type>::do_grouping().
1776  *
1777  * @return string representing grouping specification.
1778  */
1779  string
1780  grouping() const
1781  { return this->do_grouping(); }
1782 
1783  /**
1784  * @brief Return string representation of bool true.
1785  *
1786  * This function returns a string_type containing the text
1787  * representation for true bool variables. It does so by calling
1788  * numpunct<char_type>::do_truename().
1789  *
1790  * @return string_type representing printed form of true.
1791  */
1792  string_type
1793  truename() const
1794  { return this->do_truename(); }
1795 
1796  /**
1797  * @brief Return string representation of bool false.
1798  *
1799  * This function returns a string_type containing the text
1800  * representation for false bool variables. It does so by calling
1801  * numpunct<char_type>::do_falsename().
1802  *
1803  * @return string_type representing printed form of false.
1804  */
1805  string_type
1806  falsename() const
1807  { return this->do_falsename(); }
1808 
1809  protected:
1810  /// Destructor.
1811  virtual
1812  ~numpunct();
1813 
1814  /**
1815  * @brief Return decimal point character.
1816  *
1817  * Returns a char_type to use as a decimal point. This function is a
1818  * hook for derived classes to change the value returned.
1819  *
1820  * @return @a char_type representing a decimal point.
1821  */
1822  virtual char_type
1823  do_decimal_point() const
1824  { return _M_data->_M_decimal_point; }
1825 
1826  /**
1827  * @brief Return thousands separator character.
1828  *
1829  * Returns a char_type to use as a thousands separator. This function
1830  * is a hook for derived classes to change the value returned.
1831  *
1832  * @return @a char_type representing a thousands separator.
1833  */
1834  virtual char_type
1835  do_thousands_sep() const
1836  { return _M_data->_M_thousands_sep; }
1837 
1838  /**
1839  * @brief Return grouping specification.
1840  *
1841  * Returns a string representing groupings for the integer part of a
1842  * number. This function is a hook for derived classes to change the
1843  * value returned. @see grouping() for details.
1844  *
1845  * @return String representing grouping specification.
1846  */
1847  virtual string
1848  do_grouping() const
1849  { return _M_data->_M_grouping; }
1850 
1851  /**
1852  * @brief Return string representation of bool true.
1853  *
1854  * Returns a string_type containing the text representation for true
1855  * bool variables. This function is a hook for derived classes to
1856  * change the value returned.
1857  *
1858  * @return string_type representing printed form of true.
1859  */
1860  virtual string_type
1861  do_truename() const
1862  { return _M_data->_M_truename; }
1863 
1864  /**
1865  * @brief Return string representation of bool false.
1866  *
1867  * Returns a string_type containing the text representation for false
1868  * bool variables. This function is a hook for derived classes to
1869  * change the value returned.
1870  *
1871  * @return string_type representing printed form of false.
1872  */
1873  virtual string_type
1874  do_falsename() const
1875  { return _M_data->_M_falsename; }
1876 
1877  // For use at construction time only.
1878  void
1879  _M_initialize_numpunct(__c_locale __cloc = 0);
1880  };
1881 
1882  template<typename _CharT>
1883  locale::id numpunct<_CharT>::id;
1884 
1885  template<>
1886  numpunct<char>::~numpunct();
1887 
1888  template<>
1889  void
1890  numpunct<char>::_M_initialize_numpunct(__c_locale __cloc);
1891 
1892 #ifdef _GLIBCXX_USE_WCHAR_T
1893  template<>
1894  numpunct<wchar_t>::~numpunct();
1895 
1896  template<>
1897  void
1898  numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc);
1899 #endif
1900 
1901  /// class numpunct_byname [22.2.3.2].
1902  template<typename _CharT>
1903  class numpunct_byname : public numpunct<_CharT>
1904  {
1905  public:
1906  typedef _CharT char_type;
1907  typedef basic_string<_CharT> string_type;
1908 
1909  explicit
1910  numpunct_byname(const char* __s, size_t __refs = 0)
1911  : numpunct<_CharT>(__refs)
1912  {
1913  if (__builtin_strcmp(__s, "C") != 0
1914  && __builtin_strcmp(__s, "POSIX") != 0)
1915  {
1916  __c_locale __tmp;
1917  this->_S_create_c_locale(__tmp, __s);
1918  this->_M_initialize_numpunct(__tmp);
1919  this->_S_destroy_c_locale(__tmp);
1920  }
1921  }
1922 
1923 #if __cplusplus >= 201103L
1924  explicit
1925  numpunct_byname(const string& __s, size_t __refs = 0)
1926  : numpunct_byname(__s.c_str(), __refs) { }
1927 #endif
1928 
1929  protected:
1930  virtual
1931  ~numpunct_byname() { }
1932  };
1933 
1934 _GLIBCXX_END_NAMESPACE_CXX11
1935 
1936 _GLIBCXX_BEGIN_NAMESPACE_LDBL
1937 
1938  /**
1939  * @brief Primary class template num_get.
1940  * @ingroup locales
1941  *
1942  * This facet encapsulates the code to parse and return a number
1943  * from a string. It is used by the istream numeric extraction
1944  * operators.
1945  *
1946  * The num_get template uses protected virtual functions to provide the
1947  * actual results. The public accessors forward the call to the virtual
1948  * functions. These virtual functions are hooks for developers to
1949  * implement the behavior they require from the num_get facet.
1950  */
1951  template<typename _CharT, typename _InIter>
1952  class num_get : public locale::facet
1953  {
1954  public:
1955  // Types:
1956  //@{
1957  /// Public typedefs
1958  typedef _CharT char_type;
1959  typedef _InIter iter_type;
1960  //@}
1961 
1962  /// Numpunct facet id.
1963  static locale::id id;
1964 
1965  /**
1966  * @brief Constructor performs initialization.
1967  *
1968  * This is the constructor provided by the standard.
1969  *
1970  * @param __refs Passed to the base facet class.
1971  */
1972  explicit
1973  num_get(size_t __refs = 0) : facet(__refs) { }
1974 
1975  /**
1976  * @brief Numeric parsing.
1977  *
1978  * Parses the input stream into the bool @a v. It does so by calling
1979  * num_get::do_get().
1980  *
1981  * If ios_base::boolalpha is set, attempts to read
1982  * ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets
1983  * @a v to true or false if successful. Sets err to
1984  * ios_base::failbit if reading the string fails. Sets err to
1985  * ios_base::eofbit if the stream is emptied.
1986  *
1987  * If ios_base::boolalpha is not set, proceeds as with reading a long,
1988  * except if the value is 1, sets @a v to true, if the value is 0, sets
1989  * @a v to false, and otherwise set err to ios_base::failbit.
1990  *
1991  * @param __in Start of input stream.
1992  * @param __end End of input stream.
1993  * @param __io Source of locale and flags.
1994  * @param __err Error flags to set.
1995  * @param __v Value to format and insert.
1996  * @return Iterator after reading.
1997  */
1998  iter_type
1999  get(iter_type __in, iter_type __end, ios_base& __io,
2000  ios_base::iostate& __err, bool& __v) const
2001  { return this->do_get(__in, __end, __io, __err, __v); }
2002 
2003  //@{
2004  /**
2005  * @brief Numeric parsing.
2006  *
2007  * Parses the input stream into the integral variable @a v. It does so
2008  * by calling num_get::do_get().
2009  *
2010  * Parsing is affected by the flag settings in @a io.
2011  *
2012  * The basic parse is affected by the value of io.flags() &
2013  * ios_base::basefield. If equal to ios_base::oct, parses like the
2014  * scanf %o specifier. Else if equal to ios_base::hex, parses like %X
2015  * specifier. Else if basefield equal to 0, parses like the %i
2016  * specifier. Otherwise, parses like %d for signed and %u for unsigned
2017  * types. The matching type length modifier is also used.
2018  *
2019  * Digit grouping is interpreted according to
2020  * numpunct::grouping() and numpunct::thousands_sep(). If the
2021  * pattern of digit groups isn't consistent, sets err to
2022  * ios_base::failbit.
2023  *
2024  * If parsing the string yields a valid value for @a v, @a v is set.
2025  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2026  * Sets err to ios_base::eofbit if the stream is emptied.
2027  *
2028  * @param __in Start of input stream.
2029  * @param __end End of input stream.
2030  * @param __io Source of locale and flags.
2031  * @param __err Error flags to set.
2032  * @param __v Value to format and insert.
2033  * @return Iterator after reading.
2034  */
2035  iter_type
2036  get(iter_type __in, iter_type __end, ios_base& __io,
2037  ios_base::iostate& __err, long& __v) const
2038  { return this->do_get(__in, __end, __io, __err, __v); }
2039 
2040  iter_type
2041  get(iter_type __in, iter_type __end, ios_base& __io,
2042  ios_base::iostate& __err, unsigned short& __v) const
2043  { return this->do_get(__in, __end, __io, __err, __v); }
2044 
2045  iter_type
2046  get(iter_type __in, iter_type __end, ios_base& __io,
2047  ios_base::iostate& __err, unsigned int& __v) const
2048  { return this->do_get(__in, __end, __io, __err, __v); }
2049 
2050  iter_type
2051  get(iter_type __in, iter_type __end, ios_base& __io,
2052  ios_base::iostate& __err, unsigned long& __v) const
2053  { return this->do_get(__in, __end, __io, __err, __v); }
2054 
2055 #ifdef _GLIBCXX_USE_LONG_LONG
2056  iter_type
2057  get(iter_type __in, iter_type __end, ios_base& __io,
2058  ios_base::iostate& __err, long long& __v) const
2059  { return this->do_get(__in, __end, __io, __err, __v); }
2060 
2061  iter_type
2062  get(iter_type __in, iter_type __end, ios_base& __io,
2063  ios_base::iostate& __err, unsigned long long& __v) const
2064  { return this->do_get(__in, __end, __io, __err, __v); }
2065 #endif
2066  //@}
2067 
2068  //@{
2069  /**
2070  * @brief Numeric parsing.
2071  *
2072  * Parses the input stream into the integral variable @a v. It does so
2073  * by calling num_get::do_get().
2074  *
2075  * The input characters are parsed like the scanf %g specifier. The
2076  * matching type length modifier is also used.
2077  *
2078  * The decimal point character used is numpunct::decimal_point().
2079  * Digit grouping is interpreted according to
2080  * numpunct::grouping() and numpunct::thousands_sep(). If the
2081  * pattern of digit groups isn't consistent, sets err to
2082  * ios_base::failbit.
2083  *
2084  * If parsing the string yields a valid value for @a v, @a v is set.
2085  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2086  * Sets err to ios_base::eofbit if the stream is emptied.
2087  *
2088  * @param __in Start of input stream.
2089  * @param __end End of input stream.
2090  * @param __io Source of locale and flags.
2091  * @param __err Error flags to set.
2092  * @param __v Value to format and insert.
2093  * @return Iterator after reading.
2094  */
2095  iter_type
2096  get(iter_type __in, iter_type __end, ios_base& __io,
2097  ios_base::iostate& __err, float& __v) const
2098  { return this->do_get(__in, __end, __io, __err, __v); }
2099 
2100  iter_type
2101  get(iter_type __in, iter_type __end, ios_base& __io,
2102  ios_base::iostate& __err, double& __v) const
2103  { return this->do_get(__in, __end, __io, __err, __v); }
2104 
2105  iter_type
2106  get(iter_type __in, iter_type __end, ios_base& __io,
2107  ios_base::iostate& __err, long double& __v) const
2108  { return this->do_get(__in, __end, __io, __err, __v); }
2109  //@}
2110 
2111  /**
2112  * @brief Numeric parsing.
2113  *
2114  * Parses the input stream into the pointer variable @a v. It does so
2115  * by calling num_get::do_get().
2116  *
2117  * The input characters are parsed like the scanf %p specifier.
2118  *
2119  * Digit grouping is interpreted according to
2120  * numpunct::grouping() and numpunct::thousands_sep(). If the
2121  * pattern of digit groups isn't consistent, sets err to
2122  * ios_base::failbit.
2123  *
2124  * Note that the digit grouping effect for pointers is a bit ambiguous
2125  * in the standard and shouldn't be relied on. See DR 344.
2126  *
2127  * If parsing the string yields a valid value for @a v, @a v is set.
2128  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2129  * Sets err to ios_base::eofbit if the stream is emptied.
2130  *
2131  * @param __in Start of input stream.
2132  * @param __end End of input stream.
2133  * @param __io Source of locale and flags.
2134  * @param __err Error flags to set.
2135  * @param __v Value to format and insert.
2136  * @return Iterator after reading.
2137  */
2138  iter_type
2139  get(iter_type __in, iter_type __end, ios_base& __io,
2140  ios_base::iostate& __err, void*& __v) const
2141  { return this->do_get(__in, __end, __io, __err, __v); }
2142 
2143  protected:
2144  /// Destructor.
2145  virtual ~num_get() { }
2146 
2147  _GLIBCXX_DEFAULT_ABI_TAG
2148  iter_type
2149  _M_extract_float(iter_type, iter_type, ios_base&, ios_base::iostate&,
2150  string&) const;
2151 
2152  template<typename _ValueT>
2153  _GLIBCXX_DEFAULT_ABI_TAG
2154  iter_type
2155  _M_extract_int(iter_type, iter_type, ios_base&, ios_base::iostate&,
2156  _ValueT&) const;
2157 
2158  template<typename _CharT2>
2159  typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value, int>::__type
2160  _M_find(const _CharT2*, size_t __len, _CharT2 __c) const
2161  {
2162  int __ret = -1;
2163  if (__len <= 10)
2164  {
2165  if (__c >= _CharT2('0') && __c < _CharT2(_CharT2('0') + __len))
2166  __ret = __c - _CharT2('0');
2167  }
2168  else
2169  {
2170  if (__c >= _CharT2('0') && __c <= _CharT2('9'))
2171  __ret = __c - _CharT2('0');
2172  else if (__c >= _CharT2('a') && __c <= _CharT2('f'))
2173  __ret = 10 + (__c - _CharT2('a'));
2174  else if (__c >= _CharT2('A') && __c <= _CharT2('F'))
2175  __ret = 10 + (__c - _CharT2('A'));
2176  }
2177  return __ret;
2178  }
2179 
2180  template<typename _CharT2>
2181  typename __gnu_cxx::__enable_if<!__is_char<_CharT2>::__value,
2182  int>::__type
2183  _M_find(const _CharT2* __zero, size_t __len, _CharT2 __c) const
2184  {
2185  int __ret = -1;
2186  const char_type* __q = char_traits<_CharT2>::find(__zero, __len, __c);
2187  if (__q)
2188  {
2189  __ret = __q - __zero;
2190  if (__ret > 15)
2191  __ret -= 6;
2192  }
2193  return __ret;
2194  }
2195 
2196  //@{
2197  /**
2198  * @brief Numeric parsing.
2199  *
2200  * Parses the input stream into the variable @a v. This function is a
2201  * hook for derived classes to change the value returned. @see get()
2202  * for more details.
2203  *
2204  * @param __beg Start of input stream.
2205  * @param __end End of input stream.
2206  * @param __io Source of locale and flags.
2207  * @param __err Error flags to set.
2208  * @param __v Value to format and insert.
2209  * @return Iterator after reading.
2210  */
2211  virtual iter_type
2212  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, bool&) const;
2213 
2214  virtual iter_type
2215  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2216  ios_base::iostate& __err, long& __v) const
2217  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2218 
2219  virtual iter_type
2220  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2221  ios_base::iostate& __err, unsigned short& __v) const
2222  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2223 
2224  virtual iter_type
2225  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2226  ios_base::iostate& __err, unsigned int& __v) const
2227  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2228 
2229  virtual iter_type
2230  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2231  ios_base::iostate& __err, unsigned long& __v) const
2232  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2233 
2234 #ifdef _GLIBCXX_USE_LONG_LONG
2235  virtual iter_type
2236  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2237  ios_base::iostate& __err, long long& __v) const
2238  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2239 
2240  virtual iter_type
2241  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2242  ios_base::iostate& __err, unsigned long long& __v) const
2243  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2244 #endif
2245 
2246  virtual iter_type
2247  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, float&) const;
2248 
2249  virtual iter_type
2250  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2251  double&) const;
2252 
2253  // XXX GLIBCXX_ABI Deprecated
2254 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2255  virtual iter_type
2256  __do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2257  double&) const;
2258 #else
2259  virtual iter_type
2260  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2261  long double&) const;
2262 #endif
2263 
2264  virtual iter_type
2265  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, void*&) const;
2266 
2267  // XXX GLIBCXX_ABI Deprecated
2268 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2269  virtual iter_type
2270  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2271  long double&) const;
2272 #endif
2273  //@}
2274  };
2275 
2276  template<typename _CharT, typename _InIter>
2277  locale::id num_get<_CharT, _InIter>::id;
2278 
2279 
2280  /**
2281  * @brief Primary class template num_put.
2282  * @ingroup locales
2283  *
2284  * This facet encapsulates the code to convert a number to a string. It is
2285  * used by the ostream numeric insertion operators.
2286  *
2287  * The num_put template uses protected virtual functions to provide the
2288  * actual results. The public accessors forward the call to the virtual
2289  * functions. These virtual functions are hooks for developers to
2290  * implement the behavior they require from the num_put facet.
2291  */
2292  template<typename _CharT, typename _OutIter>
2293  class num_put : public locale::facet
2294  {
2295  public:
2296  // Types:
2297  //@{
2298  /// Public typedefs
2299  typedef _CharT char_type;
2300  typedef _OutIter iter_type;
2301  //@}
2302 
2303  /// Numpunct facet id.
2304  static locale::id id;
2305 
2306  /**
2307  * @brief Constructor performs initialization.
2308  *
2309  * This is the constructor provided by the standard.
2310  *
2311  * @param __refs Passed to the base facet class.
2312  */
2313  explicit
2314  num_put(size_t __refs = 0) : facet(__refs) { }
2315 
2316  /**
2317  * @brief Numeric formatting.
2318  *
2319  * Formats the boolean @a v and inserts it into a stream. It does so
2320  * by calling num_put::do_put().
2321  *
2322  * If ios_base::boolalpha is set, writes ctype<CharT>::truename() or
2323  * ctype<CharT>::falsename(). Otherwise formats @a v as an int.
2324  *
2325  * @param __s Stream to write to.
2326  * @param __io Source of locale and flags.
2327  * @param __fill Char_type to use for filling.
2328  * @param __v Value to format and insert.
2329  * @return Iterator after writing.
2330  */
2331  iter_type
2332  put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
2333  { return this->do_put(__s, __io, __fill, __v); }
2334 
2335  //@{
2336  /**
2337  * @brief Numeric formatting.
2338  *
2339  * Formats the integral value @a v and inserts it into a
2340  * stream. It does so by calling num_put::do_put().
2341  *
2342  * Formatting is affected by the flag settings in @a io.
2343  *
2344  * The basic format is affected by the value of io.flags() &
2345  * ios_base::basefield. If equal to ios_base::oct, formats like the
2346  * printf %o specifier. Else if equal to ios_base::hex, formats like
2347  * %x or %X with ios_base::uppercase unset or set respectively.
2348  * Otherwise, formats like %d, %ld, %lld for signed and %u, %lu, %llu
2349  * for unsigned values. Note that if both oct and hex are set, neither
2350  * will take effect.
2351  *
2352  * If ios_base::showpos is set, '+' is output before positive values.
2353  * If ios_base::showbase is set, '0' precedes octal values (except 0)
2354  * and '0[xX]' precedes hex values.
2355  *
2356  * The decimal point character used is numpunct::decimal_point().
2357  * Thousands separators are inserted according to
2358  * numpunct::grouping() and numpunct::thousands_sep().
2359  *
2360  * If io.width() is non-zero, enough @a fill characters are inserted to
2361  * make the result at least that wide. If
2362  * (io.flags() & ios_base::adjustfield) == ios_base::left, result is
2363  * padded at the end. If ios_base::internal, then padding occurs
2364  * immediately after either a '+' or '-' or after '0x' or '0X'.
2365  * Otherwise, padding occurs at the beginning.
2366  *
2367  * @param __s Stream to write to.
2368  * @param __io Source of locale and flags.
2369  * @param __fill Char_type to use for filling.
2370  * @param __v Value to format and insert.
2371  * @return Iterator after writing.
2372  */
2373  iter_type
2374  put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
2375  { return this->do_put(__s, __io, __fill, __v); }
2376 
2377  iter_type
2378  put(iter_type __s, ios_base& __io, char_type __fill,
2379  unsigned long __v) const
2380  { return this->do_put(__s, __io, __fill, __v); }
2381 
2382 #ifdef _GLIBCXX_USE_LONG_LONG
2383  iter_type
2384  put(iter_type __s, ios_base& __io, char_type __fill, long long __v) const
2385  { return this->do_put(__s, __io, __fill, __v); }
2386 
2387  iter_type
2388  put(iter_type __s, ios_base& __io, char_type __fill,
2389  unsigned long long __v) const
2390  { return this->do_put(__s, __io, __fill, __v); }
2391 #endif
2392  //@}
2393 
2394  //@{
2395  /**
2396  * @brief Numeric formatting.
2397  *
2398  * Formats the floating point value @a v and inserts it into a stream.
2399  * It does so by calling num_put::do_put().
2400  *
2401  * Formatting is affected by the flag settings in @a io.
2402  *
2403  * The basic format is affected by the value of io.flags() &
2404  * ios_base::floatfield. If equal to ios_base::fixed, formats like the
2405  * printf %f specifier. Else if equal to ios_base::scientific, formats
2406  * like %e or %E with ios_base::uppercase unset or set respectively.
2407  * Otherwise, formats like %g or %G depending on uppercase. Note that
2408  * if both fixed and scientific are set, the effect will also be like
2409  * %g or %G.
2410  *
2411  * The output precision is given by io.precision(). This precision is
2412  * capped at numeric_limits::digits10 + 2 (different for double and
2413  * long double). The default precision is 6.
2414  *
2415  * If ios_base::showpos is set, '+' is output before positive values.
2416  * If ios_base::showpoint is set, a decimal point will always be
2417  * output.
2418  *
2419  * The decimal point character used is numpunct::decimal_point().
2420  * Thousands separators are inserted according to
2421  * numpunct::grouping() and numpunct::thousands_sep().
2422  *
2423  * If io.width() is non-zero, enough @a fill characters are inserted to
2424  * make the result at least that wide. If
2425  * (io.flags() & ios_base::adjustfield) == ios_base::left, result is
2426  * padded at the end. If ios_base::internal, then padding occurs
2427  * immediately after either a '+' or '-' or after '0x' or '0X'.
2428  * Otherwise, padding occurs at the beginning.
2429  *
2430  * @param __s Stream to write to.
2431  * @param __io Source of locale and flags.
2432  * @param __fill Char_type to use for filling.
2433  * @param __v Value to format and insert.
2434  * @return Iterator after writing.
2435  */
2436  iter_type
2437  put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
2438  { return this->do_put(__s, __io, __fill, __v); }
2439 
2440  iter_type
2441  put(iter_type __s, ios_base& __io, char_type __fill,
2442  long double __v) const
2443  { return this->do_put(__s, __io, __fill, __v); }
2444  //@}
2445 
2446  /**
2447  * @brief Numeric formatting.
2448  *
2449  * Formats the pointer value @a v and inserts it into a stream. It
2450  * does so by calling num_put::do_put().
2451  *
2452  * This function formats @a v as an unsigned long with ios_base::hex
2453  * and ios_base::showbase set.
2454  *
2455  * @param __s Stream to write to.
2456  * @param __io Source of locale and flags.
2457  * @param __fill Char_type to use for filling.
2458  * @param __v Value to format and insert.
2459  * @return Iterator after writing.
2460  */
2461  iter_type
2462  put(iter_type __s, ios_base& __io, char_type __fill,
2463  const void* __v) const
2464  { return this->do_put(__s, __io, __fill, __v); }
2465 
2466  protected:
2467  template<typename _ValueT>
2468  iter_type
2469  _M_insert_float(iter_type, ios_base& __io, char_type __fill,
2470  char __mod, _ValueT __v) const;
2471 
2472  void
2473  _M_group_float(const char* __grouping, size_t __grouping_size,
2474  char_type __sep, const char_type* __p, char_type* __new,
2475  char_type* __cs, int& __len) const;
2476 
2477  template<typename _ValueT>
2478  iter_type
2479  _M_insert_int(iter_type, ios_base& __io, char_type __fill,
2480  _ValueT __v) const;
2481 
2482  void
2483  _M_group_int(const char* __grouping, size_t __grouping_size,
2484  char_type __sep, ios_base& __io, char_type* __new,
2485  char_type* __cs, int& __len) const;
2486 
2487  void
2488  _M_pad(char_type __fill, streamsize __w, ios_base& __io,
2489  char_type* __new, const char_type* __cs, int& __len) const;
2490 
2491  /// Destructor.
2492  virtual
2493  ~num_put() { }
2494 
2495  //@{
2496  /**
2497  * @brief Numeric formatting.
2498  *
2499  * These functions do the work of formatting numeric values and
2500  * inserting them into a stream. This function is a hook for derived
2501  * classes to change the value returned.
2502  *
2503  * @param __s Stream to write to.
2504  * @param __io Source of locale and flags.
2505  * @param __fill Char_type to use for filling.
2506  * @param __v Value to format and insert.
2507  * @return Iterator after writing.
2508  */
2509  virtual iter_type
2510  do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const;
2511 
2512  virtual iter_type
2513  do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
2514  { return _M_insert_int(__s, __io, __fill, __v); }
2515 
2516  virtual iter_type
2517  do_put(iter_type __s, ios_base& __io, char_type __fill,
2518  unsigned long __v) const
2519  { return _M_insert_int(__s, __io, __fill, __v); }
2520 
2521 #ifdef _GLIBCXX_USE_LONG_LONG
2522  virtual iter_type
2523  do_put(iter_type __s, ios_base& __io, char_type __fill,
2524  long long __v) const
2525  { return _M_insert_int(__s, __io, __fill, __v); }
2526 
2527  virtual iter_type
2528  do_put(iter_type __s, ios_base& __io, char_type __fill,
2529  unsigned long long __v) const
2530  { return _M_insert_int(__s, __io, __fill, __v); }
2531 #endif
2532 
2533  virtual iter_type
2534  do_put(iter_type, ios_base&, char_type, double) const;
2535 
2536  // XXX GLIBCXX_ABI Deprecated
2537 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2538  virtual iter_type
2539  __do_put(iter_type, ios_base&, char_type, double) const;
2540 #else
2541  virtual iter_type
2542  do_put(iter_type, ios_base&, char_type, long double) const;
2543 #endif
2544 
2545  virtual iter_type
2546  do_put(iter_type, ios_base&, char_type, const void*) const;
2547 
2548  // XXX GLIBCXX_ABI Deprecated
2549 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2550  virtual iter_type
2551  do_put(iter_type, ios_base&, char_type, long double) const;
2552 #endif
2553  //@}
2554  };
2555 
2556  template <typename _CharT, typename _OutIter>
2557  locale::id num_put<_CharT, _OutIter>::id;
2558 
2559 _GLIBCXX_END_NAMESPACE_LDBL
2560 
2561  // Subclause convenience interfaces, inlines.
2562  // NB: These are inline because, when used in a loop, some compilers
2563  // can hoist the body out of the loop; then it's just as fast as the
2564  // C is*() function.
2565 
2566  /// Convenience interface to ctype.is(ctype_base::space, __c).
2567  template<typename _CharT>
2568  inline bool
2569  isspace(_CharT __c, const locale& __loc)
2570  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::space, __c); }
2571 
2572  /// Convenience interface to ctype.is(ctype_base::print, __c).
2573  template<typename _CharT>
2574  inline bool
2575  isprint(_CharT __c, const locale& __loc)
2576  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::print, __c); }
2577 
2578  /// Convenience interface to ctype.is(ctype_base::cntrl, __c).
2579  template<typename _CharT>
2580  inline bool
2581  iscntrl(_CharT __c, const locale& __loc)
2582  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::cntrl, __c); }
2583 
2584  /// Convenience interface to ctype.is(ctype_base::upper, __c).
2585  template<typename _CharT>
2586  inline bool
2587  isupper(_CharT __c, const locale& __loc)
2588  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::upper, __c); }
2589 
2590  /// Convenience interface to ctype.is(ctype_base::lower, __c).
2591  template<typename _CharT>
2592  inline bool
2593  islower(_CharT __c, const locale& __loc)
2594  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::lower, __c); }
2595 
2596  /// Convenience interface to ctype.is(ctype_base::alpha, __c).
2597  template<typename _CharT>
2598  inline bool
2599  isalpha(_CharT __c, const locale& __loc)
2600  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alpha, __c); }
2601 
2602  /// Convenience interface to ctype.is(ctype_base::digit, __c).
2603  template<typename _CharT>
2604  inline bool
2605  isdigit(_CharT __c, const locale& __loc)
2606  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::digit, __c); }
2607 
2608  /// Convenience interface to ctype.is(ctype_base::punct, __c).
2609  template<typename _CharT>
2610  inline bool
2611  ispunct(_CharT __c, const locale& __loc)
2612  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::punct, __c); }
2613 
2614  /// Convenience interface to ctype.is(ctype_base::xdigit, __c).
2615  template<typename _CharT>
2616  inline bool
2617  isxdigit(_CharT __c, const locale& __loc)
2618  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::xdigit, __c); }
2619 
2620  /// Convenience interface to ctype.is(ctype_base::alnum, __c).
2621  template<typename _CharT>
2622  inline bool
2623  isalnum(_CharT __c, const locale& __loc)
2624  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alnum, __c); }
2625 
2626  /// Convenience interface to ctype.is(ctype_base::graph, __c).
2627  template<typename _CharT>
2628  inline bool
2629  isgraph(_CharT __c, const locale& __loc)
2630  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::graph, __c); }
2631 
2632 #if __cplusplus >= 201103L
2633  /// Convenience interface to ctype.is(ctype_base::blank, __c).
2634  template<typename _CharT>
2635  inline bool
2636  isblank(_CharT __c, const locale& __loc)
2637  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::blank, __c); }
2638 #endif
2639 
2640  /// Convenience interface to ctype.toupper(__c).
2641  template<typename _CharT>
2642  inline _CharT
2643  toupper(_CharT __c, const locale& __loc)
2644  { return use_facet<ctype<_CharT> >(__loc).toupper(__c); }
2645 
2646  /// Convenience interface to ctype.tolower(__c).
2647  template<typename _CharT>
2648  inline _CharT
2649  tolower(_CharT __c, const locale& __loc)
2650  { return use_facet<ctype<_CharT> >(__loc).tolower(__c); }
2651 
2652 _GLIBCXX_END_NAMESPACE_VERSION
2653 } // namespace std
2654 
2655 # include <bits/locale_facets.tcc>
2656 
2657 #endif
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const
Numeric parsing.
Definition: locale_facets.h:2062
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, float &__v) const
Numeric parsing.
Definition: locale_facets.h:2096
std::ctype::id
static locale::id id
The facet id for ctype<char_type>
Definition: locale_facets.h:620
std::__ctype_abstract_base::do_scan_not
virtual const char_type * do_scan_not(mask __m, const char_type *__lo, const char_type *__hi) const =0
Find char_type not matching mask.
std::numpunct::numpunct
numpunct(size_t __refs=0)
Numpunct constructor.
Definition: locale_facets.h:1694
std::num_get::do_get
virtual iter_type do_get(iter_type, iter_type, ios_base &, ios_base::iostate &, bool &) const
Numeric parsing.
Definition: locale_facets.tcc:595
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long long &__v) const
Numeric parsing.
Definition: locale_facets.h:2241
std::ctype::do_tolower
virtual char_type do_tolower(char_type __c) const
Convert to lowercase.
std::numpunct::decimal_point
char_type decimal_point() const
Return decimal point character.
Definition: locale_facets.h:1736
std::locale::facet
Localization functionality base class.The facet class is the base class for a localization feature,...
Definition: locale_classes.h:371
std::ctype< wchar_t >::char_type
wchar_t char_type
Typedef for the template parameter wchar_t.
Definition: locale_facets.h:1191
std::__ctype_abstract_base::do_widen
virtual char_type do_widen(char __c) const =0
Widen char.
std::ctype< char >::tolower
char_type tolower(char_type __c) const
Convert to lowercase.
Definition: locale_facets.h:835
std::num_put::do_put
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
Definition: locale_facets.h:2517
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const
Numeric parsing.
Definition: locale_facets.h:2036
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const
Numeric parsing.
Definition: locale_facets.h:2046
std::numpunct::do_decimal_point
virtual char_type do_decimal_point() const
Return decimal point character.
Definition: locale_facets.h:1823
std::__ctype_abstract_base
Common base for ctype facet.
Definition: locale_facets.h:150
std::ctype::do_narrow
virtual char do_narrow(char_type, char __dfault) const
Narrow char_type to char.
std::ctype< char >::widen
const char * widen(const char *__lo, const char *__hi, char_type *__to) const
Widen char array.
Definition: locale_facets.h:899
std::isspace
bool isspace(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::space, __c).
Definition: locale_facets.h:2569
std::ctype< wchar_t >::id
static locale::id id
The facet id for ctype<wchar_t>
Definition: locale_facets.h:1209
std::num_put::do_put
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.
Definition: locale_facets.h:2528
std::__ctype_abstract_base::do_tolower
virtual char_type do_tolower(char_type __c) const =0
Convert to lowercase.
std::iscntrl
bool iscntrl(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::cntrl, __c).
Definition: locale_facets.h:2581
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
Definition: locale_facets.h:2378
std::num_get
Primary class template num_get.This facet encapsulates the code to parse and return a number from a s...
Definition: locale_facets.h:1952
std::ios_base
The base of the I/O class hierarchy.This class defines everything that can be defined about I/O that ...
Definition: ios_base.h:228
std::__ctype_abstract_base::do_narrow
virtual char do_narrow(char_type __c, char __dfault) const =0
Narrow char_type to char.
std::isgraph
bool isgraph(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::graph, __c).
Definition: locale_facets.h:2629
std::ctype< char >::toupper
const char_type * toupper(char_type *__lo, const char_type *__hi) const
Convert array to uppercase.
Definition: locale_facets.h:819
std::numpunct::numpunct
numpunct(__c_locale __cloc, size_t __refs=0)
Internal constructor. Not for general use.
Definition: locale_facets.h:1722
std::islower
bool islower(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::lower, __c).
Definition: locale_facets.h:2593
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
Definition: locale_facets.h:2374
std::__ctype_abstract_base::is
bool is(mask __m, char_type __c) const
Test char_type classification.
Definition: locale_facets.h:169
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const
Numeric parsing.
Definition: locale_facets.h:2225
std::numpunct::do_falsename
virtual string_type do_falsename() const
Return string representation of bool false.
Definition: locale_facets.h:1874
std::numpunct::grouping
string grouping() const
Return grouping specification.
Definition: locale_facets.h:1780
std::__ctype_abstract_base::toupper
char_type toupper(char_type __c) const
Convert to uppercase.
Definition: locale_facets.h:232
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const
Numeric parsing.
Definition: locale_facets.h:2220
std::num_get::id
static locale::id id
Numpunct facet id.
Definition: locale_facets.h:1963
std::streamsize
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
Definition: postypes.h:98
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const
Numeric parsing.
Definition: locale_facets.h:2236
std::num_put::id
static locale::id id
Numpunct facet id.
Definition: locale_facets.h:2304
std::ctype< char >::id
static locale::id id
The facet id for ctype<char>
Definition: locale_facets.h:703
std::ctype< char >::narrow
const char_type * narrow(const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const
Narrow char array.
Definition: locale_facets.h:964
std::num_put::num_put
num_put(size_t __refs=0)
Constructor performs initialization.
Definition: locale_facets.h:2314
std::numpunct::numpunct
numpunct(__cache_type *__cache, size_t __refs=0)
Internal constructor. Not for general use.
Definition: locale_facets.h:1708
std::ctype::do_scan_not
virtual const char_type * do_scan_not(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type not matching mask.
std::numpunct_byname
class numpunct_byname [22.2.3.2].
Definition: locale_facets.h:1903
std::isdigit
bool isdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::digit, __c).
Definition: locale_facets.h:2605
std::__ctype_abstract_base::do_is
virtual bool do_is(mask __m, char_type __c) const =0
Test char_type classification.
std::__ctype_abstract_base::widen
char_type widen(char __c) const
Widen char to char_type.
Definition: locale_facets.h:293
std::numpunct::char_type
_CharT char_type
Public typedefs.
Definition: locale_facets.h:1676
std::ctype::do_scan_is
virtual const char_type * do_scan_is(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type matching mask.
std::num_get::iter_type
_InIter iter_type
Public typedefs.
Definition: locale_facets.h:1959
std::locale::facet::facet
facet(size_t __refs=0)
Facet constructor.
Definition: locale_classes.h:403
std::__ctype_abstract_base::scan_not
const char_type * scan_not(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type not matching a mask.
Definition: locale_facets.h:218
std::__ctype_abstract_base::tolower
const char_type * tolower(char_type *__lo, const char_type *__hi) const
Convert array to lowercase.
Definition: locale_facets.h:276
std::numpunct::thousands_sep
char_type thousands_sep() const
Return thousands separator character.
Definition: locale_facets.h:1749
std::__ctype_abstract_base::tolower
char_type tolower(char_type __c) const
Convert to lowercase.
Definition: locale_facets.h:261
std::numpunct::do_thousands_sep
virtual char_type do_thousands_sep() const
Return thousands separator character.
Definition: locale_facets.h:1835
std::tolower
_CharT tolower(_CharT __c, const locale &__loc)
Convenience interface to ctype.tolower(__c).
Definition: locale_facets.h:2649
std::numpunct::id
static locale::id id
Numpunct facet id.
Definition: locale_facets.h:1686
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, double &__v) const
Numeric parsing.
Definition: locale_facets.h:2101
std::numpunct::string_type
basic_string< _CharT > string_type
Public typedefs.
Definition: locale_facets.h:1677
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, double __v) const
Numeric formatting.
Definition: locale_facets.h:2437
std::__ctype_abstract_base::char_type
_CharT char_type
Typedef for the template parameter.
Definition: locale_facets.h:155
std
ISO C++ entities toplevel namespace is std.
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long double &__v) const
Numeric parsing.
Definition: locale_facets.h:2106
std::__ctype_abstract_base::is
const char_type * is(const char_type *__lo, const char_type *__hi, mask *__vec) const
Return a mask array.
Definition: locale_facets.h:186
std::ctype< char >::do_narrow
virtual char do_narrow(char_type __c, char __dfault __attribute__((__unused__))) const
Narrow char.
Definition: locale_facets.h:1134
std::num_put::iter_type
_OutIter iter_type
Public typedefs.
Definition: locale_facets.h:2300
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, void *&__v) const
Numeric parsing.
Definition: locale_facets.h:2139
std::num_put::do_put
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, bool __v) const
Numeric formatting.
Definition: locale_facets.tcc:1106
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, bool __v) const
Numeric formatting.
Definition: locale_facets.h:2332
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
Definition: locale_facets.h:2384
std::__ctype_abstract_base::do_toupper
virtual char_type do_toupper(char_type __c) const =0
Convert to uppercase.
std::num_get::~num_get
virtual ~num_get()
Destructor.
Definition: locale_facets.h:2145
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long double __v) const
Numeric formatting.
Definition: locale_facets.h:2441
std::ctype::do_toupper
virtual char_type do_toupper(char_type __c) const
Convert to uppercase.
std::basic_string::c_str
const _CharT * c_str() const noexcept
Return const pointer to null-terminated contents.
Definition: basic_string.h:5128
std::ctype< char >::toupper
char_type toupper(char_type __c) const
Convert to uppercase.
Definition: locale_facets.h:802
std::ctype< char >::narrow
char narrow(char_type __c, char __dfault) const
Narrow char.
Definition: locale_facets.h:931
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const
Numeric parsing.
Definition: locale_facets.h:2041
std::ctype::do_widen
virtual char_type do_widen(char __c) const
Widen char.
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, bool &__v) const
Numeric parsing.
Definition: locale_facets.h:1999
std::isblank
bool isblank(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::blank, __c).
Definition: locale_facets.h:2636
std::isalnum
bool isalnum(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alnum, __c).
Definition: locale_facets.h:2623
std::num_put::char_type
_CharT char_type
Public typedefs.
Definition: locale_facets.h:2299
std::ctype< char >::table
const mask * table() const
Returns a pointer to the mask table provided to the constructor, or the default from classic_table() ...
Definition: locale_facets.h:983
std::num_put::~num_put
virtual ~num_put()
Destructor.
Definition: locale_facets.h:2493
std::__ctype_abstract_base::narrow
const char_type * narrow(const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const
Narrow array to char array.
Definition: locale_facets.h:353
std::isprint
bool isprint(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::print, __c).
Definition: locale_facets.h:2575
std::ctype< char >::do_widen
virtual const char * do_widen(const char *__lo, const char *__hi, char_type *__to) const
Widen char array.
Definition: locale_facets.h:1107
std::__ctype_abstract_base::narrow
char narrow(char_type __c, char __dfault) const
Narrow char_type to char.
Definition: locale_facets.h:331
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const
Numeric parsing.
Definition: locale_facets.h:2057
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const
Numeric parsing.
Definition: locale_facets.h:2230
std::ctype< char >::char_type
char char_type
Typedef for the template parameter char.
Definition: locale_facets.h:686
std::isupper
bool isupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::upper, __c).
Definition: locale_facets.h:2587
std::__ctype_abstract_base::toupper
const char_type * toupper(char_type *__lo, const char_type *__hi) const
Convert array to uppercase.
Definition: locale_facets.h:247
std::ios_base::iostate
_Ios_Iostate iostate
This is a bitmask type.
Definition: ios_base.h:398
std::ispunct
bool ispunct(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::punct, __c).
Definition: locale_facets.h:2611
std::__ctype_abstract_base::scan_is
const char_type * scan_is(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type matching a mask.
Definition: locale_facets.h:202
std::numpunct::falsename
string_type falsename() const
Return string representation of bool false.
Definition: locale_facets.h:1806
std::isalpha
bool isalpha(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alpha, __c).
Definition: locale_facets.h:2599
std::ctype< char >::do_narrow
virtual const char_type * do_narrow(const char_type *__lo, const char_type *__hi, char __dfault __attribute__((__unused__)), char *__to) const
Narrow char array to char array.
Definition: locale_facets.h:1160
std::numpunct::do_grouping
virtual string do_grouping() const
Return grouping specification.
Definition: locale_facets.h:1848
std::num_put::do_put
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
Definition: locale_facets.h:2513
std::locale
Container class for localization functionality.The locale class is first a class wrapper for C librar...
Definition: locale_classes.h:62
std::numpunct::do_truename
virtual string_type do_truename() const
Return string representation of bool true.
Definition: locale_facets.h:1861
std::ctype_byname
class ctype_byname [22.2.1.2].
Definition: locale_facets.h:1478
std::__ctype_abstract_base::widen
const char * widen(const char *__lo, const char *__hi, char_type *__to) const
Widen array to char_type.
Definition: locale_facets.h:312
std::num_get::char_type
_CharT char_type
Public typedefs.
Definition: locale_facets.h:1958
std::__ctype_abstract_base::do_scan_is
virtual const char_type * do_scan_is(mask __m, const char_type *__lo, const char_type *__hi) const =0
Find char_type matching mask.
std::num_put::do_put
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
Definition: locale_facets.h:2523
std::ctype< char >::widen
char_type widen(char __c) const
Widen char.
Definition: locale_facets.h:872
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, const void *__v) const
Numeric formatting.
Definition: locale_facets.h:2462
std::ctype< char >::tolower
const char_type * tolower(char_type *__lo, const char_type *__hi) const
Convert array to lowercase.
Definition: locale_facets.h:852
std::numpunct
Primary class template numpunct.This facet stores several pieces of information related to printing a...
Definition: locale_facets.h:1670
std::locale::id
Facet ID class.The ID class provides facets with an index used to identify them. Every facet class mu...
Definition: locale_classes.h:483
std::num_get::do_get
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const
Numeric parsing.
Definition: locale_facets.h:2215
std::num_put::put
iter_type put(iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.
Definition: locale_facets.h:2388
std::isxdigit
bool isxdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::xdigit, __c).
Definition: locale_facets.h:2617
std::numpunct::truename
string_type truename() const
Return string representation of bool true.
Definition: locale_facets.h:1793
std::num_get::num_get
num_get(size_t __refs=0)
Constructor performs initialization.
Definition: locale_facets.h:1973
std::toupper
_CharT toupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.toupper(__c).
Definition: locale_facets.h:2643
std::num_put
Primary class template num_put.This facet encapsulates the code to convert a number to a string....
Definition: locale_facets.h:2293
std::ctype_base
Base class for ctype.
Definition: ctype_base.h:41
std::num_get::get
iter_type get(iter_type __in, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const
Numeric parsing.
Definition: locale_facets.h:2051
std::ctype
Primary class template ctype facet.This template class defines classification and conversion function...
Definition: locale_facets.h:612
std::ctype::do_is
virtual bool do_is(mask __m, char_type __c) const
Test char_type classification.
std::numpunct::~numpunct
virtual ~numpunct()
Destructor.