libstdc++
locale_facets.h
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1 // Locale support -*- C++ -*-
2 
3 // Copyright (C) 1997-2017 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19 
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 /** @file bits/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>
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>
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>
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  __builtin_memcpy(__to, __lo, __hi - __lo);
904  return __hi;
905  }
906  if (!_M_widen_ok)
907  _M_widen_init();
908  return this->do_widen(__lo, __hi, __to);
909  }
910 
911  /**
912  * @brief Narrow char
913  *
914  * This function converts the char to char using the simplest
915  * reasonable transformation. If the conversion fails, dfault is
916  * returned instead. For an underived ctype<char> facet, @a c
917  * will be returned unchanged.
918  *
919  * This function works as if it returns ctype<char>::do_narrow(c).
920  * do_narrow() must always return the same result for the same input.
921  *
922  * Note: this is not what you want for codepage conversions. See
923  * codecvt for that.
924  *
925  * @param __c The char to convert.
926  * @param __dfault Char to return if conversion fails.
927  * @return The converted character.
928  */
929  char
930  narrow(char_type __c, char __dfault) const
931  {
932  if (_M_narrow[static_cast<unsigned char>(__c)])
933  return _M_narrow[static_cast<unsigned char>(__c)];
934  const char __t = do_narrow(__c, __dfault);
935  if (__t != __dfault)
936  _M_narrow[static_cast<unsigned char>(__c)] = __t;
937  return __t;
938  }
939 
940  /**
941  * @brief Narrow char array
942  *
943  * This function converts each char in the input to char using the
944  * simplest reasonable transformation and writes the results to the
945  * destination array. For any char in the input that cannot be
946  * converted, @a dfault is used instead. For an underived ctype<char>
947  * facet, the argument will be copied unchanged.
948  *
949  * This function works as if it returns ctype<char>::do_narrow(lo, hi,
950  * dfault, to). do_narrow() must always return the same result for the
951  * same input.
952  *
953  * Note: this is not what you want for codepage conversions. See
954  * codecvt for that.
955  *
956  * @param __lo Pointer to start of range.
957  * @param __hi Pointer to end of range.
958  * @param __dfault Char to use if conversion fails.
959  * @param __to Pointer to the destination array.
960  * @return @a __hi.
961  */
962  const char_type*
963  narrow(const char_type* __lo, const char_type* __hi,
964  char __dfault, char* __to) const
965  {
966  if (__builtin_expect(_M_narrow_ok == 1, true))
967  {
968  __builtin_memcpy(__to, __lo, __hi - __lo);
969  return __hi;
970  }
971  if (!_M_narrow_ok)
972  _M_narrow_init();
973  return this->do_narrow(__lo, __hi, __dfault, __to);
974  }
975 
976  // _GLIBCXX_RESOLVE_LIB_DEFECTS
977  // DR 695. ctype<char>::classic_table() not accessible.
978  /// Returns a pointer to the mask table provided to the constructor, or
979  /// the default from classic_table() if none was provided.
980  const mask*
981  table() const throw()
982  { return _M_table; }
983 
984  /// Returns a pointer to the C locale mask table.
985  static const mask*
986  classic_table() throw();
987  protected:
988 
989  /**
990  * @brief Destructor.
991  *
992  * This function deletes table() if @a del was true in the
993  * constructor.
994  */
995  virtual
996  ~ctype();
997 
998  /**
999  * @brief Convert to uppercase.
1000  *
1001  * This virtual function converts the char argument to uppercase if
1002  * possible. If not possible (for example, '2'), returns the argument.
1003  *
1004  * do_toupper() is a hook for a derived facet to change the behavior of
1005  * uppercasing. do_toupper() must always return the same result for
1006  * the same input.
1007  *
1008  * @param __c The char to convert.
1009  * @return The uppercase char if convertible, else @a __c.
1010  */
1011  virtual char_type
1012  do_toupper(char_type __c) const;
1013 
1014  /**
1015  * @brief Convert array to uppercase.
1016  *
1017  * This virtual function converts each char in the range [lo,hi) to
1018  * uppercase if possible. Other chars remain untouched.
1019  *
1020  * do_toupper() is a hook for a derived facet to change the behavior of
1021  * uppercasing. do_toupper() must always return the same result for
1022  * the same input.
1023  *
1024  * @param __lo Pointer to start of range.
1025  * @param __hi Pointer to end of range.
1026  * @return @a __hi.
1027  */
1028  virtual const char_type*
1029  do_toupper(char_type* __lo, const char_type* __hi) const;
1030 
1031  /**
1032  * @brief Convert to lowercase.
1033  *
1034  * This virtual function converts the char argument to lowercase if
1035  * possible. If not possible (for example, '2'), returns the argument.
1036  *
1037  * do_tolower() is a hook for a derived facet to change the behavior of
1038  * lowercasing. do_tolower() must always return the same result for
1039  * the same input.
1040  *
1041  * @param __c The char to convert.
1042  * @return The lowercase char if convertible, else @a __c.
1043  */
1044  virtual char_type
1045  do_tolower(char_type __c) const;
1046 
1047  /**
1048  * @brief Convert array to lowercase.
1049  *
1050  * This virtual function converts each char in the range [lo,hi) to
1051  * lowercase if possible. Other chars remain untouched.
1052  *
1053  * do_tolower() is a hook for a derived facet to change the behavior of
1054  * lowercasing. do_tolower() must always return the same result for
1055  * the same input.
1056  *
1057  * @param __lo Pointer to first char in range.
1058  * @param __hi Pointer to end of range.
1059  * @return @a __hi.
1060  */
1061  virtual const char_type*
1062  do_tolower(char_type* __lo, const char_type* __hi) const;
1063 
1064  /**
1065  * @brief Widen char
1066  *
1067  * This virtual function converts the char to char using the simplest
1068  * reasonable transformation. For an underived ctype<char> facet, the
1069  * argument will be returned unchanged.
1070  *
1071  * do_widen() is a hook for a derived facet to change the behavior of
1072  * widening. do_widen() must always return the same result for the
1073  * same input.
1074  *
1075  * Note: this is not what you want for codepage conversions. See
1076  * codecvt for that.
1077  *
1078  * @param __c The char to convert.
1079  * @return The converted character.
1080  */
1081  virtual char_type
1082  do_widen(char __c) const
1083  { return __c; }
1084 
1085  /**
1086  * @brief Widen char array
1087  *
1088  * This function converts each char in the range [lo,hi) to char using
1089  * the simplest reasonable transformation. For an underived
1090  * ctype<char> facet, the argument will be copied unchanged.
1091  *
1092  * do_widen() is a hook for a derived facet to change the behavior of
1093  * widening. do_widen() must always return the same result for the
1094  * same input.
1095  *
1096  * Note: this is not what you want for codepage conversions. See
1097  * codecvt for that.
1098  *
1099  * @param __lo Pointer to start of range.
1100  * @param __hi Pointer to end of range.
1101  * @param __to Pointer to the destination array.
1102  * @return @a __hi.
1103  */
1104  virtual const char*
1105  do_widen(const char* __lo, const char* __hi, char_type* __to) const
1106  {
1107  __builtin_memcpy(__to, __lo, __hi - __lo);
1108  return __hi;
1109  }
1110 
1111  /**
1112  * @brief Narrow char
1113  *
1114  * This virtual function converts the char to char using the simplest
1115  * reasonable transformation. If the conversion fails, dfault is
1116  * returned instead. For an underived ctype<char> facet, @a c will be
1117  * returned unchanged.
1118  *
1119  * do_narrow() is a hook for a derived facet to change the behavior of
1120  * narrowing. do_narrow() must always return the same result for the
1121  * same input.
1122  *
1123  * Note: this is not what you want for codepage conversions. See
1124  * codecvt for that.
1125  *
1126  * @param __c The char to convert.
1127  * @param __dfault Char to return if conversion fails.
1128  * @return The converted char.
1129  */
1130  virtual char
1131  do_narrow(char_type __c, char __dfault __attribute__((__unused__))) const
1132  { return __c; }
1133 
1134  /**
1135  * @brief Narrow char array to char array
1136  *
1137  * This virtual function converts each char in the range [lo,hi) to
1138  * char using the simplest reasonable transformation and writes the
1139  * results to the destination array. For any char in the input that
1140  * cannot be converted, @a dfault is used instead. For an underived
1141  * ctype<char> facet, the argument will be copied unchanged.
1142  *
1143  * do_narrow() is a hook for a derived facet to change the behavior of
1144  * narrowing. do_narrow() must always return the same result for the
1145  * same input.
1146  *
1147  * Note: this is not what you want for codepage conversions. See
1148  * codecvt for that.
1149  *
1150  * @param __lo Pointer to start of range.
1151  * @param __hi Pointer to end of range.
1152  * @param __dfault Char to use if conversion fails.
1153  * @param __to Pointer to the destination array.
1154  * @return @a __hi.
1155  */
1156  virtual const char_type*
1157  do_narrow(const char_type* __lo, const char_type* __hi,
1158  char __dfault __attribute__((__unused__)), char* __to) const
1159  {
1160  __builtin_memcpy(__to, __lo, __hi - __lo);
1161  return __hi;
1162  }
1163 
1164  private:
1165  void _M_narrow_init() const;
1166  void _M_widen_init() const;
1167  };
1168 
1169 #ifdef _GLIBCXX_USE_WCHAR_T
1170  /**
1171  * @brief The ctype<wchar_t> specialization.
1172  * @ingroup locales
1173  *
1174  * This class defines classification and conversion functions for the
1175  * wchar_t type. It gets used by wchar_t streams for many I/O operations.
1176  * The wchar_t specialization provides a number of optimizations as well.
1177  *
1178  * ctype<wchar_t> inherits its public methods from
1179  * __ctype_abstract_base<wchar_t>.
1180  */
1181  template<>
1182  class ctype<wchar_t> : public __ctype_abstract_base<wchar_t>
1183  {
1184  public:
1185  // Types:
1186  /// Typedef for the template parameter wchar_t.
1187  typedef wchar_t char_type;
1188  typedef wctype_t __wmask_type;
1189 
1190  protected:
1191  __c_locale _M_c_locale_ctype;
1192 
1193  // Pre-computed narrowed and widened chars.
1194  bool _M_narrow_ok;
1195  char _M_narrow[128];
1196  wint_t _M_widen[1 + static_cast<unsigned char>(-1)];
1197 
1198  // Pre-computed elements for do_is.
1199  mask _M_bit[16];
1200  __wmask_type _M_wmask[16];
1201 
1202  public:
1203  // Data Members:
1204  /// The facet id for ctype<wchar_t>
1205  static locale::id id;
1206 
1207  /**
1208  * @brief Constructor performs initialization.
1209  *
1210  * This is the constructor provided by the standard.
1211  *
1212  * @param __refs Passed to the base facet class.
1213  */
1214  explicit
1215  ctype(size_t __refs = 0);
1216 
1217  /**
1218  * @brief Constructor performs static initialization.
1219  *
1220  * This constructor is used to construct the initial C locale facet.
1221  *
1222  * @param __cloc Handle to C locale data.
1223  * @param __refs Passed to the base facet class.
1224  */
1225  explicit
1226  ctype(__c_locale __cloc, size_t __refs = 0);
1227 
1228  protected:
1229  __wmask_type
1230  _M_convert_to_wmask(const mask __m) const throw();
1231 
1232  /// Destructor
1233  virtual
1234  ~ctype();
1235 
1236  /**
1237  * @brief Test wchar_t classification.
1238  *
1239  * This function finds a mask M for @a c and compares it to mask @a m.
1240  *
1241  * do_is() is a hook for a derived facet to change the behavior of
1242  * classifying. do_is() must always return the same result for the
1243  * same input.
1244  *
1245  * @param __c The wchar_t to find the mask of.
1246  * @param __m The mask to compare against.
1247  * @return (M & __m) != 0.
1248  */
1249  virtual bool
1250  do_is(mask __m, char_type __c) const;
1251 
1252  /**
1253  * @brief Return a mask array.
1254  *
1255  * This function finds the mask for each wchar_t in the range [lo,hi)
1256  * and successively writes it to vec. vec must have as many elements
1257  * as the input.
1258  *
1259  * do_is() is a hook for a derived facet to change the behavior of
1260  * classifying. do_is() must always return the same result for the
1261  * same input.
1262  *
1263  * @param __lo Pointer to start of range.
1264  * @param __hi Pointer to end of range.
1265  * @param __vec Pointer to an array of mask storage.
1266  * @return @a __hi.
1267  */
1268  virtual const char_type*
1269  do_is(const char_type* __lo, const char_type* __hi, mask* __vec) const;
1270 
1271  /**
1272  * @brief Find wchar_t matching mask
1273  *
1274  * This function searches for and returns the first wchar_t c in
1275  * [__lo,__hi) for which is(__m,c) is true.
1276  *
1277  * do_scan_is() is a hook for a derived facet to change the behavior of
1278  * match searching. do_is() must always return the same result for the
1279  * same input.
1280  *
1281  * @param __m The mask to compare against.
1282  * @param __lo Pointer to start of range.
1283  * @param __hi Pointer to end of range.
1284  * @return Pointer to a matching wchar_t if found, else @a __hi.
1285  */
1286  virtual const char_type*
1287  do_scan_is(mask __m, const char_type* __lo, const char_type* __hi) const;
1288 
1289  /**
1290  * @brief Find wchar_t not matching mask
1291  *
1292  * This function searches for and returns a pointer to the first
1293  * wchar_t c of [__lo,__hi) for which is(__m,c) is false.
1294  *
1295  * do_scan_is() is a hook for a derived facet to change the behavior of
1296  * match searching. do_is() must always return the same result for the
1297  * same input.
1298  *
1299  * @param __m The mask to compare against.
1300  * @param __lo Pointer to start of range.
1301  * @param __hi Pointer to end of range.
1302  * @return Pointer to a non-matching wchar_t if found, else @a __hi.
1303  */
1304  virtual const char_type*
1305  do_scan_not(mask __m, const char_type* __lo,
1306  const char_type* __hi) const;
1307 
1308  /**
1309  * @brief Convert to uppercase.
1310  *
1311  * This virtual function converts the wchar_t argument to uppercase if
1312  * possible. If not possible (for example, '2'), returns the argument.
1313  *
1314  * do_toupper() is a hook for a derived facet to change the behavior of
1315  * uppercasing. do_toupper() must always return the same result for
1316  * the same input.
1317  *
1318  * @param __c The wchar_t to convert.
1319  * @return The uppercase wchar_t if convertible, else @a __c.
1320  */
1321  virtual char_type
1322  do_toupper(char_type __c) const;
1323 
1324  /**
1325  * @brief Convert array to uppercase.
1326  *
1327  * This virtual function converts each wchar_t in the range [lo,hi) to
1328  * uppercase if possible. Other elements remain untouched.
1329  *
1330  * do_toupper() is a hook for a derived facet to change the behavior of
1331  * uppercasing. do_toupper() must always return the same result for
1332  * the same input.
1333  *
1334  * @param __lo Pointer to start of range.
1335  * @param __hi Pointer to end of range.
1336  * @return @a __hi.
1337  */
1338  virtual const char_type*
1339  do_toupper(char_type* __lo, const char_type* __hi) const;
1340 
1341  /**
1342  * @brief Convert to lowercase.
1343  *
1344  * This virtual function converts the argument to lowercase if
1345  * possible. If not possible (for example, '2'), returns the argument.
1346  *
1347  * do_tolower() is a hook for a derived facet to change the behavior of
1348  * lowercasing. do_tolower() must always return the same result for
1349  * the same input.
1350  *
1351  * @param __c The wchar_t to convert.
1352  * @return The lowercase wchar_t if convertible, else @a __c.
1353  */
1354  virtual char_type
1355  do_tolower(char_type __c) const;
1356 
1357  /**
1358  * @brief Convert array to lowercase.
1359  *
1360  * This virtual function converts each wchar_t in the range [lo,hi) to
1361  * lowercase if possible. Other elements remain untouched.
1362  *
1363  * do_tolower() is a hook for a derived facet to change the behavior of
1364  * lowercasing. do_tolower() must always return the same result for
1365  * the same input.
1366  *
1367  * @param __lo Pointer to start of range.
1368  * @param __hi Pointer to end of range.
1369  * @return @a __hi.
1370  */
1371  virtual const char_type*
1372  do_tolower(char_type* __lo, const char_type* __hi) const;
1373 
1374  /**
1375  * @brief Widen char to wchar_t
1376  *
1377  * This virtual function converts the char to wchar_t using the
1378  * simplest reasonable transformation. For an underived ctype<wchar_t>
1379  * facet, the argument will be cast to wchar_t.
1380  *
1381  * do_widen() is a hook for a derived facet to change the behavior of
1382  * widening. do_widen() must always return the same result for the
1383  * same input.
1384  *
1385  * Note: this is not what you want for codepage conversions. See
1386  * codecvt for that.
1387  *
1388  * @param __c The char to convert.
1389  * @return The converted wchar_t.
1390  */
1391  virtual char_type
1392  do_widen(char __c) const;
1393 
1394  /**
1395  * @brief Widen char array to wchar_t array
1396  *
1397  * This function converts each char in the input to wchar_t using the
1398  * simplest reasonable transformation. For an underived ctype<wchar_t>
1399  * facet, the argument will be copied, casting each element to wchar_t.
1400  *
1401  * do_widen() is a hook for a derived facet to change the behavior of
1402  * widening. do_widen() must always return the same result for the
1403  * same input.
1404  *
1405  * Note: this is not what you want for codepage conversions. See
1406  * codecvt for that.
1407  *
1408  * @param __lo Pointer to start range.
1409  * @param __hi Pointer to end of range.
1410  * @param __to Pointer to the destination array.
1411  * @return @a __hi.
1412  */
1413  virtual const char*
1414  do_widen(const char* __lo, const char* __hi, char_type* __to) const;
1415 
1416  /**
1417  * @brief Narrow wchar_t to char
1418  *
1419  * This virtual function converts the argument to char using
1420  * the simplest reasonable transformation. If the conversion
1421  * fails, dfault is returned instead. For an underived
1422  * ctype<wchar_t> facet, @a c will be cast to char and
1423  * returned.
1424  *
1425  * do_narrow() is a hook for a derived facet to change the
1426  * behavior of narrowing. do_narrow() must always return the
1427  * same result for the same input.
1428  *
1429  * Note: this is not what you want for codepage conversions. See
1430  * codecvt for that.
1431  *
1432  * @param __c The wchar_t to convert.
1433  * @param __dfault Char to return if conversion fails.
1434  * @return The converted char.
1435  */
1436  virtual char
1437  do_narrow(char_type __c, char __dfault) const;
1438 
1439  /**
1440  * @brief Narrow wchar_t array to char array
1441  *
1442  * This virtual function converts each wchar_t in the range [lo,hi) to
1443  * char using the simplest reasonable transformation and writes the
1444  * results to the destination array. For any wchar_t in the input that
1445  * cannot be converted, @a dfault is used instead. For an underived
1446  * ctype<wchar_t> facet, the argument will be copied, casting each
1447  * element to char.
1448  *
1449  * do_narrow() is a hook for a derived facet to change the behavior of
1450  * narrowing. do_narrow() must always return the same result for the
1451  * same input.
1452  *
1453  * Note: this is not what you want for codepage conversions. See
1454  * codecvt for that.
1455  *
1456  * @param __lo Pointer to start of range.
1457  * @param __hi Pointer to end of range.
1458  * @param __dfault Char to use if conversion fails.
1459  * @param __to Pointer to the destination array.
1460  * @return @a __hi.
1461  */
1462  virtual const char_type*
1463  do_narrow(const char_type* __lo, const char_type* __hi,
1464  char __dfault, char* __to) const;
1465 
1466  // For use at construction time only.
1467  void
1468  _M_initialize_ctype() throw();
1469  };
1470 #endif //_GLIBCXX_USE_WCHAR_T
1471 
1472  /// class ctype_byname [22.2.1.2].
1473  template<typename _CharT>
1474  class ctype_byname : public ctype<_CharT>
1475  {
1476  public:
1477  typedef typename ctype<_CharT>::mask mask;
1478 
1479  explicit
1480  ctype_byname(const char* __s, size_t __refs = 0);
1481 
1482 #if __cplusplus >= 201103L
1483  explicit
1484  ctype_byname(const string& __s, size_t __refs = 0)
1485  : ctype_byname(__s.c_str(), __refs) { }
1486 #endif
1487 
1488  protected:
1489  virtual
1490  ~ctype_byname() { };
1491  };
1492 
1493  /// 22.2.1.4 Class ctype_byname specializations.
1494  template<>
1495  class ctype_byname<char> : public ctype<char>
1496  {
1497  public:
1498  explicit
1499  ctype_byname(const char* __s, size_t __refs = 0);
1500 
1501 #if __cplusplus >= 201103L
1502  explicit
1503  ctype_byname(const string& __s, size_t __refs = 0);
1504 #endif
1505 
1506  protected:
1507  virtual
1508  ~ctype_byname();
1509  };
1510 
1511 #ifdef _GLIBCXX_USE_WCHAR_T
1512  template<>
1513  class ctype_byname<wchar_t> : public ctype<wchar_t>
1514  {
1515  public:
1516  explicit
1517  ctype_byname(const char* __s, size_t __refs = 0);
1518 
1519 #if __cplusplus >= 201103L
1520  explicit
1521  ctype_byname(const string& __s, size_t __refs = 0);
1522 #endif
1523 
1524  protected:
1525  virtual
1526  ~ctype_byname();
1527  };
1528 #endif
1529 
1530 _GLIBCXX_END_NAMESPACE_VERSION
1531 } // namespace
1532 
1533 // Include host and configuration specific ctype inlines.
1534 #include <bits/ctype_inline.h>
1535 
1536 namespace std _GLIBCXX_VISIBILITY(default)
1537 {
1538 _GLIBCXX_BEGIN_NAMESPACE_VERSION
1539 
1540  // 22.2.2 The numeric category.
1541  class __num_base
1542  {
1543  public:
1544  // NB: Code depends on the order of _S_atoms_out elements.
1545  // Below are the indices into _S_atoms_out.
1546  enum
1547  {
1548  _S_ominus,
1549  _S_oplus,
1550  _S_ox,
1551  _S_oX,
1552  _S_odigits,
1553  _S_odigits_end = _S_odigits + 16,
1554  _S_oudigits = _S_odigits_end,
1555  _S_oudigits_end = _S_oudigits + 16,
1556  _S_oe = _S_odigits + 14, // For scientific notation, 'e'
1557  _S_oE = _S_oudigits + 14, // For scientific notation, 'E'
1558  _S_oend = _S_oudigits_end
1559  };
1560 
1561  // A list of valid numeric literals for output. This array
1562  // contains chars that will be passed through the current locale's
1563  // ctype<_CharT>.widen() and then used to render numbers.
1564  // For the standard "C" locale, this is
1565  // "-+xX0123456789abcdef0123456789ABCDEF".
1566  static const char* _S_atoms_out;
1567 
1568  // String literal of acceptable (narrow) input, for num_get.
1569  // "-+xX0123456789abcdefABCDEF"
1570  static const char* _S_atoms_in;
1571 
1572  enum
1573  {
1574  _S_iminus,
1575  _S_iplus,
1576  _S_ix,
1577  _S_iX,
1578  _S_izero,
1579  _S_ie = _S_izero + 14,
1580  _S_iE = _S_izero + 20,
1581  _S_iend = 26
1582  };
1583 
1584  // num_put
1585  // Construct and return valid scanf format for floating point types.
1586  static void
1587  _S_format_float(const ios_base& __io, char* __fptr, char __mod) throw();
1588  };
1589 
1590  template<typename _CharT>
1591  struct __numpunct_cache : public locale::facet
1592  {
1593  const char* _M_grouping;
1594  size_t _M_grouping_size;
1595  bool _M_use_grouping;
1596  const _CharT* _M_truename;
1597  size_t _M_truename_size;
1598  const _CharT* _M_falsename;
1599  size_t _M_falsename_size;
1600  _CharT _M_decimal_point;
1601  _CharT _M_thousands_sep;
1602 
1603  // A list of valid numeric literals for output: in the standard
1604  // "C" locale, this is "-+xX0123456789abcdef0123456789ABCDEF".
1605  // This array contains the chars after having been passed
1606  // through the current locale's ctype<_CharT>.widen().
1607  _CharT _M_atoms_out[__num_base::_S_oend];
1608 
1609  // A list of valid numeric literals for input: in the standard
1610  // "C" locale, this is "-+xX0123456789abcdefABCDEF"
1611  // This array contains the chars after having been passed
1612  // through the current locale's ctype<_CharT>.widen().
1613  _CharT _M_atoms_in[__num_base::_S_iend];
1614 
1615  bool _M_allocated;
1616 
1617  __numpunct_cache(size_t __refs = 0)
1618  : facet(__refs), _M_grouping(0), _M_grouping_size(0),
1619  _M_use_grouping(false),
1620  _M_truename(0), _M_truename_size(0), _M_falsename(0),
1621  _M_falsename_size(0), _M_decimal_point(_CharT()),
1622  _M_thousands_sep(_CharT()), _M_allocated(false)
1623  { }
1624 
1625  ~__numpunct_cache();
1626 
1627  void
1628  _M_cache(const locale& __loc);
1629 
1630  private:
1631  __numpunct_cache&
1632  operator=(const __numpunct_cache&);
1633 
1634  explicit
1635  __numpunct_cache(const __numpunct_cache&);
1636  };
1637 
1638  template<typename _CharT>
1639  __numpunct_cache<_CharT>::~__numpunct_cache()
1640  {
1641  if (_M_allocated)
1642  {
1643  delete [] _M_grouping;
1644  delete [] _M_truename;
1645  delete [] _M_falsename;
1646  }
1647  }
1648 
1649 _GLIBCXX_BEGIN_NAMESPACE_CXX11
1650 
1651  /**
1652  * @brief Primary class template numpunct.
1653  * @ingroup locales
1654  *
1655  * This facet stores several pieces of information related to printing and
1656  * scanning numbers, such as the decimal point character. It takes a
1657  * template parameter specifying the char type. The numpunct facet is
1658  * used by streams for many I/O operations involving numbers.
1659  *
1660  * The numpunct template uses protected virtual functions to provide the
1661  * actual results. The public accessors forward the call to the virtual
1662  * functions. These virtual functions are hooks for developers to
1663  * implement the behavior they require from a numpunct facet.
1664  */
1665  template<typename _CharT>
1666  class numpunct : public locale::facet
1667  {
1668  public:
1669  // Types:
1670  //@{
1671  /// Public typedefs
1672  typedef _CharT char_type;
1674  //@}
1675  typedef __numpunct_cache<_CharT> __cache_type;
1676 
1677  protected:
1678  __cache_type* _M_data;
1679 
1680  public:
1681  /// Numpunct facet id.
1682  static locale::id id;
1683 
1684  /**
1685  * @brief Numpunct constructor.
1686  *
1687  * @param __refs Refcount to pass to the base class.
1688  */
1689  explicit
1690  numpunct(size_t __refs = 0)
1691  : facet(__refs), _M_data(0)
1692  { _M_initialize_numpunct(); }
1693 
1694  /**
1695  * @brief Internal constructor. Not for general use.
1696  *
1697  * This is a constructor for use by the library itself to set up the
1698  * predefined locale facets.
1699  *
1700  * @param __cache __numpunct_cache object.
1701  * @param __refs Refcount to pass to the base class.
1702  */
1703  explicit
1704  numpunct(__cache_type* __cache, size_t __refs = 0)
1705  : facet(__refs), _M_data(__cache)
1706  { _M_initialize_numpunct(); }
1707 
1708  /**
1709  * @brief Internal constructor. Not for general use.
1710  *
1711  * This is a constructor for use by the library itself to set up new
1712  * locales.
1713  *
1714  * @param __cloc The C locale.
1715  * @param __refs Refcount to pass to the base class.
1716  */
1717  explicit
1718  numpunct(__c_locale __cloc, size_t __refs = 0)
1719  : facet(__refs), _M_data(0)
1720  { _M_initialize_numpunct(__cloc); }
1721 
1722  /**
1723  * @brief Return decimal point character.
1724  *
1725  * This function returns a char_type to use as a decimal point. It
1726  * does so by returning returning
1727  * numpunct<char_type>::do_decimal_point().
1728  *
1729  * @return @a char_type representing a decimal point.
1730  */
1731  char_type
1733  { return this->do_decimal_point(); }
1734 
1735  /**
1736  * @brief Return thousands separator character.
1737  *
1738  * This function returns a char_type to use as a thousands
1739  * separator. It does so by returning returning
1740  * numpunct<char_type>::do_thousands_sep().
1741  *
1742  * @return char_type representing a thousands separator.
1743  */
1744  char_type
1746  { return this->do_thousands_sep(); }
1747 
1748  /**
1749  * @brief Return grouping specification.
1750  *
1751  * This function returns a string representing groupings for the
1752  * integer part of a number. Groupings indicate where thousands
1753  * separators should be inserted in the integer part of a number.
1754  *
1755  * Each char in the return string is interpret as an integer
1756  * rather than a character. These numbers represent the number
1757  * of digits in a group. The first char in the string
1758  * represents the number of digits in the least significant
1759  * group. If a char is negative, it indicates an unlimited
1760  * number of digits for the group. If more chars from the
1761  * string are required to group a number, the last char is used
1762  * repeatedly.
1763  *
1764  * For example, if the grouping() returns "\003\002" and is
1765  * applied to the number 123456789, this corresponds to
1766  * 12,34,56,789. Note that if the string was "32", this would
1767  * put more than 50 digits into the least significant group if
1768  * the character set is ASCII.
1769  *
1770  * The string is returned by calling
1771  * numpunct<char_type>::do_grouping().
1772  *
1773  * @return string representing grouping specification.
1774  */
1775  string
1776  grouping() const
1777  { return this->do_grouping(); }
1778 
1779  /**
1780  * @brief Return string representation of bool true.
1781  *
1782  * This function returns a string_type containing the text
1783  * representation for true bool variables. It does so by calling
1784  * numpunct<char_type>::do_truename().
1785  *
1786  * @return string_type representing printed form of true.
1787  */
1788  string_type
1789  truename() const
1790  { return this->do_truename(); }
1791 
1792  /**
1793  * @brief Return string representation of bool false.
1794  *
1795  * This function returns a string_type containing the text
1796  * representation for false bool variables. It does so by calling
1797  * numpunct<char_type>::do_falsename().
1798  *
1799  * @return string_type representing printed form of false.
1800  */
1801  string_type
1802  falsename() const
1803  { return this->do_falsename(); }
1804 
1805  protected:
1806  /// Destructor.
1807  virtual
1808  ~numpunct();
1809 
1810  /**
1811  * @brief Return decimal point character.
1812  *
1813  * Returns a char_type to use as a decimal point. This function is a
1814  * hook for derived classes to change the value returned.
1815  *
1816  * @return @a char_type representing a decimal point.
1817  */
1818  virtual char_type
1820  { return _M_data->_M_decimal_point; }
1821 
1822  /**
1823  * @brief Return thousands separator character.
1824  *
1825  * Returns a char_type to use as a thousands separator. This function
1826  * is a hook for derived classes to change the value returned.
1827  *
1828  * @return @a char_type representing a thousands separator.
1829  */
1830  virtual char_type
1832  { return _M_data->_M_thousands_sep; }
1833 
1834  /**
1835  * @brief Return grouping specification.
1836  *
1837  * Returns a string representing groupings for the integer part of a
1838  * number. This function is a hook for derived classes to change the
1839  * value returned. @see grouping() for details.
1840  *
1841  * @return String representing grouping specification.
1842  */
1843  virtual string
1844  do_grouping() const
1845  { return _M_data->_M_grouping; }
1846 
1847  /**
1848  * @brief Return string representation of bool true.
1849  *
1850  * Returns a string_type containing the text representation for true
1851  * bool variables. This function is a hook for derived classes to
1852  * change the value returned.
1853  *
1854  * @return string_type representing printed form of true.
1855  */
1856  virtual string_type
1857  do_truename() const
1858  { return _M_data->_M_truename; }
1859 
1860  /**
1861  * @brief Return string representation of bool false.
1862  *
1863  * Returns a string_type containing the text representation for false
1864  * bool variables. This function is a hook for derived classes to
1865  * change the value returned.
1866  *
1867  * @return string_type representing printed form of false.
1868  */
1869  virtual string_type
1871  { return _M_data->_M_falsename; }
1872 
1873  // For use at construction time only.
1874  void
1875  _M_initialize_numpunct(__c_locale __cloc = 0);
1876  };
1877 
1878  template<typename _CharT>
1880 
1881  template<>
1883 
1884  template<>
1885  void
1886  numpunct<char>::_M_initialize_numpunct(__c_locale __cloc);
1887 
1888 #ifdef _GLIBCXX_USE_WCHAR_T
1889  template<>
1891 
1892  template<>
1893  void
1894  numpunct<wchar_t>::_M_initialize_numpunct(__c_locale __cloc);
1895 #endif
1896 
1897  /// class numpunct_byname [22.2.3.2].
1898  template<typename _CharT>
1899  class numpunct_byname : public numpunct<_CharT>
1900  {
1901  public:
1902  typedef _CharT char_type;
1904 
1905  explicit
1906  numpunct_byname(const char* __s, size_t __refs = 0)
1907  : numpunct<_CharT>(__refs)
1908  {
1909  if (__builtin_strcmp(__s, "C") != 0
1910  && __builtin_strcmp(__s, "POSIX") != 0)
1911  {
1912  __c_locale __tmp;
1913  this->_S_create_c_locale(__tmp, __s);
1914  this->_M_initialize_numpunct(__tmp);
1915  this->_S_destroy_c_locale(__tmp);
1916  }
1917  }
1918 
1919 #if __cplusplus >= 201103L
1920  explicit
1921  numpunct_byname(const string& __s, size_t __refs = 0)
1922  : numpunct_byname(__s.c_str(), __refs) { }
1923 #endif
1924 
1925  protected:
1926  virtual
1927  ~numpunct_byname() { }
1928  };
1929 
1930 _GLIBCXX_END_NAMESPACE_CXX11
1931 
1932 _GLIBCXX_BEGIN_NAMESPACE_LDBL
1933 
1934  /**
1935  * @brief Primary class template num_get.
1936  * @ingroup locales
1937  *
1938  * This facet encapsulates the code to parse and return a number
1939  * from a string. It is used by the istream numeric extraction
1940  * operators.
1941  *
1942  * The num_get template uses protected virtual functions to provide the
1943  * actual results. The public accessors forward the call to the virtual
1944  * functions. These virtual functions are hooks for developers to
1945  * implement the behavior they require from the num_get facet.
1946  */
1947  template<typename _CharT, typename _InIter>
1948  class num_get : public locale::facet
1949  {
1950  public:
1951  // Types:
1952  //@{
1953  /// Public typedefs
1954  typedef _CharT char_type;
1955  typedef _InIter iter_type;
1956  //@}
1957 
1958  /// Numpunct facet id.
1959  static locale::id id;
1960 
1961  /**
1962  * @brief Constructor performs initialization.
1963  *
1964  * This is the constructor provided by the standard.
1965  *
1966  * @param __refs Passed to the base facet class.
1967  */
1968  explicit
1969  num_get(size_t __refs = 0) : facet(__refs) { }
1970 
1971  /**
1972  * @brief Numeric parsing.
1973  *
1974  * Parses the input stream into the bool @a v. It does so by calling
1975  * num_get::do_get().
1976  *
1977  * If ios_base::boolalpha is set, attempts to read
1978  * ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets
1979  * @a v to true or false if successful. Sets err to
1980  * ios_base::failbit if reading the string fails. Sets err to
1981  * ios_base::eofbit if the stream is emptied.
1982  *
1983  * If ios_base::boolalpha is not set, proceeds as with reading a long,
1984  * except if the value is 1, sets @a v to true, if the value is 0, sets
1985  * @a v to false, and otherwise set err to ios_base::failbit.
1986  *
1987  * @param __in Start of input stream.
1988  * @param __end End of input stream.
1989  * @param __io Source of locale and flags.
1990  * @param __err Error flags to set.
1991  * @param __v Value to format and insert.
1992  * @return Iterator after reading.
1993  */
1994  iter_type
1995  get(iter_type __in, iter_type __end, ios_base& __io,
1996  ios_base::iostate& __err, bool& __v) const
1997  { return this->do_get(__in, __end, __io, __err, __v); }
1998 
1999  //@{
2000  /**
2001  * @brief Numeric parsing.
2002  *
2003  * Parses the input stream into the integral variable @a v. It does so
2004  * by calling num_get::do_get().
2005  *
2006  * Parsing is affected by the flag settings in @a io.
2007  *
2008  * The basic parse is affected by the value of io.flags() &
2009  * ios_base::basefield. If equal to ios_base::oct, parses like the
2010  * scanf %o specifier. Else if equal to ios_base::hex, parses like %X
2011  * specifier. Else if basefield equal to 0, parses like the %i
2012  * specifier. Otherwise, parses like %d for signed and %u for unsigned
2013  * types. The matching type length modifier is also used.
2014  *
2015  * Digit grouping is interpreted according to
2016  * numpunct::grouping() and numpunct::thousands_sep(). If the
2017  * pattern of digit groups isn't consistent, sets err to
2018  * ios_base::failbit.
2019  *
2020  * If parsing the string yields a valid value for @a v, @a v is set.
2021  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2022  * Sets err to ios_base::eofbit if the stream is emptied.
2023  *
2024  * @param __in Start of input stream.
2025  * @param __end End of input stream.
2026  * @param __io Source of locale and flags.
2027  * @param __err Error flags to set.
2028  * @param __v Value to format and insert.
2029  * @return Iterator after reading.
2030  */
2031  iter_type
2032  get(iter_type __in, iter_type __end, ios_base& __io,
2033  ios_base::iostate& __err, long& __v) const
2034  { return this->do_get(__in, __end, __io, __err, __v); }
2035 
2036  iter_type
2037  get(iter_type __in, iter_type __end, ios_base& __io,
2038  ios_base::iostate& __err, unsigned short& __v) const
2039  { return this->do_get(__in, __end, __io, __err, __v); }
2040 
2041  iter_type
2042  get(iter_type __in, iter_type __end, ios_base& __io,
2043  ios_base::iostate& __err, unsigned int& __v) const
2044  { return this->do_get(__in, __end, __io, __err, __v); }
2045 
2046  iter_type
2047  get(iter_type __in, iter_type __end, ios_base& __io,
2048  ios_base::iostate& __err, unsigned long& __v) const
2049  { return this->do_get(__in, __end, __io, __err, __v); }
2050 
2051 #ifdef _GLIBCXX_USE_LONG_LONG
2052  iter_type
2053  get(iter_type __in, iter_type __end, ios_base& __io,
2054  ios_base::iostate& __err, long long& __v) const
2055  { return this->do_get(__in, __end, __io, __err, __v); }
2056 
2057  iter_type
2058  get(iter_type __in, iter_type __end, ios_base& __io,
2059  ios_base::iostate& __err, unsigned long long& __v) const
2060  { return this->do_get(__in, __end, __io, __err, __v); }
2061 #endif
2062  //@}
2063 
2064  //@{
2065  /**
2066  * @brief Numeric parsing.
2067  *
2068  * Parses the input stream into the integral variable @a v. It does so
2069  * by calling num_get::do_get().
2070  *
2071  * The input characters are parsed like the scanf %g specifier. The
2072  * matching type length modifier is also used.
2073  *
2074  * The decimal point character used is numpunct::decimal_point().
2075  * Digit grouping is interpreted according to
2076  * numpunct::grouping() and numpunct::thousands_sep(). If the
2077  * pattern of digit groups isn't consistent, sets err to
2078  * ios_base::failbit.
2079  *
2080  * If parsing the string yields a valid value for @a v, @a v is set.
2081  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2082  * Sets err to ios_base::eofbit if the stream is emptied.
2083  *
2084  * @param __in Start of input stream.
2085  * @param __end End of input stream.
2086  * @param __io Source of locale and flags.
2087  * @param __err Error flags to set.
2088  * @param __v Value to format and insert.
2089  * @return Iterator after reading.
2090  */
2091  iter_type
2092  get(iter_type __in, iter_type __end, ios_base& __io,
2093  ios_base::iostate& __err, float& __v) const
2094  { return this->do_get(__in, __end, __io, __err, __v); }
2095 
2096  iter_type
2097  get(iter_type __in, iter_type __end, ios_base& __io,
2098  ios_base::iostate& __err, double& __v) const
2099  { return this->do_get(__in, __end, __io, __err, __v); }
2100 
2101  iter_type
2102  get(iter_type __in, iter_type __end, ios_base& __io,
2103  ios_base::iostate& __err, long double& __v) const
2104  { return this->do_get(__in, __end, __io, __err, __v); }
2105  //@}
2106 
2107  /**
2108  * @brief Numeric parsing.
2109  *
2110  * Parses the input stream into the pointer variable @a v. It does so
2111  * by calling num_get::do_get().
2112  *
2113  * The input characters are parsed like the scanf %p specifier.
2114  *
2115  * Digit grouping is interpreted according to
2116  * numpunct::grouping() and numpunct::thousands_sep(). If the
2117  * pattern of digit groups isn't consistent, sets err to
2118  * ios_base::failbit.
2119  *
2120  * Note that the digit grouping effect for pointers is a bit ambiguous
2121  * in the standard and shouldn't be relied on. See DR 344.
2122  *
2123  * If parsing the string yields a valid value for @a v, @a v is set.
2124  * Otherwise, sets err to ios_base::failbit and leaves @a v unaltered.
2125  * Sets err to ios_base::eofbit if the stream is emptied.
2126  *
2127  * @param __in Start of input stream.
2128  * @param __end End of input stream.
2129  * @param __io Source of locale and flags.
2130  * @param __err Error flags to set.
2131  * @param __v Value to format and insert.
2132  * @return Iterator after reading.
2133  */
2134  iter_type
2135  get(iter_type __in, iter_type __end, ios_base& __io,
2136  ios_base::iostate& __err, void*& __v) const
2137  { return this->do_get(__in, __end, __io, __err, __v); }
2138 
2139  protected:
2140  /// Destructor.
2141  virtual ~num_get() { }
2142 
2143  _GLIBCXX_DEFAULT_ABI_TAG
2144  iter_type
2145  _M_extract_float(iter_type, iter_type, ios_base&, ios_base::iostate&,
2146  string&) const;
2147 
2148  template<typename _ValueT>
2149  _GLIBCXX_DEFAULT_ABI_TAG
2150  iter_type
2151  _M_extract_int(iter_type, iter_type, ios_base&, ios_base::iostate&,
2152  _ValueT&) const;
2153 
2154  template<typename _CharT2>
2155  typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value, int>::__type
2156  _M_find(const _CharT2*, size_t __len, _CharT2 __c) const
2157  {
2158  int __ret = -1;
2159  if (__len <= 10)
2160  {
2161  if (__c >= _CharT2('0') && __c < _CharT2(_CharT2('0') + __len))
2162  __ret = __c - _CharT2('0');
2163  }
2164  else
2165  {
2166  if (__c >= _CharT2('0') && __c <= _CharT2('9'))
2167  __ret = __c - _CharT2('0');
2168  else if (__c >= _CharT2('a') && __c <= _CharT2('f'))
2169  __ret = 10 + (__c - _CharT2('a'));
2170  else if (__c >= _CharT2('A') && __c <= _CharT2('F'))
2171  __ret = 10 + (__c - _CharT2('A'));
2172  }
2173  return __ret;
2174  }
2175 
2176  template<typename _CharT2>
2177  typename __gnu_cxx::__enable_if<!__is_char<_CharT2>::__value,
2178  int>::__type
2179  _M_find(const _CharT2* __zero, size_t __len, _CharT2 __c) const
2180  {
2181  int __ret = -1;
2182  const char_type* __q = char_traits<_CharT2>::find(__zero, __len, __c);
2183  if (__q)
2184  {
2185  __ret = __q - __zero;
2186  if (__ret > 15)
2187  __ret -= 6;
2188  }
2189  return __ret;
2190  }
2191 
2192  //@{
2193  /**
2194  * @brief Numeric parsing.
2195  *
2196  * Parses the input stream into the variable @a v. This function is a
2197  * hook for derived classes to change the value returned. @see get()
2198  * for more details.
2199  *
2200  * @param __beg Start of input stream.
2201  * @param __end End of input stream.
2202  * @param __io Source of locale and flags.
2203  * @param __err Error flags to set.
2204  * @param __v Value to format and insert.
2205  * @return Iterator after reading.
2206  */
2207  virtual iter_type
2208  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, bool&) const;
2209 
2210  virtual iter_type
2211  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2212  ios_base::iostate& __err, long& __v) const
2213  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2214 
2215  virtual iter_type
2216  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2217  ios_base::iostate& __err, unsigned short& __v) const
2218  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2219 
2220  virtual iter_type
2221  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2222  ios_base::iostate& __err, unsigned int& __v) const
2223  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2224 
2225  virtual iter_type
2226  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2227  ios_base::iostate& __err, unsigned long& __v) const
2228  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2229 
2230 #ifdef _GLIBCXX_USE_LONG_LONG
2231  virtual iter_type
2232  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2233  ios_base::iostate& __err, long long& __v) const
2234  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2235 
2236  virtual iter_type
2237  do_get(iter_type __beg, iter_type __end, ios_base& __io,
2238  ios_base::iostate& __err, unsigned long long& __v) const
2239  { return _M_extract_int(__beg, __end, __io, __err, __v); }
2240 #endif
2241 
2242  virtual iter_type
2243  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, float&) const;
2244 
2245  virtual iter_type
2246  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2247  double&) const;
2248 
2249  // XXX GLIBCXX_ABI Deprecated
2250 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2251  virtual iter_type
2252  __do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2253  double&) const;
2254 #else
2255  virtual iter_type
2256  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2257  long double&) const;
2258 #endif
2259 
2260  virtual iter_type
2261  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, void*&) const;
2262 
2263  // XXX GLIBCXX_ABI Deprecated
2264 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2265  virtual iter_type
2266  do_get(iter_type, iter_type, ios_base&, ios_base::iostate&,
2267  long double&) const;
2268 #endif
2269  //@}
2270  };
2271 
2272  template<typename _CharT, typename _InIter>
2274 
2275 
2276  /**
2277  * @brief Primary class template num_put.
2278  * @ingroup locales
2279  *
2280  * This facet encapsulates the code to convert a number to a string. It is
2281  * used by the ostream numeric insertion operators.
2282  *
2283  * The num_put template uses protected virtual functions to provide the
2284  * actual results. The public accessors forward the call to the virtual
2285  * functions. These virtual functions are hooks for developers to
2286  * implement the behavior they require from the num_put facet.
2287  */
2288  template<typename _CharT, typename _OutIter>
2289  class num_put : public locale::facet
2290  {
2291  public:
2292  // Types:
2293  //@{
2294  /// Public typedefs
2295  typedef _CharT char_type;
2296  typedef _OutIter iter_type;
2297  //@}
2298 
2299  /// Numpunct facet id.
2300  static locale::id id;
2301 
2302  /**
2303  * @brief Constructor performs initialization.
2304  *
2305  * This is the constructor provided by the standard.
2306  *
2307  * @param __refs Passed to the base facet class.
2308  */
2309  explicit
2310  num_put(size_t __refs = 0) : facet(__refs) { }
2311 
2312  /**
2313  * @brief Numeric formatting.
2314  *
2315  * Formats the boolean @a v and inserts it into a stream. It does so
2316  * by calling num_put::do_put().
2317  *
2318  * If ios_base::boolalpha is set, writes ctype<CharT>::truename() or
2319  * ctype<CharT>::falsename(). Otherwise formats @a v as an int.
2320  *
2321  * @param __s Stream to write to.
2322  * @param __io Source of locale and flags.
2323  * @param __fill Char_type to use for filling.
2324  * @param __v Value to format and insert.
2325  * @return Iterator after writing.
2326  */
2327  iter_type
2328  put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
2329  { return this->do_put(__s, __io, __fill, __v); }
2330 
2331  //@{
2332  /**
2333  * @brief Numeric formatting.
2334  *
2335  * Formats the integral value @a v and inserts it into a
2336  * stream. It does so by calling num_put::do_put().
2337  *
2338  * Formatting is affected by the flag settings in @a io.
2339  *
2340  * The basic format is affected by the value of io.flags() &
2341  * ios_base::basefield. If equal to ios_base::oct, formats like the
2342  * printf %o specifier. Else if equal to ios_base::hex, formats like
2343  * %x or %X with ios_base::uppercase unset or set respectively.
2344  * Otherwise, formats like %d, %ld, %lld for signed and %u, %lu, %llu
2345  * for unsigned values. Note that if both oct and hex are set, neither
2346  * will take effect.
2347  *
2348  * If ios_base::showpos is set, '+' is output before positive values.
2349  * If ios_base::showbase is set, '0' precedes octal values (except 0)
2350  * and '0[xX]' precedes hex values.
2351  *
2352  * The decimal point character used is numpunct::decimal_point().
2353  * Thousands separators are inserted according to
2354  * numpunct::grouping() and numpunct::thousands_sep().
2355  *
2356  * If io.width() is non-zero, enough @a fill characters are inserted to
2357  * make the result at least that wide. If
2358  * (io.flags() & ios_base::adjustfield) == ios_base::left, result is
2359  * padded at the end. If ios_base::internal, then padding occurs
2360  * immediately after either a '+' or '-' or after '0x' or '0X'.
2361  * Otherwise, padding occurs at the beginning.
2362  *
2363  * @param __s Stream to write to.
2364  * @param __io Source of locale and flags.
2365  * @param __fill Char_type to use for filling.
2366  * @param __v Value to format and insert.
2367  * @return Iterator after writing.
2368  */
2369  iter_type
2370  put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
2371  { return this->do_put(__s, __io, __fill, __v); }
2372 
2373  iter_type
2374  put(iter_type __s, ios_base& __io, char_type __fill,
2375  unsigned long __v) const
2376  { return this->do_put(__s, __io, __fill, __v); }
2377 
2378 #ifdef _GLIBCXX_USE_LONG_LONG
2379  iter_type
2380  put(iter_type __s, ios_base& __io, char_type __fill, long long __v) const
2381  { return this->do_put(__s, __io, __fill, __v); }
2382 
2383  iter_type
2384  put(iter_type __s, ios_base& __io, char_type __fill,
2385  unsigned long long __v) const
2386  { return this->do_put(__s, __io, __fill, __v); }
2387 #endif
2388  //@}
2389 
2390  //@{
2391  /**
2392  * @brief Numeric formatting.
2393  *
2394  * Formats the floating point value @a v and inserts it into a stream.
2395  * It does so by calling num_put::do_put().
2396  *
2397  * Formatting is affected by the flag settings in @a io.
2398  *
2399  * The basic format is affected by the value of io.flags() &
2400  * ios_base::floatfield. If equal to ios_base::fixed, formats like the
2401  * printf %f specifier. Else if equal to ios_base::scientific, formats
2402  * like %e or %E with ios_base::uppercase unset or set respectively.
2403  * Otherwise, formats like %g or %G depending on uppercase. Note that
2404  * if both fixed and scientific are set, the effect will also be like
2405  * %g or %G.
2406  *
2407  * The output precision is given by io.precision(). This precision is
2408  * capped at numeric_limits::digits10 + 2 (different for double and
2409  * long double). The default precision is 6.
2410  *
2411  * If ios_base::showpos is set, '+' is output before positive values.
2412  * If ios_base::showpoint is set, a decimal point will always be
2413  * output.
2414  *
2415  * The decimal point character used is numpunct::decimal_point().
2416  * Thousands separators are inserted according to
2417  * numpunct::grouping() and numpunct::thousands_sep().
2418  *
2419  * If io.width() is non-zero, enough @a fill characters are inserted to
2420  * make the result at least that wide. If
2421  * (io.flags() & ios_base::adjustfield) == ios_base::left, result is
2422  * padded at the end. If ios_base::internal, then padding occurs
2423  * immediately after either a '+' or '-' or after '0x' or '0X'.
2424  * Otherwise, padding occurs at the beginning.
2425  *
2426  * @param __s Stream to write to.
2427  * @param __io Source of locale and flags.
2428  * @param __fill Char_type to use for filling.
2429  * @param __v Value to format and insert.
2430  * @return Iterator after writing.
2431  */
2432  iter_type
2433  put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
2434  { return this->do_put(__s, __io, __fill, __v); }
2435 
2436  iter_type
2437  put(iter_type __s, ios_base& __io, char_type __fill,
2438  long double __v) const
2439  { return this->do_put(__s, __io, __fill, __v); }
2440  //@}
2441 
2442  /**
2443  * @brief Numeric formatting.
2444  *
2445  * Formats the pointer value @a v and inserts it into a stream. It
2446  * does so by calling num_put::do_put().
2447  *
2448  * This function formats @a v as an unsigned long with ios_base::hex
2449  * and ios_base::showbase set.
2450  *
2451  * @param __s Stream to write to.
2452  * @param __io Source of locale and flags.
2453  * @param __fill Char_type to use for filling.
2454  * @param __v Value to format and insert.
2455  * @return Iterator after writing.
2456  */
2457  iter_type
2458  put(iter_type __s, ios_base& __io, char_type __fill,
2459  const void* __v) const
2460  { return this->do_put(__s, __io, __fill, __v); }
2461 
2462  protected:
2463  template<typename _ValueT>
2464  iter_type
2465  _M_insert_float(iter_type, ios_base& __io, char_type __fill,
2466  char __mod, _ValueT __v) const;
2467 
2468  void
2469  _M_group_float(const char* __grouping, size_t __grouping_size,
2470  char_type __sep, const char_type* __p, char_type* __new,
2471  char_type* __cs, int& __len) const;
2472 
2473  template<typename _ValueT>
2474  iter_type
2475  _M_insert_int(iter_type, ios_base& __io, char_type __fill,
2476  _ValueT __v) const;
2477 
2478  void
2479  _M_group_int(const char* __grouping, size_t __grouping_size,
2480  char_type __sep, ios_base& __io, char_type* __new,
2481  char_type* __cs, int& __len) const;
2482 
2483  void
2484  _M_pad(char_type __fill, streamsize __w, ios_base& __io,
2485  char_type* __new, const char_type* __cs, int& __len) const;
2486 
2487  /// Destructor.
2488  virtual
2489  ~num_put() { };
2490 
2491  //@{
2492  /**
2493  * @brief Numeric formatting.
2494  *
2495  * These functions do the work of formatting numeric values and
2496  * inserting them into a stream. This function is a hook for derived
2497  * classes to change the value returned.
2498  *
2499  * @param __s Stream to write to.
2500  * @param __io Source of locale and flags.
2501  * @param __fill Char_type to use for filling.
2502  * @param __v Value to format and insert.
2503  * @return Iterator after writing.
2504  */
2505  virtual iter_type
2506  do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const;
2507 
2508  virtual iter_type
2509  do_put(iter_type __s, ios_base& __io, char_type __fill, long __v) const
2510  { return _M_insert_int(__s, __io, __fill, __v); }
2511 
2512  virtual iter_type
2513  do_put(iter_type __s, ios_base& __io, char_type __fill,
2514  unsigned long __v) const
2515  { return _M_insert_int(__s, __io, __fill, __v); }
2516 
2517 #ifdef _GLIBCXX_USE_LONG_LONG
2518  virtual iter_type
2519  do_put(iter_type __s, ios_base& __io, char_type __fill,
2520  long long __v) const
2521  { return _M_insert_int(__s, __io, __fill, __v); }
2522 
2523  virtual iter_type
2524  do_put(iter_type __s, ios_base& __io, char_type __fill,
2525  unsigned long long __v) const
2526  { return _M_insert_int(__s, __io, __fill, __v); }
2527 #endif
2528 
2529  virtual iter_type
2530  do_put(iter_type, ios_base&, char_type, double) const;
2531 
2532  // XXX GLIBCXX_ABI Deprecated
2533 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2534  virtual iter_type
2535  __do_put(iter_type, ios_base&, char_type, double) const;
2536 #else
2537  virtual iter_type
2538  do_put(iter_type, ios_base&, char_type, long double) const;
2539 #endif
2540 
2541  virtual iter_type
2542  do_put(iter_type, ios_base&, char_type, const void*) const;
2543 
2544  // XXX GLIBCXX_ABI Deprecated
2545 #if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
2546  virtual iter_type
2547  do_put(iter_type, ios_base&, char_type, long double) const;
2548 #endif
2549  //@}
2550  };
2551 
2552  template <typename _CharT, typename _OutIter>
2554 
2555 _GLIBCXX_END_NAMESPACE_LDBL
2556 
2557  // Subclause convenience interfaces, inlines.
2558  // NB: These are inline because, when used in a loop, some compilers
2559  // can hoist the body out of the loop; then it's just as fast as the
2560  // C is*() function.
2561 
2562  /// Convenience interface to ctype.is(ctype_base::space, __c).
2563  template<typename _CharT>
2564  inline bool
2565  isspace(_CharT __c, const locale& __loc)
2566  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::space, __c); }
2567 
2568  /// Convenience interface to ctype.is(ctype_base::print, __c).
2569  template<typename _CharT>
2570  inline bool
2571  isprint(_CharT __c, const locale& __loc)
2572  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::print, __c); }
2573 
2574  /// Convenience interface to ctype.is(ctype_base::cntrl, __c).
2575  template<typename _CharT>
2576  inline bool
2577  iscntrl(_CharT __c, const locale& __loc)
2578  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::cntrl, __c); }
2579 
2580  /// Convenience interface to ctype.is(ctype_base::upper, __c).
2581  template<typename _CharT>
2582  inline bool
2583  isupper(_CharT __c, const locale& __loc)
2584  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::upper, __c); }
2585 
2586  /// Convenience interface to ctype.is(ctype_base::lower, __c).
2587  template<typename _CharT>
2588  inline bool
2589  islower(_CharT __c, const locale& __loc)
2590  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::lower, __c); }
2591 
2592  /// Convenience interface to ctype.is(ctype_base::alpha, __c).
2593  template<typename _CharT>
2594  inline bool
2595  isalpha(_CharT __c, const locale& __loc)
2596  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alpha, __c); }
2597 
2598  /// Convenience interface to ctype.is(ctype_base::digit, __c).
2599  template<typename _CharT>
2600  inline bool
2601  isdigit(_CharT __c, const locale& __loc)
2602  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::digit, __c); }
2603 
2604  /// Convenience interface to ctype.is(ctype_base::punct, __c).
2605  template<typename _CharT>
2606  inline bool
2607  ispunct(_CharT __c, const locale& __loc)
2608  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::punct, __c); }
2609 
2610  /// Convenience interface to ctype.is(ctype_base::xdigit, __c).
2611  template<typename _CharT>
2612  inline bool
2613  isxdigit(_CharT __c, const locale& __loc)
2614  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::xdigit, __c); }
2615 
2616  /// Convenience interface to ctype.is(ctype_base::alnum, __c).
2617  template<typename _CharT>
2618  inline bool
2619  isalnum(_CharT __c, const locale& __loc)
2620  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::alnum, __c); }
2621 
2622  /// Convenience interface to ctype.is(ctype_base::graph, __c).
2623  template<typename _CharT>
2624  inline bool
2625  isgraph(_CharT __c, const locale& __loc)
2626  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::graph, __c); }
2627 
2628 #if __cplusplus >= 201103L
2629  /// Convenience interface to ctype.is(ctype_base::blank, __c).
2630  template<typename _CharT>
2631  inline bool
2632  isblank(_CharT __c, const locale& __loc)
2633  { return use_facet<ctype<_CharT> >(__loc).is(ctype_base::blank, __c); }
2634 #endif
2635 
2636  /// Convenience interface to ctype.toupper(__c).
2637  template<typename _CharT>
2638  inline _CharT
2639  toupper(_CharT __c, const locale& __loc)
2640  { return use_facet<ctype<_CharT> >(__loc).toupper(__c); }
2641 
2642  /// Convenience interface to ctype.tolower(__c).
2643  template<typename _CharT>
2644  inline _CharT
2645  tolower(_CharT __c, const locale& __loc)
2646  { return use_facet<ctype<_CharT> >(__loc).tolower(__c); }
2647 
2648 _GLIBCXX_END_NAMESPACE_VERSION
2649 } // namespace std
2650 
2651 # include <bits/locale_facets.tcc>
2652 
2653 #endif
string grouping() const
Return grouping specification.
virtual ~num_put()
Destructor.
virtual char_type do_thousands_sep() const
Return thousands separator character.
const char_type * toupper(char_type *__lo, const char_type *__hi) const
Convert array to uppercase.
_CharT tolower(_CharT __c, const locale &__loc)
Convenience interface to ctype.tolower(__c).
num_put(size_t __refs=0)
Constructor performs initialization.
const char_type * scan_is(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type matching a mask.
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
char_type tolower(char_type __c) const
Convert to lowercase.
static locale::id id
The facet id for ctype<char>
_Ios_Iostate iostate
This is a bitmask type.
Definition: ios_base.h:398
string_type truename() const
Return string representation of bool true.
numpunct(__c_locale __cloc, size_t __refs=0)
Internal constructor. Not for general use.
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long long &__v) const
Numeric parsing.
static locale::id id
The facet id for ctype<char_type>
virtual string_type do_falsename() const
Return string representation of bool false.
char_type toupper(char_type __c) const
Convert to uppercase.
Localization functionality base class.The facet class is the base class for a localization feature...
virtual ~numpunct()
Destructor.
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, long __v) const
Numeric formatting.
virtual char_type do_widen(char __c) const
Widen char.
virtual char do_narrow(char_type __c, char __dfault __attribute__((__unused__))) const
Narrow char.
ISO C++ entities toplevel namespace is std.
char_type thousands_sep() const
Return thousands separator character.
char char_type
Typedef for the template parameter char.
iter_type put(iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
Common base for ctype facet.
bool isspace(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::space, __c).
static locale::id id
Numpunct facet id.
const char_type * narrow(const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const
Narrow array to char array.
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.
char_type tolower(char_type __c) const
Convert to lowercase.
bool isupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::upper, __c).
bool islower(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::lower, __c).
char narrow(char_type __c, char __dfault) const
Narrow char_type to char.
bool isalpha(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alpha, __c).
bool ispunct(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::punct, __c).
_CharT char_type
Typedef for the template parameter.
static locale::id id
The facet id for ctype<wchar_t>
Primary class template num_get.This facet encapsulates the code to parse and return a number from a s...
const char * widen(const char *__lo, const char *__hi, char_type *__to) const
Widen char array.
_CharT toupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.toupper(__c).
iter_type put(iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.
wchar_t char_type
Typedef for the template parameter wchar_t.
bool isalnum(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alnum, __c).
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
bool isxdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::xdigit, __c).
numpunct(__cache_type *__cache, size_t __refs=0)
Internal constructor. Not for general use.
char_type toupper(char_type __c) const
Convert to uppercase.
iter_type put(iter_type __s, ios_base &__io, char_type __fill, bool __v) const
Numeric formatting.
bool isblank(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::blank, __c).
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.
virtual string do_grouping() const
Return grouping specification.
bool isgraph(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::graph, __c).
bool iscntrl(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::cntrl, __c).
const char_type * tolower(char_type *__lo, const char_type *__hi) const
Convert array to lowercase.
_CharT char_type
Public typedefs.
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long long __v) const
Numeric formatting.
virtual const char * do_widen(const char *__lo, const char *__hi, char_type *__to) const
Widen char array.
num_get(size_t __refs=0)
Constructor performs initialization.
const char_type * toupper(char_type *__lo, const char_type *__hi) const
Convert array to uppercase.
char_type widen(char __c) const
Widen char to char_type.
static locale::id id
Numpunct facet id.
const mask * table() const
Returns a pointer to the mask table provided to the constructor, or the default from classic_table() ...
basic_string< _CharT > string_type
Public typedefs.
class numpunct_byname [22.2.3.2].
string_type falsename() const
Return string representation of bool false.
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
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
Definition: postypes.h:98
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned int &__v) const
Numeric parsing.
_OutIter iter_type
Public typedefs.
bool is(mask __m, char_type __c) const
Test char_type classification.
class ctype_byname [22.2.1.2].
iter_type put(iter_type __s, ios_base &__io, char_type __fill, const void *__v) const
Numeric formatting.
const char * widen(const char *__lo, const char *__hi, char_type *__to) const
Widen array to char_type.
Base class for ctype.
Definition: ctype_base.h:41
bool isdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::digit, __c).
iter_type put(iter_type __s, ios_base &__io, char_type __fill, long double __v) const
Numeric formatting.
const _CharT * c_str() const noexcept
Return const pointer to null-terminated contents.
Container class for localization functionality.The locale class is first a class wrapper for C librar...
const char_type * scan_not(mask __m, const char_type *__lo, const char_type *__hi) const
Find char_type not matching a mask.
Basis for explicit traits specializations.
Definition: char_traits.h:269
Primary class template num_put.This facet encapsulates the code to convert a number to a string...
numpunct(size_t __refs=0)
Numpunct constructor.
char_type decimal_point() const
Return decimal point character.
const char_type * is(const char_type *__lo, const char_type *__hi, mask *__vec) const
Return a mask array.
Primary class template numpunct.This facet stores several pieces of information related to printing a...
_InIter iter_type
Public typedefs.
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, unsigned long __v) const
Numeric formatting.
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, long &__v) const
Numeric parsing.
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned long &__v) const
Numeric parsing.
virtual ~num_get()
Destructor.
iter_type put(iter_type __s, ios_base &__io, char_type __fill, double __v) const
Numeric formatting.
virtual char_type do_decimal_point() const
Return decimal point character.
virtual iter_type do_get(iter_type __beg, iter_type __end, ios_base &__io, ios_base::iostate &__err, unsigned short &__v) const
Numeric parsing.
Facet ID class.The ID class provides facets with an index used to identify them. Every facet class mu...
char narrow(char_type __c, char __dfault) const
Narrow char.
char_type widen(char __c) const
Widen char.
static locale::id id
Numpunct facet id.
virtual iter_type do_put(iter_type __s, ios_base &__io, char_type __fill, unsigned long long __v) const
Numeric formatting.
_CharT char_type
Public typedefs.
const char_type * tolower(char_type *__lo, const char_type *__hi) const
Convert array to lowercase.
_CharT char_type
Public typedefs.
virtual string_type do_truename() const
Return string representation of bool true.
Primary class template ctype facet.This template class defines classification and conversion function...
bool isprint(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::print, __c).
const char_type * narrow(const char_type *__lo, const char_type *__hi, char __dfault, char *__to) const
Narrow char array.