1 // Locale support -*- C++ -*-
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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 2, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
31 // ISO C++ 14882: 22.1 Locales
34 #ifndef _CPP_BITS_LOCCORE_H
35 #define _CPP_BITS_LOCCORE_H 1
37 #pragma GCC system_header
39 #include <bits/c++config.h>
40 #include <bits/c++locale.h> // Defines __c_locale.
41 #include <bits/std_climits.h> // For CHAR_BIT
42 #include <bits/std_string.h> // For string
43 #include <bits/std_cctype.h> // For isspace, etc.
44 #include <bits/functexcept.h>
48 // NB: Don't instantiate required wchar_t facets if no wchar_t support.
49 #ifdef _GLIBCPP_USE_WCHAR_T
50 # define _GLIBCPP_NUM_FACETS 26
52 # define _GLIBCPP_NUM_FACETS 13
55 // _Count_ones: compile-time computation of number of 1-bits in a value N
56 // This takes only 5 (or 6) instantiations, doing recursive descent
58 template<unsigned int _Num, int _Shift = (sizeof(unsigned) * CHAR_BIT)/2,
59 unsigned int _Mask = (~0u >> _Shift) >
62 // It is preferable to use enumerators instead of integral static data
63 // members to avoid emission of superflous variables -- gdr.
64 template<unsigned int _Num, unsigned int _Mask>
65 struct _Count_ones<_Num, 0, _Mask>
73 template<unsigned int _Num, int _Shift, unsigned int _Mask>
78 _M_halfcount = _Count_ones<_Num, _Shift/2,
79 (_Mask^((~_Mask)>>(_Shift/2))) >::_M_count,
80 _M_count = (_M_halfcount&_Mask) + ((_M_halfcount>>_Shift)&_Mask)
85 template<typename _Tp, typename _Alloc>
89 // 22.1.3 Convenience interfaces
90 template<typename _CharT>
92 isspace(_CharT, const locale&);
94 template<typename _CharT>
96 isprint(_CharT, const locale&);
98 template<typename _CharT>
100 iscntrl(_CharT, const locale&);
102 template<typename _CharT>
104 isupper(_CharT, const locale&);
106 template<typename _CharT>
108 islower(_CharT, const locale&);
110 template<typename _CharT>
112 isalpha(_CharT, const locale&);
114 template<typename _CharT>
116 isdigit(_CharT, const locale&);
118 template<typename _CharT>
120 ispunct(_CharT, const locale&);
122 template<typename _CharT>
124 isxdigit(_CharT, const locale&);
126 template<typename _CharT>
128 isalnum(_CharT, const locale&);
130 template<typename _CharT>
132 isgraph(_CharT, const locale&);
134 template<typename _CharT>
136 toupper(_CharT, const locale&);
138 template<typename _CharT>
140 tolower(_CharT, const locale&);
143 // 22.2.1 and 22.2.1.3 ctype
145 template<typename _CharT>
147 template<> class ctype<char>;
148 #ifdef _GLIBCPP_USE_WCHAR_T
149 template<> class ctype<wchar_t>;
151 template<typename _CharT>
153 // NB: Specialized for char and wchar_t in locale_facets.h.
156 template<typename _InternT, typename _ExternT, typename _StateT>
158 template<> class codecvt<char, char, mbstate_t>;
159 #ifdef _GLIBCPP_USE_WCHAR_T
160 template<> class codecvt<wchar_t, char, mbstate_t>;
162 template<typename _InternT, typename _ExternT, typename _StateT>
163 class codecvt_byname;
165 // 22.2.2 and 22.2.3 numeric
166 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
168 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
170 template<typename _CharT> class numpunct;
171 template<typename _CharT> class numpunct_byname;
174 template<typename _CharT>
176 template<typename _CharT> class
179 // 22.2.5 date and time
181 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
183 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
184 class time_get_byname;
185 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
187 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
188 class time_put_byname;
192 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
194 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
196 template<typename _CharT, bool _Intl = false>
198 template<typename _CharT, bool _Intl = false>
199 class moneypunct_byname;
201 // 22.2.7 message retrieval
203 template<typename _CharT>
205 template<typename _CharT>
206 class messages_byname;
208 // 22.1.1 Class locale
213 typedef unsigned int category;
215 // Forward decls and friends:
223 template<typename _Facet>
225 use_facet(const locale&);
227 template<typename _Facet>
229 has_facet(const locale&) throw();
232 // NB: Order must match _S_facet_categories definition in locale.cc
233 static const category none = 0;
234 static const category ctype = 1L << 0;
235 static const category numeric = 1L << 1;
236 static const category collate = 1L << 2;
237 static const category time = 1L << 3;
238 static const category monetary = 1L << 4;
239 static const category messages = 1L << 5;
240 static const category all = (collate | ctype | monetary |
241 numeric | time | messages);
243 // Construct/copy/destroy:
246 locale(const locale& __other) throw();
249 locale(const char* __std_name);
251 locale(const locale& __base, const char* __s, category __cat);
253 locale(const locale& __base, const locale& __add, category __cat);
255 template<typename _Facet>
256 locale(const locale& __other, _Facet* __f);
261 operator=(const locale& __other) throw();
263 template<typename _Facet>
265 combine(const locale& __other);
267 // Locale operations:
272 operator==(const locale& __other) const throw ();
275 operator!=(const locale& __other) const throw ()
276 { return !(this->operator==(__other)); }
278 template<typename _Char, typename _Traits, typename _Alloc>
280 operator()(const basic_string<_Char, _Traits, _Alloc>& __s1,
281 const basic_string<_Char, _Traits, _Alloc>& __s2) const;
283 // Global locale objects:
285 global(const locale&);
291 // The (shared) implementation
294 // The "C" reference locale
295 static _Impl* _S_classic;
297 // Current global reference locale
298 static _Impl* _S_global;
300 static const size_t _S_num_categories = _Count_ones<all>::_M_count;
301 static const size_t _S_num_facets = _GLIBCPP_NUM_FACETS;
304 locale(_Impl*) throw();
308 { if (!_S_classic) classic(); }
311 _S_normalize_category(category);
314 _M_coalesce(const locale& __base, const locale& __add, category __cat);
318 // locale implementation object
323 typedef vector<facet*, allocator<facet*> > __vec_facet;
327 friend class locale::facet;
329 template<typename _Facet>
331 use_facet(const locale&);
333 template<typename _Facet>
335 has_facet(const locale&) throw();
339 size_t _M_references;
340 __vec_facet* _M_facets;
341 string _M_names[_S_num_categories];
342 __c_locale _M_c_locale;
343 static const locale::id* const _S_id_ctype[];
344 static const locale::id* const _S_id_numeric[];
345 static const locale::id* const _S_id_collate[];
346 static const locale::id* const _S_id_time[];
347 static const locale::id* const _S_id_monetary[];
348 static const locale::id* const _S_id_messages[];
349 static const locale::id* const* const _S_facet_categories[];
352 _M_add_reference() throw()
353 { ++_M_references; } // XXX MT
356 _M_remove_reference() throw()
358 if (_M_references-- == 0) // XXX MT
367 _Impl(const _Impl&, size_t);
368 _Impl(string __name, size_t);
375 for (size_t i = 0; i < _S_num_categories - 1; ++i)
376 __ret &= _M_names[i] == _M_names[i + 1];
380 _M_replace_categories(const _Impl*, category);
383 _M_replace_category(const _Impl*, const locale::id* const*);
386 _M_replace_facet(const _Impl*, const locale::id*);
389 _M_install_facet(const locale::id*, facet*);
391 template<typename _Facet>
393 _M_init_facet(_Facet* __facet)
394 { _M_install_facet(&_Facet::id, __facet); }
397 template<typename _Facet>
398 locale::locale(const locale& __other, _Facet* __f)
400 _M_impl = new _Impl(*__other._M_impl, 1);
401 _M_impl->_M_install_facet(&_Facet::id, __f);
402 for (size_t __i = 0; __i < _S_num_categories; ++__i)
403 _M_impl->_M_names[__i] = "*";
406 // 22.1.1.1.2 Class locale::facet
410 friend class locale::_Impl;
414 facet(size_t __refs = 0) throw();
420 _S_create_c_locale(__c_locale& __cloc, const char* __s);
423 _S_destroy_c_locale(__c_locale& __cloc);
426 size_t _M_references;
429 _M_add_reference() throw();
432 _M_remove_reference() throw();
434 facet(const facet&); // not defined
437 operator=(const facet&); // not defined
441 // 22.1.1.1.3 Class locale::id
446 friend class locale::_Impl;
447 template<typename _Facet>
449 use_facet(const locale&);
450 template<typename _Facet>
452 has_facet(const locale&) throw ();
454 // NB: There is no accessor for _M_index because it may be used
455 // before the constructor is run; the effect of calling a member
456 // function (even an inline) would be undefined.
457 mutable size_t _M_index;
459 // Last id number assigned
460 static size_t _S_highwater;
463 operator=(const id&); // not defined
465 id(const id&); // not defined
468 // NB: This class is always a static data member, and thus can be
469 // counted on to be zero-initialized.
470 // XXX id() : _M_index(0) { }
474 template<typename _Facet>
476 use_facet(const locale& __loc);
478 template<typename _Facet>
480 has_facet(const locale& __loc) throw();
483 #endif /* _CPP_BITS_LOCCORE_H */