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 #include <bits/c++config.h>
38 #include <bits/c++locale.h> // Defines __c_locale.
39 #include <bits/std_climits.h> // For CHAR_BIT
40 #include <bits/std_string.h> // For string
41 #include <bits/std_cctype.h> // For isspace, etc.
42 #include <bits/functexcept.h>
46 // NB: Don't instantiate required wchar_t facets if no wchar_t support.
47 #ifdef _GLIBCPP_USE_WCHAR_T
48 # define _GLIBCPP_NUM_FACETS 26
50 # define _GLIBCPP_NUM_FACETS 13
53 // _Count_ones: compile-time computation of number of 1-bits in a value N
54 // This takes only 5 (or 6) instantiations, doing recursive descent
56 template<unsigned int _Num, int _Shift = (sizeof(unsigned) * CHAR_BIT)/2,
57 unsigned int _Mask = (~0u >> _Shift) >
60 // It is preferable to use enumerators instead of integral static data
61 // members to avoid emission of superflous variables -- gdr.
62 template<unsigned int _Num, unsigned int _Mask>
63 struct _Count_ones<_Num, 0, _Mask>
71 template<unsigned int _Num, int _Shift, unsigned int _Mask>
76 _M_halfcount = _Count_ones<_Num, _Shift/2,
77 (_Mask^((~_Mask)>>(_Shift/2))) >::_M_count,
78 _M_count = (_M_halfcount&_Mask) + ((_M_halfcount>>_Shift)&_Mask)
83 template<typename _Tp, typename _Alloc>
87 // 22.1.3 Convenience interfaces
88 template<typename _CharT>
90 isspace(_CharT, const locale&);
92 template<typename _CharT>
94 isprint(_CharT, const locale&);
96 template<typename _CharT>
98 iscntrl(_CharT, const locale&);
100 template<typename _CharT>
102 isupper(_CharT, const locale&);
104 template<typename _CharT>
106 islower(_CharT, const locale&);
108 template<typename _CharT>
110 isalpha(_CharT, const locale&);
112 template<typename _CharT>
114 isdigit(_CharT, const locale&);
116 template<typename _CharT>
118 ispunct(_CharT, const locale&);
120 template<typename _CharT>
122 isxdigit(_CharT, const locale&);
124 template<typename _CharT>
126 isalnum(_CharT, const locale&);
128 template<typename _CharT>
130 isgraph(_CharT, const locale&);
132 template<typename _CharT>
134 toupper(_CharT, const locale&);
136 template<typename _CharT>
138 tolower(_CharT, const locale&);
141 // 22.2.1 and 22.2.1.3 ctype
143 template<typename _CharT>
145 template<> class ctype<char>;
146 #ifdef _GLIBCPP_USE_WCHAR_T
147 template<> class ctype<wchar_t>;
149 template<typename _CharT>
151 // NB: Specialized for char and wchar_t in locale_facets.h.
154 template<typename _InternT, typename _ExternT, typename _StateT>
156 template<> class codecvt<char, char, mbstate_t>;
157 #ifdef _GLIBCPP_USE_WCHAR_T
158 template<> class codecvt<wchar_t, char, mbstate_t>;
160 template<typename _InternT, typename _ExternT, typename _StateT>
161 class codecvt_byname;
163 // 22.2.2 and 22.2.3 numeric
164 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
166 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
168 template<typename _CharT> class numpunct;
169 template<typename _CharT> class numpunct_byname;
172 template<typename _CharT>
174 template<typename _CharT> class
177 // 22.2.5 date and time
179 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
181 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
182 class time_get_byname;
183 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
185 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
186 class time_put_byname;
190 template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
192 template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
194 template<typename _CharT, bool _Intl = false>
196 template<typename _CharT, bool _Intl = false>
197 class moneypunct_byname;
199 // 22.2.7 message retrieval
201 template<typename _CharT>
203 template<typename _CharT>
204 class messages_byname;
206 // 22.1.1 Class locale
211 typedef unsigned int category;
213 // Forward decls and friends:
221 template<typename _Facet>
223 use_facet(const locale&);
225 template<typename _Facet>
227 has_facet(const locale&) throw();
230 // NB: Order must match _S_facet_categories definition in locale.cc
231 static const category none = 0;
232 static const category ctype = 1L << 0;
233 static const category numeric = 1L << 1;
234 static const category collate = 1L << 2;
235 static const category time = 1L << 3;
236 static const category monetary = 1L << 4;
237 static const category messages = 1L << 5;
238 static const category all = (collate | ctype | monetary |
239 numeric | time | messages);
241 // Construct/copy/destroy:
244 locale(const locale& __other) throw();
247 locale(const char* __std_name);
249 locale(const locale& __base, const char* __s, category __cat);
251 locale(const locale& __base, const locale& __add, category __cat);
253 template<typename _Facet>
254 locale(const locale& __other, _Facet* __f);
259 operator=(const locale& __other) throw();
261 template<typename _Facet>
263 combine(const locale& __other);
265 // Locale operations:
270 operator==(const locale& __other) const throw ();
273 operator!=(const locale& __other) const throw ()
274 { return !(this->operator==(__other)); }
276 template<typename _Char, typename _Traits, typename _Alloc>
278 operator()(const basic_string<_Char, _Traits, _Alloc>& __s1,
279 const basic_string<_Char, _Traits, _Alloc>& __s2) const;
281 // Global locale objects:
283 global(const locale&);
289 // The (shared) implementation
292 // The "C" reference locale
293 static _Impl* _S_classic;
295 // Current global reference locale
296 static _Impl* _S_global;
298 static const size_t _S_num_categories = _Count_ones<all>::_M_count;
299 static const size_t _S_num_facets = _GLIBCPP_NUM_FACETS;
302 locale(_Impl*) throw();
306 { if (!_S_classic) classic(); }
309 _S_normalize_category(category);
312 _M_coalesce(const locale& __base, const locale& __add, category __cat);
316 // locale implementation object
321 typedef vector<facet*, allocator<facet*> > __vec_facet;
325 friend class locale::facet;
327 template<typename _Facet>
329 use_facet(const locale&);
331 template<typename _Facet>
333 has_facet(const locale&) throw();
337 size_t _M_references;
338 __vec_facet* _M_facets;
339 string _M_names[_S_num_categories];
340 __c_locale _M_c_locale;
341 static const locale::id* const _S_id_ctype[];
342 static const locale::id* const _S_id_numeric[];
343 static const locale::id* const _S_id_collate[];
344 static const locale::id* const _S_id_time[];
345 static const locale::id* const _S_id_monetary[];
346 static const locale::id* const _S_id_messages[];
347 static const locale::id* const* const _S_facet_categories[];
350 _M_add_reference() throw()
351 { ++_M_references; } // XXX MT
354 _M_remove_reference() throw()
356 if (_M_references-- == 0) // XXX MT
365 _Impl(const _Impl&, size_t);
366 _Impl(string __name, size_t);
373 for (size_t i = 0; i < _S_num_categories - 1; ++i)
374 __ret &= _M_names[i] == _M_names[i + 1];
378 _M_replace_categories(const _Impl*, category);
381 _M_replace_category(const _Impl*, const locale::id* const*);
384 _M_replace_facet(const _Impl*, const locale::id*);
387 _M_install_facet(const locale::id*, facet*);
389 template<typename _Facet>
391 _M_init_facet(_Facet* __facet)
392 { _M_install_facet(&_Facet::id, __facet); }
395 template<typename _Facet>
396 locale::locale(const locale& __other, _Facet* __f)
398 _M_impl = new _Impl(*__other._M_impl, 1);
399 _M_impl->_M_install_facet(&_Facet::id, __f);
400 for (int __i = 0; __i < _S_num_categories; ++__i)
401 _M_impl->_M_names[__i] = "*";
404 // 22.1.1.1.2 Class locale::facet
408 friend class locale::_Impl;
412 facet(size_t __refs = 0) throw();
418 _S_create_c_locale(__c_locale& __cloc, const char* __s);
421 _S_destroy_c_locale(__c_locale& __cloc);
424 size_t _M_references;
427 _M_add_reference() throw();
430 _M_remove_reference() throw();
432 facet(const facet&); // not defined
435 operator=(const facet&); // not defined
439 // 22.1.1.1.3 Class locale::id
444 friend class locale::_Impl;
445 template<typename _Facet>
447 use_facet(const locale&);
448 template<typename _Facet>
450 has_facet(const locale&) throw ();
452 // NB: There is no accessor for _M_index because it may be used
453 // before the constructor is run; the effect of calling a member
454 // function (even an inline) would be undefined.
455 mutable size_t _M_index;
457 // Last id number assigned
458 static size_t _S_highwater;
461 operator=(const id&); // not defined
463 id(const id&); // not defined
466 // NB: This class is always a static data member, and thus can be
467 // counted on to be zero-initialized.
468 // XXX id() : _M_index(0) { }
472 template<typename _Facet>
474 use_facet(const locale& __loc);
476 template<typename _Facet>
478 has_facet(const locale& __loc) throw();
481 #endif /* _CPP_BITS_LOCCORE_H */