libstdc++
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00001 // Locale support -*- C++ -*- 00002 00003 // Copyright (C) 1997-2013 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the 00007 // terms of the GNU General Public License as published by the 00008 // Free Software Foundation; either version 3, or (at your option) 00009 // any later version. 00010 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 /** @file bits/locale_classes.h 00026 * This is an internal header file, included by other library headers. 00027 * Do not attempt to use it directly. @headername{locale} 00028 */ 00029 00030 // 00031 // ISO C++ 14882: 22.1 Locales 00032 // 00033 00034 #ifndef _LOCALE_CLASSES_H 00035 #define _LOCALE_CLASSES_H 1 00036 00037 #pragma GCC system_header 00038 00039 #include <bits/localefwd.h> 00040 #include <string> 00041 #include <ext/atomicity.h> 00042 00043 namespace std _GLIBCXX_VISIBILITY(default) 00044 { 00045 _GLIBCXX_BEGIN_NAMESPACE_VERSION 00046 00047 // 22.1.1 Class locale 00048 /** 00049 * @brief Container class for localization functionality. 00050 * @ingroup locales 00051 * 00052 * The locale class is first a class wrapper for C library locales. It is 00053 * also an extensible container for user-defined localization. A locale is 00054 * a collection of facets that implement various localization features such 00055 * as money, time, and number printing. 00056 * 00057 * Constructing C++ locales does not change the C library locale. 00058 * 00059 * This library supports efficient construction and copying of locales 00060 * through a reference counting implementation of the locale class. 00061 */ 00062 class locale 00063 { 00064 public: 00065 // Types: 00066 /// Definition of locale::category. 00067 typedef int category; 00068 00069 // Forward decls and friends: 00070 class facet; 00071 class id; 00072 class _Impl; 00073 00074 friend class facet; 00075 friend class _Impl; 00076 00077 template<typename _Facet> 00078 friend bool 00079 has_facet(const locale&) throw(); 00080 00081 template<typename _Facet> 00082 friend const _Facet& 00083 use_facet(const locale&); 00084 00085 template<typename _Cache> 00086 friend struct __use_cache; 00087 00088 //@{ 00089 /** 00090 * @brief Category values. 00091 * 00092 * The standard category values are none, ctype, numeric, collate, time, 00093 * monetary, and messages. They form a bitmask that supports union and 00094 * intersection. The category all is the union of these values. 00095 * 00096 * NB: Order must match _S_facet_categories definition in locale.cc 00097 */ 00098 static const category none = 0; 00099 static const category ctype = 1L << 0; 00100 static const category numeric = 1L << 1; 00101 static const category collate = 1L << 2; 00102 static const category time = 1L << 3; 00103 static const category monetary = 1L << 4; 00104 static const category messages = 1L << 5; 00105 static const category all = (ctype | numeric | collate | 00106 time | monetary | messages); 00107 //@} 00108 00109 // Construct/copy/destroy: 00110 00111 /** 00112 * @brief Default constructor. 00113 * 00114 * Constructs a copy of the global locale. If no locale has been 00115 * explicitly set, this is the C locale. 00116 */ 00117 locale() throw(); 00118 00119 /** 00120 * @brief Copy constructor. 00121 * 00122 * Constructs a copy of @a other. 00123 * 00124 * @param __other The locale to copy. 00125 */ 00126 locale(const locale& __other) throw(); 00127 00128 /** 00129 * @brief Named locale constructor. 00130 * 00131 * Constructs a copy of the named C library locale. 00132 * 00133 * @param __s Name of the locale to construct. 00134 * @throw std::runtime_error if __s is null or an undefined locale. 00135 */ 00136 explicit 00137 locale(const char* __s); 00138 00139 /** 00140 * @brief Construct locale with facets from another locale. 00141 * 00142 * Constructs a copy of the locale @a base. The facets specified by @a 00143 * cat are replaced with those from the locale named by @a s. If base is 00144 * named, this locale instance will also be named. 00145 * 00146 * @param __base The locale to copy. 00147 * @param __s Name of the locale to use facets from. 00148 * @param __cat Set of categories defining the facets to use from __s. 00149 * @throw std::runtime_error if __s is null or an undefined locale. 00150 */ 00151 locale(const locale& __base, const char* __s, category __cat); 00152 00153 /** 00154 * @brief Construct locale with facets from another locale. 00155 * 00156 * Constructs a copy of the locale @a base. The facets specified by @a 00157 * cat are replaced with those from the locale @a add. If @a base and @a 00158 * add are named, this locale instance will also be named. 00159 * 00160 * @param __base The locale to copy. 00161 * @param __add The locale to use facets from. 00162 * @param __cat Set of categories defining the facets to use from add. 00163 */ 00164 locale(const locale& __base, const locale& __add, category __cat); 00165 00166 /** 00167 * @brief Construct locale with another facet. 00168 * 00169 * Constructs a copy of the locale @a __other. The facet @a __f 00170 * is added to @a __other, replacing an existing facet of type 00171 * Facet if there is one. If @a __f is null, this locale is a 00172 * copy of @a __other. 00173 * 00174 * @param __other The locale to copy. 00175 * @param __f The facet to add in. 00176 */ 00177 template<typename _Facet> 00178 locale(const locale& __other, _Facet* __f); 00179 00180 /// Locale destructor. 00181 ~locale() throw(); 00182 00183 /** 00184 * @brief Assignment operator. 00185 * 00186 * Set this locale to be a copy of @a other. 00187 * 00188 * @param __other The locale to copy. 00189 * @return A reference to this locale. 00190 */ 00191 const locale& 00192 operator=(const locale& __other) throw(); 00193 00194 /** 00195 * @brief Construct locale with another facet. 00196 * 00197 * Constructs and returns a new copy of this locale. Adds or replaces an 00198 * existing facet of type Facet from the locale @a other into the new 00199 * locale. 00200 * 00201 * @tparam _Facet The facet type to copy from other 00202 * @param __other The locale to copy from. 00203 * @return Newly constructed locale. 00204 * @throw std::runtime_error if __other has no facet of type _Facet. 00205 */ 00206 template<typename _Facet> 00207 locale 00208 combine(const locale& __other) const; 00209 00210 // Locale operations: 00211 /** 00212 * @brief Return locale name. 00213 * @return Locale name or "*" if unnamed. 00214 */ 00215 string 00216 name() const; 00217 00218 /** 00219 * @brief Locale equality. 00220 * 00221 * @param __other The locale to compare against. 00222 * @return True if other and this refer to the same locale instance, are 00223 * copies, or have the same name. False otherwise. 00224 */ 00225 bool 00226 operator==(const locale& __other) const throw(); 00227 00228 /** 00229 * @brief Locale inequality. 00230 * 00231 * @param __other The locale to compare against. 00232 * @return ! (*this == __other) 00233 */ 00234 bool 00235 operator!=(const locale& __other) const throw() 00236 { return !(this->operator==(__other)); } 00237 00238 /** 00239 * @brief Compare two strings according to collate. 00240 * 00241 * Template operator to compare two strings using the compare function of 00242 * the collate facet in this locale. One use is to provide the locale to 00243 * the sort function. For example, a vector v of strings could be sorted 00244 * according to locale loc by doing: 00245 * @code 00246 * std::sort(v.begin(), v.end(), loc); 00247 * @endcode 00248 * 00249 * @param __s1 First string to compare. 00250 * @param __s2 Second string to compare. 00251 * @return True if collate<_Char> facet compares __s1 < __s2, else false. 00252 */ 00253 template<typename _Char, typename _Traits, typename _Alloc> 00254 bool 00255 operator()(const basic_string<_Char, _Traits, _Alloc>& __s1, 00256 const basic_string<_Char, _Traits, _Alloc>& __s2) const; 00257 00258 // Global locale objects: 00259 /** 00260 * @brief Set global locale 00261 * 00262 * This function sets the global locale to the argument and returns a 00263 * copy of the previous global locale. If the argument has a name, it 00264 * will also call std::setlocale(LC_ALL, loc.name()). 00265 * 00266 * @param __loc The new locale to make global. 00267 * @return Copy of the old global locale. 00268 */ 00269 static locale 00270 global(const locale& __loc); 00271 00272 /** 00273 * @brief Return reference to the C locale. 00274 */ 00275 static const locale& 00276 classic(); 00277 00278 private: 00279 // The (shared) implementation 00280 _Impl* _M_impl; 00281 00282 // The "C" reference locale 00283 static _Impl* _S_classic; 00284 00285 // Current global locale 00286 static _Impl* _S_global; 00287 00288 // Names of underlying locale categories. 00289 // NB: locale::global() has to know how to modify all the 00290 // underlying categories, not just the ones required by the C++ 00291 // standard. 00292 static const char* const* const _S_categories; 00293 00294 // Number of standard categories. For C++, these categories are 00295 // collate, ctype, monetary, numeric, time, and messages. These 00296 // directly correspond to ISO C99 macros LC_COLLATE, LC_CTYPE, 00297 // LC_MONETARY, LC_NUMERIC, and LC_TIME. In addition, POSIX (IEEE 00298 // 1003.1-2001) specifies LC_MESSAGES. 00299 // In addition to the standard categories, the underlying 00300 // operating system is allowed to define extra LC_* 00301 // macros. For GNU systems, the following are also valid: 00302 // LC_PAPER, LC_NAME, LC_ADDRESS, LC_TELEPHONE, LC_MEASUREMENT, 00303 // and LC_IDENTIFICATION. 00304 enum { _S_categories_size = 6 + _GLIBCXX_NUM_CATEGORIES }; 00305 00306 #ifdef __GTHREADS 00307 static __gthread_once_t _S_once; 00308 #endif 00309 00310 explicit 00311 locale(_Impl*) throw(); 00312 00313 static void 00314 _S_initialize(); 00315 00316 static void 00317 _S_initialize_once() throw(); 00318 00319 static category 00320 _S_normalize_category(category); 00321 00322 void 00323 _M_coalesce(const locale& __base, const locale& __add, category __cat); 00324 }; 00325 00326 00327 // 22.1.1.1.2 Class locale::facet 00328 /** 00329 * @brief Localization functionality base class. 00330 * @ingroup locales 00331 * 00332 * The facet class is the base class for a localization feature, such as 00333 * money, time, and number printing. It provides common support for facets 00334 * and reference management. 00335 * 00336 * Facets may not be copied or assigned. 00337 */ 00338 class locale::facet 00339 { 00340 private: 00341 friend class locale; 00342 friend class locale::_Impl; 00343 00344 mutable _Atomic_word _M_refcount; 00345 00346 // Contains data from the underlying "C" library for the classic locale. 00347 static __c_locale _S_c_locale; 00348 00349 // String literal for the name of the classic locale. 00350 static const char _S_c_name[2]; 00351 00352 #ifdef __GTHREADS 00353 static __gthread_once_t _S_once; 00354 #endif 00355 00356 static void 00357 _S_initialize_once(); 00358 00359 protected: 00360 /** 00361 * @brief Facet constructor. 00362 * 00363 * This is the constructor provided by the standard. If refs is 0, the 00364 * facet is destroyed when the last referencing locale is destroyed. 00365 * Otherwise the facet will never be destroyed. 00366 * 00367 * @param __refs The initial value for reference count. 00368 */ 00369 explicit 00370 facet(size_t __refs = 0) throw() : _M_refcount(__refs ? 1 : 0) 00371 { } 00372 00373 /// Facet destructor. 00374 virtual 00375 ~facet(); 00376 00377 static void 00378 _S_create_c_locale(__c_locale& __cloc, const char* __s, 00379 __c_locale __old = 0); 00380 00381 static __c_locale 00382 _S_clone_c_locale(__c_locale& __cloc) throw(); 00383 00384 static void 00385 _S_destroy_c_locale(__c_locale& __cloc); 00386 00387 static __c_locale 00388 _S_lc_ctype_c_locale(__c_locale __cloc, const char* __s); 00389 00390 // Returns data from the underlying "C" library data for the 00391 // classic locale. 00392 static __c_locale 00393 _S_get_c_locale(); 00394 00395 _GLIBCXX_CONST static const char* 00396 _S_get_c_name() throw(); 00397 00398 private: 00399 void 00400 _M_add_reference() const throw() 00401 { __gnu_cxx::__atomic_add_dispatch(&_M_refcount, 1); } 00402 00403 void 00404 _M_remove_reference() const throw() 00405 { 00406 // Be race-detector-friendly. For more info see bits/c++config. 00407 _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&_M_refcount); 00408 if (__gnu_cxx::__exchange_and_add_dispatch(&_M_refcount, -1) == 1) 00409 { 00410 _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&_M_refcount); 00411 __try 00412 { delete this; } 00413 __catch(...) 00414 { } 00415 } 00416 } 00417 00418 facet(const facet&); // Not defined. 00419 00420 facet& 00421 operator=(const facet&); // Not defined. 00422 }; 00423 00424 00425 // 22.1.1.1.3 Class locale::id 00426 /** 00427 * @brief Facet ID class. 00428 * @ingroup locales 00429 * 00430 * The ID class provides facets with an index used to identify them. 00431 * Every facet class must define a public static member locale::id, or be 00432 * derived from a facet that provides this member, otherwise the facet 00433 * cannot be used in a locale. The locale::id ensures that each class 00434 * type gets a unique identifier. 00435 */ 00436 class locale::id 00437 { 00438 private: 00439 friend class locale; 00440 friend class locale::_Impl; 00441 00442 template<typename _Facet> 00443 friend const _Facet& 00444 use_facet(const locale&); 00445 00446 template<typename _Facet> 00447 friend bool 00448 has_facet(const locale&) throw(); 00449 00450 // NB: There is no accessor for _M_index because it may be used 00451 // before the constructor is run; the effect of calling a member 00452 // function (even an inline) would be undefined. 00453 mutable size_t _M_index; 00454 00455 // Last id number assigned. 00456 static _Atomic_word _S_refcount; 00457 00458 void 00459 operator=(const id&); // Not defined. 00460 00461 id(const id&); // Not defined. 00462 00463 public: 00464 // NB: This class is always a static data member, and thus can be 00465 // counted on to be zero-initialized. 00466 /// Constructor. 00467 id() { } 00468 00469 size_t 00470 _M_id() const throw(); 00471 }; 00472 00473 00474 // Implementation object for locale. 00475 class locale::_Impl 00476 { 00477 public: 00478 // Friends. 00479 friend class locale; 00480 friend class locale::facet; 00481 00482 template<typename _Facet> 00483 friend bool 00484 has_facet(const locale&) throw(); 00485 00486 template<typename _Facet> 00487 friend const _Facet& 00488 use_facet(const locale&); 00489 00490 template<typename _Cache> 00491 friend struct __use_cache; 00492 00493 private: 00494 // Data Members. 00495 _Atomic_word _M_refcount; 00496 const facet** _M_facets; 00497 size_t _M_facets_size; 00498 const facet** _M_caches; 00499 char** _M_names; 00500 static const locale::id* const _S_id_ctype[]; 00501 static const locale::id* const _S_id_numeric[]; 00502 static const locale::id* const _S_id_collate[]; 00503 static const locale::id* const _S_id_time[]; 00504 static const locale::id* const _S_id_monetary[]; 00505 static const locale::id* const _S_id_messages[]; 00506 static const locale::id* const* const _S_facet_categories[]; 00507 00508 void 00509 _M_add_reference() throw() 00510 { __gnu_cxx::__atomic_add_dispatch(&_M_refcount, 1); } 00511 00512 void 00513 _M_remove_reference() throw() 00514 { 00515 // Be race-detector-friendly. For more info see bits/c++config. 00516 _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&_M_refcount); 00517 if (__gnu_cxx::__exchange_and_add_dispatch(&_M_refcount, -1) == 1) 00518 { 00519 _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&_M_refcount); 00520 __try 00521 { delete this; } 00522 __catch(...) 00523 { } 00524 } 00525 } 00526 00527 _Impl(const _Impl&, size_t); 00528 _Impl(const char*, size_t); 00529 _Impl(size_t) throw(); 00530 00531 ~_Impl() throw(); 00532 00533 _Impl(const _Impl&); // Not defined. 00534 00535 void 00536 operator=(const _Impl&); // Not defined. 00537 00538 bool 00539 _M_check_same_name() 00540 { 00541 bool __ret = true; 00542 if (_M_names[1]) 00543 // We must actually compare all the _M_names: can be all equal! 00544 for (size_t __i = 0; __ret && __i < _S_categories_size - 1; ++__i) 00545 __ret = __builtin_strcmp(_M_names[__i], _M_names[__i + 1]) == 0; 00546 return __ret; 00547 } 00548 00549 void 00550 _M_replace_categories(const _Impl*, category); 00551 00552 void 00553 _M_replace_category(const _Impl*, const locale::id* const*); 00554 00555 void 00556 _M_replace_facet(const _Impl*, const locale::id*); 00557 00558 void 00559 _M_install_facet(const locale::id*, const facet*); 00560 00561 template<typename _Facet> 00562 void 00563 _M_init_facet(_Facet* __facet) 00564 { _M_install_facet(&_Facet::id, __facet); } 00565 00566 void 00567 _M_install_cache(const facet*, size_t); 00568 }; 00569 00570 00571 /** 00572 * @brief Facet for localized string comparison. 00573 * 00574 * This facet encapsulates the code to compare strings in a localized 00575 * manner. 00576 * 00577 * The collate template uses protected virtual functions to provide 00578 * the actual results. The public accessors forward the call to 00579 * the virtual functions. These virtual functions are hooks for 00580 * developers to implement the behavior they require from the 00581 * collate facet. 00582 */ 00583 template<typename _CharT> 00584 class collate : public locale::facet 00585 { 00586 public: 00587 // Types: 00588 //@{ 00589 /// Public typedefs 00590 typedef _CharT char_type; 00591 typedef basic_string<_CharT> string_type; 00592 //@} 00593 00594 protected: 00595 // Underlying "C" library locale information saved from 00596 // initialization, needed by collate_byname as well. 00597 __c_locale _M_c_locale_collate; 00598 00599 public: 00600 /// Numpunct facet id. 00601 static locale::id id; 00602 00603 /** 00604 * @brief Constructor performs initialization. 00605 * 00606 * This is the constructor provided by the standard. 00607 * 00608 * @param __refs Passed to the base facet class. 00609 */ 00610 explicit 00611 collate(size_t __refs = 0) 00612 : facet(__refs), _M_c_locale_collate(_S_get_c_locale()) 00613 { } 00614 00615 /** 00616 * @brief Internal constructor. Not for general use. 00617 * 00618 * This is a constructor for use by the library itself to set up new 00619 * locales. 00620 * 00621 * @param __cloc The C locale. 00622 * @param __refs Passed to the base facet class. 00623 */ 00624 explicit 00625 collate(__c_locale __cloc, size_t __refs = 0) 00626 : facet(__refs), _M_c_locale_collate(_S_clone_c_locale(__cloc)) 00627 { } 00628 00629 /** 00630 * @brief Compare two strings. 00631 * 00632 * This function compares two strings and returns the result by calling 00633 * collate::do_compare(). 00634 * 00635 * @param __lo1 Start of string 1. 00636 * @param __hi1 End of string 1. 00637 * @param __lo2 Start of string 2. 00638 * @param __hi2 End of string 2. 00639 * @return 1 if string1 > string2, -1 if string1 < string2, else 0. 00640 */ 00641 int 00642 compare(const _CharT* __lo1, const _CharT* __hi1, 00643 const _CharT* __lo2, const _CharT* __hi2) const 00644 { return this->do_compare(__lo1, __hi1, __lo2, __hi2); } 00645 00646 /** 00647 * @brief Transform string to comparable form. 00648 * 00649 * This function is a wrapper for strxfrm functionality. It takes the 00650 * input string and returns a modified string that can be directly 00651 * compared to other transformed strings. In the C locale, this 00652 * function just returns a copy of the input string. In some other 00653 * locales, it may replace two chars with one, change a char for 00654 * another, etc. It does so by returning collate::do_transform(). 00655 * 00656 * @param __lo Start of string. 00657 * @param __hi End of string. 00658 * @return Transformed string_type. 00659 */ 00660 string_type 00661 transform(const _CharT* __lo, const _CharT* __hi) const 00662 { return this->do_transform(__lo, __hi); } 00663 00664 /** 00665 * @brief Return hash of a string. 00666 * 00667 * This function computes and returns a hash on the input string. It 00668 * does so by returning collate::do_hash(). 00669 * 00670 * @param __lo Start of string. 00671 * @param __hi End of string. 00672 * @return Hash value. 00673 */ 00674 long 00675 hash(const _CharT* __lo, const _CharT* __hi) const 00676 { return this->do_hash(__lo, __hi); } 00677 00678 // Used to abstract out _CharT bits in virtual member functions, below. 00679 int 00680 _M_compare(const _CharT*, const _CharT*) const throw(); 00681 00682 size_t 00683 _M_transform(_CharT*, const _CharT*, size_t) const throw(); 00684 00685 protected: 00686 /// Destructor. 00687 virtual 00688 ~collate() 00689 { _S_destroy_c_locale(_M_c_locale_collate); } 00690 00691 /** 00692 * @brief Compare two strings. 00693 * 00694 * This function is a hook for derived classes to change the value 00695 * returned. @see compare(). 00696 * 00697 * @param __lo1 Start of string 1. 00698 * @param __hi1 End of string 1. 00699 * @param __lo2 Start of string 2. 00700 * @param __hi2 End of string 2. 00701 * @return 1 if string1 > string2, -1 if string1 < string2, else 0. 00702 */ 00703 virtual int 00704 do_compare(const _CharT* __lo1, const _CharT* __hi1, 00705 const _CharT* __lo2, const _CharT* __hi2) const; 00706 00707 /** 00708 * @brief Transform string to comparable form. 00709 * 00710 * This function is a hook for derived classes to change the value 00711 * returned. 00712 * 00713 * @param __lo Start. 00714 * @param __hi End. 00715 * @return transformed string. 00716 */ 00717 virtual string_type 00718 do_transform(const _CharT* __lo, const _CharT* __hi) const; 00719 00720 /** 00721 * @brief Return hash of a string. 00722 * 00723 * This function computes and returns a hash on the input string. This 00724 * function is a hook for derived classes to change the value returned. 00725 * 00726 * @param __lo Start of string. 00727 * @param __hi End of string. 00728 * @return Hash value. 00729 */ 00730 virtual long 00731 do_hash(const _CharT* __lo, const _CharT* __hi) const; 00732 }; 00733 00734 template<typename _CharT> 00735 locale::id collate<_CharT>::id; 00736 00737 // Specializations. 00738 template<> 00739 int 00740 collate<char>::_M_compare(const char*, const char*) const throw(); 00741 00742 template<> 00743 size_t 00744 collate<char>::_M_transform(char*, const char*, size_t) const throw(); 00745 00746 #ifdef _GLIBCXX_USE_WCHAR_T 00747 template<> 00748 int 00749 collate<wchar_t>::_M_compare(const wchar_t*, const wchar_t*) const throw(); 00750 00751 template<> 00752 size_t 00753 collate<wchar_t>::_M_transform(wchar_t*, const wchar_t*, size_t) const throw(); 00754 #endif 00755 00756 /// class collate_byname [22.2.4.2]. 00757 template<typename _CharT> 00758 class collate_byname : public collate<_CharT> 00759 { 00760 public: 00761 //@{ 00762 /// Public typedefs 00763 typedef _CharT char_type; 00764 typedef basic_string<_CharT> string_type; 00765 //@} 00766 00767 explicit 00768 collate_byname(const char* __s, size_t __refs = 0) 00769 : collate<_CharT>(__refs) 00770 { 00771 if (__builtin_strcmp(__s, "C") != 0 00772 && __builtin_strcmp(__s, "POSIX") != 0) 00773 { 00774 this->_S_destroy_c_locale(this->_M_c_locale_collate); 00775 this->_S_create_c_locale(this->_M_c_locale_collate, __s); 00776 } 00777 } 00778 00779 protected: 00780 virtual 00781 ~collate_byname() { } 00782 }; 00783 00784 _GLIBCXX_END_NAMESPACE_VERSION 00785 } // namespace 00786 00787 # include <bits/locale_classes.tcc> 00788 00789 #endif