home *** CD-ROM | disk | FTP | other *** search
- #ifndef __USEFACET_H
- #define __USEFACET_H
- #pragma option push -b -a8 -pc -Vx- -Ve- -w-inl -w-aus -w-sig
- // -*- C++ -*-
- /***************************************************************************
- *
- * usefacet - Declarations for the Standard Library facet access functions
- * and for the convenience functions (isalpha etc.)
- *
- ***************************************************************************
- *
- * Copyright (c) 1994-1999 Rogue Wave Software, Inc. All Rights Reserved.
- *
- * This computer software is owned by Rogue Wave Software, Inc. and is
- * protected by U.S. copyright laws and other laws and by international
- * treaties. This computer software is furnished by Rogue Wave Software,
- * Inc. pursuant to a written license agreement and may be used, copied,
- * transmitted, and stored only in accordance with the terms of such
- * license and with the inclusion of the above copyright notice. This
- * computer software or any other copies thereof may not be provided or
- * otherwise made available to any other person.
- *
- * U.S. Government Restricted Rights. This computer software is provided
- * with Restricted Rights. Use, duplication, or disclosure by the
- * Government is subject to restrictions as set forth in subparagraph (c)
- * (1) (ii) of The Rights in Technical Data and Computer Software clause
- * at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
- * Commercial Computer Software รป Restricted Rights at 48 CFR 52.227-19,
- * as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
- * Flatiron Parkway, Boulder, Colorado 80301 USA.
- *
- **************************************************************************/
-
- #ifndef __STD_USEFACET__
- #define __STD_USEFACET__
-
- #ifndef __STD_RWLOCALE__
- #include <rw/rwlocale>
- #endif
-
- #ifndef _RWSTD_NO_NAMESPACE
- namespace std {
- #endif
-
- // Template use_facet<Facet>(loc) returns a reference to a facet. Its result
- // is guaranteed by locale's value semantics to last at least as long as the
- // locale or any copy of the locale it came from.
-
- #ifndef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
- #define _RWSTD_SELECT_FACET
- #else
- #define _RWSTD_SELECT_FACET ,Facet*
- #endif
-
- template <class Facet>
- _RWSTD_TRICKY_INLINE
- const Facet &use_facet (const locale &loc _RWSTD_SELECT_FACET)
- {
- // Ensure that Facet has a static member named id, and (via cast) that it is
- // of type locale::id, and obtain from it (via size_t conversion operator)
- // the private numeric index associated with type Facet for this run.
- size_t i=(const locale::id&) Facet::id;
-
- // Get pointer to facet from locale.
- const __RWSTD::facet_imp *f=loc.get_facet(i);
-
- // If facet is not explicitly present in locale yet, use private function
- // locale::__make_explicit to construct it or retrieve it from a cache, and
- // install it in the locale. This function can throw bad_cast or other
- // exceptions.
- if (!f)
- f=loc.__make_explicit(Facet::id,Facet::__ok_implicit,Facet::__facet_cat,
- __RWSTD::facet_maker<Facet>::maker_func);
-
- return (const Facet&)*f;
- }
-
- // Function has_facet<Facet>(loc) simply reports whether a locale implements a
- // particular facet. If has_facet<facet>(loc) is false, use_facet<facet>(loc)
- // would throw an exception.
-
- template <class Facet>
- inline bool has_facet (const locale &loc _RWSTD_SELECT_FACET)
- _RWSTD_THROW_SPEC_NULL
- {
- size_t ix = (const locale::id&) Facet::id; // verify is a locale::id.
- return loc.__imp->get_facet(ix) != NULL || Facet::__ok_implicit;
- }
-
- // convenience interfaces: is*(char)
-
- #ifndef _RWSTD_NO_TEMPLATE_ON_RETURN_TYPE
-
- template <class charT> inline bool isspace(charT c, const locale& loc)
- { typedef ctype<charT> idiot; return use_facet<idiot>(loc).is(ctype_base::space, c); }
- template <class charT> inline bool isprint(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::print, c); }
- template <class charT> inline bool iscntrl(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::cntrl, c); }
- template <class charT> inline bool isupper(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::upper, c); }
- template <class charT> inline bool islower(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::lower, c); }
- template <class charT> inline bool isalpha(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::alpha, c); }
- template <class charT> inline bool isdigit(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::digit, c); }
- template <class charT> inline bool ispunct(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::punct, c); }
- template <class charT> inline bool isxdigit(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::xdigit, c); }
- template <class charT> inline bool isalnum(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::alnum, c); }
- template <class charT> inline bool isgraph(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).is(ctype_base::graph, c); }
-
- template <class charT> inline charT toupper(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).toupper(c); }
- template <class charT> inline charT tolower(charT c, const locale& loc)
- { return use_facet<ctype<charT> >(loc).tolower(c); }
-
- #else
-
- template <class charT> inline bool isspace(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::space, c); }
- template <class charT> inline bool isprint(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::print, c); }
- template <class charT> inline bool iscntrl(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::cntrl, c); }
- template <class charT> inline bool isupper(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::upper, c); }
- template <class charT> inline bool islower(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::lower, c); }
- template <class charT> inline bool isalpha(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::alpha, c); }
- template <class charT> inline bool isdigit(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::digit, c); }
- template <class charT> inline bool ispunct(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::punct, c); }
- template <class charT> inline bool isxdigit(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::xdigit, c); }
- template <class charT> inline bool isalnum(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::alnum, c); }
- template <class charT> inline bool isgraph(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).is(ctype_base::graph, c); }
-
- template <class charT> inline charT toupper(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).toupper(c); }
- template <class charT> inline charT tolower(charT c, const locale& loc)
- { return use_facet(loc,(ctype<charT>*)0).tolower(c); }
-
- #endif
-
- #ifndef _RWSTD_NO_NAMESPACE
- } // namespace std
- #endif
-
- #endif // __STD_USEFACET__
- #pragma option pop
- #endif /* __USEFACET_H */
-