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