localefwd.h
Go to the documentation of this file.
// <locale> Forward declarations -*- C++ -*-
// Copyright (C) 1997-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file bits/localefwd.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{locale}
*/
//
// ISO C++ 14882: 22.1 Locales
//
#ifndef _LOCALE_FWD_H
#define _LOCALE_FWD_H 1
#ifdef _GLIBCXX_SYSHDR
#pragma GCC system_header
#endif
#include <bits/c++config.h>
#include <bits/c++locale.h> // Defines __c_locale, config-specific include
#include <iosfwd> // For ostreambuf_iterator, istreambuf_iterator
#include <cctype>
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
/**
* @defgroup locales Locales
*
* Classes and functions for internationalization and localization.
*/
// 22.1.1 Locale
class locale;
template<typename _Facet>
bool
has_facet(const locale&) throw();
template<typename _Facet>
const _Facet&
use_facet(const locale&);
// 22.1.3 Convenience interfaces
template<typename _CharT>
bool
isspace(_CharT, const locale&);
template<typename _CharT>
bool
isprint(_CharT, const locale&);
template<typename _CharT>
bool
iscntrl(_CharT, const locale&);
template<typename _CharT>
bool
isupper(_CharT, const locale&);
template<typename _CharT>
bool
islower(_CharT, const locale&);
template<typename _CharT>
bool
isalpha(_CharT, const locale&);
template<typename _CharT>
bool
isdigit(_CharT, const locale&);
template<typename _CharT>
bool
ispunct(_CharT, const locale&);
template<typename _CharT>
bool
isxdigit(_CharT, const locale&);
template<typename _CharT>
bool
isalnum(_CharT, const locale&);
template<typename _CharT>
bool
isgraph(_CharT, const locale&);
#if __cplusplus >= 201103L
template<typename _CharT>
bool
isblank(_CharT, const locale&);
#endif
template<typename _CharT>
_CharT
toupper(_CharT, const locale&);
template<typename _CharT>
_CharT
tolower(_CharT, const locale&);
// 22.2.1 and 22.2.1.3 ctype
struct ctype_base;
template<typename _CharT>
class ctype;
template<> class ctype<char>;
#ifdef _GLIBCXX_USE_WCHAR_T
template<> class ctype<wchar_t>;
#endif
template<typename _CharT>
class ctype_byname;
// NB: Specialized for char and wchar_t in locale_facets.h.
class codecvt_base;
template<typename _InternT, typename _ExternT, typename _StateT>
class codecvt;
template<> class codecvt<char, char, mbstate_t>;
#ifdef _GLIBCXX_USE_WCHAR_T
template<> class codecvt<wchar_t, char, mbstate_t>;
#endif
#if __cplusplus >= 201103L
template<> class codecvt<char16_t, char, mbstate_t>;
template<> class codecvt<char32_t, char, mbstate_t>;
#ifdef _GLIBCXX_USE_CHAR8_T
template<> class codecvt<char16_t, char8_t, mbstate_t>;
template<> class codecvt<char32_t, char8_t, mbstate_t>;
#endif
#endif
template<typename _InternT, typename _ExternT, typename _StateT>
class codecvt_byname;
// 22.2.2 and 22.2.3 numeric
_GLIBCXX_BEGIN_NAMESPACE_LDBL
template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
class num_get;
template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
class num_put;
_GLIBCXX_END_NAMESPACE_LDBL
_GLIBCXX_BEGIN_NAMESPACE_CXX11
template<typename _CharT> class numpunct;
template<typename _CharT> class numpunct_byname;
_GLIBCXX_END_NAMESPACE_CXX11
_GLIBCXX_BEGIN_NAMESPACE_CXX11
// 22.2.4 collation
template<typename _CharT>
class collate;
template<typename _CharT>
class collate_byname;
_GLIBCXX_END_NAMESPACE_CXX11
// 22.2.5 date and time
class time_base;
_GLIBCXX_BEGIN_NAMESPACE_CXX11
template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
class time_get;
template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
class time_get_byname;
_GLIBCXX_END_NAMESPACE_CXX11
template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
class time_put;
template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
class time_put_byname;
// 22.2.6 money
class money_base;
_GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11
template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
class money_get;
template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
class money_put;
_GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11
_GLIBCXX_BEGIN_NAMESPACE_CXX11
template<typename _CharT, bool _Intl = false>
class moneypunct;
template<typename _CharT, bool _Intl = false>
class moneypunct_byname;
_GLIBCXX_END_NAMESPACE_CXX11
// 22.2.7 message retrieval
struct messages_base;
_GLIBCXX_BEGIN_NAMESPACE_CXX11
template<typename _CharT>
class messages;
template<typename _CharT>
class messages_byname;
_GLIBCXX_END_NAMESPACE_CXX11
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif
iosfwd
cctype
c++locale.h
c++config.h
std::has_facet
bool has_facet(const locale &__loc) noexcept
Test for the presence of a facet.
Definition locale_classes.tcc:190
std::use_facet
const _Facet & use_facet(const locale &__loc)
Return a facet.
Definition locale_classes.tcc:220
std
ISO C++ entities toplevel namespace is std.
std::isgraph
bool isgraph(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::graph, __c).
Definition locale_facets.h:2675
std::isspace
bool isspace(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::space, __c).
Definition locale_facets.h:2615
std::isxdigit
bool isxdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::xdigit, __c).
Definition locale_facets.h:2663
std::islower
bool islower(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::lower, __c).
Definition locale_facets.h:2639
std::isdigit
bool isdigit(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::digit, __c).
Definition locale_facets.h:2651
std::isblank
bool isblank(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::blank, __c).
Definition locale_facets.h:2682
std::toupper
_CharT toupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.toupper(__c).
Definition locale_facets.h:2689
std::isupper
bool isupper(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::upper, __c).
Definition locale_facets.h:2633
std::isalnum
bool isalnum(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alnum, __c).
Definition locale_facets.h:2669
std::ispunct
bool ispunct(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::punct, __c).
Definition locale_facets.h:2657
std::tolower
_CharT tolower(_CharT __c, const locale &__loc)
Convenience interface to ctype.tolower(__c).
Definition locale_facets.h:2695
std::isprint
bool isprint(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::print, __c).
Definition locale_facets.h:2621
std::isalpha
bool isalpha(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::alpha, __c).
Definition locale_facets.h:2645
std::iscntrl
bool iscntrl(_CharT __c, const locale &__loc)
Convenience interface to ctype.is(ctype_base::cntrl, __c).
Definition locale_facets.h:2627
std::codecvt_base
Empty base class for codecvt facet [22.2.1.5].
Definition codecvt.h:55
std::codecvt
Primary class template codecvt.
Definition codecvt.h:284
std::codecvt_byname
class codecvt_byname [22.2.1.6].
Definition codecvt.h:705
std::locale
Container class for localization functionality.
Definition locale_classes.h:69
std::ctype
Primary class template ctype facet.
Definition locale_facets.h:618
std::ctype_byname
class ctype_byname [22.2.1.2].
Definition locale_facets.h:1489
std::numpunct
Primary class template numpunct.
Definition locale_facets.h:1681
std::numpunct_byname
class numpunct_byname [22.2.3.2].
Definition locale_facets.h:1914
std::num_get
Primary class template num_get.
Definition locale_facets.h:1963
std::num_put
Primary class template num_put.
Definition locale_facets.h:2327
std::time_base
Time format ordering data.
Definition locale_facets_nonio.h:55
std::time_get
Primary class template time_get.
Definition locale_facets_nonio.h:401
std::time_get_byname
class time_get_byname [22.2.5.2].
Definition locale_facets_nonio.h:801
std::time_put
Primary class template time_put.
Definition locale_facets_nonio.h:838
std::time_put_byname
class time_put_byname [22.2.5.4].
Definition locale_facets_nonio.h:934
std::money_base
Money format ordering data.
Definition locale_facets_nonio.h:969
std::moneypunct
Primary class template moneypunct.
Definition locale_facets_nonio.h:1065
std::moneypunct_byname
class moneypunct_byname [22.2.6.4].
Definition locale_facets_nonio.h:1455
std::money_get
Primary class template money_get.
Definition locale_facets_nonio.h:1509
std::money_put
Primary class template money_put.
Definition locale_facets_nonio.h:1670
std::messages_base
Messages facet base class providing catalog typedef.
Definition locale_facets_nonio.h:1827
std::messages
Primary class template messages.
Definition locale_facets_nonio.h:1856
std::messages_byname
class messages_byname [22.2.7.2].
Definition locale_facets_nonio.h:2040
std::ctype_base
Base class for ctype.
Definition ctype_base.h:42