libstdc++: ctype_base.h Source File

libstdc++

ctype_base.h
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1// Locale support -*- C++ -*-
2
3// Copyright (C) 1997-2026 Free Software Foundation, Inc.
4//
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 3, or (at your option)
9// any later version.
10
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.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/ctype_base.h
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{locale}
28 */
29
30//
31// ISO C++ 14882: 22.1 Locales
32//
33
34// Information as gleaned from /usr/include/ctype.h
35
36namespace std _GLIBCXX_VISIBILITY(default)
37{
38_GLIBCXX_BEGIN_NAMESPACE_VERSION
39
40 /// @brief Base class for ctype.
41 struct ctype_base
42 {
43 // Non-standard typedefs.
44 typedef const int* __to_type;
45
46 // NB: Offsets into ctype<char>::_M_table force a particular size
47 // on the mask type. Because of this, we don't use an enum.
48 typedef unsigned short mask;
49 static const mask upper = _ISupper;
50 static const mask lower = _ISlower;
51 static const mask alpha = _ISalpha;
52 static const mask digit = _ISdigit;
53 static const mask xdigit = _ISxdigit;
54 static const mask space = _ISspace;
55 static const mask print = _ISprint;
56 static const mask graph = _ISalpha | _ISdigit | _ISpunct;
57 static const mask cntrl = _IScntrl;
58 static const mask punct = _ISpunct;
59 static const mask alnum = _ISalpha | _ISdigit;
60#if __cplusplus >= 201103L
61 static const mask blank = _ISblank;
62#endif
63 };
64
65_GLIBCXX_END_NAMESPACE_VERSION
66} // namespace
std
ISO C++ entities toplevel namespace is std.
std::ctype_base
Base class for ctype.
Definition ctype_base.h:42