libstdc++-v3/config/os/mingw32/ctype_base.h

   1 // Locale support -*- C++ -*-
   2
   3 // Copyright (C) 1997-2024 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 //
  26 // ISO C++ 14882: 22.1  Locales
  27 //
  28
  29 //  We don't use the C-locale masks defined in mingw/include/ctype.h
  30 //  because those masks do not conform to the requirements of 22.2.1.
  31 //  In particular, a separate 'print' bitmask does not exist (isprint(c)
  32 //  relies on a combination of flags) and the  '_ALPHA' mask is also a
  33 //  combination of simple bitmasks.  Thus, we define libstdc++-specific
  34 //  masks here, based on the generic masks, and the corresponding
  35 //  classic_table in ctype_noninline.h.
  36
  37 namespace std _GLIBCXX_VISIBILITY(default)
  38 {
  39 _GLIBCXX_BEGIN_NAMESPACE_VERSION
  40
  41   /// @brief  Base class for ctype.
  42   struct ctype_base
  43   {
  44     // Non-standard typedefs.
  45     typedef const int*          __to_type;
  46
  47     // NB: Offsets into ctype<char>::_M_table force a particular size
  48     // on the mask type. Because of this, we don't use an enum.
  49     typedef unsigned short      mask;
  50     static const mask upper     = 1 << 0;
  51     static const mask lower     = 1 << 1;
  52     static const mask alpha     = 1 << 2;
  53     static const mask digit     = 1 << 3;
  54     static const mask xdigit    = 1 << 4;
  55     static const mask space     = 1 << 5;
  56     static const mask print     = 1 << 6;
  57     static const mask graph     = (1 << 2) | (1 << 3) | (1 << 9);  // alnum|punct
  58     static const mask cntrl     = 1 << 8;
  59     static const mask punct     = 1 << 9;
  60     static const mask alnum     = (1 << 2) | (1 << 3);  // alpha|digit
  61 #if __cplusplus >= 201103L
  62     static const mask blank     = 1 << 10;
  63 #endif
  64   };
  65
  66 _GLIBCXX_END_NAMESPACE_VERSION
  67 } // namespace