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// Locale support -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2007, 2009 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/>.

//

// ISO C++ 14882: 22.1  Locales

//

//  We don't use the C-locale masks defined in mingw/include/ctype.h

//  because those masks do not conform to the requirements of 22.2.1.

//  In particular, a separate 'print' bitmask does not exist (isprint(c)

//  relies on a combination of flags) and the  '_ALPHA' mask is also a

//  combination of simple bitmasks.  Thus, we define libstdc++-specific

//  masks here, based on the generic masks, and the corresponding

//  classic_table in ctype_noninline.h.

namespace std _GLIBCXX_VISIBILITY(default)

{

_GLIBCXX_BEGIN_NAMESPACE_VERSION

  /// @brief  Base class for ctype.

  struct ctype_base

  {

    // Non-standard typedefs.

    typedef const int*          __to_type;

    // NB: Offsets into ctype<char>::_M_table force a particular size

    // on the mask type. Because of this, we don't use an enum.

    typedef unsigned short      mask;

    static const mask upper     = 1 << 0;

    static const mask lower     = 1 << 1;

    static const mask alpha     = 1 << 2;

    static const mask digit     = 1 << 3;

    static const mask xdigit    = 1 << 4;

    static const mask space     = 1 << 5;

    static const mask print     = 1 << 6;

    static const mask graph     = (1 << 2) | (1 << 3) | (1 << 9);  // alnum|punct

    static const mask cntrl     = 1 << 8;

    static const mask punct     = 1 << 9;

    static const mask alnum     = (1 << 2) | (1 << 3);  // alpha|digit

  };

_GLIBCXX_END_NAMESPACE_VERSION

} // namespace