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

// Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004

// 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 2, 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.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

//

// ISO C++ 14882: 22.1  Locales

//

/** @file ctype_base.h

 *  This is an internal header file, included by other library headers.

 *  You should not attempt to use it directly.

 */

// Information as gleaned from /usr/include/ctype.h

  /// @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     = _ISupper;

    static const mask lower     = _ISlower;

    static const mask alpha     = _ISalpha;

    static const mask digit     = _ISdigit;

    static const mask xdigit    = _ISxdigit;

    static const mask space     = _ISspace;

    static const mask print     = _ISprint;

    static const mask graph     = _ISalpha | _ISdigit | _ISpunct;

    static const mask cntrl     = _IScntrl;

    static const mask punct     = _ISpunct;

    static const mask alnum     = _ISalpha | _ISdigit;

  };