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

// Copyright (C) 2002 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

//

// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)

// functions go in ctype.cc

// The following definitions are portable, but insanely slow. If one

// cares at all about performance, then specialized ctype

// functionality should be added for the native os in question: see

// the config/os/bits/ctype_*.h files.

  bool

  ctype<char>::

  is(mask __m, char __c) const

  {

    bool __ret;

    switch (__m)

      {

      case space:

        __ret = isspace(__c);

        break;

      case print:

        __ret = isprint(__c);

        break;

      case cntrl:

        __ret = iscntrl(__c);

        break;

      case upper:

        __ret = isupper(__c);

        break;

      case lower:

        __ret = islower(__c);

        break;

      case alpha:

        __ret = isalpha(__c);

        break;

      case digit:

        __ret = isdigit(__c);

        break;

      case punct:

        __ret = ispunct(__c);

        break;

      case xdigit:

        __ret = isxdigit(__c);

        break;

      case alnum:

        __ret = isalnum(__c);

        break;

      case graph:

        __ret = isgraph(__c);

        break;

      default:

        __ret = false;

        break;

      }

    return __ret;

  }

  const char*

  ctype<char>::

  is(const char* __low, const char* __high, mask* __vec) const

  {

    const int __bitmasksize = 11; // Highest bitmask in ctype_base == 10

    for (;__low < __high; ++__vec, ++__low)

      {

        mask __m = 0;

        int __i = 0; // Lowest bitmask in ctype_base == 0

        for (;__i < __bitmasksize; ++__i)

          {

            mask __bit = static_cast<mask>(1 << __i);

            if (this->is(__bit, *__low))

              __m |= __bit;

          }

        *__vec = __m;

      }

    return __high;

  }

  const char*

  ctype<char>::

  scan_is(mask __m, const char* __low, const char* __high) const

  {

    while (__low < __high && !this->is(__m, *__low))

      ++__low;

    return __low;

  }

  const char*

  ctype<char>::

  scan_not(mask __m, const char* __low, const char* __high) const

  {

    while (__low < __high && this->is(__m, *__low) != 0)

      ++__low;

    return __low;

  }