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

// Copyright (C) 2000 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.
  
/** @file ctype_inline.h
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */

//
// ISO C++ 14882: 22.1  Locales
//

// ctype bits to be inlined go here. Non-inlinable (ie virtual do_*)
// functions go in ctype.cc
  
_GLIBCXX_BEGIN_NAMESPACE(std)

  bool
  ctype<char>::
  is(mask __m, char __c) const 
  { return __OBJ_DATA(__lc_ctype)->mask[__c] & __m; }

  const char*
  ctype<char>::
  is(const char* __low, const char* __high, mask* __vec) const 
  {
    while (__low < __high)
      *__vec++ = __OBJ_DATA(__lc_ctype)->mask[*__low++];
    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;
  }

_GLIBCXX_END_NAMESPACE
