Subversion Repositories altor32

// Debugging iterator implementation (out of line) -*- C++ -*-

// Copyright (C) 2011 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

// .

/** @file debug/safe_local_iterator.tcc

 *  This file is a GNU debug extension to the Standard C++ Library.

 */

#ifndef _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC

#define _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC 1

namespace __gnu_debug

{

  template

    template

      bool

      _Safe_local_iterator<_Iterator, _Sequence>::

      _M_valid_range(const _Safe_local_iterator<_Other, _Sequence>& __rhs) const

      {

        if (!_M_can_compare(__rhs))

          return false;

        if (_M_bucket != __rhs._M_bucket)

          return false;

        /* Determine if we can order the iterators without the help of

           the container */

        std::pair __dist =

          __get_distance(base(), __rhs.base());

        switch (__dist.second)

        {

        case __dp_equality:

          if (__dist.first == 0)

            return true;

          break;

        case __dp_sign:

        case __dp_exact:

          return __dist.first >= 0;

        }

        /* We can only test for equality, but check if one of the

           iterators is at an extreme. */

        /* Optim for classic [begin, it) or [it, end) ranges, limit checks

         * when code is valid. */

        if (_M_is_begin() || __rhs._M_is_end())

          return true;

        if (_M_is_end() || __rhs._M_is_begin())

          return false;

        // Assume that this is a valid range; we can't check anything else

        return true;

      }

} // namespace __gnu_debug

#endif