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[/] [altor32/] [trunk/] [gcc-x64/] [or1knd-elf/] [or1knd-elf/] [include/] [c++/] [4.8.0/] [debug/] [safe_iterator.tcc] - Blame information for rev 35

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1 35 ultra_embe
// Debugging iterator implementation (out of line) -*- C++ -*-
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// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library.  This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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// .
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/** @file debug/safe_iterator.tcc
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 *  This file is a GNU debug extension to the Standard C++ Library.
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 */
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#ifndef _GLIBCXX_DEBUG_SAFE_ITERATOR_TCC
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#define _GLIBCXX_DEBUG_SAFE_ITERATOR_TCC 1
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namespace __gnu_debug
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{
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  template
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    bool
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    _Safe_iterator<_Iterator, _Sequence>::
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    _M_can_advance(const difference_type& __n) const
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    {
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      typedef typename _Sequence::const_iterator const_debug_iterator;
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      typedef typename const_debug_iterator::iterator_type const_iterator;
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      if (this->_M_singular())
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        return false;
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      if (__n == 0)
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        return true;
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      if (__n < 0)
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        {
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          const_iterator __begin = _M_get_sequence()->_M_base().begin();
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          std::pair __dist =
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            __get_distance(__begin, base());
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          bool __ok =  ((__dist.second == __dp_exact && __dist.first >= -__n)
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                        || (__dist.second != __dp_exact && __dist.first > 0));
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          return __ok;
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        }
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      else
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        {
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          const_iterator __end = _M_get_sequence()->_M_base().end();
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          std::pair __dist =
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            __get_distance(base(), __end);
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          bool __ok = ((__dist.second == __dp_exact && __dist.first >= __n)
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                       || (__dist.second != __dp_exact && __dist.first > 0));
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          return __ok;
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        }
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    }
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  template
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    template
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      bool
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      _Safe_iterator<_Iterator, _Sequence>::
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      _M_valid_range(const _Safe_iterator<_Other, _Sequence>& __rhs) const
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      {
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        if (!_M_can_compare(__rhs))
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          return false;
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        /* Determine if we can order the iterators without the help of
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           the container */
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        std::pair __dist =
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          __get_distance(base(), __rhs.base());
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        switch (__dist.second) {
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        case __dp_equality:
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          if (__dist.first == 0)
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            return true;
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          break;
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        case __dp_sign:
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        case __dp_exact:
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          return __dist.first >= 0;
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        }
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        /* We can only test for equality, but check if one of the
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           iterators is at an extreme. */
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        /* Optim for classic [begin, it) or [it, end) ranges, limit checks
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         * when code is valid.  Note, for the special case of forward_list,
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         * before_begin replaces the role of begin.  */
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        if (_M_is_beginnest() || __rhs._M_is_end())
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          return true;
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        if (_M_is_end() || __rhs._M_is_beginnest())
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          return false;
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        // Assume that this is a valid range; we can't check anything else
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        return true;
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      }
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} // namespace __gnu_debug
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#endif
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