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[/] [altor32/] [trunk/] [gcc-x64/] [or1knd-elf/] [or1knd-elf/] [include/] [c++/] [4.8.0/] [ext/] [pb_ds/] [detail/] [left_child_next_sibling_heap_/] [const_iterator.hpp] - Blame information for rev 35

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1 35 ultra_embe
// -*- C++ -*-
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// Copyright (C) 2005, 2006, 2009, 2010 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 terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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// 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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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// warranty.
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/**
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 * @file left_child_next_sibling_heap_/const_iterator.hpp
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 * Contains an iterator class returned by the table's const find and insert
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 * methods.
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 */
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#ifndef PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_CONST_ITERATOR_HPP
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#define PB_DS_LEFT_CHILD_NEXT_SIBLING_HEAP_CONST_ITERATOR_HPP
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#include <ext/pb_ds/detail/left_child_next_sibling_heap_/point_const_iterator.hpp>
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#include <debug/debug.h>
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namespace __gnu_pbds
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{
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  namespace detail
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  {
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#define PB_DS_CLASS_C_DEC  \
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    left_child_next_sibling_heap_const_iterator_<Node, _Alloc>
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#define PB_DS_BASIC_HEAP_CIT_BASE \
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    left_child_next_sibling_heap_node_point_const_iterator_<Node, _Alloc>
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    /// Const point-type iterator.
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    template<typename Node, typename _Alloc>
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    class left_child_next_sibling_heap_const_iterator_
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    : public PB_DS_BASIC_HEAP_CIT_BASE
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    {
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    private:
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      typedef PB_DS_BASIC_HEAP_CIT_BASE                 base_type;
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      typedef typename base_type::node_pointer          node_pointer;
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    public:
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      /// Category.
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      typedef std::forward_iterator_tag                 iterator_category;
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      /// Difference type.
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      typedef typename _Alloc::difference_type          difference_type;
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      /// Iterator's value type.
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      typedef typename base_type::value_type            value_type;
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      /// Iterator's pointer type.
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      typedef typename base_type::pointer               pointer;
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      /// Iterator's const pointer type.
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      typedef typename base_type::const_pointer         const_pointer;
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      /// Iterator's reference type.
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      typedef typename base_type::reference             reference;
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      /// Iterator's const reference type.
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      typedef typename base_type::const_reference       const_reference;
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      inline
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      left_child_next_sibling_heap_const_iterator_(node_pointer p_nd)
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      : base_type(p_nd)
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      { }
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      /// Default constructor.
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      inline
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      left_child_next_sibling_heap_const_iterator_()
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      { }
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      /// Copy constructor.
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      inline
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      left_child_next_sibling_heap_const_iterator_(const PB_DS_CLASS_C_DEC& other) : base_type(other)
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      { }
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      /// Compares content to a different iterator object.
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      bool
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      operator==(const PB_DS_CLASS_C_DEC& other) const
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      { return (base_type::m_p_nd == other.m_p_nd); }
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      /// Compares content (negatively) to a different iterator object.
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      bool
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      operator!=(const PB_DS_CLASS_C_DEC& other) const
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      { return (base_type::m_p_nd != other.m_p_nd); }
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      PB_DS_CLASS_C_DEC&
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      operator++()
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      {
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        _GLIBCXX_DEBUG_ASSERT(base_type::m_p_nd != 0);
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        inc();
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        return (*this);
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      }
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      PB_DS_CLASS_C_DEC
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      operator++(int)
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      {
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        PB_DS_CLASS_C_DEC ret_it(base_type::m_p_nd);
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        operator++();
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        return (ret_it);
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      }
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    private:
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      void
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      inc()
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      {
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        if (base_type::m_p_nd->m_p_next_sibling != 0)
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          {
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            base_type::m_p_nd = base_type::m_p_nd->m_p_next_sibling;
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            while (base_type::m_p_nd->m_p_l_child != 0)
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              base_type::m_p_nd = base_type::m_p_nd->m_p_l_child;
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            return;
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          }
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        while (true)
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          {
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            node_pointer p_next = base_type::m_p_nd;
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            base_type::m_p_nd = base_type::m_p_nd->m_p_prev_or_parent;
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            if (base_type::m_p_nd == 0
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                || base_type::m_p_nd->m_p_l_child == p_next)
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              return;
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          }
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      }
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    };
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#undef PB_DS_CLASS_C_DEC
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#undef PB_DS_BASIC_HEAP_CIT_BASE
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  } // namespace detail
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} // namespace __gnu_pbds
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#endif

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