/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

#ifndef SHARE_GC_Z_ZLIST_HPP

#define SHARE_GC_Z_ZLIST_HPP

#include "memory/allocation.hpp"

template <typename T> class ZList;

// Element in a doubly linked list

template <typename T>

class ZListNode {

  friend class ZList<T>;

private:

  ZListNode* _next;

  ZListNode* _prev;

public:

};

// Doubly linked list

template <typename T>

class ZList {

private:

  ZListNode<T> _head;

  size_t       _size;

  // Passing by value and assignment is not allowed

  ZList(const ZList<T>& list);

  ZList<T>& operator=(const ZList<T>& list);

public:

};

template <typename T, bool forward>

class ZListIteratorImpl : public StackObj {

private:

  const ZList<T>* const _list;

  T*                    _next;

public:

  ZListIteratorImpl(const ZList<T>* list);

  bool next(T** elem);

};

// Iterator types

#define ZLIST_FORWARD        true

#define ZLIST_REVERSE        false

template <typename T>

class ZListIterator : public ZListIteratorImpl<T, ZLIST_FORWARD> {

public:

};

template <typename T>

class ZListReverseIterator : public ZListIteratorImpl<T, ZLIST_REVERSE> {

public:

};

#endif // SHARE_GC_Z_ZLIST_HPP