cpp-intrusive-list/intrusive_node.hpp

//
//  intrusive_node.hpp
//  intrusive_list
//
//  Created by Sam Jaffe on 1/7/17.
//

#pragma once

template <typename T> class intrusive_list;

template <typename T>
class intrusive_node {
public:
  typedef T value_type;
  typedef T& reference;
  typedef const T& const_reference;
  typedef T* pointer;
  typedef const T* const_pointer;
private:
  typedef intrusive_node<T>* self;
public:
  intrusive_node() = delete;
  intrusive_node(const intrusive_node&) = delete;
  intrusive_node(intrusive_node&&) = delete;
  intrusive_node& operator=(const intrusive_node&) = delete;
  intrusive_node& operator=(intrusive_node&&) = delete;
  
  intrusive_node(pointer ptr);
  ~intrusive_node();
  
private:
  friend intrusive_list<T>;
  friend intrusive_iterator<intrusive_node<T> >;
  friend const_intrusive_iterator<intrusive_node<T> >;
  
  void unlink( );
  
  pointer ptr_ = nullptr;
  intrusive_list<T>* list_ = nullptr;
  self next_ = nullptr;
  self prev_ = nullptr;
};