iterator_ptr.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef OPERATIONAL_ITERATOR_ITERATOR_PTR_H_
#define OPERATIONAL_ITERATOR_ITERATOR_PTR_H_

#include "iterator_interface.h"

namespace operational
{
namespace iterator
{
template<class Item>
class IteratorPtr
{
    public:
    explicit IteratorPtr(IteratorInterface<Item>* i);
    ~IteratorPtr();

    IteratorInterface<Item> *operator->();
    IteratorInterface<Item> &operator*();

    private:
    IteratorPtr(const IteratorPtr&);
    IteratorPtr &operator=(const IteratorPtr&);

    IteratorInterface<Item>* i_;
};

template<class Item>
IteratorPtr<Item>::IteratorPtr(IteratorInterface<Item>* i) : i_(i) { }

template<class Item>
IteratorPtr<Item>::~IteratorPtr()
{
    delete i_;
}

template<class Item>
IteratorInterface<Item> *IteratorPtr<Item>::operator->()
{
    return i_;
}

template<class Item>
IteratorInterface<Item> &IteratorPtr<Item>::operator*()
{
    return *i_;
}

template<class Item>
IteratorPtr<Item>::IteratorPtr(const IteratorPtr&) { }

template<class Item>
IteratorPtr<Item> &IteratorPtr<Item>::operator=(const IteratorPtr&)
{
    return {};
}
}
}

#endif