#ifndef __GUT_PVARIABLE_HPP
#define __GUT_PVARIABLE_HPP

#include "variable.hpp"

namespace gut
{

class pvariable {
private:
	variable *m_ptr;
	unsigned long *m_count;

public:
	pvariable(void);
	pvariable(pvariable &rhs);
	pvariable(variable *ptr);
	~pvariable(void);
	
	void set(variable *ptr);
	
	inline const variable *get(void) const
	{
		return m_ptr;
	}

	inline const pvariable operator =(pvariable &rhs)
	{
		if (m_count != NULL) {
			if (*m_count == 0) {
				delete m_count;
				delete m_ptr;
			} else {
				*m_count -= 1;
			}
		}
		m_count = rhs.m_count;
		m_ptr   = rhs.m_ptr;
		
		if (m_count != NULL) {
			*m_count += 1;
		}
		
		return *this;
	}
	
	inline const pvariable operator =(variable *ptr)
	{
		if (m_count != NULL) {
			if (*m_count == 0) {
				delete m_count;
				delete m_ptr;
			} else {
				*m_count -= 1;
			}
		} else {
			m_count = new unsigned long();
		}
		*m_count 	= 0;
		m_ptr   	= ptr;

		return *this;
	}
};

}   // namespace gut

#endif  // __GUT_PVARIABLE_HPP