1

/* $Id$ */

     2

     5

#ifndef AUTOPTR_HPP

     6

#define AUTOPTR_HPP

     7

     8

/** AutoPtrT - kind of smart pointer that ensures the owned object gets

     9

 *  deleted when its pointer goes out of scope.

    10

 *  It is non-invasive smart pointer (no reference counter).

    11

 *  When copied, the copy takes ownership of underlying object

    12

 *  and original becomes NULL!

    13

 *  Can be used also for polymorphic data types (interfaces).

    14

 */

    15

template <class T>

    16

class AutoPtrT {

    17

public:

    18

	typedef T obj_t;

    19

    20

protected:

    21

	mutable T* m_p; ///< points to the data

    22

    23

public:

    24

	FORCEINLINE AutoPtrT()

    25

	 : m_p(NULL)

    26

	{};

    27

    28

	FORCEINLINE AutoPtrT(const AutoPtrT<T>& src)

    29

	 : m_p(src.m_p)

    30

	{

    31

		if (m_p != NULL) src.m_p = NULL;

    32

	};

    33

    34

	FORCEINLINE AutoPtrT(T *p)

    35

	 : m_p(p)

    36

	{}

    37

    38

	FORCEINLINE ~AutoPtrT()

    39

	{

    40

		if (m_p != NULL) {

    41

			delete m_p;

    42

			m_p = NULL;

    43

		}

    44

	}

    45

    46

	/** give-up ownership and NULLify the raw pointer */

    47

	FORCEINLINE T* Release()

    48

	{

    49

		T* p = m_p;

    50

		m_p = NULL;

    51

		return p;

    52

	}

    53

    54

	/** raw-pointer cast operator (read only) */

    55

	FORCEINLINE operator const T* () const

    56

	{

    57

		return m_p;

    58

	}

    59

    60

	/** raw-pointer cast operator */

    61

	FORCEINLINE operator T* ()

    62

	{

    63

		return m_p;

    64

	}

    65

    66

	/** dereference operator (read only) */

    67

	FORCEINLINE const T* operator -> () const

    68

	{

    69

		assert(m_p != NULL);

    70

		return m_p;

    71

	}

    72

    73

	/** dereference operator (read / write) */

    74

	FORCEINLINE T* operator -> ()

    75

	{

    76

		assert(m_p != NULL);

    77

		return m_p;

    78

	}

    79

    80

	/** assignment operator */

    81

	FORCEINLINE AutoPtrT& operator = (const AutoPtrT& src)

    82

	{

    83

		m_p = src.m_p;

    84

		if (m_p != NULL) src.m_p = NULL;

    85

		return *this;

    86

	}

    87

    88

	/** forwarding 'lower than' operator to the underlaying items */

    89

	FORCEINLINE bool operator < (const AutoPtrT& other) const

    90

	{

    91

		assert(m_p != NULL);

    92

		assert(other.m_p != NULL);

    93

		return (*m_p) < (*other.m_p);

    94

	}

    95

};

    96

    97

#endif /* AUTOPTR_HPP */