Ref ()

Create a reference to a null object. Ref (T *a)

Create a reference to the object a. Ref (const Ref< T > &a)

Create a reference to the object referred to by a. template<class A> Ref (const Ref< A > &a)

Create a reference to the object referred to by a. ~Ref ()

Delete this reference to the object. T * operator-> () const

Returns the reference counted object. T * pointer () const

Returns a pointer the reference counted object. RefCount * parentpointer () const

Implements the parentpointer pure virtual in the base class. operator T * () const

T & operator * () const

Returns a C++ reference to the reference counted object. int null () const

Return 1 if this is a reference to a null object. int nonnull () const

Return !null(). template<class A> int operator== (const Ref< A > &a) const

A variety of ordering and equivalence operators are provided using the Identity class. template<class A> int operator>= (const Ref< A > &a) const

template<class A> int operator<= (const Ref< A > &a) const

template<class A> int operator> (const Ref< A > &a) const

template<class A> int operator< (const Ref< A > &a) const

template<class A> int operator!= (const Ref< A > &a) const

int compare (const Ref< T > &a) const

Compare two objects returning -1, 0, or 1. void clear ()

Refer to the null object. Ref< T > & operator= (const Ref< T > &c)

Assignment to c. template<class A> Ref< T > & operator= (const Ref< A > &c)

Assignment to c. Ref< T > & operator<< (const RefBase &a)

Assignment to the object that a references using dynamic_cast. Ref< T > & operator<< (RefCount *a)

Assigns to the given base class pointer using dynamic_cast. Ref< T > & operator= (T *cr)

Assignment to cr. void assign_pointer (T *cr)

Assignment to cr. void check_pointer () const

Check the validity of the pointer. void ref_info (std::ostream &os) const

Print information about the reference to os. void warn (const char *s) const

Print a warning concerning the reference.

A template class that maintains references counts.

Several of these operations can cause a reference to an object to be replaced by a reference to a different object. If a reference to a nonnull object is eliminated, the object's reference count is decremented and the object is deleted if the reference count becomes zero.

There also may be a to convert to T*, where T is the type of the object which Ref references. Some compilers have bugs that prevent the use of operator T*(). The pointer() member should be used instead.

Delete this reference to the object.

Decrement the object's reference count and delete the object if the count is zero.

Compare two objects returning -1, 0, or 1.

Similar to the C library routine strcmp.

Return 1 if this is a reference to a null object.

Otherwise return 0.

Returns a C++ reference to the reference counted object.

The behaviour is undefined if the object is null.

Returns the reference counted object.

The behaviour is undefined if the object is null.

Assigns to the given base class pointer using dynamic_cast.

If the dynamic_cast fails and the argument is nonnull and has a reference count of zero, then it is deleted.

Reimplemented in sc::RefSCDimension.