UnicodeFunctor is an abstract base class for objects
* that perform match and/or replace operations on Unicode strings.
* @author Alan Liu
* @stable ICU 2.4
*/
class U_COMMON_API UnicodeFunctor : public UObject {
public:
/**
* Destructor
* @stable ICU 2.4
*/
virtual ~UnicodeFunctor();
/**
* Return a copy of this object. All UnicodeFunctor objects
* have to support cloning in order to allow classes using
* UnicodeFunctor to implement cloning.
* @stable ICU 2.4
*/
virtual UnicodeFunctor* clone() const = 0;
/**
* Cast 'this' to a UnicodeMatcher* pointer and return the
* pointer, or null if this is not a UnicodeMatcher*. Subclasses
* that mix in UnicodeMatcher as a base class must override this.
* This protocol is required because a pointer to a UnicodeFunctor
* cannot be cast to a pointer to a UnicodeMatcher, since
* UnicodeMatcher is a mixin that does not derive from
* UnicodeFunctor.
* @stable ICU 2.4
*/
virtual UnicodeMatcher* toMatcher() const;
/**
* Cast 'this' to a UnicodeReplacer* pointer and return the
* pointer, or null if this is not a UnicodeReplacer*. Subclasses
* that mix in UnicodeReplacer as a base class must override this.
* This protocol is required because a pointer to a UnicodeFunctor
* cannot be cast to a pointer to a UnicodeReplacer, since
* UnicodeReplacer is a mixin that does not derive from
* UnicodeFunctor.
* @stable ICU 2.4
*/
virtual UnicodeReplacer* toReplacer() const;
/**
* Return the class ID for this class. This is useful only for
* comparing to a return value from getDynamicClassID().
* @return The class ID for all objects of this class.
* @stable ICU 2.0
*/
static UClassID U_EXPORT2 getStaticClassID(void);
/**
* Returns a unique class ID polymorphically. This method
* is to implement a simple version of RTTI, since not all C++
* compilers support genuine RTTI. Polymorphic operator==() and
* clone() methods call this method.
*
* Concrete subclasses of UnicodeFunctor should use the macro * UOBJECT_DEFINE_RTTI_IMPLEMENTATION from uobject.h to * provide definitios getStaticClassID and getDynamicClassID. * * @return The class ID for this object. All objects of a given * class have the same class ID. Objects of other classes have * different class IDs. * @stable ICU 2.4 */ virtual UClassID getDynamicClassID(void) const = 0; /** * Set the data object associated with this functor. The data * object provides context for functor-to-standin mapping. This * method is required when assigning a functor to a different data * object. This function MAY GO AWAY later if the architecture is * changed to pass data object pointers through the API. * @internal ICU 2.1 */ virtual void setData(const TransliterationRuleData*) = 0; protected: /** * Since this class has pure virtual functions, * a constructor can't be used. * @stable ICU 2.0 */ /*UnicodeFunctor();*/ }; /*inline UnicodeFunctor::UnicodeFunctor() {}*/ U_NAMESPACE_END #endif