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Editing: unifunct.h
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ********************************************************************** * Copyright (c) 2002-2005, International Business Machines Corporation * and others. All Rights Reserved. ********************************************************************** * Date Name Description * 01/14/2002 aliu Creation. ********************************************************************** */ #ifndef UNIFUNCT_H #define UNIFUNCT_H #include "unicode/utypes.h" #if U_SHOW_CPLUSPLUS_API #include "unicode/uobject.h" /** * \file * \brief C++ API: Unicode Functor */ U_NAMESPACE_BEGIN class UnicodeMatcher; class UnicodeReplacer; class TransliterationRuleData; /** * <code>UnicodeFunctor</code> 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 <b>polymorphically</b>. 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. * * <p>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 /* U_SHOW_CPLUSPLUS_API */ #endif
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