60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
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**********************************************************************
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* Copyright (C) 2001, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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* Date Name Description
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* 05/24/01 aliu Creation.
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**********************************************************************
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*/
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#ifndef XFORMTRN_H
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#define XFORMTRN_H
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#include "unicode/translit.h"
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U_NAMESPACE_BEGIN
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/**
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* An abstract class for transliterators based on a transform
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* operation. To create a transliterator that implements a
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* transformation, create a subclass of this class and implement the
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* abstract <code>transform()</code> and <code>hasTransform()</code>
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* methods.
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* @author Alan Liu
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*/
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class U_I18N_API TransformTransliterator : public Transliterator {
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protected:
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/**
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* Constructs a transliterator. For use by subclasses.
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*/
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TransformTransliterator(const UnicodeString& id,
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UnicodeFilter* adoptedFilter);
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/**
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* Implements {@link Transliterator#handleTransliterate}.
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*/
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void handleTransliterate(Replaceable& text, UTransPosition& offset,
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UBool isIncremental) const;
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/**
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* Subclasses must implement this method to determine whether a
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* given character has a transform that is not equal to itself.
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* This is approximately equivalent to <code>c !=
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* transform(String.valueOf(c))</code>, where
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* <code>String.valueOf(c)</code> returns a String containing the
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* single character (not integer) <code>c</code>. Subclasses that
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* transform all their input can simply return <code>true</code>.
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*/
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virtual UBool hasTransform(UChar32 c) const = 0;
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/**
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* Subclasses must implement this method to transform a string.
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*/
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virtual void transform(UnicodeString& s) const = 0;
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};
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U_NAMESPACE_END
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#endif
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