224 lines
8.2 KiB
C++
224 lines
8.2 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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**********************************************************************
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* Copyright (C) 1999-2007, 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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* 11/17/99 aliu Creation.
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**********************************************************************
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*/
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#ifndef RBT_H
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#define RBT_H
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_TRANSLITERATION
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#include "unicode/translit.h"
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#include "unicode/utypes.h"
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#include "unicode/parseerr.h"
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#include "unicode/udata.h"
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#define U_ICUDATA_TRANSLIT U_ICUDATA_NAME U_TREE_SEPARATOR_STRING "translit"
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U_NAMESPACE_BEGIN
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class TransliterationRuleData;
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/**
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* <code>RuleBasedTransliterator</code> is a transliterator
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* built from a set of rules as defined for
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* Transliterator::createFromRules().
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* See the C++ class Transliterator documentation for the rule syntax.
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*
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* @author Alan Liu
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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class RuleBasedTransliterator : public Transliterator {
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private:
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/**
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* The data object is immutable, so we can freely share it with
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* other instances of RBT, as long as we do NOT own this object.
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* TODO: data is no longer immutable. See bugs #1866, 2155
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*/
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TransliterationRuleData* fData;
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/**
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* If true, we own the data object and must delete it.
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*/
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UBool isDataOwned;
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public:
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/**
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* Constructs a new transliterator from the given rules.
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* @param rules rules, separated by ';'
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* @param direction either FORWARD or REVERSE.
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* @exception IllegalArgumentException if rules are malformed.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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RuleBasedTransliterator(const UnicodeString& id,
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const UnicodeString& rules,
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UTransDirection direction,
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UnicodeFilter* adoptedFilter,
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UParseError& parseError,
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UErrorCode& status);
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/**
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* Constructs a new transliterator from the given rules.
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* @param rules rules, separated by ';'
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* @param direction either FORWARD or REVERSE.
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* @exception IllegalArgumentException if rules are malformed.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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/*RuleBasedTransliterator(const UnicodeString& id,
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const UnicodeString& rules,
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UTransDirection direction,
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UnicodeFilter* adoptedFilter,
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UErrorCode& status);*/
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/**
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* Convenience constructor with no filter.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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/*RuleBasedTransliterator(const UnicodeString& id,
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const UnicodeString& rules,
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UTransDirection direction,
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UErrorCode& status);*/
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/**
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* Convenience constructor with no filter and FORWARD direction.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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/*RuleBasedTransliterator(const UnicodeString& id,
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const UnicodeString& rules,
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UErrorCode& status);*/
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/**
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* Convenience constructor with FORWARD direction.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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/*RuleBasedTransliterator(const UnicodeString& id,
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const UnicodeString& rules,
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UnicodeFilter* adoptedFilter,
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UErrorCode& status);*/
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private:
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friend class TransliteratorRegistry; // to access TransliterationRuleData convenience ctor
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/**
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* Convenience constructor.
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* @param id the id for the transliterator.
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* @param theData the rule data for the transliterator.
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* @param adoptedFilter the filter for the transliterator
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*/
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RuleBasedTransliterator(const UnicodeString& id,
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const TransliterationRuleData* theData,
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UnicodeFilter* adoptedFilter = 0);
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friend class Transliterator; // to access following ct
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/**
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* Internal constructor.
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* @param id the id for the transliterator.
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* @param theData the rule data for the transliterator.
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* @param isDataAdopted determine who will own the 'data' object. True, the caller should not delete 'data'.
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*/
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RuleBasedTransliterator(const UnicodeString& id,
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TransliterationRuleData* data,
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UBool isDataAdopted);
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public:
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/**
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* Copy constructor.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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RuleBasedTransliterator(const RuleBasedTransliterator&);
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virtual ~RuleBasedTransliterator();
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/**
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* Implement Transliterator API.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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virtual RuleBasedTransliterator* clone() const override;
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protected:
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/**
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* Implements {@link Transliterator#handleTransliterate}.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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virtual void handleTransliterate(Replaceable& text, UTransPosition& offsets,
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UBool isIncremental) const override;
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public:
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/**
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* Return a representation of this transliterator as source rules.
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* These rules will produce an equivalent transliterator if used
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* to construct a new transliterator.
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* @param result the string to receive the rules. Previous
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* contents will be deleted.
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* @param escapeUnprintable if true then convert unprintable
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* character to their hex escape representations, \uxxxx or
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* \Uxxxxxxxx. Unprintable characters are those other than
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* U+000A, U+0020..U+007E.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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virtual UnicodeString& toRules(UnicodeString& result,
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UBool escapeUnprintable) const override;
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protected:
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/**
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* Implement Transliterator framework
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*/
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virtual void handleGetSourceSet(UnicodeSet& result) const override;
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public:
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/**
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* Override Transliterator framework
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*/
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virtual UnicodeSet& getTargetSet(UnicodeSet& result) const override;
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/**
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* Return the class ID for this class. This is useful only for
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* comparing to a return value from getDynamicClassID(). For example:
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* <pre>
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* . Base* polymorphic_pointer = createPolymorphicObject();
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* . if (polymorphic_pointer->getDynamicClassID() ==
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* . Derived::getStaticClassID()) ...
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* </pre>
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* @return The class ID for all objects of this class.
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* @internal Use transliterator factory methods instead since this class will be removed in that release.
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*/
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U_I18N_API static UClassID U_EXPORT2 getStaticClassID(void);
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/**
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* Returns a unique class ID <b>polymorphically</b>. This method
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* is to implement a simple version of RTTI, since not all C++
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* compilers support genuine RTTI. Polymorphic operator==() and
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* clone() methods call this method.
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*
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* @return The class ID for this object. All objects of a given
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* class have the same class ID. Objects of other classes have
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* different class IDs.
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*/
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virtual UClassID getDynamicClassID(void) const override;
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private:
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void _construct(const UnicodeString& rules,
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UTransDirection direction,
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UParseError& parseError,
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UErrorCode& status);
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};
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U_NAMESPACE_END
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#endif /* #if !UCONFIG_NO_TRANSLITERATION */
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#endif
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