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