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| -rw-r--r-- | intl/icu/source/i18n/rbt.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/rbt.h b/intl/icu/source/i18n/rbt.h new file mode 100644 index 0000000000..59fa286a45 --- /dev/null +++ b/intl/icu/source/i18n/rbt.h @@ -0,0 +1,223 @@ +// © 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(); + + /** + * 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() const override; + +private: + + void _construct(const UnicodeString& rules, + UTransDirection direction, + UParseError& parseError, + UErrorCode& status); +}; + + +U_NAMESPACE_END + +#endif /* #if !UCONFIG_NO_TRANSLITERATION */ + +#endif |