| Victor Chang | 7322950 | 2020-09-17 13:39:19 +0100 | [diff] [blame] | 1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| 3 | /* |
| 4 | ********************************************************************** |
| 5 | * Copyright (c) 2002-2011, International Business Machines Corporation |
| 6 | * and others. All Rights Reserved. |
| 7 | ********************************************************************** |
| 8 | * Date Name Description |
| 9 | * 02/04/2002 aliu Creation. |
| 10 | ********************************************************************** |
| 11 | */ |
| 12 | |
| 13 | #ifndef FUNCREPL_H |
| 14 | #define FUNCREPL_H |
| 15 | |
| 16 | #include "unicode/utypes.h" |
| 17 | |
| 18 | #if !UCONFIG_NO_TRANSLITERATION |
| 19 | |
| 20 | #include "unicode/unifunct.h" |
| 21 | #include "unicode/unirepl.h" |
| 22 | |
| 23 | U_NAMESPACE_BEGIN |
| 24 | |
| 25 | class Transliterator; |
| 26 | |
| 27 | /** |
| 28 | * A replacer that calls a transliterator to generate its output text. |
| 29 | * The input text to the transliterator is the output of another |
| 30 | * UnicodeReplacer object. That is, this replacer wraps another |
| 31 | * replacer with a transliterator. |
| 32 | * |
| 33 | * @author Alan Liu |
| 34 | */ |
| 35 | class FunctionReplacer : public UnicodeFunctor, public UnicodeReplacer { |
| 36 | |
| 37 | private: |
| 38 | |
| 39 | /** |
| 40 | * The transliterator. Must not be null. OWNED. |
| 41 | */ |
| 42 | Transliterator* translit; |
| 43 | |
| 44 | /** |
| 45 | * The replacer object. This generates text that is then |
| 46 | * processed by 'translit'. Must not be null. OWNED. |
| 47 | */ |
| 48 | UnicodeFunctor* replacer; |
| 49 | |
| 50 | public: |
| 51 | |
| 52 | /** |
| 53 | * Construct a replacer that takes the output of the given |
| 54 | * replacer, passes it through the given transliterator, and emits |
| 55 | * the result as output. |
| 56 | */ |
| 57 | FunctionReplacer(Transliterator* adoptedTranslit, |
| 58 | UnicodeFunctor* adoptedReplacer); |
| 59 | |
| 60 | /** |
| 61 | * Copy constructor. |
| 62 | */ |
| 63 | FunctionReplacer(const FunctionReplacer& other); |
| 64 | |
| 65 | /** |
| 66 | * Destructor |
| 67 | */ |
| 68 | virtual ~FunctionReplacer(); |
| 69 | |
| 70 | /** |
| 71 | * Implement UnicodeFunctor |
| 72 | */ |
| 73 | virtual FunctionReplacer* clone() const; |
| 74 | |
| 75 | /** |
| 76 | * UnicodeFunctor API. Cast 'this' to a UnicodeReplacer* pointer |
| 77 | * and return the pointer. |
| 78 | */ |
| 79 | virtual UnicodeReplacer* toReplacer() const; |
| 80 | |
| 81 | /** |
| 82 | * UnicodeReplacer API |
| 83 | */ |
| 84 | virtual int32_t replace(Replaceable& text, |
| 85 | int32_t start, |
| 86 | int32_t limit, |
| 87 | int32_t& cursor); |
| 88 | |
| 89 | /** |
| 90 | * UnicodeReplacer API |
| 91 | */ |
| 92 | virtual UnicodeString& toReplacerPattern(UnicodeString& rule, |
| 93 | UBool escapeUnprintable) const; |
| 94 | |
| 95 | /** |
| 96 | * Implement UnicodeReplacer |
| 97 | */ |
| 98 | virtual void addReplacementSetTo(UnicodeSet& toUnionTo) const; |
| 99 | |
| 100 | /** |
| 101 | * UnicodeFunctor API |
| 102 | */ |
| 103 | virtual void setData(const TransliterationRuleData*); |
| 104 | |
| 105 | /** |
| 106 | * ICU "poor man's RTTI", returns a UClassID for the actual class. |
| 107 | */ |
| 108 | virtual UClassID getDynamicClassID() const; |
| 109 | |
| 110 | /** |
| 111 | * ICU "poor man's RTTI", returns a UClassID for this class. |
| 112 | */ |
| 113 | static UClassID U_EXPORT2 getStaticClassID(); |
| 114 | }; |
| 115 | |
| 116 | U_NAMESPACE_END |
| 117 | |
| 118 | #endif /* #if !UCONFIG_NO_TRANSLITERATION */ |
| 119 | #endif |
| 120 | |
| 121 | //eof |