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comparison: intl/icu/source/i18n/strrepl.h
intl/icu/source/i18n/strrepl.h
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| -1:000000000000 | 0:905c436b25ae |
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| 1 /* | |
| 2 ********************************************************************** | |
| 3 * Copyright (c) 2002-2011, International Business Machines Corporation | |
| 4 * and others. All Rights Reserved. | |
| 5 ********************************************************************** | |
| 6 * Date Name Description | |
| 7 * 01/21/2002 aliu Creation. | |
| 8 ********************************************************************** | |
| 9 */ | |
| 10 | |
| 11 #ifndef STRREPL_H | |
| 12 #define STRREPL_H | |
| 13 | |
| 14 #include "unicode/utypes.h" | |
| 15 | |
| 16 #if !UCONFIG_NO_TRANSLITERATION | |
| 17 | |
| 18 #include "unicode/unifunct.h" | |
| 19 #include "unicode/unirepl.h" | |
| 20 #include "unicode/unistr.h" | |
| 21 | |
| 22 U_NAMESPACE_BEGIN | |
| 23 | |
| 24 class TransliterationRuleData; | |
| 25 | |
| 26 /** | |
| 27 * A replacer that produces static text as its output. The text may | |
| 28 * contain transliterator stand-in characters that represent nested | |
| 29 * UnicodeReplacer objects, making it possible to encode a tree of | |
| 30 * replacers in a StringReplacer. A StringReplacer that contains such | |
| 31 * stand-ins is called a <em>complex</em> StringReplacer. A complex | |
| 32 * StringReplacer has a slower processing loop than a non-complex one. | |
| 33 * @author Alan Liu | |
| 34 */ | |
| 35 class StringReplacer : public UnicodeFunctor, public UnicodeReplacer { | |
| 36 | |
| 37 private: | |
| 38 | |
| 39 /** | |
| 40 * Output text, possibly containing stand-in characters that | |
| 41 * represent nested UnicodeReplacers. | |
| 42 */ | |
| 43 UnicodeString output; | |
| 44 | |
| 45 /** | |
| 46 * Cursor position. Value is ignored if hasCursor is false. | |
| 47 */ | |
| 48 int32_t cursorPos; | |
| 49 | |
| 50 /** | |
| 51 * True if this object outputs a cursor position. | |
| 52 */ | |
| 53 UBool hasCursor; | |
| 54 | |
| 55 /** | |
| 56 * A complex object contains nested replacers and requires more | |
| 57 * complex processing. StringReplacers are initially assumed to | |
| 58 * be complex. If no nested replacers are seen during processing, | |
| 59 * then isComplex is set to false, and future replacements are | |
| 60 * short circuited for better performance. | |
| 61 */ | |
| 62 UBool isComplex; | |
| 63 | |
| 64 /** | |
| 65 * Object that translates stand-in characters in 'output' to | |
| 66 * UnicodeReplacer objects. | |
| 67 */ | |
| 68 const TransliterationRuleData* data; | |
| 69 | |
| 70 public: | |
| 71 | |
| 72 /** | |
| 73 * Construct a StringReplacer that sets the emits the given output | |
| 74 * text and sets the cursor to the given position. | |
| 75 * @param theOutput text that will replace input text when the | |
| 76 * replace() method is called. May contain stand-in characters | |
| 77 * that represent nested replacers. | |
| 78 * @param theCursorPos cursor position that will be returned by | |
| 79 * the replace() method | |
| 80 * @param theData transliterator context object that translates | |
| 81 * stand-in characters to UnicodeReplacer objects | |
| 82 */ | |
| 83 StringReplacer(const UnicodeString& theOutput, | |
| 84 int32_t theCursorPos, | |
| 85 const TransliterationRuleData* theData); | |
| 86 | |
| 87 /** | |
| 88 * Construct a StringReplacer that sets the emits the given output | |
| 89 * text and does not modify the cursor. | |
| 90 * @param theOutput text that will replace input text when the | |
| 91 * replace() method is called. May contain stand-in characters | |
| 92 * that represent nested replacers. | |
| 93 * @param theData transliterator context object that translates | |
| 94 * stand-in characters to UnicodeReplacer objects | |
| 95 */ | |
| 96 StringReplacer(const UnicodeString& theOutput, | |
| 97 const TransliterationRuleData* theData); | |
| 98 | |
| 99 /** | |
| 100 * Copy constructor. | |
| 101 */ | |
| 102 StringReplacer(const StringReplacer& other); | |
| 103 | |
| 104 /** | |
| 105 * Destructor | |
| 106 */ | |
| 107 virtual ~StringReplacer(); | |
| 108 | |
| 109 /** | |
| 110 * Implement UnicodeFunctor | |
| 111 */ | |
| 112 virtual UnicodeFunctor* clone() const; | |
| 113 | |
| 114 /** | |
| 115 * UnicodeFunctor API. Cast 'this' to a UnicodeReplacer* pointer | |
| 116 * and return the pointer. | |
| 117 */ | |
| 118 virtual UnicodeReplacer* toReplacer() const; | |
| 119 | |
| 120 /** | |
| 121 * UnicodeReplacer API | |
| 122 */ | |
| 123 virtual int32_t replace(Replaceable& text, | |
| 124 int32_t start, | |
| 125 int32_t limit, | |
| 126 int32_t& cursor); | |
| 127 | |
| 128 /** | |
| 129 * UnicodeReplacer API | |
| 130 */ | |
| 131 virtual UnicodeString& toReplacerPattern(UnicodeString& result, | |
| 132 UBool escapeUnprintable) const; | |
| 133 | |
| 134 /** | |
| 135 * Implement UnicodeReplacer | |
| 136 */ | |
| 137 virtual void addReplacementSetTo(UnicodeSet& toUnionTo) const; | |
| 138 | |
| 139 /** | |
| 140 * UnicodeFunctor API | |
| 141 */ | |
| 142 virtual void setData(const TransliterationRuleData*); | |
| 143 | |
| 144 /** | |
| 145 * ICU "poor man's RTTI", returns a UClassID for this class. | |
| 146 */ | |
| 147 static UClassID U_EXPORT2 getStaticClassID(); | |
| 148 | |
| 149 /** | |
| 150 * ICU "poor man's RTTI", returns a UClassID for the actual class. | |
| 151 */ | |
| 152 virtual UClassID getDynamicClassID() const; | |
| 153 }; | |
| 154 | |
| 155 U_NAMESPACE_END | |
| 156 | |
| 157 #endif /* #if !UCONFIG_NO_TRANSLITERATION */ | |
| 158 | |
| 159 #endif | |
| 160 | |
| 161 //eof |
