| | 1 | // © 2016 and later: Unicode, Inc. and others. |
| | 2 | // License & terms of use: http://www.unicode.org/copyright.html |
| | 3 | /******************************************************************** |
| | 4 | * COPYRIGHT: |
| | 5 | * Copyright (c) 1997-2003, International Business Machines Corporation and |
| | 6 | * others. All Rights Reserved. |
| | 7 | ********************************************************************/ |
| | 8 | |
| | 9 | #ifndef SFDWCHIT_H |
| | 10 | #define SFDWCHIT_H |
| | 11 | |
| | 12 | #include "unicode/chariter.h" |
| | 13 | #include "intltest.h" |
| | 14 | |
| | 15 | class SimpleFwdCharIterator : public ForwardCharacterIterator { |
| | 16 | public: |
| | 17 | // not used -- SimpleFwdCharIterator(const UnicodeString& s); |
| | 18 | SimpleFwdCharIterator(UChar *s, int32_t len, UBool adopt = FALSE); |
| | 19 | |
| | 20 | virtual ~SimpleFwdCharIterator(); |
| | 21 | |
| | 22 | /** |
| | 23 | * Returns true when both iterators refer to the same |
| | 24 | * character in the same character-storage object. |
| | 25 | */ |
| | 26 | // not used -- virtual UBool operator==(const ForwardCharacterIterator& that) const; |
| | 27 | |
| | 28 | /** |
| | 29 | * Generates a hash code for this iterator. |
| | 30 | */ |
| | 31 | virtual int32_t hashCode(void) const; |
| | 32 | |
| | 33 | /** |
| | 34 | * Returns a UClassID for this ForwardCharacterIterator ("poor man's |
| | 35 | * RTTI").<P> Despite the fact that this function is public, |
| | 36 | * DO NOT CONSIDER IT PART OF CHARACTERITERATOR'S API! |
| | 37 | */ |
| | 38 | virtual UClassID getDynamicClassID(void) const; |
| | 39 | |
| | 40 | /** |
| | 41 | * Gets the current code unit for returning and advances to the next code unit |
| | 42 | * in the iteration range |
| | 43 | * (toward endIndex()). If there are |
| | 44 | * no more code units to return, returns DONE. |
| | 45 | */ |
| | 46 | virtual UChar nextPostInc(void); |
| | 47 | |
| | 48 | /** |
| | 49 | * Gets the current code point for returning and advances to the next code point |
| | 50 | * in the iteration range |
| | 51 | * (toward endIndex()). If there are |
| | 52 | * no more code points to return, returns DONE. |
| | 53 | */ |
| | 54 | virtual UChar32 next32PostInc(void); |
| | 55 | |
| | 56 | /** |
| | 57 | * Returns FALSE if there are no more code units or code points |
| | 58 | * at or after the current position in the iteration range. |
| | 59 | * This is used with nextPostInc() or next32PostInc() in forward |
| | 60 | * iteration. |
| | 61 | */ |
| | 62 | virtual UBool hasNext(); |
| | 63 | |
| | 64 | protected: |
| | 65 | SimpleFwdCharIterator() {} |
| | 66 | SimpleFwdCharIterator(const SimpleFwdCharIterator &other) |
| | 67 | : ForwardCharacterIterator(other) {} |
| | 68 | SimpleFwdCharIterator &operator=(const SimpleFwdCharIterator&) { return *this; } |
| | 69 | private: |
| | 70 | static const int32_t kInvalidHashCode; |
| | 71 | static const int32_t kEmptyHashCode; |
| | 72 | |
| | 73 | UChar *fStart, *fEnd, *fCurrent; |
| | 74 | int32_t fLen; |
| | 75 | UBool fBogus; |
| | 76 | int32_t fHashCode; |
| | 77 | }; |
| | 78 | |
| | 79 | #endif |
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