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