icuSources/test/intltest/sfwdchit.h

   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