icuSources/test/intltest/sfwdchit.h

   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