icuSources/i18n/fphdlimp.h

   1 /*
   2 *******************************************************************************
   3 * Copyright (C) 2009-2010, International Business Machines Corporation and    *
   4 * others. All Rights Reserved.                                                *
   5 *******************************************************************************
   6 */
   7
   8 #ifndef FPHDLIMP_H
   9 #define FPHDLIMP_H
  10
  11 #if !UCONFIG_NO_FORMATTING
  12
  13 #include "unicode/utypes.h"
  14 #include "unicode/fieldpos.h"
  15 #include "unicode/fpositer.h"
  16
  17 U_NAMESPACE_BEGIN
  18
  19 // utility FieldPositionHandler
  20 // base class, null implementation
  21
  22 class FieldPositionHandler: public UMemory {
  23  public:
  24   virtual ~FieldPositionHandler();
  25   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  26   virtual void shiftLast(int32_t delta);
  27   virtual UBool isRecording(void);
  28 };
  29
  30
  31 // utility subclass FieldPositionOnlyHandler
  32
  33 class FieldPositionOnlyHandler : public FieldPositionHandler {
  34   FieldPosition& pos;
  35
  36  public:
  37   FieldPositionOnlyHandler(FieldPosition& pos);
  38   virtual ~FieldPositionOnlyHandler();
  39
  40   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  41   virtual void shiftLast(int32_t delta);
  42   virtual UBool isRecording(void);
  43 };
  44
  45
  46 // utility subclass FieldPositionIteratorHandler
  47
  48 class FieldPositionIteratorHandler : public FieldPositionHandler {
  49   FieldPositionIterator* iter; // can be NULL
  50   UVector32* vec;
  51   UErrorCode status;
  52
  53   // Note, we keep a reference to status, so if status is on the stack, we have
  54   // to be destroyed before status goes out of scope.  Easiest thing is to
  55   // allocate us on the stack in the same (or narrower) scope as status has.
  56   // This attempts to encourage that by blocking heap allocation.
  57   void *operator new(size_t s);
  58   void *operator new[](size_t s);
  59
  60  public:
  61   FieldPositionIteratorHandler(FieldPositionIterator* posIter, UErrorCode& status);
  62   ~FieldPositionIteratorHandler();
  63
  64   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  65   virtual void shiftLast(int32_t delta);
  66   virtual UBool isRecording(void);
  67 };
  68
  69 U_NAMESPACE_END
  70
  71 #endif /* !UCONFIG_NO_FORMATTING */
  72
  73 #endif /* FPHDLIMP_H */