icuSources/i18n/fphdlimp.h

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 * Copyright (C) 2009-2015, International Business Machines Corporation and    *
   6 * others. All Rights Reserved.                                                *
   7 *******************************************************************************
   8 */
   9
  10 #ifndef FPHDLIMP_H
  11 #define FPHDLIMP_H
  12
  13 #if !UCONFIG_NO_FORMATTING
  14
  15 #include "unicode/utypes.h"
  16 #include "unicode/fieldpos.h"
  17 #include "unicode/fpositer.h"
  18
  19 U_NAMESPACE_BEGIN
  20
  21 // utility FieldPositionHandler
  22 // base class, null implementation
  23
  24 class U_I18N_API FieldPositionHandler: public UMemory {
  25  public:
  26   virtual ~FieldPositionHandler();
  27   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  28   virtual void shiftLast(int32_t delta);
  29   virtual UBool isRecording(void) const;
  30 };
  31
  32
  33 // utility subclass FieldPositionOnlyHandler
  34
  35 class FieldPositionOnlyHandler : public FieldPositionHandler {
  36   FieldPosition& pos;
  37
  38  public:
  39   FieldPositionOnlyHandler(FieldPosition& pos);
  40   virtual ~FieldPositionOnlyHandler();
  41
  42   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  43   virtual void shiftLast(int32_t delta);
  44   virtual UBool isRecording(void) const;
  45 };
  46
  47
  48 // utility subclass FieldPositionIteratorHandler
  49
  50 class FieldPositionIteratorHandler : public FieldPositionHandler {
  51   FieldPositionIterator* iter; // can be NULL
  52   UVector32* vec;
  53   UErrorCode status;
  54
  55   // Note, we keep a reference to status, so if status is on the stack, we have
  56   // to be destroyed before status goes out of scope.  Easiest thing is to
  57   // allocate us on the stack in the same (or narrower) scope as status has.
  58   // This attempts to encourage that by blocking heap allocation.
  59   void *operator new(size_t s);
  60   void *operator new[](size_t s);
  61
  62  public:
  63   FieldPositionIteratorHandler(FieldPositionIterator* posIter, UErrorCode& status);
  64   ~FieldPositionIteratorHandler();
  65
  66   virtual void addAttribute(int32_t id, int32_t start, int32_t limit);
  67   virtual void shiftLast(int32_t delta);
  68   virtual UBool isRecording(void) const;
  69 };
  70
  71 U_NAMESPACE_END
  72
  73 #endif /* !UCONFIG_NO_FORMATTING */
  74
  75 #endif /* FPHDLIMP_H */