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 */
76