1 /*
2  *
3  * (C) Copyright IBM Corp. 1998-2014 - All Rights Reserved
4  *
5  */
6 
7 #ifndef __LIGATURESUBSTITUTIONPROCESSOR_H
8 #define __LIGATURESUBSTITUTIONPROCESSOR_H
9 
10 /**
11  * \file
12  * \internal
13  */
14 
15 #include "LETypes.h"
16 #include "MorphTables.h"
17 #include "SubtableProcessor.h"
18 #include "StateTableProcessor.h"
19 #include "LigatureSubstitution.h"
20 
21 U_NAMESPACE_BEGIN
22 
23 class LEGlyphStorage;
24 
25 #define nComponents 16
26 
27 class LigatureSubstitutionProcessor : public StateTableProcessor
28 {
29 public:
30     virtual void beginStateTable();
31 
32     virtual ByteOffset processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index);
33 
34     virtual void endStateTable();
35 
36     LigatureSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success);
37     virtual ~LigatureSubstitutionProcessor();
38 
39     /**
40      * ICU "poor man's RTTI", returns a UClassID for the actual class.
41      *
42      * @deprecated ICU 54. See {@link icu::LayoutEngine}
43      */
44     virtual UClassID getDynamicClassID() const;
45 
46     /**
47      * ICU "poor man's RTTI", returns a UClassID for this class.
48      *
49      * @deprecated ICU 54. See {@link icu::LayoutEngine}
50      */
51     static UClassID getStaticClassID();
52 
53 private:
54     LigatureSubstitutionProcessor();
55 
56 protected:
57     ByteOffset ligatureActionTableOffset;
58     ByteOffset componentTableOffset;
59     ByteOffset ligatureTableOffset;
60 
61     LEReferenceToArrayOf<LigatureSubstitutionStateEntry> entryTable;
62 
63     le_int32 componentStack[nComponents];
64     le_int16 m;
65 
66     LEReferenceTo<LigatureSubstitutionHeader> ligatureSubstitutionHeader;
67 
68 };
69 
70 U_NAMESPACE_END
71 #endif
72