LigatureSubstProc.h revision c73f511526464f8e56c242df80552e9b0d94ae3d 
1/*
2 *
3 * (C) Copyright IBM Corp. 1998-2013 - 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
21U_NAMESPACE_BEGIN
22
23class LEGlyphStorage;
24
25#define nComponents 16
26
27class LigatureSubstitutionProcessor : public StateTableProcessor
28{
29public:
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     * @stable ICU 2.8
43     */
44    virtual UClassID getDynamicClassID() const;
45
46    /**
47     * ICU "poor man's RTTI", returns a UClassID for this class.
48     *
49     * @stable ICU 2.8
50     */
51    static UClassID getStaticClassID();
52
53private:
54    LigatureSubstitutionProcessor();
55
56protected:
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
70U_NAMESPACE_END
71#endif
72