1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26/*
27 *
28 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
29 *
30 */
31
32#ifndef __LIGATURESUBSTITUTIONPROCESSOR_H
33#define __LIGATURESUBSTITUTIONPROCESSOR_H
34
35/**
36 * \file
37 * \internal
38 */
39
40#include "LETypes.h"
41#include "MorphTables.h"
42#include "SubtableProcessor.h"
43#include "StateTableProcessor.h"
44#include "LigatureSubstitution.h"
45
46U_NAMESPACE_BEGIN
47
48class LEGlyphStorage;
49
50#define nComponents 16
51
52class LigatureSubstitutionProcessor : public StateTableProcessor
53{
54public:
55    virtual void beginStateTable();
56
57    virtual ByteOffset processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index, LEErrorCode &success);
58
59    virtual void endStateTable();
60
61    LigatureSubstitutionProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success);
62    virtual ~LigatureSubstitutionProcessor();
63
64    /**
65     * ICU "poor man's RTTI", returns a UClassID for the actual class.
66     *
67     * @stable ICU 2.8
68     */
69    virtual UClassID getDynamicClassID() const;
70
71    /**
72     * ICU "poor man's RTTI", returns a UClassID for this class.
73     *
74     * @stable ICU 2.8
75     */
76    static UClassID getStaticClassID();
77
78private:
79    LigatureSubstitutionProcessor();
80
81protected:
82    ByteOffset ligatureActionTableOffset;
83    ByteOffset componentTableOffset;
84    ByteOffset ligatureTableOffset;
85
86    LEReferenceToArrayOf<LigatureSubstitutionStateEntry> entryTable;
87
88    le_int32 componentStack[nComponents];
89    le_int16 m;
90
91    LEReferenceTo<LigatureSubstitutionHeader> ligatureSubstitutionHeader;
92
93};
94
95U_NAMESPACE_END
96#endif
97