/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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/*
 *
 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
 *
 */

#ifndef __LIGATURESUBSTITUTIONPROCESSOR_H
#define __LIGATURESUBSTITUTIONPROCESSOR_H

#include "LETypes.h"
#include "MorphTables.h"
#include "SubtableProcessor.h"
#include "StateTableProcessor.h"
#include "LigatureSubstitution.h"

class LEGlyphStorage;

#define nComponents 16

class LigatureSubstitutionProcessor : public StateTableProcessor
{
public:
    virtual void beginStateTable();

    virtual ByteOffset processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex index);

    virtual void endStateTable();

    LigatureSubstitutionProcessor(const MorphSubtableHeader *morphSubtableHeader);
    virtual ~LigatureSubstitutionProcessor();

private:
    LigatureSubstitutionProcessor();

protected:
    ByteOffset ligatureActionTableOffset;
    ByteOffset componentTableOffset;
    ByteOffset ligatureTableOffset;

    const LigatureSubstitutionStateEntry *entryTable;

    le_int32 componentStack[nComponents];
    le_int16 m;

    const LigatureSubstitutionHeader *ligatureSubstitutionHeader;
};

#endif