/*

 *

 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved

 *

 */

#ifndef __LIGATURESUBSTITUTIONPROCESSOR_H

#define __LIGATURESUBSTITUTIONPROCESSOR_H

/**

 * \file

 * \internal

 */

#include "LETypes.h"

#include "MorphTables.h"

#include "SubtableProcessor.h"

#include "StateTableProcessor.h"

#include "LigatureSubstitution.h"

U_NAMESPACE_BEGIN

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();

    /**

     * ICU "poor man's RTTI", returns a UClassID for the actual class.

     *

     * @stable ICU 2.8

     */

    virtual UClassID getDynamicClassID() const;

    /**

     * ICU "poor man's RTTI", returns a UClassID for this class.

     *

     * @stable ICU 2.8

     */

    static UClassID getStaticClassID();

private:

    LigatureSubstitutionProcessor();

protected:

    ByteOffset ligatureActionTableOffset;

    ByteOffset componentTableOffset;

    ByteOffset ligatureTableOffset;

    const LigatureSubstitutionStateEntry *entryTable;

    le_int32 componentStack[nComponents];

    le_int16 m;

    const LigatureSubstitutionHeader *ligatureSubstitutionHeader;

};

U_NAMESPACE_END

#endif