/*

 * %W% %E%

 *

 * (C) Copyright IBM Corp. 2002 - All Rights Reserved

 *

 */

#include "LETypes.h"

#include "OpenTypeTables.h"

#include "GlyphSubstitutionTables.h"

#include "LookupProcessor.h"

#include "ExtensionSubtables.h"

#include "GlyphIterator.h"

#include "LESwaps.h"

U_NAMESPACE_BEGIN

// FIXME: should look at the format too... maybe have a sub-class for it?

le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType,

                                      GlyphIterator *glyphIterator, const LEFontInstance *fontInstance,

                                      LEErrorCode& success) const

{

    if (LE_FAILURE(success)) {

        return 0;

    }

    le_uint16 elt = SWAPW(extensionLookupType);

    if (elt != lookupType) {

        le_uint32 extOffset = SWAPL(extensionOffset);

        LookupSubtable *subtable = (LookupSubtable *) ((char *) this + extOffset);

        return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance, success);

    }

    return 0;

}

U_NAMESPACE_END