/*

  * %W% %E%

  *

  * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved

  *

  */

 #ifndef __LOOKUPPROCESSOR_H

 #define __LOOKUPPROCESSOR_H

 /**

  * \file

  * \internal

  */

 #include "LETypes.h"

 #include "LEFontInstance.h"

 #include "OpenTypeTables.h"

 //#include "Lookups.h"

 //#include "Features.h"

 U_NAMESPACE_BEGIN

 class  LEFontInstance;

 class  LEGlyphStorage;

 class  GlyphIterator;

 class  GlyphPositionAdjustments;

 struct FeatureTable;

 struct FeatureListTable;

 struct GlyphDefinitionTableHeader;

 struct LookupSubtable;

 struct LookupTable;

 class LookupProcessor : public UMemory {

 public:

     static const LETag notSelected;

     static const LETag defaultFeature;

     le_bool isBogus();

     le_int32 process(LEGlyphStorage &glyphStorage,

         GlyphPositionAdjustments *glyphPositionAdjustments, le_bool rightToLeft,

         const GlyphDefinitionTableHeader *glyphDefinitionTableHeader,

         const LEFontInstance *fontInstance, LEErrorCode& success) const;

     le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator,

         const LEFontInstance *fontInstance, LEErrorCode& success) const;

     le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator,

         const LEFontInstance *fontInstance, LEErrorCode& success) const;

     virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType,

         GlyphIterator *glyphIterator, const LEFontInstance *fontInstance,

         LEErrorCode& success) const = 0;

     virtual ~LookupProcessor();

 protected:

     LookupProcessor(const char *baseAddress,

         Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset,

         LETag scriptTag, LETag languageTag, const LETag *featureOrder);

     LookupProcessor();

     le_int32 selectLookups(const FeatureTable *featureTable, LETag featureTag, le_int32 order);

     const LookupListTable   *lookupListTable;

     const FeatureListTable  *featureListTable;

     LETag                   *lookupSelectArray;

     LETag                   requiredFeatureTag;

     le_uint16               *lookupOrderArray;

     le_uint32               lookupOrderCount;

 private:

     LookupProcessor(const LookupProcessor &other); // forbid copying of this class

     LookupProcessor &operator=(const LookupProcessor &other); // forbid copying of this class

 };

 U_NAMESPACE_END

 #endif