/*

 * 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.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

/*

 *

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

 *

 */

#ifndef __LOOKUPTABLES_H

#define __LOOKUPTABLES_H

#include "LETypes.h"

#include "LayoutTables.h"

enum LookupTableFormat

{

    ltfSimpleArray      = 0,

    ltfSegmentSingle    = 2,

    ltfSegmentArray     = 4,

    ltfSingleTable      = 6,

    ltfTrimmedArray     = 8

};

typedef le_int16 LookupValue;

struct LookupTable

{

    le_int16 format;

};

struct LookupSegment

{

    TTGlyphID   lastGlyph;

    TTGlyphID   firstGlyph;

    LookupValue value;

};

struct LookupSingle

{

    TTGlyphID   glyph;

    LookupValue value;

};

struct BinarySearchLookupTable : LookupTable

{

    le_int16 unitSize;

    le_int16 nUnits;

    le_int16 searchRange;

    le_int16 entrySelector;

    le_int16 rangeShift;

    const LookupSegment *lookupSegment(const LookupSegment *segments, LEGlyphID glyph) const;

    const LookupSingle *lookupSingle(const LookupSingle *entries, LEGlyphID glyph) const;

};

struct SimpleArrayLookupTable : LookupTable

{

    LookupValue valueArray[ANY_NUMBER];

};

struct SegmentSingleLookupTable : BinarySearchLookupTable

{

    LookupSegment segments[ANY_NUMBER];

};

struct SegmentArrayLookupTable : BinarySearchLookupTable

{

    LookupSegment segments[ANY_NUMBER];

};

struct SingleTableLookupTable : BinarySearchLookupTable

{

    LookupSingle entries[ANY_NUMBER];

};

struct TrimmedArrayLookupTable : LookupTable

{

    TTGlyphID   firstGlyph;

    TTGlyphID   glyphCount;

    LookupValue valueArray[ANY_NUMBER];

};

#endif