0N/A/*
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A *
0N/A */
0N/A
0N/A/*
0N/A *
5891N/A * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
0N/A *
0N/A */
0N/A
0N/A#ifndef __STATETABLES_H
0N/A#define __STATETABLES_H
0N/A
1693N/A/**
1693N/A * \file
1693N/A * \internal
1693N/A */
1693N/A
0N/A#include "LETypes.h"
0N/A#include "LayoutTables.h"
0N/A
1693N/AU_NAMESPACE_BEGIN
1693N/A
5971N/A
5971N/A
5971N/A
5971N/A/*
5971N/A * State table loop detection.
5971N/A * Detects if too many ( LE_STATE_PATIENCE_COUNT ) state changes occur without moving the glyph index 'g'.
5971N/A *
5971N/A * Usage (pseudocode):
5971N/A *
5971N/A * {
5971N/A * LE_STATE_PATIENCE_INIT();
5971N/A *
5971N/A * int g=0; // the glyph index - expect it to be moving
5971N/A *
5971N/A * for(;;) {
5971N/A * if(LE_STATE_PATIENCE_DECR()) { // decrements the patience counter
5971N/A * // ran out of patience, get out.
5971N/A * break;
5971N/A * }
5971N/A *
5971N/A * LE_STATE_PATIENCE_CURR(int, g); // store the 'current'
5971N/A * state = newState(state,g);
5971N/A * g+= <something, could be zero>;
5971N/A * LE_STATE_PATIENCE_INCR(g); // if g has moved, increment the patience counter. Otherwise leave it.
5971N/A * }
5971N/A *
5971N/A */
5971N/A
5971N/A#define LE_STATE_PATIENCE_COUNT 4096 /**< give up if a state table doesn't move the glyph after this many iterations */
5971N/A#define LE_STATE_PATIENCE_INIT() le_uint32 le_patience_count = LE_STATE_PATIENCE_COUNT
5971N/A#define LE_STATE_PATIENCE_DECR() --le_patience_count==0
5971N/A#define LE_STATE_PATIENCE_CURR(type,x) type le_patience_curr=(x)
5971N/A#define LE_STATE_PATIENCE_INCR(x) if((x)!=le_patience_curr) ++le_patience_count;
5971N/A
5971N/A
0N/Astruct StateTableHeader
0N/A{
0N/A le_int16 stateSize;
0N/A ByteOffset classTableOffset;
0N/A ByteOffset stateArrayOffset;
0N/A ByteOffset entryTableOffset;
0N/A};
0N/A
5891N/Astruct StateTableHeader2
5891N/A{
5891N/A le_uint32 nClasses;
5891N/A le_uint32 classTableOffset;
5891N/A le_uint32 stateArrayOffset;
5891N/A le_uint32 entryTableOffset;
5891N/A};
5891N/A
0N/Aenum ClassCodes
0N/A{
0N/A classCodeEOT = 0,
0N/A classCodeOOB = 1,
0N/A classCodeDEL = 2,
0N/A classCodeEOL = 3,
0N/A classCodeFirstFree = 4,
0N/A classCodeMAX = 0xFF
0N/A};
0N/A
0N/Atypedef le_uint8 ClassCode;
0N/A
0N/Astruct ClassTable
0N/A{
0N/A TTGlyphID firstGlyph;
0N/A le_uint16 nGlyphs;
0N/A ClassCode classArray[ANY_NUMBER];
0N/A};
5980N/ALE_VAR_ARRAY(ClassTable, classArray)
0N/A
0N/Aenum StateNumber
0N/A{
0N/A stateSOT = 0,
0N/A stateSOL = 1,
0N/A stateFirstFree = 2,
0N/A stateMAX = 0xFF
0N/A};
0N/A
0N/Atypedef le_uint8 EntryTableIndex;
0N/A
0N/Astruct StateEntry
0N/A{
0N/A ByteOffset newStateOffset;
0N/A le_int16 flags;
0N/A};
0N/A
5891N/Atypedef le_uint16 EntryTableIndex2;
5891N/A
5891N/Astruct StateEntry2 // same struct different interpretation
5891N/A{
5891N/A le_uint16 newStateIndex;
5891N/A le_uint16 flags;
5891N/A};
5891N/A
1693N/AU_NAMESPACE_END
0N/A#endif
1693N/A