--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/ContextualSubstSubtables.h	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,213 @@
+/*
+ *
+ * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
+ *
+ */
+
+#ifndef __CONTEXTUALSUBSTITUTIONSUBTABLES_H
+#define __CONTEXTUALSUBSTITUTIONSUBTABLES_H
+
+/**
+ * \file
+ * \internal
+ */
+
+#include "LETypes.h"
+#include "LEFontInstance.h"
+#include "OpenTypeTables.h"
+#include "GlyphSubstitutionTables.h"
+#include "GlyphIterator.h"
+#include "LookupProcessor.h"
+
+U_NAMESPACE_BEGIN
+
+struct SubstitutionLookupRecord
+{
+    le_uint16  sequenceIndex;
+    le_uint16  lookupListIndex;
+};
+
+struct ContextualSubstitutionBase : GlyphSubstitutionSubtable
+{
+    static le_bool matchGlyphIDs(
+        const TTGlyphID *glyphArray, le_uint16 glyphCount, GlyphIterator *glyphIterator,
+        le_bool backtrack = FALSE);
+
+    static le_bool matchGlyphClasses(
+        const le_uint16 *classArray, le_uint16 glyphCount, GlyphIterator *glyphIterator,
+        const ClassDefinitionTable *classDefinitionTable, le_bool backtrack = FALSE);
+
+    static le_bool matchGlyphCoverages(
+        const Offset *coverageTableOffsetArray, le_uint16 glyphCount,
+        GlyphIterator *glyphIterator, const char *offsetBase, le_bool backtrack = FALSE);
+
+    static void applySubstitutionLookups(
+        const LookupProcessor *lookupProcessor, 
+        const SubstitutionLookupRecord *substLookupRecordArray,
+        le_uint16 substCount,
+        GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance,
+        le_int32 position,
+        LEErrorCode& success);
+};
+
+struct ContextualSubstitutionSubtable : ContextualSubstitutionBase
+{
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct ContextualSubstitutionFormat1Subtable : ContextualSubstitutionSubtable
+{
+    le_uint16  subRuleSetCount;
+    Offset  subRuleSetTableOffsetArray[ANY_NUMBER];
+
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct SubRuleSetTable
+{
+    le_uint16  subRuleCount;
+    Offset  subRuleTableOffsetArray[ANY_NUMBER];
+
+};
+
+// NOTE: Multiple variable size arrays!!
+struct SubRuleTable
+{
+    le_uint16  glyphCount;
+    le_uint16  substCount;
+    TTGlyphID inputGlyphArray[ANY_NUMBER];
+  //SubstitutionLookupRecord substLookupRecordArray[ANY_NUMBER];
+};
+
+struct ContextualSubstitutionFormat2Subtable : ContextualSubstitutionSubtable
+{
+    Offset  classDefTableOffset;
+    le_uint16  subClassSetCount;
+    Offset  subClassSetTableOffsetArray[ANY_NUMBER];
+
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct SubClassSetTable
+{
+    le_uint16  subClassRuleCount;
+    Offset  subClassRuleTableOffsetArray[ANY_NUMBER];
+};
+
+// NOTE: Multiple variable size arrays!!
+struct SubClassRuleTable
+{
+    le_uint16  glyphCount;
+    le_uint16  substCount;
+    le_uint16  classArray[ANY_NUMBER];
+  //SubstitutionLookupRecord substLookupRecordArray[ANY_NUMBER];
+};
+
+// NOTE: This isn't a subclass of GlyphSubstitutionSubtable 'cause
+// it has an array of coverage tables instead of a single coverage table...
+//
+// NOTE: Multiple variable size arrays!!
+struct ContextualSubstitutionFormat3Subtable
+{
+    le_uint16  substFormat;
+    le_uint16  glyphCount;
+    le_uint16  substCount;
+    Offset  coverageTableOffsetArray[ANY_NUMBER];
+  //SubstitutionLookupRecord substLookupRecord[ANY_NUMBER];
+
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct ChainingContextualSubstitutionSubtable : ContextualSubstitutionBase
+{
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct ChainingContextualSubstitutionFormat1Subtable : ChainingContextualSubstitutionSubtable
+{
+    le_uint16  chainSubRuleSetCount;
+    Offset  chainSubRuleSetTableOffsetArray[ANY_NUMBER];
+
+    le_uint32  process (const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct ChainSubRuleSetTable
+{
+    le_uint16  chainSubRuleCount;
+    Offset  chainSubRuleTableOffsetArray[ANY_NUMBER];
+
+};
+
+// NOTE: Multiple variable size arrays!!
+struct ChainSubRuleTable
+{
+    le_uint16  backtrackGlyphCount;
+    TTGlyphID backtrackGlyphArray[ANY_NUMBER];
+  //le_uint16  inputGlyphCount;
+  //TTGlyphID inputGlyphArray[ANY_NUMBER];
+  //le_uint16  lookaheadGlyphCount;
+  //TTGlyphID lookaheadGlyphArray[ANY_NUMBER];
+  //le_uint16  substCount;
+  //SubstitutionLookupRecord substLookupRecordArray[ANY_NUMBER];
+};
+
+struct ChainingContextualSubstitutionFormat2Subtable : ChainingContextualSubstitutionSubtable
+{
+    Offset  backtrackClassDefTableOffset;
+    Offset  inputClassDefTableOffset;
+    Offset  lookaheadClassDefTableOffset;
+    le_uint16  chainSubClassSetCount;
+    Offset  chainSubClassSetTableOffsetArray[ANY_NUMBER];
+
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+struct ChainSubClassSetTable
+{
+    le_uint16  chainSubClassRuleCount;
+    Offset  chainSubClassRuleTableOffsetArray[ANY_NUMBER];
+};
+
+// NOTE: Multiple variable size arrays!!
+struct ChainSubClassRuleTable
+{
+    le_uint16  backtrackGlyphCount;
+    le_uint16  backtrackClassArray[ANY_NUMBER];
+  //le_uint16  inputGlyphCount;
+  //le_uint16  inputClassArray[ANY_NUMBER];
+  //le_uint16  lookaheadGlyphCount;
+  //le_uint16  lookaheadClassArray[ANY_NUMBER];
+  //le_uint16  substCount;
+  //SubstitutionLookupRecord substLookupRecordArray[ANY_NUMBER];
+};
+
+// NOTE: This isn't a subclass of GlyphSubstitutionSubtable 'cause
+// it has arrays of coverage tables instead of a single coverage table...
+//
+// NOTE: Multiple variable size arrays!!
+struct ChainingContextualSubstitutionFormat3Subtable
+{
+    le_uint16  substFormat;
+    le_uint16  backtrackGlyphCount;
+    Offset  backtrackCoverageTableOffsetArray[ANY_NUMBER];
+  //le_uint16  inputGlyphCount;
+  //Offset  inputCoverageTableOffsetArray[ANY_NUMBER];
+  //le_uint16  lookaheadGlyphCount;
+  //le_uint16  lookaheadCoverageTableOffsetArray[ANY_NUMBER];
+  //le_uint16  substCount;
+  //SubstitutionLookupRecord substLookupRecord[ANY_NUMBER];
+
+    le_uint32  process(const LookupProcessor *lookupProcessor, GlyphIterator *glyphIterator,
+        const LEFontInstance *fontInstance, LEErrorCode& success) const;
+};
+
+U_NAMESPACE_END
+#endif