ICU-64232.0.1.tar.gz

[apple/icu.git] / icuSources / layout / LigatureSubstProc2.cpp

diff --git a/icuSources/layout/LigatureSubstProc2.cpp b/icuSources/layout/LigatureSubstProc2.cpp
deleted file mode 100644 (file)
index added8a..0000000
--- a/icuSources/layout/LigatureSubstProc2.cpp
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- *
- * (C) Copyright IBM Corp and Others. 1998-2014 - All Rights Reserved
- *
- */
-
-#include "LETypes.h"
-#include "MorphTables.h"
-#include "StateTables.h"
-#include "MorphStateTables.h"
-#include "SubtableProcessor2.h"
-#include "StateTableProcessor2.h"
-#include "LigatureSubstProc2.h"
-#include "LEGlyphStorage.h"
-#include "LESwaps.h"
-
-U_NAMESPACE_BEGIN
-
-#define ExtendedComplement(m) ((le_int32) (~((le_uint32) (m))))
-#define SignBit(m) ((ExtendedComplement(m) >> 1) & (le_int32)(m))
-#define SignExtend(v,m) (((v) & SignBit(m))? ((v) | ExtendedComplement(m)): (v))
-
-UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LigatureSubstitutionProcessor2)
-
-LigatureSubstitutionProcessor2::LigatureSubstitutionProcessor2(const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success)
-  : StateTableProcessor2(morphSubtableHeader, success), 
-  ligActionOffset(0),
-  componentOffset(0), ligatureOffset(0),  entryTable(), ligatureSubstitutionHeader(morphSubtableHeader, success)
-{
-    if (LE_FAILURE(success)) return;
-
-    ligActionOffset = SWAPL(ligatureSubstitutionHeader->ligActionOffset);
-    componentOffset = SWAPL(ligatureSubstitutionHeader->componentOffset);
-    ligatureOffset = SWAPL(ligatureSubstitutionHeader->ligatureOffset);
-
-    entryTable = LEReferenceToArrayOf<LigatureSubstitutionStateEntry2>(stHeader, success, entryTableOffset, LE_UNBOUNDED_ARRAY);
-}
-
-LigatureSubstitutionProcessor2::~LigatureSubstitutionProcessor2()
-{
-}
-
-void LigatureSubstitutionProcessor2::beginStateTable()
-{
-    m = -1;
-}
-
-le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex2 index, LEErrorCode &success)
-{
-    const LigatureSubstitutionStateEntry2 *entry = entryTable.getAlias(index, success);
-    if(LE_FAILURE(success)) return 0;
-
-    le_uint16 nextStateIndex = SWAPW(entry->nextStateIndex);
-    le_uint16 flags = SWAPW(entry->entryFlags);
-    le_uint16 ligActionIndex = SWAPW(entry->ligActionIndex);
-    
-    if (flags & lsfSetComponent) {
-        if (++m >= nComponents) {
-            m = 0;
-        }
-        componentStack[m] = currGlyph;
-    } else if ( m == -1) {
-        // bad font- skip this glyph.
-        //LE_DEBUG_BAD_FONT("m==-1 (componentCount went negative)")
-        currGlyph+= dir;
-        return nextStateIndex;
-    }
-
-    ByteOffset actionOffset = flags & lsfPerformAction;
-
-    if (actionOffset != 0) {
-        LEReferenceTo<LigatureActionEntry> ap(stHeader, success, ligActionOffset); // byte offset
-        ap.addObject(ligActionIndex - 1, success);  // index offset ( one before the actual start, because we will pre-increment)
-        LEReferenceToArrayOf<TTGlyphID> ligatureTable(stHeader, success, ligatureOffset, LE_UNBOUNDED_ARRAY);
-        LigatureActionEntry action;
-        le_int32 offset, i = 0;
-        le_int32 stack[nComponents];
-        le_int16 mm = -1;
-
-        LEReferenceToArrayOf<le_uint16> componentTable(stHeader, success, componentOffset, LE_UNBOUNDED_ARRAY);
-        if(LE_FAILURE(success)) {
-          currGlyph+= dir;
-          return nextStateIndex; // get out! bad font
-        }
-        
-        do {
-            le_int32 componentGlyph = componentStack[m--]; // pop off
-
-            ap.addObject(success);
-            action = SWAPL(*ap.getAlias());
-
-            if (m < 0) {
-                m = nComponents - 1;
-            }
-
-            offset = action & lafComponentOffsetMask;
-            if (offset != 0) {
-                if(componentGlyph > glyphStorage.getGlyphCount() || componentGlyph < 0) {
-                  LE_DEBUG_BAD_FONT("preposterous componentGlyph");
-                  currGlyph+= dir;
-                  return nextStateIndex; // get out! bad font
-                }
-                i += SWAPW(componentTable(LE_GET_GLYPH(glyphStorage[componentGlyph]) + (SignExtend(offset, lafComponentOffsetMask)),success));
-                       
-                if (action & (lafLast | lafStore))  {
-                  TTGlyphID ligatureGlyph = SWAPW(ligatureTable(i,success));
-                    glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], ligatureGlyph);
-                    if(mm==nComponents) {
-                      LE_DEBUG_BAD_FONT("exceeded nComponents");
-                      mm--; // don't overrun the stack.
-                    }
-                    stack[++mm] = componentGlyph;
-                    i = 0;
-                } else {
-                    glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], 0xFFFF);
-                }
-            }
-#if LE_ASSERT_BAD_FONT
-            if(m<0) {
-              LE_DEBUG_BAD_FONT("m<0")
-            }
-#endif
-        } while (!(action & lafLast) && (m>=0) ); // stop if last bit is set, or if run out of items
-
-        while (mm >= 0) {
-            if (++m >= nComponents) {
-                m = 0;
-            }
-
-            componentStack[m] = stack[mm--];
-        }
-    }
-
-    if (!(flags & lsfDontAdvance)) {
-        currGlyph += dir;
-    }
-
-    return nextStateIndex;
-}
-
-void LigatureSubstitutionProcessor2::endStateTable()
-{
-}
-
-U_NAMESPACE_END