ICU-551.30.tar.gz

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

diff --git a/icuSources/layout/LookupProcessor.cpp b/icuSources/layout/LookupProcessor.cpp
index 4d4347cad8f35f1e4045e0260a83df6180521f60..43b8e44cd5d84bfef36dfccfa185504ab2b929fd 100644 (file)
--- a/icuSources/layout/LookupProcessor.cpp
+++ b/icuSources/layout/LookupProcessor.cpp
@@ -1,6 +1,6 @@
 /*
  *
 /*
  *

- * (C) Copyright IBM Corp. 1998-2010 - All Rights Reserved
+ * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved

  *
  */
 
  *
  */
 


@@ -19,7 +19,7 @@
 
 U_NAMESPACE_BEGIN
 
 
 U_NAMESPACE_BEGIN
 

-le_uint32 LookupProcessor::applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator,
+le_uint32 LookupProcessor::applyLookupTable(const LEReferenceTo<LookupTable> &lookupTable, GlyphIterator *glyphIterator,

                                          const LEFontInstance *fontInstance, LEErrorCode& success) const
 {
     if (LE_FAILURE(success)) {
                                          const LEFontInstance *fontInstance, LEErrorCode& success) const
 {
     if (LE_FAILURE(success)) {


@@ -32,7 +32,7 @@ le_uint32 LookupProcessor::applyLookupTable(const LookupTable *lookupTable, Glyp
     le_uint32 delta;
 
     for (le_uint16 subtable = 0; subtable < subtableCount; subtable += 1) {
     le_uint32 delta;
 
     for (le_uint16 subtable = 0; subtable < subtableCount; subtable += 1) {

-        const LookupSubtable *lookupSubtable = lookupTable->getLookupSubtable(subtable);
+      LEReferenceTo<LookupSubtable> lookupSubtable = lookupTable->getLookupSubtable(lookupTable, subtable, success);

 
         delta = applySubtable(lookupSubtable, lookupType, glyphIterator, fontInstance, success);
 
 
         delta = applySubtable(lookupSubtable, lookupType, glyphIterator, fontInstance, success);
 


@@ -47,7 +47,7 @@ le_uint32 LookupProcessor::applyLookupTable(const LookupTable *lookupTable, Glyp
 }
 
 le_int32 LookupProcessor::process(LEGlyphStorage &glyphStorage, GlyphPositionAdjustments *glyphPositionAdjustments,
 }
 
 le_int32 LookupProcessor::process(LEGlyphStorage &glyphStorage, GlyphPositionAdjustments *glyphPositionAdjustments,

-                              le_bool rightToLeft, const GlyphDefinitionTableHeader *glyphDefinitionTableHeader,
+                                  le_bool rightToLeft, const LEReferenceTo<GlyphDefinitionTableHeader> &glyphDefinitionTableHeader,

                               const LEFontInstance *fontInstance, LEErrorCode& success) const
 {
     if (LE_FAILURE(success)) {
                               const LEFontInstance *fontInstance, LEErrorCode& success) const
 {
     if (LE_FAILURE(success)) {


@@ -64,12 +64,15 @@ le_int32 LookupProcessor::process(LEGlyphStorage &glyphStorage, GlyphPositionAdj
                                 rightToLeft, 0, 0, glyphDefinitionTableHeader);
     le_int32 newGlyphCount = glyphCount;
 
                                 rightToLeft, 0, 0, glyphDefinitionTableHeader);
     le_int32 newGlyphCount = glyphCount;
 

-    for (le_uint16 order = 0; order < lookupOrderCount; order += 1) {
+    for (le_uint16 order = 0; order < lookupOrderCount && LE_SUCCESS(success); order += 1) {

         le_uint16 lookup = lookupOrderArray[order];
         FeatureMask selectMask = lookupSelectArray[lookup];
 
         if (selectMask != 0) {
         le_uint16 lookup = lookupOrderArray[order];
         FeatureMask selectMask = lookupSelectArray[lookup];
 
         if (selectMask != 0) {

-            const LookupTable *lookupTable = lookupListTable->getLookupTable(lookup);
+          const LEReferenceTo<LookupTable> lookupTable = lookupListTable->getLookupTable(lookupListTable, lookup, success);
+          if (!lookupTable.isValid() ||LE_FAILURE(success) ) {
+                continue;
+            }

             le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags);
             
             glyphIterator.reset(lookupFlags, selectMask);
             le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags);
             
             glyphIterator.reset(lookupFlags, selectMask);


@@ -95,7 +98,11 @@ le_uint32 LookupProcessor::applySingleLookup(le_uint16 lookupTableIndex, GlyphIt
         return 0;
     }    
 
         return 0;
     }    
 

-    const LookupTable *lookupTable = lookupListTable->getLookupTable(lookupTableIndex);
+    const LEReferenceTo<LookupTable> lookupTable = lookupListTable->getLookupTable(lookupListTable, lookupTableIndex, success);
+    if (!lookupTable.isValid()) {
+        success = LE_INTERNAL_ERROR;
+        return 0;
+    }

     le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags);
     GlyphIterator tempIterator(*glyphIterator, lookupFlags);
     le_uint32 delta = applyLookupTable(lookupTable, &tempIterator, fontInstance, success);
     le_uint16 lookupFlags = SWAPW(lookupTable->lookupFlags);
     GlyphIterator tempIterator(*glyphIterator, lookupFlags);
     le_uint32 delta = applyLookupTable(lookupTable, &tempIterator, fontInstance, success);


@@ -103,30 +110,35 @@ le_uint32 LookupProcessor::applySingleLookup(le_uint16 lookupTableIndex, GlyphIt
     return delta;
 }
 
     return delta;
 }
 

-le_int32 LookupProcessor::selectLookups(const FeatureTable *featureTable, FeatureMask featureMask, le_int32 order)
+le_int32 LookupProcessor::selectLookups(const LEReferenceTo<FeatureTable> &featureTable, FeatureMask featureMask, le_int32 order, LEErrorCode &success)

 {
 {

-    le_uint16 lookupCount = featureTable? SWAPW(featureTable->lookupCount) : 0;
+  le_uint16 lookupCount = featureTable.isValid()? SWAPW(featureTable->lookupCount) : 0;

     le_int32  store = order;
     le_int32  store = order;

-
-    for (le_uint16 lookup = 0; lookup < lookupCount; lookup += 1) {
-        le_uint16 lookupListIndex = SWAPW(featureTable->lookupListIndexArray[lookup]);
-
-        lookupSelectArray[lookupListIndex] |= featureMask;
-        lookupOrderArray[store++] = lookupListIndex;
+    
+    LEReferenceToArrayOf<le_uint16> lookupListIndexArray(featureTable, success, featureTable->lookupListIndexArray, lookupCount);
+
+    for (le_uint16 lookup = 0; LE_SUCCESS(success) && lookup < lookupCount; lookup += 1) {
+      le_uint16 lookupListIndex = SWAPW(lookupListIndexArray.getObject(lookup,success));
+      if (lookupListIndex >= lookupSelectCount) {
+        continue;
+      }
+      
+      lookupSelectArray[lookupListIndex] |= featureMask;
+      lookupOrderArray[store++] = lookupListIndex;

     }
 
     return store - order;
 }
 
     }
 
     return store - order;
 }
 

-LookupProcessor::LookupProcessor(const char *baseAddress,
+LookupProcessor::LookupProcessor(const LETableReference &baseAddress,

         Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset,
         LETag scriptTag, LETag languageTag, const FeatureMap *featureMap, le_int32 featureMapCount, le_bool orderFeatures, 
         LEErrorCode& success)
         Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset,
         LETag scriptTag, LETag languageTag, const FeatureMap *featureMap, le_int32 featureMapCount, le_bool orderFeatures, 
         LEErrorCode& success)

-    : lookupListTable(NULL), featureListTable(NULL), lookupSelectArray(NULL),
-      lookupOrderArray(NULL), lookupOrderCount(0)
+    : lookupListTable(), featureListTable(), lookupSelectArray(NULL), lookupSelectCount(0),
+      lookupOrderArray(NULL), lookupOrderCount(0), fReference(baseAddress)

 {
 {

-    const ScriptListTable *scriptListTable = NULL;
-    const LangSysTable *langSysTable = NULL;
+  LEReferenceTo<ScriptListTable> scriptListTable;
+  LEReferenceTo<LangSysTable> langSysTable;

     le_uint16 featureCount = 0;
     le_uint16 lookupListCount = 0;
     le_uint16 requiredFeatureIndex;
     le_uint16 featureCount = 0;
     le_uint16 lookupListCount = 0;
     le_uint16 requiredFeatureIndex;


@@ -136,29 +148,33 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
     } 
 
     if (scriptListOffset != 0) {
     } 
 
     if (scriptListOffset != 0) {

-        scriptListTable = (const ScriptListTable *) (baseAddress + scriptListOffset);
-        langSysTable = scriptListTable->findLanguage(scriptTag, languageTag);
+      scriptListTable = LEReferenceTo<ScriptListTable>(baseAddress, success, scriptListOffset);
+      langSysTable = scriptListTable->findLanguage(scriptListTable, scriptTag, languageTag, success);

 
 

-        if (langSysTable != 0) {
-            featureCount = SWAPW(langSysTable->featureCount);
-        }
+      if (langSysTable.isValid() && LE_SUCCESS(success)) {
+        featureCount = SWAPW(langSysTable->featureCount);
+      }

     }
 
     if (featureListOffset != 0) {
     }
 
     if (featureListOffset != 0) {

-        featureListTable = (const FeatureListTable *) (baseAddress + featureListOffset);
+      featureListTable = LEReferenceTo<FeatureListTable>(baseAddress, success, featureListOffset);

     }
 
     if (lookupListOffset != 0) {
     }
 
     if (lookupListOffset != 0) {

-        lookupListTable = (const LookupListTable *) (baseAddress + lookupListOffset);
+      lookupListTable = LEReferenceTo<LookupListTable>(baseAddress,success, lookupListOffset);
+      if(LE_SUCCESS(success) && lookupListTable.isValid()) {

         lookupListCount = SWAPW(lookupListTable->lookupCount);
         lookupListCount = SWAPW(lookupListTable->lookupCount);

+      }

     }
     
     }
     

-    if (langSysTable == NULL || featureListTable == NULL || lookupListTable == NULL ||
+    if (langSysTable.isEmpty() || featureListTable.isEmpty() || lookupListTable.isEmpty() ||

         featureCount == 0 || lookupListCount == 0) {
         return;
     }
  
         featureCount == 0 || lookupListCount == 0) {
         return;
     }
  

-    requiredFeatureIndex = SWAPW(langSysTable->reqFeatureIndex);
+    if(langSysTable.isValid()) {
+      requiredFeatureIndex = SWAPW(langSysTable->reqFeatureIndex);
+    }

 
     lookupSelectArray = LE_NEW_ARRAY(FeatureMask, lookupListCount);
     if (lookupSelectArray == NULL) {
 
     lookupSelectArray = LE_NEW_ARRAY(FeatureMask, lookupListCount);
     if (lookupSelectArray == NULL) {


@@ -169,29 +185,42 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
     for (int i = 0; i < lookupListCount; i += 1) {
         lookupSelectArray[i] = 0;
     }
     for (int i = 0; i < lookupListCount; i += 1) {
         lookupSelectArray[i] = 0;
     }

+    lookupSelectCount = lookupListCount;

 
     le_int32 count, order = 0;
 
     le_int32 count, order = 0;

-    le_int32 featureReferences = 0;
-    const FeatureTable *featureTable = NULL;
+    le_uint32 featureReferences = 0;
+    LEReferenceTo<FeatureTable> featureTable;

     LETag featureTag;
 
     LETag featureTag;
 

-    const FeatureTable *requiredFeatureTable = NULL;
+    LEReferenceTo<FeatureTable> requiredFeatureTable;

     LETag requiredFeatureTag = 0x00000000U;
 
     // Count the total number of lookups referenced by all features. This will
     // be the maximum number of entries in the lookupOrderArray. We can't use
     // lookupListCount because some lookups might be referenced by more than
     // one feature.
     LETag requiredFeatureTag = 0x00000000U;
 
     // Count the total number of lookups referenced by all features. This will
     // be the maximum number of entries in the lookupOrderArray. We can't use
     // lookupListCount because some lookups might be referenced by more than
     // one feature.

-    for (le_int32 feature = 0; feature < featureCount; feature += 1) {
-        le_uint16 featureIndex = SWAPW(langSysTable->featureIndexArray[feature]);
-
-        featureTable = featureListTable->getFeatureTable(featureIndex, &featureTag);
+    if(featureListTable.isValid() && LE_SUCCESS(success)) {
+      LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount);
+
+      for (le_uint32 feature = 0; LE_SUCCESS(success)&&(feature < featureCount); feature += 1) {
+        le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature, success));
+        
+        featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex,  &featureTag, success); 
+        if (!featureTable.isValid() || LE_FAILURE(success)) {
+          continue;
+        }

         featureReferences += SWAPW(featureTable->lookupCount);
         featureReferences += SWAPW(featureTable->lookupCount);

+      }
+    }
+
+    if (!featureTable.isValid() || LE_FAILURE(success)) {
+        success = LE_INTERNAL_ERROR;
+        return;

     }
 
     if (requiredFeatureIndex != 0xFFFF) {
     }
 
     if (requiredFeatureIndex != 0xFFFF) {

-        requiredFeatureTable = featureListTable->getFeatureTable(requiredFeatureIndex, &requiredFeatureTag);
-        featureReferences += SWAPW(featureTable->lookupCount);
+      requiredFeatureTable = featureListTable->getFeatureTable(featureListTable, requiredFeatureIndex, &requiredFeatureTag, success);
+      featureReferences += SWAPW(featureTable->lookupCount);

     }
 
     lookupOrderArray = LE_NEW_ARRAY(le_uint16, featureReferences);
     }
 
     lookupOrderArray = LE_NEW_ARRAY(le_uint16, featureReferences);


@@ -206,7 +235,7 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
 
         // If this is the required feature, add its lookups
         if (requiredFeatureTag == fm.tag) {
 
         // If this is the required feature, add its lookups
         if (requiredFeatureTag == fm.tag) {

-            count += selectLookups(requiredFeatureTable, fm.mask, order);
+          count += selectLookups(requiredFeatureTable, fm.mask, order, success);

         }
 
         if (orderFeatures) {
         }
 
         if (orderFeatures) {


@@ -216,7 +245,8 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
             }
 
             for (le_uint16 feature = 0; feature < featureCount; feature += 1) {
             }
 
             for (le_uint16 feature = 0; feature < featureCount; feature += 1) {

-                le_uint16 featureIndex = SWAPW(langSysTable->featureIndexArray[feature]);
+              LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount);
+              le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature,success));

  
                 // don't add the required feature to the list more than once...
                 // TODO: Do we need this check? (Spec. says required feature won't be in feature list...)
  
                 // don't add the required feature to the list more than once...
                 // TODO: Do we need this check? (Spec. says required feature won't be in feature list...)


@@ -224,10 +254,10 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
                     continue;
                 }
 
                     continue;
                 }
 

-                featureTable = featureListTable->getFeatureTable(featureIndex, &featureTag);
+                featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex, &featureTag, success);

 
                 if (featureTag == fm.tag) {
 
                 if (featureTag == fm.tag) {

-                    count += selectLookups(featureTable, fm.mask, order + count);
+                  count += selectLookups(featureTable, fm.mask, order + count, success);

                 }
             }
 
                 }
             }
 


@@ -236,9 +266,10 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
             }
 
             order += count;
             }
 
             order += count;

-        } else {
-            for (le_uint16 feature = 0; feature < featureCount; feature += 1) {
-                le_uint16 featureIndex = SWAPW(langSysTable->featureIndexArray[feature]);
+        } else if(langSysTable.isValid()) {
+          LEReferenceToArrayOf<le_uint16> featureIndexArray(langSysTable, success, langSysTable->featureIndexArray, featureCount);
+          for (le_uint16 feature = 0; LE_SUCCESS(success)&& (feature < featureCount); feature += 1) {
+            le_uint16 featureIndex = SWAPW(featureIndexArray.getObject(feature,success));

  
                 // don't add the required feature to the list more than once...
                 // NOTE: This check is commented out because the spec. says that
  
                 // don't add the required feature to the list more than once...
                 // NOTE: This check is commented out because the spec. says that


@@ -250,10 +281,10 @@ LookupProcessor::LookupProcessor(const char *baseAddress,
                 }
 #endif
 
                 }
 #endif
 

-                featureTable = featureListTable->getFeatureTable(featureIndex, &featureTag);
+                featureTable = featureListTable->getFeatureTable(featureListTable, featureIndex, &featureTag, success);

 
                 if (featureTag == fm.tag) {
 
                 if (featureTag == fm.tag) {

-                    order += selectLookups(featureTable, fm.mask, order);
+                  order += selectLookups(featureTable, fm.mask, order, success);

                 }
             }
         }
                 }
             }
         }