Bug 1355479 - Remove isindex on the Java side and allow the C++ side to reduce malloc in attribute handling.

Tag UXP Issue #1344

10 files changed, 180 insertions, 336 deletions

diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/AttributeName.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/AttributeName.java
index 3377a1f60..24f89ddb0 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/AttributeName.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/AttributeName.java
@@ -33,7 +33,6 @@ import nu.validator.htmlparser.annotation.NsUri;
 import nu.validator.htmlparser.annotation.Prefix;
 import nu.validator.htmlparser.annotation.QName;
 import nu.validator.htmlparser.annotation.Unsigned;
-import nu.validator.htmlparser.annotation.Virtual;
 import nu.validator.htmlparser.common.Interner;
 
 public final class AttributeName
@@ -275,35 +274,19 @@ public final class AttributeName
      */
     static AttributeName nameByBuffer(@NoLength char[] buf, int offset,
             int length
-            // [NOCPP[
-            , boolean checkNcName
-            // ]NOCPP]
             , Interner interner) {
         // XXX deal with offset
         @Unsigned int hash = AttributeName.bufToHash(buf, length);
         int index = Arrays.binarySearch(AttributeName.ATTRIBUTE_HASHES, hash);
         if (index < 0) {
-            return AttributeName.createAttributeName(
-                    Portability.newLocalNameFromBuffer(buf, offset, length,
-                            interner)
-                    // [NOCPP[
-                    , checkNcName
-            // ]NOCPP]
-            );
-        } else {
-            AttributeName attributeName = AttributeName.ATTRIBUTE_NAMES[index];
-            @Local String name = attributeName.getLocal(AttributeName.HTML);
-            if (!Portability.localEqualsBuffer(name, buf, offset, length)) {
-                return AttributeName.createAttributeName(
-                        Portability.newLocalNameFromBuffer(buf, offset, length,
-                                interner)
-                        // [NOCPP[
-                        , checkNcName
-                // ]NOCPP]
-                );
-            }
-            return attributeName;
+            return null;
+        }
+        AttributeName attributeName = AttributeName.ATTRIBUTE_NAMES[index];
+        @Local String name = attributeName.getLocal(AttributeName.HTML);
+        if (!Portability.localEqualsBuffer(name, buf, offset, length)) {
+            return null;
         }
+        return attributeName;
     }
 
     /**
@@ -385,6 +368,8 @@ public final class AttributeName
      */
     private final @Prefix @NoLength String[] prefix;
 
+    // CPPONLY: private final boolean custom;
+
     // [NOCPP[
 
     private final int flags;
@@ -410,7 +395,7 @@ public final class AttributeName
      * @param xmlns
      *            whether this is an xmlns attribute
      */
-    protected AttributeName(@NsUri @NoLength String[] uri,
+    private AttributeName(@NsUri @NoLength String[] uri,
             @Local @NoLength String[] local, @Prefix @NoLength String[] prefix
             // [NOCPP[
             , int flags
@@ -423,8 +408,27 @@ public final class AttributeName
         this.qName = COMPUTE_QNAME(local, prefix);
         this.flags = flags;
         // ]NOCPP]
+        // CPPONLY: this.custom = false;
     }
 
+    // CPPONLY: public AttributeName() {
+    // CPPONLY:     this.uri = AttributeName.ALL_NO_NS;
+    // CPPONLY:     this.local = AttributeName.SAME_LOCAL(null);
+    // CPPONLY:     this.prefix = ALL_NO_PREFIX;
+    // CPPONLY:     this.custom = true;
+    // CPPONLY: }
+    // CPPONLY:
+    // CPPONLY: public boolean isInterned() {
+    // CPPONLY:     return !custom;
+    // CPPONLY: }
+    // CPPONLY:
+    // CPPONLY: public void setNameForNonInterned(@Local String name) {
+    // CPPONLY:     assert custom;
+    // CPPONLY:     local[0] = name;
+    // CPPONLY:     local[1] = name;
+    // CPPONLY:     local[2] = name;
+    // CPPONLY: }
+
     /**
      * Creates an <code>AttributeName</code> for a local name.
      * 
@@ -434,7 +438,7 @@ public final class AttributeName
      *            whether to check ncnameness
      * @return an <code>AttributeName</code>
      */
-    private static AttributeName createAttributeName(@Local String name
+    static AttributeName createAttributeName(@Local String name
     // [NOCPP[
             , boolean checkNcName
     // ]NOCPP]
@@ -452,32 +456,12 @@ public final class AttributeName
     }
 
     /**
-     * Deletes runtime-allocated instances in C++.
-     */
-    @Virtual void release() {
-        // No-op in Java.
-        // Implement as |delete this;| in subclass.
-    }
-
-    /**
      * The C++ destructor.
      */
-    @SuppressWarnings("unused") @Virtual private void destructor() {
+    @SuppressWarnings("unused") private void destructor() {
         Portability.deleteArray(local);
     }
 
-    /**
-     * Clones the attribute using an interner. Returns <code>this</code> in Java
-     * and for non-dynamic instances in C++.
-     * 
-     * @param interner
-     *            an interner
-     * @return a clone
-     */
-    @Virtual public AttributeName cloneAttributeName(Interner interner) {
-        return this;
-    }
-
     // [NOCPP[
     /**
      * Creator for use when the XML violation policy requires an attribute name
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/CoalescingTreeBuilder.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/CoalescingTreeBuilder.java
index 01d76d700..3d87422aa 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/CoalescingTreeBuilder.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/CoalescingTreeBuilder.java
@@ -22,10 +22,10 @@
 
 package nu.validator.htmlparser.impl;
 
-import nu.validator.htmlparser.annotation.NoLength;
-
 import org.xml.sax.SAXException;
 
+import nu.validator.htmlparser.annotation.NoLength;
+
 /**
  * A common superclass for tree builders that coalesce their text nodes.
  * 
@@ -48,13 +48,6 @@ public abstract class CoalescingTreeBuilder<T> extends TreeBuilder<T> {
         appendCharacters(parent, new String(buf, start, length));
     }
 
-    /**
-     * @see nu.validator.htmlparser.impl.TreeBuilder#appendIsindexPrompt(java.lang.Object)
-     */
-    @Override protected void appendIsindexPrompt(T parent) throws SAXException {
-        appendCharacters(parent, "This is a searchable index. Enter search keywords: ");
-    }
-
     protected abstract void appendCharacters(T parent, String text) throws SAXException;
 
     /**
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/ElementName.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/ElementName.java
index b3ca30286..e961c4397 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/ElementName.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/ElementName.java
@@ -192,6 +192,11 @@ public final class ElementName
         assert this.flags == (TreeBuilder.OTHER | NOT_INTERNED);
     }
 
+    // CPPONLY: public static final ElementName ISINDEX = new ElementName("isindex", "isindex", TreeBuilder.ISINDEX | SPECIAL);
+    // [NOCPP[
+    public static final ElementName ISINDEX = new ElementName("isindex", "isindex", TreeBuilder.OTHER);
+    // ]NOCPP]
+
     // START CODE ONLY USED FOR GENERATING CODE uncomment and run to regenerate
 
 //    /**
@@ -421,6 +426,9 @@ public final class ElementName
 //        }
 //        for (int i = 0; i < ELEMENT_NAMES.length; i++) {
 //            ElementName el = ELEMENT_NAMES[i];
+//            if ("isindex".equals(el.name)) {
+//                continue;
+//            }
 //            System.out.println("public static final ElementName "
 //                    + el.constName() + " = new ElementName" + el.toString()
 //                    + ";");
@@ -439,6 +447,7 @@ public final class ElementName
 //        System.out.println("};");
 //    }
 
+
     // START GENERATED CODE
     public static final ElementName AND = new ElementName("and", "and", TreeBuilder.OTHER);
     public static final ElementName ARG = new ElementName("arg", "arg", TreeBuilder.OTHER);
@@ -828,7 +837,6 @@ public final class ElementName
     public static final ElementName APPROX = new ElementName("approx", "approx", TreeBuilder.OTHER);
     public static final ElementName FECOLORMATRIX = new ElementName("fecolormatrix", "feColorMatrix", TreeBuilder.OTHER);
     public static final ElementName FECONVOLVEMATRIX = new ElementName("feconvolvematrix", "feConvolveMatrix", TreeBuilder.OTHER);
-    public static final ElementName ISINDEX = new ElementName("isindex", "isindex", TreeBuilder.ISINDEX | SPECIAL);
     public static final ElementName MATRIX = new ElementName("matrix", "matrix", TreeBuilder.OTHER);
     public static final ElementName APPLY = new ElementName("apply", "apply", TreeBuilder.OTHER);
     public static final ElementName BODY = new ElementName("body", "body", TreeBuilder.BODY | SPECIAL | OPTIONAL_END_TAG);
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/HtmlAttributes.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/HtmlAttributes.java
index 45c9c6c3e..c24ae74f2 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/HtmlAttributes.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/HtmlAttributes.java
@@ -25,7 +25,9 @@
 
 package nu.validator.htmlparser.impl;
 
-import nu.validator.htmlparser.annotation.Auto;
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+
 import nu.validator.htmlparser.annotation.IdType;
 import nu.validator.htmlparser.annotation.Local;
 import nu.validator.htmlparser.annotation.NsUri;
@@ -34,9 +36,6 @@ import nu.validator.htmlparser.annotation.QName;
 import nu.validator.htmlparser.common.Interner;
 import nu.validator.htmlparser.common.XmlViolationPolicy;
 
-import org.xml.sax.Attributes;
-import org.xml.sax.SAXException;
-
 /**
  * Be careful with this class. QName is the name in from HTML tokenization.
  * Otherwise, please refer to the interface doc.
@@ -46,14 +45,10 @@ import org.xml.sax.SAXException;
  */
 public final class HtmlAttributes implements Attributes {
 
-    // [NOCPP[
-
     private static final AttributeName[] EMPTY_ATTRIBUTENAMES = new AttributeName[0];
 
     private static final String[] EMPTY_STRINGS = new String[0];
 
-    // ]NOCPP]
-
     public static final HtmlAttributes EMPTY_ATTRIBUTES = new HtmlAttributes(
             AttributeName.HTML);
 
@@ -61,13 +56,9 @@ public final class HtmlAttributes implements Attributes {
 
     private int length;
 
-    private @Auto AttributeName[] names;
-
-    private @Auto String[] values; // XXX perhaps make this @NoLength?
-    
-    // CPPONLY: private @Auto int[] lines; // XXX perhaps make this @NoLength?
+    private AttributeName[] names;
 
-    // [NOCPP[
+    private String[] values;
 
     private String idValue;
 
@@ -77,21 +68,15 @@ public final class HtmlAttributes implements Attributes {
 
     private String[] xmlnsValues;
 
-    // ]NOCPP]
-
     public HtmlAttributes(int mode) {
         this.mode = mode;
         this.length = 0;
         /*
          * The length of 5 covers covers 98.3% of elements
-         * according to Hixie, but lets round to the next power of two for
-         * jemalloc.
+         * according to Hixie.
          */
-        this.names = new AttributeName[8];
-        this.values = new String[8];
-        // CPPONLY: this.lines = new int[8];
-
-        // [NOCPP[
+        this.names = new AttributeName[5];
+        this.values = new String[5];
 
         this.idValue = null;
 
@@ -101,25 +86,6 @@ public final class HtmlAttributes implements Attributes {
 
         this.xmlnsValues = HtmlAttributes.EMPTY_STRINGS;
 
-        // ]NOCPP]
-    }
-    /*
-    public HtmlAttributes(HtmlAttributes other) {
-        this.mode = other.mode;
-        this.length = other.length;
-        this.names = new AttributeName[other.length];
-        this.values = new String[other.length];
-        // [NOCPP[
-        this.idValue = other.idValue;
-        this.xmlnsLength = other.xmlnsLength;
-        this.xmlnsNames = new AttributeName[other.xmlnsLength];
-        this.xmlnsValues = new String[other.xmlnsLength];
-        // ]NOCPP]
-    }
-    */
-
-    void destructor() {
-        clear(0);
     }
     
     /**
@@ -161,7 +127,6 @@ public final class HtmlAttributes implements Attributes {
      * @return the local name at index
      */
     public @Local String getLocalNameNoBoundsCheck(int index) {
-        // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
         return names[index].getLocal(mode);
     }
 
@@ -171,7 +136,6 @@ public final class HtmlAttributes implements Attributes {
      * @return the namespace URI at index
      */
     public @NsUri String getURINoBoundsCheck(int index) {
-        // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
         return names[index].getUri(mode);
     }
 
@@ -181,7 +145,6 @@ public final class HtmlAttributes implements Attributes {
      * @return the namespace prefix at index
      */
     public @Prefix String getPrefixNoBoundsCheck(int index) {
-        // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
         return names[index].getPrefix(mode);
     }
 
@@ -191,7 +154,6 @@ public final class HtmlAttributes implements Attributes {
      * @return the attribute value at index
      */
     public String getValueNoBoundsCheck(int index) {
-        // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
         return values[index];
     }
 
@@ -201,21 +163,9 @@ public final class HtmlAttributes implements Attributes {
      * @return the attribute name at index
      */
     public AttributeName getAttributeNameNoBoundsCheck(int index) {
-        // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
         return names[index];
     }
 
-    // CPPONLY: /**
-    // CPPONLY: * Obtains a line number without bounds check.
-    // CPPONLY: * @param index a valid attribute index
-    // CPPONLY: * @return the line number at index or -1 if unknown
-    // CPPONLY: */
-    // CPPONLY: public int getLineNoBoundsCheck(int index) {
-    // CPPONLY: assert index < length && index >= 0: "Index out of bounds";
-    // CPPONLY: return lines[index];
-    // CPPONLY: }
-
-    // [NOCPP[
     
     /**
      * Variant of <code>getQName(int index)</code> without bounds check.
@@ -404,15 +354,9 @@ public final class HtmlAttributes implements Attributes {
         }
     }
 
-    // ]NOCPP]
-
     void addAttribute(AttributeName name, String value
-            // [NOCPP[
             , XmlViolationPolicy xmlnsPolicy
-            // ]NOCPP]
-            // CPPONLY: , int line
     ) throws SAXException {
-        // [NOCPP[
         if (name == AttributeName.ID) {
             idValue = value;
         }
@@ -441,8 +385,6 @@ public final class HtmlAttributes implements Attributes {
             }
         }
 
-        // ]NOCPP]
-
         if (names.length == length) {
             int newLen = length << 1; // The first growth covers virtually
             // 100% of elements according to
@@ -453,53 +395,25 @@ public final class HtmlAttributes implements Attributes {
             String[] newValues = new String[newLen];
             System.arraycopy(values, 0, newValues, 0, values.length);
             values = newValues;
-            // CPPONLY: int[] newLines = new int[newLen];
-            // CPPONLY: System.arraycopy(lines, 0, newLines, 0, lines.length);
-            // CPPONLY: lines = newLines;
         }
         names[length] = name;
         values[length] = value;
-        // CPPONLY: lines[length] = line;
         length++;
     }
 
     void clear(int m) {
         for (int i = 0; i < length; i++) {
-            names[i].release();
             names[i] = null;
-            Portability.releaseString(values[i]);
             values[i] = null;
         }
         length = 0;
         mode = m;
-        // [NOCPP[
         idValue = null;
         for (int i = 0; i < xmlnsLength; i++) {
             xmlnsNames[i] = null;
             xmlnsValues[i] = null;
         }
         xmlnsLength = 0;
-        // ]NOCPP]
-    }
-    
-    /**
-     * This is used in C++ to release special <code>isindex</code>
-     * attribute values whose ownership is not transferred.
-     */
-    void releaseValue(int i) {
-        Portability.releaseString(values[i]);        
-    }
-    
-    /**
-     * This is only used for <code>AttributeName</code> ownership transfer
-     * in the isindex case to avoid freeing custom names twice in C++.
-     */
-    void clearWithoutReleasingContents() {
-        for (int i = 0; i < length; i++) {
-            names[i] = null;
-            values[i] = null;
-        }
-        length = 0;
     }
 
     boolean contains(AttributeName name) {
@@ -508,13 +422,11 @@ public final class HtmlAttributes implements Attributes {
                 return true;
             }
         }
-        // [NOCPP[
         for (int i = 0; i < xmlnsLength; i++) {
             if (name.equalsAnother(xmlnsNames[i])) {
                 return true;
             }
         }
-        // ]NOCPP]
         return false;
     }
 
@@ -529,27 +441,20 @@ public final class HtmlAttributes implements Attributes {
     public HtmlAttributes cloneAttributes(Interner interner)
             throws SAXException {
         assert (length == 0
-                // [NOCPP[
                 && xmlnsLength == 0
-                // ]NOCPP]
                 )
                 || mode == 0 || mode == 3;
         HtmlAttributes clone = new HtmlAttributes(0);
         for (int i = 0; i < length; i++) {
-            clone.addAttribute(names[i].cloneAttributeName(interner),
-                    Portability.newStringFromString(values[i])
-                    // [NOCPP[
+            clone.addAttribute(names[i],
+                    values[i]
                     , XmlViolationPolicy.ALLOW
-                    // ]NOCPP]
-                    // CPPONLY: , lines[i]
             );
         }
-        // [NOCPP[
         for (int i = 0; i < xmlnsLength; i++) {
             clone.addAttribute(xmlnsNames[i], xmlnsValues[i],
                     XmlViolationPolicy.ALLOW);
         }
-        // ]NOCPP]
         return clone; // XXX!!!
     }
 
@@ -568,9 +473,10 @@ public final class HtmlAttributes implements Attributes {
             for (int j = 0; j < otherLength; j++) {
                 if (ownLocal == other.names[j].getLocal(AttributeName.HTML)) {
                     found = true;
-                    if (!Portability.stringEqualsString(values[i], other.values[j])) {
+                    if (!values[i].equals(other.values[j])) {
                         return false;
                     }
+                    break;
                 }
             }
             if (!found) {
@@ -579,9 +485,7 @@ public final class HtmlAttributes implements Attributes {
         }
         return true;
     }
-    
-    // [NOCPP[
-    
+
     void processNonNcNames(TreeBuilder<?> treeBuilder, XmlViolationPolicy namePolicy) throws SAXException {
         for (int i = 0; i < length; i++) {
             AttributeName attName = names[i];
@@ -613,8 +517,4 @@ public final class HtmlAttributes implements Attributes {
             }
         }
     }
-
-
-    // ]NOCPP]
-    
 }
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/Tokenizer.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/Tokenizer.java
index 59ff3bd7e..435f071e9 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/Tokenizer.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/Tokenizer.java
@@ -434,6 +434,8 @@ public class Tokenizer implements Locator {
      */
     protected AttributeName attributeName = null;
 
+    // CPPONLY: private AttributeName nonInternedAttributeName = null;
+
     // [NOCPP[
 
     /**
@@ -530,6 +532,7 @@ public class Tokenizer implements Locator {
         this.tagName = null;
         this.nonInternedTagName = new ElementName();
         this.attributeName = null;
+        // CPPONLY: this.nonInternedAttributeName = new AttributeName();
         this.doctypeName = null;
         this.publicIdentifier = null;
         this.systemIdentifier = null;
@@ -560,6 +563,7 @@ public class Tokenizer implements Locator {
         this.tagName = null;
         this.nonInternedTagName = new ElementName();
         this.attributeName = null;
+        // CPPONLY: this.nonInternedAttributeName = new AttributeName();
         this.doctypeName = null;
         this.publicIdentifier = null;
         this.systemIdentifier = null;
@@ -1174,11 +1178,17 @@ public class Tokenizer implements Locator {
     }
 
     private void attributeNameComplete() throws SAXException {
-        attributeName = AttributeName.nameByBuffer(strBuf, 0, strBufLen
-        // [NOCPP[
-                , namePolicy != XmlViolationPolicy.ALLOW
-                // ]NOCPP]
-                , interner);
+        attributeName = AttributeName.nameByBuffer(strBuf, 0, strBufLen, interner);
+        if (attributeName == null) {
+            // [NOCPP[
+            attributeName = AttributeName.createAttributeName(
+                    Portability.newLocalNameFromBuffer(strBuf, 0, strBufLen,
+                            interner),
+                    namePolicy != XmlViolationPolicy.ALLOW);
+            // ]NOCPP]
+            // CPPONLY:     nonInternedAttributeName.setNameForNonInterned(Portability.newLocalNameFromBuffer(strBuf, 0, strBufLen, interner));
+            // CPPONLY:     attributeName = nonInternedAttributeName;
+        }
         clearStrBufAfterUse();
 
         if (attributes == null) {
@@ -1195,7 +1205,6 @@ public class Tokenizer implements Locator {
          */
         if (attributes.contains(attributeName)) {
             errDuplicateAttribute();
-            attributeName.release();
             attributeName = null;
         }
     }
@@ -1244,8 +1253,7 @@ public class Tokenizer implements Locator {
                 // [NOCPP[
             }
             // ]NOCPP]
-            attributeName = null; // attributeName has been adopted by the
-            // |attributes| object
+            attributeName = null;
         } else {
             clearStrBufAfterUse();
         }
@@ -1276,8 +1284,7 @@ public class Tokenizer implements Locator {
             // ]NOCPP]
             // CPPONLY: , attributeLine
             );
-            attributeName = null; // attributeName has been adopted by the
-            // |attributes| object
+            attributeName = null;
         } else {
             // We have a duplicate attribute. Explicitly discard its value.
             clearStrBufAfterUse();
@@ -6667,10 +6674,8 @@ public class Tokenizer implements Locator {
         }
         tagName = null;
         nonInternedTagName.setNameForNonInterned(null);
-        if (attributeName != null) {
-            attributeName.release();
-            attributeName = null;
-        }
+        attributeName = null;
+        // CPPONLY: nonInternedAttributeName.setNameForNonInterned(null);
         tokenHandler.endTokenization();
         if (attributes != null) {
             // [NOCPP[
@@ -6747,13 +6752,8 @@ public class Tokenizer implements Locator {
         endTag = false;
         shouldSuspend = false;
         initDoctypeFields();
-        if (tagName != null) {
-            tagName = null;
-        }
-        if (attributeName != null) {
-            attributeName.release();
-            attributeName = null;
-        }
+        tagName = null;
+        attributeName = null;
         if (newAttributesEachTime) {
             if (attributes != null) {
                 Portability.delete(attributes);
@@ -6818,22 +6818,27 @@ public class Tokenizer implements Locator {
         } else if (other.tagName.isInterned()) {
             tagName = other.tagName;
         } else {
-            // In the C++ case, We might be loading state from another
-            // tokenizer that has atoms from a different tokenizer-scoped
-            // atom table. Therefore, we have to obtain the correspoding
-            // atom from our own atom table.
+            // In the C++ case, the atoms in the other tokenizer are from a
+            // different tokenizer-scoped atom table. Therefore, we have to
+            // obtain the correspoding atom from our own atom table.
             nonInternedTagName.setNameForNonInterned(Portability.newLocalFromLocal(other.tagName.getName(), interner));
             tagName = nonInternedTagName;
         }
 
-        if (attributeName != null) {
-            attributeName.release();
-        }
-        if (other.attributeName == null) {
-            attributeName = null;
-        } else {
-            attributeName = other.attributeName.cloneAttributeName(interner);
-        }
+        // [NOCPP[
+        attributeName = other.attributeName;
+        // ]NOCPP]
+        // CPPONLY: if (other.attributeName == null) {
+        // CPPONLY:     attributeName = null;
+        // CPPONLY: } else if (other.attributeName.isInterned()) {
+        // CPPONLY:     attributeName = other.attributeName;
+        // CPPONLY: } else {
+        // CPPONLY:     // In the C++ case, the atoms in the other tokenizer are from a
+        // CPPONLY:     // different tokenizer-scoped atom table. Therefore, we have to
+        // CPPONLY:     // obtain the correspoding atom from our own atom table.
+        // CPPONLY:     nonInternedAttributeName.setNameForNonInterned(Portability.newLocalFromLocal(other.attributeName.getLocal(AttributeName.HTML), interner));
+        // CPPONLY:     attributeName = nonInternedAttributeName;
+        // CPPONLY: }
 
         Portability.delete(attributes);
         if (other.attributes == null) {
@@ -7075,6 +7080,7 @@ public class Tokenizer implements Locator {
 
     void destructor() {
         Portability.delete(nonInternedTagName);
+        // CPPONLY: Portability.delete(nonInternedAttributeName);
         nonInternedTagName = null;
         // The translator will write refcount tracing stuff here
         Portability.delete(attributes);
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/TreeBuilder.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/TreeBuilder.java
index db0775e18..5e1a93bfd 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/TreeBuilder.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/TreeBuilder.java
@@ -2326,85 +2326,74 @@ public abstract class TreeBuilder<T> implements TokenHandler,
                                 selfClosing = false;
                                 attributes = null; // CPP
                                 break starttagloop;
-                            case ISINDEX:
-                                errIsindex();
-                                if (formPointer != null && !isTemplateContents()) {
-                                    break starttagloop;
-                                }
-                                implicitlyCloseP();
-                                HtmlAttributes formAttrs = new HtmlAttributes(0);
-                                int actionIndex = attributes.getIndex(AttributeName.ACTION);
-                                if (actionIndex > -1) {
-                                    formAttrs.addAttribute(
-                                            AttributeName.ACTION,
-                                            attributes.getValueNoBoundsCheck(actionIndex)
-                                            // [NOCPP[
-                                            , XmlViolationPolicy.ALLOW
-                                    // ]NOCPP]
-                                            // CPPONLY: , attributes.getLineNoBoundsCheck(actionIndex)
-                                    );
-                                }
-                                appendToCurrentNodeAndPushFormElementMayFoster(formAttrs);
-                                appendVoidElementToCurrentMayFoster(
-                                        ElementName.HR,
-                                        HtmlAttributes.EMPTY_ATTRIBUTES);
-                                appendToCurrentNodeAndPushElementMayFoster(
-                                        ElementName.LABEL,
-                                        HtmlAttributes.EMPTY_ATTRIBUTES);
-                                int promptIndex = attributes.getIndex(AttributeName.PROMPT);
-                                if (promptIndex > -1) {
-                                    @Auto char[] prompt = Portability.newCharArrayFromString(attributes.getValueNoBoundsCheck(promptIndex));
-                                    appendCharacters(stack[currentPtr].node,
-                                            prompt, 0, prompt.length);
-                                } else {
-                                    appendIsindexPrompt(stack[currentPtr].node);
-                                }
-                                HtmlAttributes inputAttributes = new HtmlAttributes(
-                                        0);
-                                inputAttributes.addAttribute(
-                                        AttributeName.NAME,
-                                        Portability.newStringFromLiteral("isindex")
-                                        // [NOCPP[
-                                        , XmlViolationPolicy.ALLOW
-                                // ]NOCPP]
-                                // CPPONLY: , tokenizer.getLineNumber()
-                                );
-                                for (int i = 0; i < attributes.getLength(); i++) {
-                                    AttributeName attributeQName = attributes.getAttributeNameNoBoundsCheck(i);
-                                    if (AttributeName.NAME == attributeQName
-                                            || AttributeName.PROMPT == attributeQName) {
-                                        attributes.releaseValue(i);
-                                    } else if (AttributeName.ACTION != attributeQName) {
-                                        inputAttributes.addAttribute(
-                                                attributeQName,
-                                                attributes.getValueNoBoundsCheck(i)
-                                                // [NOCPP[
-                                                , XmlViolationPolicy.ALLOW
-                                        // ]NOCPP]
-                                        // CPPONLY: , attributes.getLineNoBoundsCheck(i)
-                                        );
-                                    }
-                                }
-                                attributes.clearWithoutReleasingContents();
-                                appendVoidElementToCurrentMayFoster(
-                                        "input",
-                                        inputAttributes, formPointer);
-                                pop(); // label
-                                appendVoidElementToCurrentMayFoster(
-                                        ElementName.HR,
-                                        HtmlAttributes.EMPTY_ATTRIBUTES);
-                                pop(); // form
-
-                                if (!isTemplateContents()) {
-                                    formPointer = null;
-                                }
-
-                                selfClosing = false;
-                                // Portability.delete(formAttrs);
-                                // Portability.delete(inputAttributes);
-                                // Don't delete attributes, they are deleted
-                                // later
-                                break starttagloop;
+                            // CPPONLY:case ISINDEX:
+                            // CPPONLY:    errIsindex();
+                            // CPPONLY:    if (formPointer != null && !isTemplateContents()) {
+                            // CPPONLY:        break starttagloop;
+                            // CPPONLY:    }
+                            // CPPONLY:    implicitlyCloseP();
+                            // CPPONLY:    HtmlAttributes formAttrs = new HtmlAttributes(0);
+                            // CPPONLY:    int actionIndex = attributes.getIndex(AttributeName.ACTION);
+                            // CPPONLY:    if (actionIndex > -1) {
+                            // CPPONLY:        formAttrs.addAttribute(
+                            // CPPONLY:                AttributeName.ACTION,
+                            // CPPONLY:                attributes.getValueNoBoundsCheck(actionIndex),
+                            // CPPONLY:                attributes.getLineNoBoundsCheck(actionIndex)
+                            // CPPONLY:        );
+                            // CPPONLY:    }
+                            // CPPONLY:    appendToCurrentNodeAndPushFormElementMayFoster(formAttrs);
+                            // CPPONLY:    appendVoidElementToCurrentMayFoster(
+                            // CPPONLY:            ElementName.HR,
+                            // CPPONLY:            HtmlAttributes.EMPTY_ATTRIBUTES);
+                            // CPPONLY:    appendToCurrentNodeAndPushElementMayFoster(
+                            // CPPONLY:            ElementName.LABEL,
+                            // CPPONLY:            HtmlAttributes.EMPTY_ATTRIBUTES);
+                            // CPPONLY:    int promptIndex = attributes.getIndex(AttributeName.PROMPT);
+                            // CPPONLY:    if (promptIndex > -1) {
+                            // CPPONLY:        @Auto char[] prompt = Portability.newCharArrayFromString(attributes.getValueNoBoundsCheck(promptIndex));
+                            // CPPONLY:        appendCharacters(stack[currentPtr].node,
+                            // CPPONLY:                prompt, 0, prompt.length);
+                            // CPPONLY:    } else {
+                            // CPPONLY:        appendIsindexPrompt(stack[currentPtr].node);
+                            // CPPONLY:    }
+                            // CPPONLY:    HtmlAttributes inputAttributes = new HtmlAttributes(
+                            // CPPONLY:            0);
+                            // CPPONLY:    inputAttributes.addAttribute(
+                            // CPPONLY:            AttributeName.NAME,
+                            // CPPONLY:            Portability.newStringFromLiteral("isindex"),
+                            // CPPONLY:            tokenizer.getLineNumber()
+                            // CPPONLY:    );
+                            // CPPONLY:    for (int i = 0; i < attributes.getLength(); i++) {
+                            // CPPONLY:        @Local String attributeQName = attributes.getLocalNameNoBoundsCheck(i);
+                            // CPPONLY:        if ("name" == attributeQName
+                            // CPPONLY:                || "prompt" == attributeQName) {
+                            // CPPONLY:            attributes.releaseValue(i);
+                            // CPPONLY:        } else if ("action" != attributeQName) {
+                            // CPPONLY:            inputAttributes.AddAttributeWithLocal(
+                            // CPPONLY:                    attributeQName,
+                            // CPPONLY:                    attributes.getValueNoBoundsCheck(i),
+                            // CPPONLY:                    attributes.getLineNoBoundsCheck(i)
+                            // CPPONLY:            );
+                            // CPPONLY:        }
+                            // CPPONLY:    }
+                            // CPPONLY:    attributes.clearWithoutReleasingContents();
+                            // CPPONLY:    appendVoidElementToCurrentMayFoster(
+                            // CPPONLY:            "input",
+                            // CPPONLY:            inputAttributes, formPointer);
+                            // CPPONLY:    pop(); // label
+                            // CPPONLY:    appendVoidElementToCurrentMayFoster(
+                            // CPPONLY:            ElementName.HR,
+                            // CPPONLY:            HtmlAttributes.EMPTY_ATTRIBUTES);
+                            // CPPONLY:    pop(); // form
+                            // CPPONLY:
+                            // CPPONLY:    if (!isTemplateContents()) {
+                            // CPPONLY:        formPointer = null;
+                            // CPPONLY:    }
+                            // CPPONLY:
+                            // CPPONLY:    selfClosing = false;
+                            // CPPONLY:    // Don't delete attributes, they are deleted
+                            // CPPONLY:    // later
+                            // CPPONLY:    break starttagloop;
                             case TEXTAREA:
                                 appendToCurrentNodeAndPushElementMayFoster(
                                         elementName,
@@ -3837,7 +3826,7 @@ public abstract class TreeBuilder<T> implements TokenHandler,
                         case INPUT:
                         case KEYGEN: // XXX??
                         case HR:
-                        case ISINDEX:
+                        // CPPONLY: case ISINDEX:
                         case IFRAME:
                         case NOEMBED: // XXX???
                         case NOFRAMES: // XXX??
@@ -5681,7 +5670,7 @@ public abstract class TreeBuilder<T> implements TokenHandler,
     protected abstract void appendCharacters(T parent, @NoLength char[] buf,
             int start, int length) throws SAXException;
 
-    protected abstract void appendIsindexPrompt(T parent) throws SAXException;
+    // CPPONLY: protected abstract void appendIsindexPrompt(T parent) throws SAXException;
 
     protected abstract void appendComment(T parent, @NoLength char[] buf,
             int start, int length) throws SAXException;
@@ -6377,9 +6366,9 @@ public abstract class TreeBuilder<T> implements TokenHandler,
         err("Saw a start tag \u201Cimage\u201D.");
     }
 
-    private void errIsindex() throws SAXException {
-        err("\u201Cisindex\u201D seen.");
-    }
+    // CPPONLY: private void errIsindex() throws SAXException {
+    // CPPONLY:     err("\u201Cisindex\u201D seen.");
+    // CPPONLY: }
 
     private void errFooSeenWhenFooOpen(@Local String name) throws SAXException {
         if (errorHandler == null) {
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXStreamer.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXStreamer.java
index 07ff5da4a..d2dc60bdb 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXStreamer.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXStreamer.java
@@ -23,26 +23,24 @@
 
 package nu.validator.htmlparser.sax;
 
-import nu.validator.htmlparser.impl.HtmlAttributes;
-import nu.validator.htmlparser.impl.TreeBuilder;
-
 import org.xml.sax.Attributes;
 import org.xml.sax.ContentHandler;
 import org.xml.sax.SAXException;
 import org.xml.sax.SAXParseException;
 import org.xml.sax.ext.LexicalHandler;
 
-class SAXStreamer extends TreeBuilder<Attributes>{
+import nu.validator.htmlparser.impl.HtmlAttributes;
+import nu.validator.htmlparser.impl.TreeBuilder;
 
-    private static final char[] ISINDEX_PROMPT = "This is a searchable index. Enter search keywords: ".toCharArray();
+class SAXStreamer extends TreeBuilder<Attributes>{
 
     private ContentHandler contentHandler = null;
     private LexicalHandler lexicalHandler = null;
-    
+
     SAXStreamer() {
         super();
     }
-    
+
     @Override
     protected void addAttributesToElement(Attributes element, HtmlAttributes attributes) throws SAXException {
         Attributes existingAttrs = element;
@@ -59,14 +57,6 @@ class SAXStreamer extends TreeBuilder<Attributes>{
         contentHandler.characters(buf, start, length);
     }
 
-    /**
-     * @see nu.validator.htmlparser.impl.TreeBuilder#appendIsindexPrompt(java.lang.Object)
-     */
-    @Override protected void appendIsindexPrompt(Attributes parent)
-            throws SAXException {
-        contentHandler.characters(ISINDEX_PROMPT, 0, ISINDEX_PROMPT.length);
-    }
-
     @Override
     protected void appendChildrenToNewParent(Attributes oldParent, Attributes newParent) throws SAXException {
         fatal();
diff --git a/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXTreeBuilder.java b/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXTreeBuilder.java
index ef51d2a51..3e099b579 100644
--- a/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXTreeBuilder.java
+++ b/parser/html/java/htmlparser/src/nu/validator/htmlparser/sax/SAXTreeBuilder.java
@@ -23,6 +23,8 @@
 
 package nu.validator.htmlparser.sax;
 
+import org.xml.sax.SAXException;
+
 import nu.validator.htmlparser.impl.HtmlAttributes;
 import nu.validator.htmlparser.impl.TreeBuilder;
 import nu.validator.saxtree.Characters;
@@ -34,12 +36,8 @@ import nu.validator.saxtree.Element;
 import nu.validator.saxtree.Node;
 import nu.validator.saxtree.ParentNode;
 
-import org.xml.sax.SAXException;
-
 class SAXTreeBuilder extends TreeBuilder<Element> {
 
-    private static final char[] ISINDEX_PROMPT = "This is a searchable index. Enter search keywords: ".toCharArray();
-
     private Document document;
 
     private Node cachedTable = null;
@@ -65,14 +63,6 @@ class SAXTreeBuilder extends TreeBuilder<Element> {
         parent.appendChild(new Characters(tokenizer, buf, start, length));
     }
 
-    /**
-     * @see nu.validator.htmlparser.impl.TreeBuilder#appendIsindexPrompt(java.lang.Object)
-     */
-    @Override protected void appendIsindexPrompt(Element parent)
-            throws SAXException {
-        parent.appendChild(new Characters(tokenizer, ISINDEX_PROMPT, 0, ISINDEX_PROMPT.length));
-    }
-
     @Override
     protected boolean hasChildren(Element element) {
         return element.getFirstChild() != null;
diff --git a/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/CppVisitor.java b/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/CppVisitor.java
index af042ce96..9a2a85795 100644
--- a/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/CppVisitor.java
+++ b/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/CppVisitor.java
@@ -448,13 +448,6 @@ public class CppVisitor extends AnnotationHelperVisitor<LocalSymbolTable> {
         printer.print("#include \"");
         printer.print(className);
         printer.printLn(".h\"");
-        if ("AttributeName".equals(javaClassName)) {
-            printer.print("#include \"");
-            printer.print(cppTypes.classPrefix());
-            printer.print("Releasable");
-            printer.print(javaClassName);
-            printer.printLn(".h\"");
-        }
         printer.printLn();
     }
 
@@ -1386,18 +1379,12 @@ public class CppVisitor extends AnnotationHelperVisitor<LocalSymbolTable> {
 
         suppressPointer = true;
         printTypeArgs(n.getTypeArgs(), arg);
-        if ("createAttributeName".equals(currentMethod)) {
-            printer.print(cppTypes.classPrefix());
-            printer.print("Releasable");
-            printer.print(n.getType().getName());
-        } else {
-            n.getType().accept(this, arg);
-        }
+        n.getType().accept(this, arg);
         suppressPointer = false;
 
         if ("AttributeName".equals(n.getType().getName())) {
             List<Expression> args = n.getArgs();
-            while (args.size() > 3) {
+            while (args != null && args.size() > 3) {
                 args.remove(3);
             }
         }
diff --git a/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/Main.java b/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/Main.java
index 53347bd42..09602ccba 100644
--- a/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/Main.java
+++ b/parser/html/java/htmlparser/translator-src/nu/validator/htmlparser/cpptranslate/Main.java
@@ -37,19 +37,18 @@
 
 package nu.validator.htmlparser.cpptranslate;
 
-import japa.parser.JavaParser;
-import japa.parser.ParseException;
-import japa.parser.ast.CompilationUnit;
-
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
-import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.io.UnsupportedEncodingException;
 
+import japa.parser.JavaParser;
+import japa.parser.ParseException;
+import japa.parser.ast.CompilationUnit;
+
 public class Main {
 
     static final String[] H_LIST = {
@@ -58,7 +57,6 @@ public class Main {
         "MetaScanner",
         "AttributeName",
         "ElementName",
-        "HtmlAttributes",
         "StackNode",
         "UTF16Buffer",
         "StateSnapshot",
@@ -71,7 +69,6 @@ public class Main {
         "MetaScanner",
         "AttributeName",
         "ElementName",
-        "HtmlAttributes",
         "StackNode",
         "UTF16Buffer",
         "StateSnapshot",