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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.xerces.dom;
import java.util.ArrayList;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* The Document interface represents the entire HTML or XML document.
* Conceptually, it is the root of the document tree, and provides the
* primary access to the document's data.
*
* Since elements, text nodes, comments, processing instructions,
* etc. cannot exist outside the context of a Document, the Document
* interface also contains the factory methods needed to create these
* objects. The Node objects created have a ownerDocument attribute
* which associates them with the Document within whose context they
* were created.
*
* @xerces.internal
*
* @version $Id: DeferredDocumentImpl.java 965320 2010-07-18 23:25:54Z mrglavas $
* @since PR-DOM-Level-1-19980818.
*/
public class DeferredDocumentImpl
extends DocumentImpl
implements DeferredNode {
//
// Constants
//
/** Serialization version. */
static final long serialVersionUID = 5186323580749626857L;
// debugging
/** To include code for printing the ref count tables. */
private static final boolean DEBUG_PRINT_REF_COUNTS = false;
/** To include code for printing the internal tables. */
private static final boolean DEBUG_PRINT_TABLES = false;
/** To debug identifiers set to true and recompile. */
private static final boolean DEBUG_IDS = false;
// protected
/** Chunk shift. */
protected static final int CHUNK_SHIFT = 11; // 2^11 = 2k
/** Chunk size. */
protected static final int CHUNK_SIZE = (1 << CHUNK_SHIFT);
/** Chunk mask. */
protected static final int CHUNK_MASK = CHUNK_SIZE - 1;
/** Initial chunk size. */
protected static final int INITIAL_CHUNK_COUNT = (1 << (16 - CHUNK_SHIFT)); // 2^16 = 64k
//
// Data
//
// lazy-eval information
// To maximize memory consumption the actual semantic of these fields vary
// depending on the node type.
/** Node count. */
protected transient int fNodeCount = 0;
/** Node types. */
protected transient int fNodeType[][];
/** Node names. */
protected transient Object fNodeName[][];
/** Node values. */
protected transient Object fNodeValue[][];
/** Node parents. */
protected transient int fNodeParent[][];
/** Node first children. */
protected transient int fNodeLastChild[][];
/** Node prev siblings. */
protected transient int fNodePrevSib[][];
/** Node namespace URI. */
protected transient Object fNodeURI[][];
/** Extra data. */
protected transient int fNodeExtra[][];
/** Identifier count. */
protected transient int fIdCount;
/** Identifier name indexes. */
protected transient String fIdName[];
/** Identifier element indexes. */
protected transient int fIdElement[];
/** DOM2: For namespace support in the deferred case.
*/
// Implementation Note: The deferred element and attribute must know how to
// interpret the int representing the qname.
protected boolean fNamespacesEnabled = false;
//
// private data
//
private transient final StringBuffer fBufferStr = new StringBuffer();
private transient final ArrayList fStrChunks = new ArrayList();
//
// Constructors
//
/**
* NON-DOM: Actually creating a Document is outside the DOM's spec,
* since it has to operate in terms of a particular implementation.
*/
public DeferredDocumentImpl() {
this(false);
} // ()
/**
* NON-DOM: Actually creating a Document is outside the DOM's spec,
* since it has to operate in terms of a particular implementation.
*/
public DeferredDocumentImpl(boolean namespacesEnabled) {
this(namespacesEnabled, false);
} // (boolean)
/** Experimental constructor. */
public DeferredDocumentImpl(boolean namespaces, boolean grammarAccess) {
super(grammarAccess);
needsSyncData(true);
needsSyncChildren(true);
fNamespacesEnabled = namespaces;
} // (boolean,boolean)
//
// Public methods
//
/**
* Retrieve information describing the abilities of this particular
* DOM implementation. Intended to support applications that may be
* using DOMs retrieved from several different sources, potentially
* with different underlying representations.
*/
public DOMImplementation getImplementation() {
// Currently implemented as a singleton, since it's hardcoded
// information anyway.
return DeferredDOMImplementationImpl.getDOMImplementation();
}
/** Returns the cached parser.getNamespaces() value.*/
boolean getNamespacesEnabled() {
return fNamespacesEnabled;
}
void setNamespacesEnabled(boolean enable) {
fNamespacesEnabled = enable;
}
// internal factory methods
/** Creates a document node in the table. */
public int createDeferredDocument() {
int nodeIndex = createNode(Node.DOCUMENT_NODE);
return nodeIndex;
}
/** Creates a doctype. */
public int createDeferredDocumentType(String rootElementName,
String publicId, String systemId) {
// create node
int nodeIndex = createNode(Node.DOCUMENT_TYPE_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
// save name, public id, system id
setChunkValue(fNodeName, rootElementName, chunk, index);
setChunkValue(fNodeValue, publicId, chunk, index);
setChunkValue(fNodeURI, systemId, chunk, index);
// return node index
return nodeIndex;
} // createDeferredDocumentType(String,String,String):int
public void setInternalSubset(int doctypeIndex, String subset) {
int chunk = doctypeIndex >> CHUNK_SHIFT;
int index = doctypeIndex & CHUNK_MASK;
// create extra data node to store internal subset
int extraDataIndex = createNode(Node.DOCUMENT_TYPE_NODE);
int echunk = extraDataIndex >> CHUNK_SHIFT;
int eindex = extraDataIndex & CHUNK_MASK;
setChunkIndex(fNodeExtra, extraDataIndex, chunk, index);
setChunkValue(fNodeValue, subset, echunk, eindex);
}
/** Creates a notation in the table. */
public int createDeferredNotation(String notationName,
String publicId, String systemId, String baseURI) {
// create node
int nodeIndex = createNode(Node.NOTATION_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
// create extra data node
int extraDataIndex = createNode(Node.NOTATION_NODE);
int echunk = extraDataIndex >> CHUNK_SHIFT;
int eindex = extraDataIndex & CHUNK_MASK;
// save name, public id, system id, and notation name
setChunkValue(fNodeName, notationName, chunk, index);
setChunkValue(fNodeValue, publicId, chunk, index);
setChunkValue(fNodeURI, systemId, chunk, index);
// in extra data node set baseURI value
setChunkIndex(fNodeExtra, extraDataIndex, chunk, index);
setChunkValue(fNodeName, baseURI, echunk, eindex);
// return node index
return nodeIndex;
} // createDeferredNotation(String,String,String):int
/** Creates an entity in the table. */
public int createDeferredEntity(String entityName, String publicId,
String systemId, String notationName,
String baseURI) {
// create node
int nodeIndex = createNode(Node.ENTITY_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
// create extra data node
int extraDataIndex = createNode(Node.ENTITY_NODE);
int echunk = extraDataIndex >> CHUNK_SHIFT;
int eindex = extraDataIndex & CHUNK_MASK;
// save name, public id, system id, and notation name
setChunkValue(fNodeName, entityName, chunk, index);
setChunkValue(fNodeValue, publicId, chunk, index);
setChunkValue(fNodeURI, systemId, chunk, index);
setChunkIndex(fNodeExtra, extraDataIndex, chunk, index);
// set other values in the extra chunk
// notation
setChunkValue(fNodeName, notationName, echunk, eindex);
// version L3
setChunkValue(fNodeValue, null, echunk, eindex);
// encoding L3
setChunkValue(fNodeURI, null, echunk, eindex);
int extraDataIndex2 = createNode(Node.ENTITY_NODE);
int echunk2 = extraDataIndex2 >> CHUNK_SHIFT;
int eindex2 = extraDataIndex2 & CHUNK_MASK;
setChunkIndex(fNodeExtra, extraDataIndex2, echunk, eindex);
// baseURI
setChunkValue(fNodeName, baseURI, echunk2, eindex2);
// return node index
return nodeIndex;
} // createDeferredEntity(String,String,String,String):int
public String getDeferredEntityBaseURI (int entityIndex){
if (entityIndex != -1) {
int extraDataIndex = getNodeExtra(entityIndex, false);
extraDataIndex = getNodeExtra(extraDataIndex, false);
return getNodeName (extraDataIndex, false);
}
return null;
}
// DOM Level 3: setting encoding and version
public void setEntityInfo(int currentEntityDecl,
String version, String encoding){
int eNodeIndex = getNodeExtra(currentEntityDecl, false);
if (eNodeIndex !=-1) {
int echunk = eNodeIndex >> CHUNK_SHIFT;
int eindex = eNodeIndex & CHUNK_MASK;
setChunkValue(fNodeValue, version, echunk, eindex);
setChunkValue(fNodeURI, encoding, echunk, eindex);
}
}
// DOM Level 3: sets element TypeInfo
public void setTypeInfo(int elementNodeIndex, Object type) {
int elementChunk = elementNodeIndex >> CHUNK_SHIFT;
int elementIndex = elementNodeIndex & CHUNK_MASK;
setChunkValue(fNodeValue, type, elementChunk, elementIndex);
}
/**
* DOM Internal
*
* An attribute specifying the actual encoding of this document. This is
* null otherwise.
*
This attribute represents the property [character encoding scheme]
* defined in .
*/
public void setInputEncoding(int currentEntityDecl, String value){
// get first extra data chunk
int nodeIndex = getNodeExtra(currentEntityDecl, false);
// get second extra data chunk
int extraDataIndex = getNodeExtra(nodeIndex, false);
int echunk = extraDataIndex >> CHUNK_SHIFT;
int eindex = extraDataIndex & CHUNK_MASK;
setChunkValue(fNodeValue, value, echunk, eindex);
}
/** Creates an entity reference node in the table. */
public int createDeferredEntityReference(String name, String baseURI) {
// create node
int nodeIndex = createNode(Node.ENTITY_REFERENCE_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, name, chunk, index);
setChunkValue(fNodeValue, baseURI, chunk, index);
// return node index
return nodeIndex;
} // createDeferredEntityReference(String):int
/**
* Creates an element node with a URI in the table and type information.
* @deprecated
*/
public int createDeferredElement(String elementURI, String elementName,
Object type) {
// create node
int elementNodeIndex = createNode(Node.ELEMENT_NODE);
int elementChunk = elementNodeIndex >> CHUNK_SHIFT;
int elementIndex = elementNodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, elementName, elementChunk, elementIndex);
setChunkValue(fNodeURI, elementURI, elementChunk, elementIndex);
setChunkValue(fNodeValue, type, elementChunk, elementIndex);
// return node index
return elementNodeIndex;
} // createDeferredElement(String,String,Object):int
/**
* Creates an element node in the table.
* @deprecated
*/
public int createDeferredElement(String elementName) {
return createDeferredElement(null, elementName);
}
/**
* Creates an element node with a URI in the table.
*/
public int createDeferredElement(String elementURI, String elementName) {
// create node
int elementNodeIndex = createNode(Node.ELEMENT_NODE);
int elementChunk = elementNodeIndex >> CHUNK_SHIFT;
int elementIndex = elementNodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, elementName, elementChunk, elementIndex);
setChunkValue(fNodeURI, elementURI, elementChunk, elementIndex);
// return node index
return elementNodeIndex;
} // createDeferredElement(String,String):int
/**
* This method is used by the DOMParser to create attributes.
* @param elementNodeIndex
* @param attrName
* @param attrURI
* @param attrValue
* @param specified
* @param id
* @param type
* @return int
*/
public int setDeferredAttribute(int elementNodeIndex,
String attrName,
String attrURI,
String attrValue,
boolean specified,
boolean id,
Object type) {
// create attribute
int attrNodeIndex = createDeferredAttribute(attrName, attrURI, attrValue, specified);
int attrChunk = attrNodeIndex >> CHUNK_SHIFT;
int attrIndex = attrNodeIndex & CHUNK_MASK;
// set attribute's parent to element
setChunkIndex(fNodeParent, elementNodeIndex, attrChunk, attrIndex);
int elementChunk = elementNodeIndex >> CHUNK_SHIFT;
int elementIndex = elementNodeIndex & CHUNK_MASK;
// get element's last attribute
int lastAttrNodeIndex = getChunkIndex(fNodeExtra, elementChunk, elementIndex);
if (lastAttrNodeIndex != 0) {
// add link from new attribute to last attribute
setChunkIndex(fNodePrevSib, lastAttrNodeIndex, attrChunk, attrIndex);
}
// add link from element to new last attribute
setChunkIndex(fNodeExtra, attrNodeIndex, elementChunk, elementIndex);
int extra = getChunkIndex(fNodeExtra, attrChunk, attrIndex);
if (id) {
extra = extra | ID;
setChunkIndex(fNodeExtra, extra, attrChunk, attrIndex);
String value = getChunkValue(fNodeValue, attrChunk, attrIndex);
putIdentifier(value, elementNodeIndex);
}
// store type information
if (type != null) {
int extraDataIndex = createNode(DeferredNode.TYPE_NODE);
int echunk = extraDataIndex >> CHUNK_SHIFT;
int eindex = extraDataIndex & CHUNK_MASK;
setChunkIndex(fNodeLastChild, extraDataIndex, attrChunk, attrIndex);
setChunkValue(fNodeValue, type, echunk, eindex);
}
// return node index
return attrNodeIndex;
}
/**
* Sets an attribute on an element node.
* @deprecated
*/
public int setDeferredAttribute(int elementNodeIndex,
String attrName, String attrURI,
String attrValue, boolean specified) {
// create attribute
int attrNodeIndex = createDeferredAttribute(attrName, attrURI,
attrValue, specified);
int attrChunk = attrNodeIndex >> CHUNK_SHIFT;
int attrIndex = attrNodeIndex & CHUNK_MASK;
// set attribute's parent to element
setChunkIndex(fNodeParent, elementNodeIndex, attrChunk, attrIndex);
int elementChunk = elementNodeIndex >> CHUNK_SHIFT;
int elementIndex = elementNodeIndex & CHUNK_MASK;
// get element's last attribute
int lastAttrNodeIndex = getChunkIndex(fNodeExtra,
elementChunk, elementIndex);
if (lastAttrNodeIndex != 0) {
// add link from new attribute to last attribute
setChunkIndex(fNodePrevSib, lastAttrNodeIndex,
attrChunk, attrIndex);
}
// add link from element to new last attribute
setChunkIndex(fNodeExtra, attrNodeIndex,
elementChunk, elementIndex);
// return node index
return attrNodeIndex;
} // setDeferredAttribute(int,String,String,String,boolean):int
/** Creates an attribute in the table. */
public int createDeferredAttribute(String attrName, String attrValue,
boolean specified) {
return createDeferredAttribute(attrName, null, attrValue, specified);
}
/** Creates an attribute with a URI in the table. */
public int createDeferredAttribute(String attrName, String attrURI,
String attrValue, boolean specified) {
// create node
int nodeIndex = createNode(NodeImpl.ATTRIBUTE_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, attrName, chunk, index);
setChunkValue(fNodeURI, attrURI, chunk, index);
setChunkValue(fNodeValue, attrValue, chunk, index);
int extra = specified ? SPECIFIED : 0;
setChunkIndex(fNodeExtra, extra, chunk, index);
// return node index
return nodeIndex;
} // createDeferredAttribute(String,String,String,boolean):int
/** Creates an element definition in the table.*/
public int createDeferredElementDefinition(String elementName) {
// create node
int nodeIndex = createNode(NodeImpl.ELEMENT_DEFINITION_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, elementName, chunk, index);
// return node index
return nodeIndex;
} // createDeferredElementDefinition(String):int
/** Creates a text node in the table. */
public int createDeferredTextNode(String data,
boolean ignorableWhitespace) {
// create node
int nodeIndex = createNode(Node.TEXT_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeValue, data, chunk, index);
// use extra to store ignorableWhitespace info
setChunkIndex(fNodeExtra, ignorableWhitespace ? 1 : 0, chunk, index);
// return node index
return nodeIndex;
} // createDeferredTextNode(String,boolean):int
/** Creates a CDATA section node in the table. */
public int createDeferredCDATASection(String data) {
// create node
int nodeIndex = createNode(Node.CDATA_SECTION_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeValue, data, chunk, index);
// return node index
return nodeIndex;
} // createDeferredCDATASection(String):int
/** Creates a processing instruction node in the table. */
public int createDeferredProcessingInstruction(String target,
String data) {
// create node
int nodeIndex = createNode(Node.PROCESSING_INSTRUCTION_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeName, target, chunk, index);
setChunkValue(fNodeValue, data, chunk, index);
// return node index
return nodeIndex;
} // createDeferredProcessingInstruction(String,String):int
/** Creates a comment node in the table. */
public int createDeferredComment(String data) {
// create node
int nodeIndex = createNode(Node.COMMENT_NODE);
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
setChunkValue(fNodeValue, data, chunk, index);
// return node index
return nodeIndex;
} // createDeferredComment(String):int
/** Creates a clone of the specified node. */
public int cloneNode(int nodeIndex, boolean deep) {
// clone immediate node
int nchunk = nodeIndex >> CHUNK_SHIFT;
int nindex = nodeIndex & CHUNK_MASK;
int nodeType = fNodeType[nchunk][nindex];
int cloneIndex = createNode((short)nodeType);
int cchunk = cloneIndex >> CHUNK_SHIFT;
int cindex = cloneIndex & CHUNK_MASK;
setChunkValue(fNodeName, fNodeName[nchunk][nindex], cchunk, cindex);
setChunkValue(fNodeValue, fNodeValue[nchunk][nindex], cchunk, cindex);
setChunkValue(fNodeURI, fNodeURI[nchunk][nindex], cchunk, cindex);
int extraIndex = fNodeExtra[nchunk][nindex];
if (extraIndex != -1) {
if (nodeType != Node.ATTRIBUTE_NODE && nodeType != Node.TEXT_NODE) {
extraIndex = cloneNode(extraIndex, false);
}
setChunkIndex(fNodeExtra, extraIndex, cchunk, cindex);
}
// clone and attach children
if (deep) {
int prevIndex = -1;
int childIndex = getLastChild(nodeIndex, false);
while (childIndex != -1) {
int clonedChildIndex = cloneNode(childIndex, deep);
insertBefore(cloneIndex, clonedChildIndex, prevIndex);
prevIndex = clonedChildIndex;
childIndex = getRealPrevSibling(childIndex, false);
}
}
// return cloned node index
return cloneIndex;
} // cloneNode(int,boolean):int
/** Appends a child to the specified parent in the table. */
public void appendChild(int parentIndex, int childIndex) {
// append parent index
int pchunk = parentIndex >> CHUNK_SHIFT;
int pindex = parentIndex & CHUNK_MASK;
int cchunk = childIndex >> CHUNK_SHIFT;
int cindex = childIndex & CHUNK_MASK;
setChunkIndex(fNodeParent, parentIndex, cchunk, cindex);
// set previous sibling of new child
int olast = getChunkIndex(fNodeLastChild, pchunk, pindex);
setChunkIndex(fNodePrevSib, olast, cchunk, cindex);
// update parent's last child
setChunkIndex(fNodeLastChild, childIndex, pchunk, pindex);
} // appendChild(int,int)
/** Adds an attribute node to the specified element. */
public int setAttributeNode(int elemIndex, int attrIndex) {
int echunk = elemIndex >> CHUNK_SHIFT;
int eindex = elemIndex & CHUNK_MASK;
int achunk = attrIndex >> CHUNK_SHIFT;
int aindex = attrIndex & CHUNK_MASK;
// see if this attribute is already here
String attrName = getChunkValue(fNodeName, achunk, aindex);
int oldAttrIndex = getChunkIndex(fNodeExtra, echunk, eindex);
int nextIndex = -1;
int oachunk = -1;
int oaindex = -1;
while (oldAttrIndex != -1) {
oachunk = oldAttrIndex >> CHUNK_SHIFT;
oaindex = oldAttrIndex & CHUNK_MASK;
String oldAttrName = getChunkValue(fNodeName, oachunk, oaindex);
if (oldAttrName.equals(attrName)) {
break;
}
nextIndex = oldAttrIndex;
oldAttrIndex = getChunkIndex(fNodePrevSib, oachunk, oaindex);
}
// remove old attribute
if (oldAttrIndex != -1) {
// patch links
int prevIndex = getChunkIndex(fNodePrevSib, oachunk, oaindex);
if (nextIndex == -1) {
setChunkIndex(fNodeExtra, prevIndex, echunk, eindex);
}
else {
int pchunk = nextIndex >> CHUNK_SHIFT;
int pindex = nextIndex & CHUNK_MASK;
setChunkIndex(fNodePrevSib, prevIndex, pchunk, pindex);
}
// remove connections to siblings
clearChunkIndex(fNodeType, oachunk, oaindex);
clearChunkValue(fNodeName, oachunk, oaindex);
clearChunkValue(fNodeValue, oachunk, oaindex);
clearChunkIndex(fNodeParent, oachunk, oaindex);
clearChunkIndex(fNodePrevSib, oachunk, oaindex);
int attrTextIndex =
clearChunkIndex(fNodeLastChild, oachunk, oaindex);
int atchunk = attrTextIndex >> CHUNK_SHIFT;
int atindex = attrTextIndex & CHUNK_MASK;
clearChunkIndex(fNodeType, atchunk, atindex);
clearChunkValue(fNodeValue, atchunk, atindex);
clearChunkIndex(fNodeParent, atchunk, atindex);
clearChunkIndex(fNodeLastChild, atchunk, atindex);
}
// add new attribute
int prevIndex = getChunkIndex(fNodeExtra, echunk, eindex);
setChunkIndex(fNodeExtra, attrIndex, echunk, eindex);
setChunkIndex(fNodePrevSib, prevIndex, achunk, aindex);
// return
return oldAttrIndex;
} // setAttributeNode(int,int):int
/** Adds an attribute node to the specified element. */
public void setIdAttributeNode(int elemIndex, int attrIndex) {
int chunk = attrIndex >> CHUNK_SHIFT;
int index = attrIndex & CHUNK_MASK;
int extra = getChunkIndex(fNodeExtra, chunk, index);
extra = extra | ID;
setChunkIndex(fNodeExtra, extra, chunk, index);
String value = getChunkValue(fNodeValue, chunk, index);
putIdentifier(value, elemIndex);
}
/** Sets type of attribute */
public void setIdAttribute(int attrIndex) {
int chunk = attrIndex >> CHUNK_SHIFT;
int index = attrIndex & CHUNK_MASK;
int extra = getChunkIndex(fNodeExtra, chunk, index);
extra = extra | ID;
setChunkIndex(fNodeExtra, extra, chunk, index);
}
/** Inserts a child before the specified node in the table. */
public int insertBefore(int parentIndex, int newChildIndex, int refChildIndex) {
if (refChildIndex == -1) {
appendChild(parentIndex, newChildIndex);
return newChildIndex;
}
int nchunk = newChildIndex >> CHUNK_SHIFT;
int nindex = newChildIndex & CHUNK_MASK;
int rchunk = refChildIndex >> CHUNK_SHIFT;
int rindex = refChildIndex & CHUNK_MASK;
int previousIndex = getChunkIndex(fNodePrevSib, rchunk, rindex);
setChunkIndex(fNodePrevSib, newChildIndex, rchunk, rindex);
setChunkIndex(fNodePrevSib, previousIndex, nchunk, nindex);
return newChildIndex;
} // insertBefore(int,int,int):int
/** Sets the last child of the parentIndex to childIndex. */
public void setAsLastChild(int parentIndex, int childIndex) {
int pchunk = parentIndex >> CHUNK_SHIFT;
int pindex = parentIndex & CHUNK_MASK;
setChunkIndex(fNodeLastChild, childIndex, pchunk, pindex);
} // setAsLastChild(int,int)
/**
* Returns the parent node of the given node.
* Calling this method does not free the parent index.
*/
public int getParentNode(int nodeIndex) {
return getParentNode(nodeIndex, false);
}
/**
* Returns the parent node of the given node.
* @param free True to free parent node.
*/
public int getParentNode(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkIndex(fNodeParent, chunk, index)
: getChunkIndex(fNodeParent, chunk, index);
} // getParentNode(int):int
/** Returns the last child of the given node. */
public int getLastChild(int nodeIndex) {
return getLastChild(nodeIndex, true);
}
/**
* Returns the last child of the given node.
* @param free True to free child index.
*/
public int getLastChild(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkIndex(fNodeLastChild, chunk, index)
: getChunkIndex(fNodeLastChild, chunk, index);
} // getLastChild(int,boolean):int
/**
* Returns the prev sibling of the given node.
* This is post-normalization of Text Nodes.
*/
public int getPrevSibling(int nodeIndex) {
return getPrevSibling(nodeIndex, true);
}
/**
* Returns the prev sibling of the given node.
* @param free True to free sibling index.
*/
public int getPrevSibling(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
int type = getChunkIndex(fNodeType, chunk, index);
if (type == Node.TEXT_NODE) {
do {
nodeIndex = getChunkIndex(fNodePrevSib, chunk, index);
if (nodeIndex == -1) {
break;
}
chunk = nodeIndex >> CHUNK_SHIFT;
index = nodeIndex & CHUNK_MASK;
type = getChunkIndex(fNodeType, chunk, index);
} while (type == Node.TEXT_NODE);
}
else {
nodeIndex = getChunkIndex(fNodePrevSib, chunk, index);
}
return nodeIndex;
} // getPrevSibling(int,boolean):int
/**
* Returns the real prev sibling of the given node,
* directly from the data structures. Used by TextImpl#getNodeValue()
* to normalize values.
*/
public int getRealPrevSibling(int nodeIndex) {
return getRealPrevSibling(nodeIndex, true);
}
/**
* Returns the real prev sibling of the given node.
* @param free True to free sibling index.
*/
public int getRealPrevSibling(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkIndex(fNodePrevSib, chunk, index)
: getChunkIndex(fNodePrevSib, chunk, index);
} // getReadPrevSibling(int,boolean):int
/**
* Returns the index of the element definition in the table
* with the specified name index, or -1 if no such definition
* exists.
*/
public int lookupElementDefinition(String elementName) {
if (fNodeCount > 1) {
// find doctype
int docTypeIndex = -1;
int nchunk = 0;
int nindex = 0;
for (int index = getChunkIndex(fNodeLastChild, nchunk, nindex);
index != -1;
index = getChunkIndex(fNodePrevSib, nchunk, nindex)) {
nchunk = index >> CHUNK_SHIFT;
nindex = index & CHUNK_MASK;
if (getChunkIndex(fNodeType, nchunk, nindex) == Node.DOCUMENT_TYPE_NODE) {
docTypeIndex = index;
break;
}
}
// find element definition
if (docTypeIndex == -1) {
return -1;
}
nchunk = docTypeIndex >> CHUNK_SHIFT;
nindex = docTypeIndex & CHUNK_MASK;
for (int index = getChunkIndex(fNodeLastChild, nchunk, nindex);
index != -1;
index = getChunkIndex(fNodePrevSib, nchunk, nindex)) {
nchunk = index >> CHUNK_SHIFT;
nindex = index & CHUNK_MASK;
if (getChunkIndex(fNodeType, nchunk, nindex) ==
NodeImpl.ELEMENT_DEFINITION_NODE
&& getChunkValue(fNodeName, nchunk, nindex) == elementName) {
return index;
}
}
}
return -1;
} // lookupElementDefinition(String):int
/** Instantiates the requested node object. */
public DeferredNode getNodeObject(int nodeIndex) {
// is there anything to do?
if (nodeIndex == -1) {
return null;
}
// get node type
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
int type = getChunkIndex(fNodeType, chunk, index);
if (type != Node.TEXT_NODE && type != Node.CDATA_SECTION_NODE) {
clearChunkIndex(fNodeType, chunk, index);
}
// create new node
DeferredNode node = null;
switch (type) {
//
// Standard DOM node types
//
case Node.ATTRIBUTE_NODE: {
if (fNamespacesEnabled) {
node = new DeferredAttrNSImpl(this, nodeIndex);
} else {
node = new DeferredAttrImpl(this, nodeIndex);
}
break;
}
case Node.CDATA_SECTION_NODE: {
node = new DeferredCDATASectionImpl(this, nodeIndex);
break;
}
case Node.COMMENT_NODE: {
node = new DeferredCommentImpl(this, nodeIndex);
break;
}
// NOTE: Document fragments can never be "fast".
//
// The parser will never ask to create a document
// fragment during the parse. Document fragments
// are used by the application *after* the parse.
//
// case Node.DOCUMENT_FRAGMENT_NODE: { break; }
case Node.DOCUMENT_NODE: {
// this node is never "fast"
node = this;
break;
}
case Node.DOCUMENT_TYPE_NODE: {
node = new DeferredDocumentTypeImpl(this, nodeIndex);
// save the doctype node
docType = (DocumentTypeImpl)node;
break;
}
case Node.ELEMENT_NODE: {
if (DEBUG_IDS) {
System.out.println("getNodeObject(ELEMENT_NODE): "+nodeIndex);
}
// create node
if (fNamespacesEnabled) {
node = new DeferredElementNSImpl(this, nodeIndex);
} else {
node = new DeferredElementImpl(this, nodeIndex);
}
// check to see if this element needs to be
// registered for its ID attributes
if (fIdElement != null) {
int idIndex = binarySearch(fIdElement, 0,
fIdCount-1, nodeIndex);
while (idIndex != -1) {
if (DEBUG_IDS) {
System.out.println(" id index: "+idIndex);
System.out.println(" fIdName["+idIndex+
"]: "+fIdName[idIndex]);
}
// register ID
String name = fIdName[idIndex];
if (name != null) {
if (DEBUG_IDS) {
System.out.println(" name: "+name);
System.out.print("getNodeObject()#");
}
putIdentifier0(name, (Element)node);
fIdName[idIndex] = null;
}
// continue if there are more IDs for
// this element
if (idIndex + 1 < fIdCount &&
fIdElement[idIndex + 1] == nodeIndex) {
idIndex++;
}
else {
idIndex = -1;
}
}
}
break;
}
case Node.ENTITY_NODE: {
node = new DeferredEntityImpl(this, nodeIndex);
break;
}
case Node.ENTITY_REFERENCE_NODE: {
node = new DeferredEntityReferenceImpl(this, nodeIndex);
break;
}
case Node.NOTATION_NODE: {
node = new DeferredNotationImpl(this, nodeIndex);
break;
}
case Node.PROCESSING_INSTRUCTION_NODE: {
node = new DeferredProcessingInstructionImpl(this, nodeIndex);
break;
}
case Node.TEXT_NODE: {
node = new DeferredTextImpl(this, nodeIndex);
break;
}
//
// non-standard DOM node types
//
case NodeImpl.ELEMENT_DEFINITION_NODE: {
node = new DeferredElementDefinitionImpl(this, nodeIndex);
break;
}
default: {
throw new IllegalArgumentException("type: "+type);
}
} // switch node type
// store and return
if (node != null) {
return node;
}
// error
throw new IllegalArgumentException();
} // createNodeObject(int):Node
/** Returns the name of the given node. */
public String getNodeName(int nodeIndex) {
return getNodeName(nodeIndex, true);
} // getNodeNameString(int):String
/**
* Returns the name of the given node.
* @param free True to free the string index.
*/
public String getNodeName(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return null;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkValue(fNodeName, chunk, index)
: getChunkValue(fNodeName, chunk, index);
} // getNodeName(int,boolean):String
/** Returns the real value of the given node. */
public String getNodeValueString(int nodeIndex) {
return getNodeValueString(nodeIndex, true);
} // getNodeValueString(int):String
/**
* Returns the real value of the given node.
* @param free True to free the string index.
*/
public String getNodeValueString(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return null;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
String value = free ? clearChunkValue(fNodeValue, chunk, index)
: getChunkValue(fNodeValue, chunk, index);
if (value == null) {
return null;
}
int type = getChunkIndex(fNodeType, chunk, index);
if (type == Node.TEXT_NODE) {
int prevSib = getRealPrevSibling(nodeIndex);
if (prevSib != -1 &&
getNodeType(prevSib, false) == Node.TEXT_NODE) {
// append data that is stored in fNodeValue
// REVISIT: for text nodes it works differently than for CDATA
// nodes.
fStrChunks.add(value);
do {
// go in reverse order: find last child, then
// its previous sibling, etc
chunk = prevSib >> CHUNK_SHIFT;
index = prevSib & CHUNK_MASK;
value = getChunkValue(fNodeValue, chunk, index);
fStrChunks.add(value);
prevSib = getChunkIndex(fNodePrevSib, chunk, index);
if (prevSib == -1) {
break;
}
} while (getNodeType(prevSib, false) == Node.TEXT_NODE);
int chunkCount = fStrChunks.size();
// add to the buffer in the correct order.
for (int i = chunkCount - 1; i >= 0; i--) {
fBufferStr.append((String)fStrChunks.get(i));
}
value = fBufferStr.toString();
fStrChunks.clear();
fBufferStr.setLength(0);
return value;
}
}
else if (type == Node.CDATA_SECTION_NODE) {
// find if any other data stored in children
int child = getLastChild(nodeIndex, false);
if (child !=-1) {
// append data that is stored in fNodeValue
fBufferStr.append(value);
while (child !=-1) {
// go in reverse order: find last child, then
// its previous sibling, etc
chunk = child >> CHUNK_SHIFT;
index = child & CHUNK_MASK;
value = getChunkValue(fNodeValue, chunk, index);
fStrChunks.add(value);
child = getChunkIndex(fNodePrevSib, chunk, index);
}
// add to the buffer in the correct order.
for (int i=fStrChunks.size()-1; i>=0; i--) {
fBufferStr.append((String)fStrChunks.get(i));
}
value = fBufferStr.toString();
fStrChunks.clear();
fBufferStr.setLength(0);
return value;
}
}
return value;
} // getNodeValueString(int,boolean):String
/**
* Returns the value of the given node.
*/
public String getNodeValue(int nodeIndex) {
return getNodeValue(nodeIndex, true);
}
/**
* Clears the type info that is stored in the fNodeValue array
* @param nodeIndex
* @return Object - type information for the attribute/element node
*/
public Object getTypeInfo(int nodeIndex) {
if (nodeIndex == -1) {
return null;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
Object value = fNodeValue[chunk] != null ? fNodeValue[chunk][index] : null;
if (value != null) {
fNodeValue[chunk][index] = null;
RefCount c = (RefCount) fNodeValue[chunk][CHUNK_SIZE];
c.fCount--;
if (c.fCount == 0) {
fNodeValue[chunk] = null;
}
}
return value;
}
/**
* Returns the value of the given node.
* @param free True to free the value index.
*/
public String getNodeValue(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return null;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkValue(fNodeValue, chunk, index)
: getChunkValue(fNodeValue, chunk, index);
} // getNodeValue(int,boolean):String
/**
* Returns the extra info of the given node.
* Used by AttrImpl to store specified value (1 == true).
*/
public int getNodeExtra(int nodeIndex) {
return getNodeExtra(nodeIndex, true);
}
/**
* Returns the extra info of the given node.
* @param free True to free the value index.
*/
public int getNodeExtra(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkIndex(fNodeExtra, chunk, index)
: getChunkIndex(fNodeExtra, chunk, index);
} // getNodeExtra(int,boolean):int
/** Returns the type of the given node. */
public short getNodeType(int nodeIndex) {
return getNodeType(nodeIndex, true);
}
/**
* Returns the type of the given node.
* @param free True to free type index.
*/
public short getNodeType(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return -1;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? (short)clearChunkIndex(fNodeType, chunk, index)
: (short)getChunkIndex(fNodeType, chunk, index);
} // getNodeType(int):int
/** Returns the attribute value of the given name. */
public String getAttribute(int elemIndex, String name) {
if (elemIndex == -1 || name == null) {
return null;
}
int echunk = elemIndex >> CHUNK_SHIFT;
int eindex = elemIndex & CHUNK_MASK;
int attrIndex = getChunkIndex(fNodeExtra, echunk, eindex);
while (attrIndex != -1) {
int achunk = attrIndex >> CHUNK_SHIFT;
int aindex = attrIndex & CHUNK_MASK;
if (getChunkValue(fNodeName, achunk, aindex) == name) {
return getChunkValue(fNodeValue, achunk, aindex);
}
attrIndex = getChunkIndex(fNodePrevSib, achunk, aindex);
}
return null;
}
/** Returns the URI of the given node. */
public String getNodeURI(int nodeIndex) {
return getNodeURI(nodeIndex, true);
}
/**
* Returns the URI of the given node.
* @param free True to free URI index.
*/
public String getNodeURI(int nodeIndex, boolean free) {
if (nodeIndex == -1) {
return null;
}
int chunk = nodeIndex >> CHUNK_SHIFT;
int index = nodeIndex & CHUNK_MASK;
return free ? clearChunkValue(fNodeURI, chunk, index)
: getChunkValue(fNodeURI, chunk, index);
} // getNodeURI(int,int):String
// identifier maintenance
/** Registers an identifier name with a specified element node. */
public void putIdentifier(String name, int elementNodeIndex) {
if (DEBUG_IDS) {
System.out.println("putIdentifier(" + name + ", "
+ elementNodeIndex + ')' + " // " +
getChunkValue(fNodeName,
elementNodeIndex >> CHUNK_SHIFT,
elementNodeIndex & CHUNK_MASK));
}
// initialize arrays
if (fIdName == null) {
fIdName = new String[64];
fIdElement = new int[64];
}
// resize arrays
if (fIdCount == fIdName.length) {
String idName[] = new String[fIdCount * 2];
System.arraycopy(fIdName, 0, idName, 0, fIdCount);
fIdName = idName;
int idElement[] = new int[idName.length];
System.arraycopy(fIdElement, 0, idElement, 0, fIdCount);
fIdElement = idElement;
}
// store identifier
fIdName[fIdCount] = name;
fIdElement[fIdCount] = elementNodeIndex;
fIdCount++;
} // putIdentifier(String,int)
//
// DEBUG
//
/** Prints out the tables. */
public void print() {
if (DEBUG_PRINT_REF_COUNTS) {
System.out.print("num\t");
System.out.print("type\t");
System.out.print("name\t");
System.out.print("val\t");
System.out.print("par\t");
System.out.print("lch\t");
System.out.print("psib");
System.out.println();
for (int i = 0; i < fNodeType.length; i++) {
if (fNodeType[i] != null) {
// separator
System.out.print("--------");
System.out.print("--------");
System.out.print("--------");
System.out.print("--------");
System.out.print("--------");
System.out.print("--------");
System.out.print("--------");
System.out.println();
// ref count
System.out.print(i);
System.out.print('\t');
switch (fNodeType[i][CHUNK_SIZE]) {
case DocumentImpl.ELEMENT_DEFINITION_NODE: { System.out.print("EDef"); break; }
case Node.DOCUMENT_NODE: { System.out.print("Doc"); break; }
case Node.DOCUMENT_TYPE_NODE: { System.out.print("DType"); break; }
case Node.COMMENT_NODE: { System.out.print("Com"); break; }
case Node.PROCESSING_INSTRUCTION_NODE: { System.out.print("PI"); break; }
case Node.ELEMENT_NODE: { System.out.print("Elem"); break; }
case Node.ENTITY_NODE: { System.out.print("Ent"); break; }
case Node.ENTITY_REFERENCE_NODE: { System.out.print("ERef"); break; }
case Node.TEXT_NODE: { System.out.print("Text"); break; }
case Node.ATTRIBUTE_NODE: { System.out.print("Attr"); break; }
case DeferredNode.TYPE_NODE: { System.out.print("TypeInfo"); break; }
default: { System.out.print("?"+fNodeType[i][CHUNK_SIZE]); }
}
System.out.print('\t');
System.out.print(fNodeName[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodeValue[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodeURI[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodeParent[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodeLastChild[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodePrevSib[i][CHUNK_SIZE]);
System.out.print('\t');
System.out.print(fNodeExtra[i][CHUNK_SIZE]);
System.out.println();
}
}
}
if (DEBUG_PRINT_TABLES) {
// This assumes that the document is small
System.out.println("# start table");
for (int i = 0; i < fNodeCount; i++) {
int chunk = i >> CHUNK_SHIFT;
int index = i & CHUNK_MASK;
if (i % 10 == 0) {
System.out.print("num\t");
System.out.print("type\t");
System.out.print("name\t");
System.out.print("val\t");
System.out.print("uri\t");
System.out.print("par\t");
System.out.print("lch\t");
System.out.print("psib\t");
System.out.print("xtra");
System.out.println();
}
System.out.print(i);
System.out.print('\t');
switch (getChunkIndex(fNodeType, chunk, index)) {
case DocumentImpl.ELEMENT_DEFINITION_NODE: { System.out.print("EDef"); break; }
case Node.DOCUMENT_NODE: { System.out.print("Doc"); break; }
case Node.DOCUMENT_TYPE_NODE: { System.out.print("DType"); break; }
case Node.COMMENT_NODE: { System.out.print("Com"); break; }
case Node.PROCESSING_INSTRUCTION_NODE: { System.out.print("PI"); break; }
case Node.ELEMENT_NODE: { System.out.print("Elem"); break; }
case Node.ENTITY_NODE: { System.out.print("Ent"); break; }
case Node.ENTITY_REFERENCE_NODE: { System.out.print("ERef"); break; }
case Node.TEXT_NODE: { System.out.print("Text"); break; }
case Node.ATTRIBUTE_NODE: { System.out.print("Attr"); break; }
case DeferredNode.TYPE_NODE: { System.out.print("TypeInfo"); break; }
default: { System.out.print("?"+getChunkIndex(fNodeType, chunk, index)); }
}
System.out.print('\t');
System.out.print(getChunkValue(fNodeName, chunk, index));
System.out.print('\t');
System.out.print(getNodeValue(chunk, index));
System.out.print('\t');
System.out.print(getChunkValue(fNodeURI, chunk, index));
System.out.print('\t');
System.out.print(getChunkIndex(fNodeParent, chunk, index));
System.out.print('\t');
System.out.print(getChunkIndex(fNodeLastChild, chunk, index));
System.out.print('\t');
System.out.print(getChunkIndex(fNodePrevSib, chunk, index));
System.out.print('\t');
System.out.print(getChunkIndex(fNodeExtra, chunk, index));
System.out.println();
}
System.out.println("# end table");
}
} // print()
//
// DeferredNode methods
//
/** Returns the node index. */
public int getNodeIndex() {
return 0;
}
//
// Protected methods
//
/** Synchronizes the node's data. */
protected void synchronizeData() {
// no need to sync in the future
needsSyncData(false);
// fluff up enough nodes to fill identifiers hash
if (fIdElement != null) {
// REVISIT: There has to be a more efficient way of
// doing this. But keep in mind that the
// tree can have been altered and re-ordered
// before all of the element nodes with ID
// attributes have been registered. For now
// this is reasonable and safe. -Ac
IntVector path = new IntVector();
for (int i = 0; i < fIdCount; i++) {
// ignore if it's already been registered
int elementNodeIndex = fIdElement[i];
String idName = fIdName[i];
if (idName == null) {
continue;
}
// find path from this element to the root
path.removeAllElements();
int index = elementNodeIndex;
do {
path.addElement(index);
int pchunk = index >> CHUNK_SHIFT;
int pindex = index & CHUNK_MASK;
index = getChunkIndex(fNodeParent, pchunk, pindex);
} while (index != -1);
// Traverse path (backwards), fluffing the elements
// along the way. When this loop finishes, "place"
// will contain the reference to the element node
// we're interested in. -Ac
Node place = this;
for (int j = path.size() - 2; j >= 0; j--) {
index = path.elementAt(j);
Node child = place.getLastChild();
while (child != null) {
if (child instanceof DeferredNode) {
int nodeIndex =
((DeferredNode)child).getNodeIndex();
if (nodeIndex == index) {
place = child;
break;
}
}
child = child.getPreviousSibling();
}
}
// register the element
Element element = (Element)place;
putIdentifier0(idName, element);
fIdName[i] = null;
// see if there are more IDs on this element
while (i + 1 < fIdCount &&
fIdElement[i + 1] == elementNodeIndex) {
idName = fIdName[++i];
if (idName == null) {
continue;
}
putIdentifier0(idName, element);
}
}
} // if identifiers
} // synchronizeData()
/**
* Synchronizes the node's children with the internal structure.
* Fluffing the children at once solves a lot of work to keep
* the two structures in sync. The problem gets worse when
* editing the tree -- this makes it a lot easier.
*/
protected void synchronizeChildren() {
if (needsSyncData()) {
synchronizeData();
/*
* when we have elements with IDs this method is being recursively
* called from synchronizeData, in which case we've already gone
* through the following and we can now simply stop here.
*/
if (!needsSyncChildren()) {
return;
}
}
// we don't want to generate any event for this so turn them off
boolean orig = mutationEvents;
mutationEvents = false;
// no need to sync in the future
needsSyncChildren(false);
getNodeType(0);
// create children and link them as siblings
ChildNode first = null;
ChildNode last = null;
for (int index = getLastChild(0);
index != -1;
index = getPrevSibling(index)) {
ChildNode node = (ChildNode)getNodeObject(index);
if (last == null) {
last = node;
}
else {
first.previousSibling = node;
}
node.ownerNode = this;
node.isOwned(true);
node.nextSibling = first;
first = node;
// save doctype and document type
int type = node.getNodeType();
if (type == Node.ELEMENT_NODE) {
docElement = (ElementImpl)node;
}
else if (type == Node.DOCUMENT_TYPE_NODE) {
docType = (DocumentTypeImpl)node;
}
}
if (first != null) {
firstChild = first;
first.isFirstChild(true);
lastChild(last);
}
// set mutation events flag back to its original value
mutationEvents = orig;
} // synchronizeChildren()
/**
* Synchronizes the node's children with the internal structure.
* Fluffing the children at once solves a lot of work to keep
* the two structures in sync. The problem gets worse when
* editing the tree -- this makes it a lot easier.
* This is not directly used in this class but this method is
* here so that it can be shared by all deferred subclasses of AttrImpl.
*/
protected final void synchronizeChildren(AttrImpl a, int nodeIndex) {
// we don't want to generate any event for this so turn them off
boolean orig = getMutationEvents();
setMutationEvents(false);
// no need to sync in the future
a.needsSyncChildren(false);
// create children and link them as siblings or simply store the value
// as a String if all we have is one piece of text
int last = getLastChild(nodeIndex);
int prev = getPrevSibling(last);
if (prev == -1) {
a.value = getNodeValueString(nodeIndex);
a.hasStringValue(true);
}
else {
ChildNode firstNode = null;
ChildNode lastNode = null;
for (int index = last; index != -1;
index = getPrevSibling(index)) {
ChildNode node = (ChildNode) getNodeObject(index);
if (lastNode == null) {
lastNode = node;
}
else {
firstNode.previousSibling = node;
}
node.ownerNode = a;
node.isOwned(true);
node.nextSibling = firstNode;
firstNode = node;
}
if (lastNode != null) {
a.value = firstNode; // firstChild = firstNode
firstNode.isFirstChild(true);
a.lastChild(lastNode);
}
a.hasStringValue(false);
}
// set mutation events flag back to its original value
setMutationEvents(orig);
} // synchronizeChildren(AttrImpl,int):void
/**
* Synchronizes the node's children with the internal structure.
* Fluffing the children at once solves a lot of work to keep
* the two structures in sync. The problem gets worse when
* editing the tree -- this makes it a lot easier.
* This is not directly used in this class but this method is
* here so that it can be shared by all deferred subclasses of ParentNode.
*/
protected final void synchronizeChildren(ParentNode p, int nodeIndex) {
// we don't want to generate any event for this so turn them off
boolean orig = getMutationEvents();
setMutationEvents(false);
// no need to sync in the future
p.needsSyncChildren(false);
// create children and link them as siblings
ChildNode firstNode = null;
ChildNode lastNode = null;
for (int index = getLastChild(nodeIndex);
index != -1;
index = getPrevSibling(index)) {
ChildNode node = (ChildNode) getNodeObject(index);
if (lastNode == null) {
lastNode = node;
}
else {
firstNode.previousSibling = node;
}
node.ownerNode = p;
node.isOwned(true);
node.nextSibling = firstNode;
firstNode = node;
}
if (lastNode != null) {
p.firstChild = firstNode;
firstNode.isFirstChild(true);
p.lastChild(lastNode);
}
// set mutation events flag back to its original value
setMutationEvents(orig);
} // synchronizeChildren(ParentNode,int):void
// utility methods
/** Ensures that the internal tables are large enough. */
protected void ensureCapacity(int chunk) {
if (fNodeType == null) {
// create buffers
fNodeType = new int[INITIAL_CHUNK_COUNT][];
fNodeName = new Object[INITIAL_CHUNK_COUNT][];
fNodeValue = new Object[INITIAL_CHUNK_COUNT][];
fNodeParent = new int[INITIAL_CHUNK_COUNT][];
fNodeLastChild = new int[INITIAL_CHUNK_COUNT][];
fNodePrevSib = new int[INITIAL_CHUNK_COUNT][];
fNodeURI = new Object[INITIAL_CHUNK_COUNT][];
fNodeExtra = new int[INITIAL_CHUNK_COUNT][];
}
else if (fNodeType.length <= chunk) {
// resize the tables
int newsize = chunk * 2;
int[][] newArray = new int[newsize][];
System.arraycopy(fNodeType, 0, newArray, 0, chunk);
fNodeType = newArray;
Object[][] newStrArray = new Object[newsize][];
System.arraycopy(fNodeName, 0, newStrArray, 0, chunk);
fNodeName = newStrArray;
newStrArray = new Object[newsize][];
System.arraycopy(fNodeValue, 0, newStrArray, 0, chunk);
fNodeValue = newStrArray;
newArray = new int[newsize][];
System.arraycopy(fNodeParent, 0, newArray, 0, chunk);
fNodeParent = newArray;
newArray = new int[newsize][];
System.arraycopy(fNodeLastChild, 0, newArray, 0, chunk);
fNodeLastChild = newArray;
newArray = new int[newsize][];
System.arraycopy(fNodePrevSib, 0, newArray, 0, chunk);
fNodePrevSib = newArray;
newStrArray = new Object[newsize][];
System.arraycopy(fNodeURI, 0, newStrArray, 0, chunk);
fNodeURI = newStrArray;
newArray = new int[newsize][];
System.arraycopy(fNodeExtra, 0, newArray, 0, chunk);
fNodeExtra = newArray;
}
else if (fNodeType[chunk] != null) {
// Done - there's sufficient capacity
return;
}
// create new chunks
createChunk(fNodeType, chunk);
createChunk(fNodeName, chunk);
createChunk(fNodeValue, chunk);
createChunk(fNodeParent, chunk);
createChunk(fNodeLastChild, chunk);
createChunk(fNodePrevSib, chunk);
createChunk(fNodeURI, chunk);
createChunk(fNodeExtra, chunk);
// Done
return;
} // ensureCapacity(int,int)
/** Creates a node of the specified type. */
protected int createNode(short nodeType) {
// ensure tables are large enough
int chunk = fNodeCount >> CHUNK_SHIFT;
int index = fNodeCount & CHUNK_MASK;
ensureCapacity(chunk);
// initialize node
setChunkIndex(fNodeType, nodeType, chunk, index);
// return node index number
return fNodeCount++;
} // createNode(short):int
/**
* Performs a binary search for a target value in an array of
* values. The array of values must be in ascending sorted order
* before calling this method and all array values must be
* non-negative.
*
* @param values The array of values to search.
* @param start The starting offset of the search.
* @param end The ending offset of the search.
* @param target The target value.
*
* @return This function will return the first occurrence
* of the target value, or -1 if the target value cannot
* be found.
*/
protected static int binarySearch(final int values[],
int start, int end, int target) {
if (DEBUG_IDS) {
System.out.println("binarySearch(), target: "+target);
}
// look for target value
while (start <= end) {
// is this the one we're looking for?
int middle = (start + end) >>> 1;
int value = values[middle];
if (DEBUG_IDS) {
System.out.print(" value: "+value+", target: "+target+" // ");
print(values, start, end, middle, target);
}
if (value == target) {
while (middle > 0 && values[middle - 1] == target) {
middle--;
}
if (DEBUG_IDS) {
System.out.println("FOUND AT "+middle);
}
return middle;
}
// is this point higher or lower?
if (value > target) {
end = middle - 1;
}
else {
start = middle + 1;
}
} // while
// not found
if (DEBUG_IDS) {
System.out.println("NOT FOUND!");
}
return -1;
} // binarySearch(int[],int,int,int):int
//
// Private methods
//
private static final int[] INIT_ARRAY = new int[CHUNK_SIZE + 1];
static {
for (int i = 0; i < CHUNK_SIZE; i++) {
INIT_ARRAY[i] = -1;
}
}
/** Creates the specified chunk in the given array of chunks. */
private final void createChunk(int data[][], int chunk) {
data[chunk] = new int[CHUNK_SIZE + 1];
System.arraycopy(INIT_ARRAY, 0, data[chunk], 0, CHUNK_SIZE);
}
static final class RefCount {
int fCount;
}
private final void createChunk(Object data[][], int chunk) {
data[chunk] = new Object[CHUNK_SIZE + 1];
data[chunk][CHUNK_SIZE] = new RefCount();
}
/**
* Sets the specified value in the given of data at the chunk and index.
*
* @return Returns the old value.
*/
private final int setChunkIndex(int data[][], int value,
int chunk, int index) {
if (value == -1) {
return clearChunkIndex(data, chunk, index);
}
int [] dataChunk = data[chunk];
// Re-create chunk if it was deleted.
if (dataChunk == null) {
createChunk(data, chunk);
dataChunk = data[chunk];
}
int ovalue = dataChunk[index];
if (ovalue == -1) {
dataChunk[CHUNK_SIZE]++;
}
dataChunk[index] = value;
return ovalue;
}
private final String setChunkValue(Object data[][], Object value,
int chunk, int index) {
if (value == null) {
return clearChunkValue(data, chunk, index);
}
Object [] dataChunk = data[chunk];
// Re-create chunk if it was deleted.
if (dataChunk == null) {
createChunk(data, chunk);
dataChunk = data[chunk];
}
String ovalue = (String) dataChunk[index];
if (ovalue == null) {
RefCount c = (RefCount) dataChunk[CHUNK_SIZE];
c.fCount++;
}
dataChunk[index] = value;
return ovalue;
}
/**
* Returns the specified value in the given data at the chunk and index.
*/
private final int getChunkIndex(int data[][], int chunk, int index) {
return data[chunk] != null ? data[chunk][index] : -1;
}
private final String getChunkValue(Object data[][], int chunk, int index) {
return data[chunk] != null ? (String) data[chunk][index] : null;
}
private final String getNodeValue(int chunk, int index) {
Object data = fNodeValue[chunk][index];
if (data == null){
return null;
}
else if (data instanceof String){
return (String)data;
}
else {
// type information
return data.toString();
}
}
/**
* Clears the specified value in the given data at the chunk and index.
* Note that this method will clear the given chunk if the reference
* count becomes zero.
*
* @return Returns the old value.
*/
private final int clearChunkIndex(int data[][], int chunk, int index) {
int value = data[chunk] != null ? data[chunk][index] : -1;
if (value != -1) {
data[chunk][CHUNK_SIZE]--;
data[chunk][index] = -1;
if (data[chunk][CHUNK_SIZE] == 0) {
data[chunk] = null;
}
}
return value;
}
private final String clearChunkValue(Object data[][],
int chunk, int index) {
String value = data[chunk] != null ? (String)data[chunk][index] : null;
if (value != null) {
data[chunk][index] = null;
RefCount c = (RefCount) data[chunk][CHUNK_SIZE];
c.fCount--;
if (c.fCount == 0) {
data[chunk] = null;
}
}
return value;
}
/**
* This version of putIdentifier is needed to avoid fluffing
* all of the paths to ID attributes when a node object is
* created that contains an ID attribute.
*/
private final void putIdentifier0(String idName, Element element) {
if (DEBUG_IDS) {
System.out.println("putIdentifier0("+
idName+", "+
element+')');
}
// create hashtable
if (identifiers == null) {
identifiers = new java.util.Hashtable();
}
// save ID and its associated element
identifiers.put(idName, element);
} // putIdentifier0(String,Element)
/** Prints the ID array. */
private static void print(int values[], int start, int end,
int middle, int target) {
if (DEBUG_IDS) {
System.out.print(start);
System.out.print(" [");
for (int i = start; i < end; i++) {
if (middle == i) {
System.out.print("!");
}
System.out.print(values[i]);
if (values[i] == target) {
System.out.print("*");
}
if (i < end - 1) {
System.out.print(" ");
}
}
System.out.println("] "+end);
}
} // print(int[],int,int,int,int)
//
// Classes
//
/**
* A simple integer vector.
*/
static final class IntVector {
//
// Data
//
/** Data. */
private int data[];
/** Size. */
private int size;
//
// Public methods
//
/** Returns the length of this vector. */
public int size() {
return size;
}
/** Returns the element at the specified index. */
public int elementAt(int index) {
return data[index];
}
/** Appends an element to the end of the vector. */
public void addElement(int element) {
ensureCapacity(size + 1);
data[size++] = element;
}
/** Clears the vector. */
public void removeAllElements() {
size = 0;
}
//
// Private methods
//
/** Makes sure that there is enough storage. */
private void ensureCapacity(int newsize) {
if (data == null) {
data = new int[newsize + 15];
}
else if (newsize > data.length) {
int newdata[] = new int[newsize + 15];
System.arraycopy(data, 0, newdata, 0, data.length);
data = newdata;
}
} // ensureCapacity(int)
} // class IntVector
} // class DeferredDocumentImpl