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Posted to commits@xerces.apache.org by rp...@locus.apache.org on 2000/01/26 03:18:24 UTC
cvs commit: xml-xerces/java/src/org/apache/xerces/dom NodeIteratorImpl.java TreeWalkerImpl.java Makefile
rpfeiffe 00/01/25 18:18:24
Modified: java/src/org/apache/xerces/dom Makefile
Added: java/src/org/apache/xerces/dom NodeIteratorImpl.java
TreeWalkerImpl.java
Log:
The NodeIteratorImpl.java and the TreeWalkerImpl.java are
being moved from the dom.traversal package/dir up to the dom
package/dir.
Revision Changes Path
1.5 +3 -3 xml-xerces/java/src/org/apache/xerces/dom/Makefile
Index: Makefile
===================================================================
RCS file: /home/cvs/xml-xerces/java/src/org/apache/xerces/dom/Makefile,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- Makefile 2000/01/21 22:21:03 1.4
+++ Makefile 2000/01/26 02:18:24 1.5
@@ -46,15 +46,16 @@
NamedNodeMapImpl.class\
NodeContainer.class\
NodeImpl.class\
+ NodeIteratorImpl.class\
NotationImpl.class\
ProcessingInstructionImpl.class\
- TextImpl.class
+ TextImpl.class\
+ TreeWalkerImpl.class
all: dirs compile
dirs:
${MAKE} -C events
- ${MAKE} -C traversal
compile: ${TARGETS}
@@ -70,5 +71,4 @@
clean:
${RM} *.class
${MAKE} -C events clean
- ${MAKE} -C traversal clean
1.1 xml-xerces/java/src/org/apache/xerces/dom/NodeIteratorImpl.java
Index: NodeIteratorImpl.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xerces.dom;
import org.w3c.dom.*;
import org.w3c.dom.traversal.*;
import org.apache.xerces.dom.DocumentImpl;
import org.apache.xerces.dom.DOMExceptionImpl;
/** DefaultNodeIterator implements a NodeIterator, which iterates a
* DOM tree in the expected depth first way.
*
* <p>The whatToShow and filter functionality is implemented as expected.
*
* <p>This class also has method removeNode to enable iterator "fix-up"
* on DOM remove. It is expected that the DOM implementation call removeNode
* right before the actual DOM transformation. If not called by the DOM,
* the client could call it before doing the removal.
*/
public class NodeIteratorImpl implements NodeIterator {
//
// Data
//
/** The DocumentImpl which created this iterator, so it can be detached. */
private DocumentImpl fDocument;
/** The root. */
private Node fRoot;
/** The whatToShow mask. */
private int fWhatToShow = NodeFilter.SHOW_ALL;
/** The NodeFilter reference. */
private NodeFilter fNodeFilter;
/** If detach is called, the fDetach flag is true, otherwise flase. */
private boolean fDetach = false;
//
// Iterator state - current node and direction.
//
// Note: The current node and direction are sufficient to implement
// the desired behaviour of the current pointer being _between_
// two nodes. The fCurrentNode is actually the last node returned,
// and the
// direction is whether the pointer is in front or behind this node.
// (usually akin to whether the node was returned via nextNode())
// (eg fForward = true) or previousNode() (eg fForward = false).
// Note also, if removing a Node, the fCurrentNode
// can be placed on a Node which would not pass filters.
/** The last Node returned. */
private Node fCurrentNode;
/** The direction of the iterator on the fCurrentNode.
* <pre>
* nextNode() == fForward = true;
* previousNode() == fForward = false;
* </pre>
*/
private boolean fForward = true;
/** When TRUE, the children of entites references are returned in the iterator. */
private boolean fEntityReferenceExpansion;
//
// Constructor
//
/** Public constructor */
public NodeIteratorImpl( DocumentImpl document,
Node root,
int whatToShow,
NodeFilter nodeFilter,
boolean entityReferenceExpansion) {
fDocument = document;
fRoot = root;
fCurrentNode = null;
fWhatToShow = whatToShow;
fNodeFilter = nodeFilter;
fEntityReferenceExpansion = entityReferenceExpansion;
}
// Implementation Note: Note that the iterator looks at whatToShow
// and filter values at each call, and therefore one _could_ add
// setters for these values and alter them while iterating!
/** Return the whatToShow value */
public int getWhatToShow() {
return fWhatToShow;
}
/** Return the filter */
public NodeFilter getFilter() {
return fNodeFilter;
}
/** Return whether children entity references are included in the iterator. */
public boolean getExpandEntityReferences() {
return fEntityReferenceExpansion;
}
/** Return the next Node in the Iterator. The node is the next node in
* depth-first order which also passes the filter, and whatToShow.
* If there is no next node which passes these criteria, then return null.
*/
public Node nextNode() {
if( fDetach) {
throw new DOMExceptionImpl(
DOMExceptionImpl.INVALID_STATE_ERR,
"INVALID_STATE_ERR");
}
// if root is null there is no next node.
if (fRoot == null) return null;
Node nextNode = fCurrentNode;
boolean accepted = false; // the next node has not been accepted.
accepted_loop:
while (!accepted) {
// if last direction is not forward, repeat node.
if (!fForward && nextNode!=null) {
//System.out.println("nextNode():!fForward:"+fCurrentNode.getNodeName());
nextNode = fCurrentNode;
} else {
// else get the next node via depth-first
if (!fEntityReferenceExpansion
&& nextNode != null
&& nextNode.getNodeType() == Node.ENTITY_REFERENCE_NODE) {
nextNode = nextNode(nextNode, false);
} else {
nextNode = nextNode(nextNode, true);
}
}
fForward = true; //REVIST: should direction be set forward before null check?
// nothing in the list. return null.
if (nextNode == null) return null;
// does node pass the filters and whatToShow?
accepted = acceptNode(nextNode);
if (accepted) {
// if so, then the node is the current node.
fCurrentNode = nextNode;
return fCurrentNode;
} else
continue accepted_loop;
} // while (!accepted) {
// no nodes, or no accepted nodes.
return null;
}
/** Return the previous Node in the Iterator. The node is the next node in
* _backwards_ depth-first order which also passes the filter, and whatToShow.
*/
public Node previousNode() {
if( fDetach) {
throw new DOMExceptionImpl(
DOMExceptionImpl.INVALID_STATE_ERR,
"INVALID_STATE_ERR");
}
// if the root is null, or the current node is null, return null.
if (fRoot == null || fCurrentNode == null) return null;
Node previousNode = fCurrentNode;
boolean accepted = false;
accepted_loop:
while (!accepted) {
if (fForward && previousNode != null) {
//repeat last node.
previousNode = fCurrentNode;
} else {
// get previous node in backwards depth first order.
previousNode = previousNode(previousNode);
}
// we are going backwards
fForward = false;
// if the new previous node is null, we're at head or past the root,
// so return null.
if (previousNode == null) return null;
// check if node passes filters and whatToShow.
accepted = acceptNode(previousNode);
if (accepted) {
// if accepted, update the current node, and return it.
fCurrentNode = previousNode;
return fCurrentNode;
} else
continue accepted_loop;
}
// there are no nodes?
return null;
}
/** The node is accepted if it passes the whatToShow and the filter. */
boolean acceptNode(Node node) {
if (fNodeFilter == null) {
return ( fWhatToShow & (1 << node.getNodeType()-1)) != 0 ;
} else {
return ((fWhatToShow & (1 << node.getNodeType()-1)) != 0 )
&& fNodeFilter.acceptNode(node) == NodeFilter.FILTER_ACCEPT;
}
}
/** Return node, if matches or any parent if matches. */
Node matchNodeOrParent(Node node) {
for (Node n = node; n != fRoot; n = n.getParentNode()) {
if (node == n) return n;
}
return null;
}
/** The method nextNode(Node, boolean) returns the next node
* from the actual DOM tree.
*
* The boolean visitChildren determines whether to visit the children.
* The result is the nextNode.
*/
Node nextNode(Node node, boolean visitChildren) {
if (node == null) return fRoot;
Node result;
// only check children if we visit children.
if (visitChildren) {
//if hasChildren, return 1st child.
if (node.hasChildNodes()) {
result = node.getFirstChild();
return result;
}
}
// if hasSibling, return sibling
result = node.getNextSibling();
if (result != null) return result;
// return parent's 1st sibling.
Node parent = node.getParentNode();
while (parent != null && parent != fRoot) {
result = parent.getNextSibling();
if (result != null) {
return result;
} else {
parent = parent.getParentNode();
}
} // while (parent != null && parent != fRoot) {
// end of list, return null
return null;
}
/** The method previousNode(Node) returns the previous node
* from the actual DOM tree.
*/
Node previousNode(Node node) {
Node result;
// if we're at the root, return null.
if (node == fRoot) return null;
// get sibling
result = node.getPreviousSibling();
if (result == null) {
//if 1st sibling, return parent
result = node.getParentNode();
return result;
}
// if sibling has children, keep getting last child of child.
if (result.hasChildNodes()
&& !(!fEntityReferenceExpansion
&& result != null
&& result.getNodeType() == Node.ENTITY_REFERENCE_NODE))
{
while (result.hasChildNodes()) {
result = result.getLastChild();
}
}
return result;
}
/** Fix-up the iterator on a remove. Called by DOM or otherwise,
* before an actual DOM remove.
*/
public void removeNode(Node node) {
// Implementation note: Fix-up means setting the current node properly
// after a remove.
if (node == null) return;
Node deleted = matchNodeOrParent(node);
if (deleted == null) return;
if (fForward) {
fCurrentNode = previousNode(deleted);
} else
// if (!fForward)
{
Node next = nextNode(deleted, false);
if (next!=null) {
// normal case: there _are_ nodes following this in the iterator.
fCurrentNode = next;
} else {
// the last node in the iterator is to be removed,
// so we set the current node to be the previous one.
fCurrentNode = previousNode(deleted);
fForward = true;
}
}
}
public void detach() {
fDetach = true;
fDocument.removeNodeIterator(this);
}
}
1.1 xml-xerces/java/src/org/apache/xerces/dom/TreeWalkerImpl.java
Index: TreeWalkerImpl.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xerces.dom;
import org.w3c.dom.*;
import org.w3c.dom.traversal.*;
/** This class implements the TreeWalker interface. */
public class TreeWalkerImpl implements TreeWalker {
//
// Data
//
/** When TRUE, the children of entites references are returned in the iterator. */
private boolean fEntityReferenceExpansion = false;
/** The whatToShow mask. */
int fWhatToShow = NodeFilter.SHOW_ALL;
/** The NodeFilter reference. */
NodeFilter fNodeFilter;
/** The current Node. */
Node fCurrentNode;
/** The root Node. */
Node fRoot;
//
// Implementation Note: No state is kept except the data above
// (fWhatToShow, fNodeFilter, fCurrentNode, fRoot) such that
// setters could be created for these data values and the
// implementation will still work.
//
// Constructor
//
/** Public constructor */
public TreeWalkerImpl(Node root,
int whatToShow,
NodeFilter nodeFilter,
boolean entityReferenceExpansion) {
fCurrentNode = root;
fRoot = root;
fWhatToShow = whatToShow;
fNodeFilter = nodeFilter;
fEntityReferenceExpansion = entityReferenceExpansion;
}
/** Return the whatToShow value */
public int getWhatToShow() {
return fWhatToShow;
}
/** Return the NodeFilter */
public NodeFilter getFilter() {
return fNodeFilter;
}
/** Return whether children entity references are included in the iterator. */
public boolean getExpandEntityReferences() {
return fEntityReferenceExpansion;
}
/** Return the current Node. */
public Node getCurrentNode() {
return fCurrentNode;
}
/** Return the current Node. */
public void setCurrentNode(Node node) {
fCurrentNode = node;
}
/** Return the parent Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node parentNode() {
if (fCurrentNode == null) return null;
Node node = getParentNode(fCurrentNode);
if (node !=null) {
fCurrentNode = node;
}
return node;
}
/** Return the first child Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node firstChild() {
if (fCurrentNode == null) return null;
Node node = getFirstChild(fCurrentNode);
if (node !=null) {
fCurrentNode = node;
}
return node;
}
/** Return the last child Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node lastChild() {
if (fCurrentNode == null) return null;
Node node = getLastChild(fCurrentNode);
if (node !=null) {
fCurrentNode = node;
}
return node;
}
/** Return the previous sibling Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node previousSibling() {
if (fCurrentNode == null) return null;
Node node = getPreviousSibling(fCurrentNode);
if (node !=null) {
fCurrentNode = node;
}
return node;
}
/** Return the next sibling Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node nextSibling(){
if (fCurrentNode == null) return null;
Node node = getNextSibling(fCurrentNode);
if (node !=null) {
fCurrentNode = node;
}
return node;
}
/** Return the previous Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node previousNode() {
Node result;
if (fCurrentNode == null) return null;
// get sibling
result = getPreviousSibling(fCurrentNode);
if (result == null) {
result = getParentNode(fCurrentNode);
if (result != null) {
fCurrentNode = result;
return fCurrentNode;
}
return null;
}
// get the lastChild of result.
Node lastChild = getLastChild(result);
Node prev = lastChild ;
while (lastChild != null) {
prev = lastChild ;
lastChild = getLastChild(prev) ;
}
lastChild = prev ;
// if there is a lastChild which passes filters return it.
if (lastChild != null) {
fCurrentNode = lastChild;
return fCurrentNode;
}
// otherwise return the previous sibling.
if (result != null) {
fCurrentNode = result;
return fCurrentNode;
}
// otherwise return null.
return null;
}
/** Return the next Node from the current node,
* after applying filter, whatToshow.
* If result is not null, set the current Node.
*/
public Node nextNode() {
if (fCurrentNode == null) return null;
Node result = getFirstChild(fCurrentNode);
if (result != null) {
fCurrentNode = result;
return result;
}
result = getNextSibling(fCurrentNode);
if (result != null) {
fCurrentNode = result;
return result;
}
// return parent's 1st sibling.
Node parent = getParentNode(fCurrentNode);
while (parent != null) {
result = getNextSibling(parent);
if (result != null) {
fCurrentNode = result;
return result;
} else {
parent = getParentNode(parent);
}
}
// end , return null
return null;
}
/** Internal function.
* Return the parent Node, from the input node
* after applying filter, whatToshow.
* The current node is not consulted or set.
*/
Node getParentNode(Node node) {
if (node == null || node == fRoot) return null;
Node newNode = node.getParentNode();
if (newNode == null) return null;
int accept = acceptNode(newNode);
if (accept == NodeFilter.FILTER_ACCEPT)
return newNode;
else
//if (accept == NodeFilter.SKIP_NODE) // and REJECT too.
{
return getParentNode(newNode);
}
}
/** Internal function.
* Return the nextSibling Node, from the input node
* after applying filter, whatToshow.
* The current node is not consulted or set.
*/
Node getNextSibling(Node node) {
if (node == null || node == fRoot) return null;
Node newNode = node.getNextSibling();
if (newNode == null) {
newNode = node.getParentNode();
if (newNode == null || node == fRoot) return null;
int parentAccept = acceptNode(newNode);
if (parentAccept==NodeFilter.FILTER_SKIP) {
return getNextSibling(newNode);
}
return null;
}
int accept = acceptNode(newNode);
if (accept == NodeFilter.FILTER_ACCEPT)
return newNode;
else
if (accept == NodeFilter.FILTER_SKIP) {
Node fChild = getFirstChild(newNode);
if (fChild == null) {
return getNextSibling(newNode);
}
return fChild;
}
else
//if (accept == NodeFilter.REJECT_NODE)
{
return getNextSibling(newNode);
}
} // getNextSibling(Node node) {
/** Internal function.
* Return the previous sibling Node, from the input node
* after applying filter, whatToshow.
* The current node is not consulted or set.
*/
Node getPreviousSibling(Node node) {
if (node == null || node == fRoot) return null;
Node newNode = node.getPreviousSibling();
if (newNode == null) {
newNode = node.getParentNode();
if (newNode == null || node == fRoot) return null;
int parentAccept = acceptNode(newNode);
if (parentAccept==NodeFilter.FILTER_SKIP) {
return getPreviousSibling(newNode);
}
return null;
}
int accept = acceptNode(newNode);
if (accept == NodeFilter.FILTER_ACCEPT)
return newNode;
else
if (accept == NodeFilter.FILTER_SKIP) {
Node fChild = getLastChild(newNode);
if (fChild == null) {
return getPreviousSibling(newNode);
}
return fChild;
}
else
//if (accept == NodeFilter.REJECT_NODE)
{
return getPreviousSibling(newNode);
}
} // getPreviousSibling(Node node) {
/** Internal function.
* Return the first child Node, from the input node
* after applying filter, whatToshow.
* The current node is not consulted or set.
*/
Node getFirstChild(Node node) {
if (node == null) return null;
if ( !fEntityReferenceExpansion
&& node.getNodeType() == Node.ENTITY_REFERENCE_NODE)
return null;
Node newNode = node.getFirstChild();
if (newNode == null) return null;
int accept = acceptNode(newNode);
if (accept == NodeFilter.FILTER_ACCEPT)
return newNode;
else
if (accept == NodeFilter.FILTER_SKIP
&& newNode.hasChildNodes())
{
return getFirstChild(newNode);
}
else
//if (accept == NodeFilter.REJECT_NODE)
{
return getNextSibling(newNode);
}
}
/** Internal function.
* Return the last child Node, from the input node
* after applying filter, whatToshow.
* The current node is not consulted or set.
*/
Node getLastChild(Node node) {
if (node == null) return null;
if ( !fEntityReferenceExpansion
&& node.getNodeType() == Node.ENTITY_REFERENCE_NODE)
return null;
Node newNode = node.getLastChild();
if (newNode == null) return null;
int accept = acceptNode(newNode);
if (accept == NodeFilter.FILTER_ACCEPT)
return newNode;
else
if (accept == NodeFilter.FILTER_SKIP
&& newNode.hasChildNodes())
{
return getLastChild(newNode);
}
else
//if (accept == NodeFilter.REJECT_NODE)
{
return getPreviousSibling(newNode);
}
}
/** Internal function.
* The node whatToShow and the filter are combined into one result. */
short acceptNode(Node node) {
/***
7.1.2.4. Filters and whatToShow flags
Iterator and TreeWalker apply whatToShow flags before applying Filters. If a node is rejected by the
active whatToShow flags, a Filter will not be called to evaluate that node. When a node is rejected by
the active whatToShow flags, children of that node will still be considered, and Filters may be called to
evaluate them.
***/
if (fNodeFilter == null) {
if ( ( fWhatToShow & (1 << node.getNodeType()-1)) != 0) {
return NodeFilter.FILTER_ACCEPT;
} else {
return NodeFilter.FILTER_SKIP;
}
} else {
if ((fWhatToShow & (1 << node.getNodeType()-1)) != 0 ) {
return fNodeFilter.acceptNode(node);
} else {
// What to show has failed. See above excerpt from spec.
// Equivalent to FILTER_SKIP.
return NodeFilter.FILTER_SKIP;
}
}
}
}