protected IStructuredDocumentRegion parseNodes() {
// regions are initially reported as complete offsets within the
// scanned input
// they are adjusted here to be indexes from the currentNode's start
// offset
IStructuredDocumentRegion headNode = null;
IStructuredDocumentRegion lastNode = null;
ITextRegion region = null;
IStructuredDocumentRegion currentNode = null;
String type = null;
while ((region = getNextRegion()) != null) {
type = region.getType();
// these types (might) demand a IStructuredDocumentRegion for each
// of them
if (type == DOMRegionContext.BLOCK_TEXT) {
if (currentNode != null && currentNode.getLastRegion().getType() == DOMRegionContext.BLOCK_TEXT) {
// multiple block texts indicated embedded containers; no
// new IStructuredDocumentRegion
currentNode.addRegion(region);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
region.adjustStart(-currentNode.getStart());
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
}
else {
// not continuing a IStructuredDocumentRegion
if (currentNode != null) {
// ensure that any existing node is at least
// terminated
if (!currentNode.isEnded()) {
currentNode.setLength(region.getStart() - currentNode.getStart());
// fCurrentNode.setTextLength(region.getStart() -
// fCurrentNode.getStart());
}
lastNode = currentNode;
}
fireNodeParsed(currentNode);
currentNode = createStructuredDocumentRegion(type);
if (lastNode != null) {
lastNode.setNext(currentNode);
}
currentNode.setPrevious(lastNode);
currentNode.setStart(region.getStart());
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
currentNode.setEnded(true);
region.adjustStart(-currentNode.getStart());
currentNode.addRegion(region);
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
}
}
// the following contexts OPEN new StructuredDocumentRegions
else if ((currentNode != null && currentNode.isEnded()) || (type == DOMRegionContext.XML_CONTENT) || (type == DOMRegionContext.XML_CHAR_REFERENCE) || (type == DOMRegionContext.XML_ENTITY_REFERENCE) || (type == DOMRegionContext.XML_PI_OPEN) || (type == DOMRegionContext.XML_TAG_OPEN) || (type == DOMRegionContext.XML_END_TAG_OPEN) || (type == DOMRegionContext.XML_COMMENT_OPEN) || (type == DOMRegionContext.XML_CDATA_OPEN) || (type == DOMRegionContext.XML_DECLARATION_OPEN)) {
if (currentNode != null) {
// ensure that any existing node is at least terminated
if (!currentNode.isEnded()) {
currentNode.setLength(region.getStart() - currentNode.getStart());
// fCurrentNode.setTextLength(region.getStart() -
// fCurrentNode.getStart());
}
lastNode = currentNode;
}
fireNodeParsed(currentNode);
currentNode = createStructuredDocumentRegion(type);
if (lastNode != null) {
lastNode.setNext(currentNode);
}
currentNode.setPrevious(lastNode);
currentNode.setStart(region.getStart());
currentNode.addRegion(region);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
region.adjustStart(-currentNode.getStart());
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
}
// the following contexts neither open nor close
// StructuredDocumentRegions; just add to them
else if ((type == DOMRegionContext.XML_TAG_NAME) || (type == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME) || (type == DOMRegionContext.XML_TAG_ATTRIBUTE_EQUALS) || (type == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) || (type == DOMRegionContext.XML_COMMENT_TEXT) || (type == DOMRegionContext.XML_PI_CONTENT) || (type == DOMRegionContext.XML_DOCTYPE_INTERNAL_SUBSET)) {
currentNode.addRegion(region);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
region.adjustStart(-currentNode.getStart());
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
}
// the following contexts close off StructuredDocumentRegions
// cleanly
else if ((type == DOMRegionContext.XML_PI_CLOSE) || (type == DOMRegionContext.XML_TAG_CLOSE) || (type == DOMRegionContext.XML_EMPTY_TAG_CLOSE) || (type == DOMRegionContext.XML_COMMENT_CLOSE) || (type == DOMRegionContext.XML_DECLARATION_CLOSE) || (type == DOMRegionContext.XML_CDATA_CLOSE)) {
currentNode.setEnded(true);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
currentNode.addRegion(region);
region.adjustStart(-currentNode.getStart());
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
}
// this is extremely rare, but valid
else if (type == DOMRegionContext.WHITE_SPACE) {
ITextRegion lastRegion = currentNode.getLastRegion();
// pack the embedded container with this region
if (lastRegion instanceof ITextRegionContainer) {
ITextRegionContainer container = (ITextRegionContainer) lastRegion;
container.getRegions().add(region);
// containers must have parent set ...
// setting for EACH subregion is redundent, but not sure
// where else to do, so will do here for now.
container.setParent(currentNode);
// DW 4/16/2003 regions no longer have parents
// region.setParent(container);
region.adjustStart(container.getLength() - region.getStart());
}
currentNode.getLastRegion().adjustLength(region.getLength());
currentNode.adjustLength(region.getLength());
}
else if (type == DOMRegionContext.UNDEFINED && currentNode != null) {
// skip on a very-first region situation as the default
// behavior is good enough
// combine with previous if also undefined
if (currentNode.getLastRegion() != null && currentNode.getLastRegion().getType() == DOMRegionContext.UNDEFINED) {
currentNode.getLastRegion().adjustLength(region.getLength());
currentNode.adjustLength(region.getLength());
}
// previous wasn't undefined
else {
currentNode.addRegion(region);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
region.adjustStart(-currentNode.getStart());
}
}
else {
// if an unknown type is the first region in the document,
// ensure that a node exists
if (currentNode == null) {
currentNode = createStructuredDocumentRegion(type);
currentNode.setStart(region.getStart());
}
currentNode.addRegion(region);
currentNode.setLength(region.getStart() + region.getLength() - currentNode.getStart());
region.adjustStart(-currentNode.getStart());
// DW 4/16/2003 regions no longer have parents
// region.setParent(currentNode);
if (Debug.debugTokenizer)
System.out.println(getClass().getName() + " found region of not specifically handled type " + region.getType() + " @ " + region.getStart() + "[" + region.getLength() + "]"); //$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
}
// these regions also get their own node, so close them cleanly
// NOTE: these regions have new StructuredDocumentRegions created
// for them above; it may
// be more readable if that is handled here as well, but the
// current layout
// ensures that they open StructuredDocumentRegions the same way
if ((type == DOMRegionContext.XML_CONTENT) || (type == DOMRegionContext.XML_CHAR_REFERENCE) || (type == DOMRegionContext.XML_ENTITY_REFERENCE)) {
currentNode.setEnded(true);
}
if (headNode == null && currentNode != null) {
headNode = currentNode;
}
}
if (currentNode != null) {
fireNodeParsed(currentNode);
currentNode.setPrevious(lastNode);
}
// fStringInput = null;
primReset();
return headNode;
}