| /******************************************************************************* |
| * Copyright (c) 2008 Standards for Technology in Automotive Retail and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * David Carver - initial API and implementation |
| * |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.xsl.core.internal.parser; |
| |
| import org.eclipse.wst.sse.core.internal.ltk.parser.BlockTokenizer; |
| import org.eclipse.wst.sse.core.internal.ltk.parser.RegionParser; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion; |
| import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionContainer; |
| import org.eclipse.wst.sse.core.internal.util.Debug; |
| import org.eclipse.wst.xml.core.internal.parser.XMLSourceParser; |
| import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext; |
| |
| public class XSLSourceParser extends XMLSourceParser { |
| |
| |
| public XSLSourceParser() { |
| super(); |
| } |
| |
| @Override |
| public RegionParser newInstance() { |
| XSLSourceParser newInstance = new XSLSourceParser(); |
| newInstance.setTokenizer(getTokenizer().newInstance()); |
| return newInstance; |
| } |
| @Override |
| protected void setTokenizer(BlockTokenizer newTokenizer) { |
| // TODO Auto-generated method stub |
| super.setTokenizer(newTokenizer); |
| } |
| |
| 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; |
| } |
| |
| } |
| |
