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/*******************************************************************************
* Copyright (c) 2002, 2008 IBM Corporation 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:
* IBM Corporation - initial API and implementation
* Jens Lukowski/Innoopract - initial renaming/restructuring
*
*******************************************************************************/
package org.eclipse.wst.xml.core.internal.contentmodel.util;
import org.eclipse.wst.xml.core.internal.contentmodel.CMAnyElement;
import org.eclipse.wst.xml.core.internal.contentmodel.CMContent;
import org.eclipse.wst.xml.core.internal.contentmodel.CMDataType;
import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument;
import org.eclipse.wst.xml.core.internal.contentmodel.CMElementDeclaration;
import org.eclipse.wst.xml.core.internal.contentmodel.CMGroup;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNamedNodeMap;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNode;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNodeList;
public class CMDescriptionBuilder extends CMVisitor
{
protected StringBuffer sb;
protected CMNode root;
protected boolean isRootVisited;
public String buildDescription(CMNode node)
{
sb = new StringBuffer();
root = node;
isRootVisited = false;
visitCMNode(node);
return sb.toString();
}
public void visitCMAnyElement(CMAnyElement anyElement)
{
sb.append("namespace:uri=\"" + anyElement.getNamespaceURI() + "\""); //$NON-NLS-1$ //$NON-NLS-2$
}
public void visitCMDataType(CMDataType dataType)
{
sb.append("#PCDATA"); //$NON-NLS-1$
}
public void visitCMDocument(CMDocument document)
{
CMNamedNodeMap map = document.getElements();
int size = map.getLength();
for (int i = 0; i < size; i++)
{
visitCMNode(map.item(i));
}
}
public void visitCMGroup(CMGroup group)
{
int op = group.getOperator();
if (op == CMGroup.ALL)
{
sb.append("all"); //$NON-NLS-1$
}
sb.append("("); //$NON-NLS-1$
String separator = ", "; //$NON-NLS-1$
if (op == CMGroup.CHOICE)
{
separator = " | "; //$NON-NLS-1$
}
CMNodeList nodeList = group.getChildNodes();
int size = nodeList.getLength();
for (int i = 0; i < size; i++)
{
visitCMNode(nodeList.item(i));
if (i < size - 1)
{
sb.append(separator);
}
}
sb.append(")"); //$NON-NLS-1$
addOccurenceSymbol(group);
}
public void visitCMElementDeclaration(CMElementDeclaration ed)
{
if (ed == root && !isRootVisited)
{
isRootVisited = true;
CMContent content = ed.getContent();
if (content != null)
{
if (content.getNodeType() != CMNode.GROUP)
{
sb.append("("); //$NON-NLS-1$
visitCMNode(content);
sb.append(")"); //$NON-NLS-1$
}
else
{
visitCMNode(content);
}
}
}
else
{
sb.append(ed.getElementName());
addOccurenceSymbol(ed);
}
}
public void addOccurenceSymbol(CMContent content)
{
int min = content.getMinOccur();
int max = content.getMaxOccur();
if (min == 0)
{
if (max > 1 || max == -1)
{
sb.append("*"); //$NON-NLS-1$
}
else
{
sb.append("?"); //$NON-NLS-1$
}
}
else if (max > 1 || max == -1)
{
sb.append("+"); //$NON-NLS-1$
}
}
}
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