/*
Copyright (c) 2011 Mizar Tools Contributors (mizartools.org)
Licensed 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.
*/
/* Contributors :
* 2011-02-04 Marco Riccardi - initial implementation
* 2011-03-25 Marco Riccardi - implementation of visitor pattern
*
*/
package org.mizartools.system.xml;
import java.util.LinkedList;
import org.mizartools.system.ElementParseException;
import org.mizartools.system.IElement;
import org.mizartools.system.INode;
import org.mizartools.utility.xml.XMLElement;
public class BlockThesis implements IElement {
public static final String NAME = "BlockThesis";
private INode parentNode;
private LinkedList<Thesis> thesisList = new LinkedList<Thesis>();
private Formula formula = null;
private BlockThesis(INode parentNode){
this.parentNode = parentNode;
}
public INode getParentNode() {
return parentNode;
}
public static BlockThesis newInstance(INode parentNode, LinkedList<XMLElement> xmlElementList) throws ElementParseException {
BlockThesis blockThesis = new BlockThesis(parentNode);
XMLElement xmlElement = xmlElementList.poll();
if (!xmlElement.getName().equals(NAME)){
throw new ElementParseException(ElementParseException.NOT_VALID_ELEMENT, "XMLElement is a " + xmlElement.getName() + " not a " + NAME, xmlElementList);
}
if (!xmlElement.isEmpty()){
while (true){
xmlElement = xmlElementList.peek();
if (xmlElement == null){
throw new ElementParseException(ElementParseException.UNEXPECTED_END_OF_FILE, "Unexpected end of XMLElement list");
}
if (xmlElement.getName().equals(NAME) && xmlElement.isEndElement()){
xmlElement = xmlElementList.poll();
break;
}
if (xmlElement.getName().equals("Thesis")){
blockThesis.thesisList.add(Thesis.newInstance(blockThesis, xmlElementList));
} else if (Formula.isFormula(xmlElement.getName())){
if (blockThesis.formula == null) {
blockThesis.formula = Formula.newInstance(blockThesis, xmlElementList);
} else {
throw new ElementParseException(ElementParseException.DUPLICATE_ELEMENT, "XMLElement list contains a duplicated <Formula> in element " + NAME, xmlElementList);
}
} else
throw new ElementParseException(ElementParseException.NOT_VALID_ELEMENT, "The XMLElement " + xmlElement.getName() + " is not valid in " + NAME, xmlElementList);
}
}
return blockThesis;
}
public LinkedList<XMLElement> getXMLElementList() {
LinkedList<XMLElement> xmlElementList = new LinkedList<XMLElement>();
XMLElement xmlElement = new XMLElement(NAME);
boolean isEmpty = !(!thesisList.isEmpty()
|| formula != null);
xmlElement.setEmpty(isEmpty);
xmlElementList.add(xmlElement);
for (Thesis thesis : this.thesisList){
xmlElementList.addAll(thesis.getXMLElementList());
}
if (this.formula != null){
xmlElementList.addAll(this.formula.getXMLElementList());
}
if (!isEmpty) {
xmlElement = new XMLElement(NAME);
xmlElement.setEndElement(true);
xmlElementList.add(xmlElement);
}
return xmlElementList;
}
public LinkedList<Thesis> getThesisList(){
return thesisList;
}
public Formula getFormula(){
return formula;
}
@Override
public void accept(Visitor visitor) {
if (visitor.visit(this)) {
for(Thesis thesis: this.thesisList) {
thesis.accept(visitor);
}
}
visitor.endVisit(this);
}
@Override
public String toString(){
ToStringVisitor toStringVisitor = new ToStringVisitor();
this.accept(toStringVisitor);
return toStringVisitor.toString();
}
}