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/*
* Copyright (c) 2012, Isode Limited, London, England.
* All rights reserved.
*/
/*
* Copyright (c) 2011, Kevin Smith
* All rights reserved.
*/
package com.isode.stroke.parser.tree;
import java.util.LinkedList;
import com.isode.stroke.elements.Payload;
import com.isode.stroke.parser.PayloadParser;
import com.isode.stroke.parser.PayloadParserFactoryCollection;
/**
* Class for parsing elements of a parser element
*
*/
public class TreeReparser {
/**
* Class representing an element and its handling state
*
*/
private static class ElementState {
ParserElement pe;
boolean state;
public ElementState(ParserElement pe, boolean state) {
super();
this.pe = pe;
this.state = state;
}
}
/**
* Parse the elements under the given root node
* @param root root node, not null
* @param collection payload parser factories, not null
* @return payload created from the elements of the given node, not null
*/
public static Payload parseTree(ParserElement root, PayloadParserFactoryCollection collection) {
PayloadParser parser = collection.getPayloadParserFactory(root.getName(), root.getNamespace(),
root.getAttributes()).createPayloadParser();
LinkedList<ElementState> stack = new LinkedList<ElementState>();
stack.addLast(new ElementState(root, true));
while (!stack.isEmpty()) {
ElementState current = stack.getLast();
stack.removeLast();
if (current.state) {
stack.addLast(new ElementState(current.pe, false));
parser.handleStartElement(current.pe.getName(), current.pe.getNamespace(), current.pe.getAttributes());
for(ParserElement child : current.pe.getAllChildren()) {
stack.addLast(new ElementState(child, true));
}
} else {
parser.handleCharacterData(current.pe.getText());
parser.handleEndElement(current.pe.getName(), current.pe.getNamespace());
}
}
Payload payload = parser.getPayload();
return payload;
}
}
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