TagNode.java

package structures;

/**
 * This class encapsulates a tag node with fields for tag/text, first child and sibling.
 * 
 * @author Sesh Venugopal
 *
 */
public class TagNode {
	/**
	 * Tag or text. If tag, only the tag name is stored,
	 * but NOT the '<' or '>'. For example, if the tag
	 * is "<em>", then only "em" is stored.
	 */
	String tag;
	
	/**
	 * First child of this node
	 */
	TagNode firstChild;
	
	/**
	 * Sibling of this node
	 */
	TagNode sibling;
	
	/**
	 * Initializes this tag node with tag/txt, first child, and sibling
	 * 
	 * @param tag Tag or text
	 * @param firstChild First child
	 * @param sibling Sibling
	 */
	public TagNode(String tag, TagNode firstChild, TagNode sibling) {
		this.tag = tag;
		this.firstChild = firstChild;
		this.sibling = sibling;
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	public String toString() {
		if (firstChild != null) {
			return "<" + tag + ">";
		} else {
			return tag;
		}
	}
}