package de.fhdw.wtf.common.token;
   
   /**
    * This token contains one identifier - e.g. a class identifier.
    * 
    */
   public final class IdentifierToken extends MultiCharToken {
   	
   	/**
  	 * generated.
  	 */
  	private static final long serialVersionUID = -2521207444154441984L;
  	
  	/**
  	 * Private Constructor for IdentifierToken. Use create(...)-Factory instead!
  	 * 
  	 * @param identifier
  	 *            initial identifier string
  	 * @param position
  	 *            start position of this token in the original input.
  	 */
  	private IdentifierToken(final String identifier, final Position position) {
  		super(identifier, position);
  	}
  	
  	/**
  	 * Factory for a {@link IdentifierToken}.
  	 * 
  	 * @param identifier
  	 *            initial identifier string
  	 * @param position
  	 *            start position of this token in the original input.
  	 * @return a new instance of this token
  	 */
  	public static IdentifierToken create(final String identifier, final Position position) {
  		return new IdentifierToken(identifier, position);
  	}
  	
  	@Override
  	public boolean isIdentifierToken() {
  		return true;
  	}
  	
  	/**
  	 * Identifier as string representation.
  	 * 
  	 * @return identifier represented by this token
  	 */
  	public String getIdentifier() {
  		return this.getTokenString();
  	}
  	
  	@Override
  	protected boolean equalsTemplate(final Token t) {
  		if (t.isIdentifierToken()) {
  			final IdentifierToken ct = (IdentifierToken) t;
  			return this.getIdentifier().equals(ct.getIdentifier());
  		}
  		return false;
  	}
  	
  	@Override
  	protected int hashCodeTemplate() {
  		return this.getIdentifier().hashCode();
  	}
  	
  	@Override
  	public boolean equals(final Object o) {
  		if (o instanceof IdentifierToken) {
  			return super.equals(o);
  		}
  		return false;
  	}
  	
  	@Override
  	public int hashCode() {
  		return super.hashCode();
  	}
  	
  }