package de.fhdw.wtf.common.ast;
   
   import de.fhdw.wtf.common.token.Token;
   
   /**
    * This class represents a syntax object. Every part of the abstract syntax tree will have this class. This class has
    * two {@link Token}. The first and last token of a parsed part. When an object is a synthetic object, both tokens are
    * the {@link de.fhdw.wtf.common.token.DummyToken}.
    */
  public abstract class SyntaxObject implements SyntaxObjectInterface {
  	
  	/**
  	 * generated.
  	 */
  	private static final long serialVersionUID = 7689824529366354331L;
  	
  	/**
  	 * First-Token.
  	 */
  	private Token firstToken;
  	
  	/**
  	 * Last-Token.
  	 */
  	private Token lastToken;
  	
  	/**
  	 * Constructor of {@link SyntaxObject}.
  	 * 
  	 * @param firstToken
  	 *            firstToken
  	 * @param lastToken
  	 *            lastToken
  	 */
  	protected SyntaxObject(final Token firstToken, final Token lastToken) {
  		this.setFirstToken(firstToken);
  		this.setLastToken(lastToken);
  	}
  	
  	// //////////// Projections //////////////////
  	
  	@Override
  	public Token getFirstToken() {
  		return this.firstToken;
  	}
  	
  	@Override
  	public void setFirstToken(final Token firstToken) {
  		this.firstToken = firstToken;
  	}
  	
  	@Override
  	public Token getLastToken() {
  		return this.lastToken;
  	}
  	
  	@Override
  	public void setLastToken(final Token lastToken) {
  		this.lastToken = lastToken;
  	}
  	
  }