EmptyExpression.java

/*******************************************************************************
 * Copyright (c) 2009 xored software, Inc.  
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html  
 *
 * Contributors:
 *     xored software, Inc. - initial API and Implementation (Vladimir Belov)
 *******************************************************************************/

package org.eclipse.dltk.javascript.ast;

import org.eclipse.dltk.ast.ASTVisitor;
import org.eclipse.dltk.javascript.internal.parser.JSLiterals;

/**
 * This class is used to represented missing items in the array literal AND
 * omitted parts of the "for(;;)" loop statement.
 */
public class EmptyExpression extends Expression {

	public EmptyExpression(JSNode parent) {
		super(parent);

		setStart(-1);
		setEnd(-1);
	}

	/**
	 * @see org.eclipse.dltk.ast.ASTNode#traverse(org.eclipse.dltk.ast.ASTVisitor)
	 */
	@Override
	public void traverse(ASTVisitor visitor) throws Exception {
		if (visitor.visit(this)) {
			visitor.endvisit(this);
		}
	}

	@Override
	public String toSourceString(String indentationString) {
		return JSLiterals.EMPTY;
	}

}