/*******************************************************************************
 *  Copyright (c) 2010 Association for Decentralized Information Management in
 *  Industry THTH ry.
 *  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:
 *      VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.spreadsheet.solver.formula.parser.ast;

import java.io.Serializable;

public class AstNothing implements AstValue {
	
	private static final long serialVersionUID = 4968570232015650370L;
	
	public static final AstNothing INSTANCE = new AstNothing();
	public static final Serializable NOTHING = new Serializable() {
		private static final long serialVersionUID = -3704142714710129215L;
	};
	
	@Override
	public <T> T accept(AstValueVisitor<T> v) {
		return v.visit(this);
	}
}