/*
 * Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.xsom.impl;

import com.sun.xml.xsom.XSContentType;
import com.sun.xml.xsom.XSParticle;
import com.sun.xml.xsom.XSSimpleType;
import com.sun.xml.xsom.visitor.XSContentTypeFunction;
import com.sun.xml.xsom.visitor.XSContentTypeVisitor;
import com.sun.xml.xsom.visitor.XSFunction;
import com.sun.xml.xsom.visitor.XSVisitor;

/**
 * 
 * @author
 *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
 */
public class EmptyImpl extends ComponentImpl implements ContentTypeImpl {
    public EmptyImpl() { super(null,null,null,null); }
    
    public XSSimpleType asSimpleType()  { return null; }
    public XSParticle asParticle()      { return null; }
    public XSContentType asEmpty()      { return this; }
    
    public <T> T apply( XSContentTypeFunction<T> function ) {
        return function.empty(this);
    }
    public <T> T apply( XSFunction<T> function ) {
        return function.empty(this);
    }
    public void visit( XSVisitor visitor ) {
        visitor.empty(this);
    }
    public void visit( XSContentTypeVisitor visitor ) {
        visitor.empty(this);
    }
    
    public XSContentType getContentType() { return this; }
}