/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.xml.internal.xsom.impl;

import com.sun.xml.internal.xsom.XSContentType;

import com.sun.xml.internal.xsom.XSParticle;

import com.sun.xml.internal.xsom.XSSimpleType;

import com.sun.xml.internal.xsom.visitor.XSContentTypeFunction;

import com.sun.xml.internal.xsom.visitor.XSContentTypeVisitor;

import com.sun.xml.internal.xsom.visitor.XSFunction;

import com.sun.xml.internal.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 Object apply( XSContentTypeFunction function ) {

        return function.empty(this);

    }

    public Object apply( XSFunction 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; }

}