/*

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

 * 

 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.

 * 

 * The contents of this file are subject to the terms of either the GNU

 * General Public License Version 2 only ("GPL") or the Common

 * Development and Distribution License("CDDL") (collectively, the

 * "License"). You may not use this file except in compliance with the

 * License. You can obtain a copy of the License at

 * http://www.netbeans.org/cddl-gplv2.html

 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

 * specific language governing permissions and limitations under the

 * License.  When distributing the software, include this License Header

 * Notice in each file and include the License file at

 * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this

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

 * by Sun in the GPL Version 2 section of the License file that

 * accompanied this code. If applicable, add the following below the

 * License Header, with the fields enclosed by brackets [] replaced by

 * your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 * 

 * If you wish your version of this file to be governed by only the CDDL

 * or only the GPL Version 2, indicate your decision by adding

 * "[Contributor] elects to include this software in this distribution

 * under the [CDDL or GPL Version 2] license." If you do not indicate a

 * single choice of license, a recipient has the option to distribute

 * your version of this file under either the CDDL, the GPL Version 2 or

 * to extend the choice of license to its licensees as provided above.

 * However, if you add GPL Version 2 code and therefore, elected the GPL

 * Version 2 license, then the option applies only if the new code is

 * made subject to such option by the copyright holder.

 * 

 * Contributor(s):

 * 

 * Portions Copyrighted 2008 Sun Microsystems, Inc.

 */

package org.netbeans.modules.ada.editor.ast.nodes;

import org.netbeans.modules.ada.editor.ast.nodes.visitors.Visitor;

/**

 *  Represents an reference to a variable or class instantiation.

 *  <pre>e.g.<pre> 

 *  

 *  TODO: to verify the use for ACCESS attribute

 */

public class Reference extends Expression {

    /**

     *  the expressions can be either variable or class instantiation 

     *  note that other expressions can not be assigned to this field

     */

    private Expression expression;

    private Reference(int start, int end, Expression expression) {

        super(start, end);

        this.expression = expression;

    }

    public Reference(int start, int end, NameBase variable) {

        this(start, end, (Expression)variable);

    }

    public Reference(int start, int end, PackageInstanceCreation packageInstanciation) {

        this(start, end, (Expression) packageInstanciation);

    }

    /**

     * Returns the expression of this expression statement.

     * 

     * @return the expression node

     */

    public Expression getExpression() {

        return expression;

    }

    @Override

    public void accept(Visitor visitor) {

        visitor.visit(this);

    }

}