/*

 * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.

 * 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.  Sun designates this

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

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.codemodel.internal;

/**

 * array component reference.

 */

final class JArrayCompRef extends JExpressionImpl implements JAssignmentTarget {

    /**

     * JArray expression upon which this component will be accessed.

     */

    private final JExpression array;

    /**

     * Integer expression representing index of the component

     */

    private final JExpression index;

    /**

     * JArray component reference constructor given an array expression

     * and index.

     *

     * @param array

     *        JExpression for the array upon which

     *        the component will be accessed,

     *

     * @param index

     *        JExpression for index of component to access

     */

    JArrayCompRef(JExpression array, JExpression index) {

        if ((array == null) || (index == null)) {

            throw new NullPointerException();

        }

        this.array = array;

        this.index = index;

    }

    public void generate(JFormatter f) {

        f.g(array).p('[').g(index).p(']');

    }

    public JExpression assign(JExpression rhs) {

                return JExpr.assign(this,rhs);

    }

    public JExpression assignPlus(JExpression rhs) {

                return JExpr.assignPlus(this,rhs);

    }

}