/*
 * Copyright 2005-2006 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);
    }
}