View Javadoc
1   /*
2    * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  package com.sun.codemodel.internal;
27  
28  /**
29   * array component reference.
30   */
31  final class JArrayCompRef extends JExpressionImpl implements JAssignmentTarget {
32      /**
33       * JArray expression upon which this component will be accessed.
34       */
35      private final JExpression array;
36  
37      /**
38       * Integer expression representing index of the component
39       */
40      private final JExpression index;
41  
42      /**
43       * JArray component reference constructor given an array expression
44       * and index.
45       *
46       * @param array
47       *        JExpression for the array upon which
48       *        the component will be accessed,
49       *
50       * @param index
51       *        JExpression for index of component to access
52       */
53      JArrayCompRef(JExpression array, JExpression index) {
54          if ((array == null) || (index == null)) {
55              throw new NullPointerException();
56          }
57          this.array = array;
58          this.index = index;
59      }
60  
61      public void generate(JFormatter f) {
62          f.g(array).p('[').g(index).p(']');
63      }
64  
65      public JExpression assign(JExpression rhs) {
66                  return JExpr.assign(this,rhs);
67      }
68      public JExpression assignPlus(JExpression rhs) {
69                  return JExpr.assignPlus(this,rhs);
70      }
71  }