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Java > Open Source Codes > org > jruby > internal > runtime > ReadonlyAccessor


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
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10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
15  * Copyright (C) 2005 Charles O Nutter <headius@headius.com>
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17  * Alternatively, the contents of this file may be used under the terms of
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29 package org.jruby.internal.runtime;
30
31 import org.jruby.runtime.IAccessor;
32 import org.jruby.runtime.builtin.IRubyObject;
33
34 /**
35  *
36  * @author jpetersen
37  */
38 public class ReadonlyAccessor implements IAccessor {
39     private String JavaDoc name;
40     private IAccessor accessor;
41
42     public ReadonlyAccessor(String JavaDoc name, IAccessor accessor) {
43         assert name != null;
44         assert accessor != null;
45
46         this.name = name;
47         this.accessor = accessor;
48     }
49
50     public IRubyObject getValue() {
51         return accessor.getValue();
52     }
53
54     public IRubyObject setValue(IRubyObject newValue) {
55         assert newValue != null;
56
57         throw newValue.getRuntime().newNameError(name + " is a read-only variable", name);
58     }
59 }
60
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