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


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
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13  *
14  * Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se>
15  * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de>
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29 package org.jruby.internal.runtime;
30
31 import org.jruby.Ruby;
32 import org.jruby.runtime.IAccessor;
33 import org.jruby.runtime.builtin.IRubyObject;
34
35 /**
36  *
37  * @author jpetersen
38  */
39 public class UndefinedAccessor implements IAccessor {
40     private final Ruby runtime;
41     private final GlobalVariable globalVariable;
42     private final String JavaDoc notInitializedWarning;
43
44     /**
45      * Constructor for UndefinedAccessor.
46      */
47     public UndefinedAccessor(Ruby runtime, GlobalVariable globalVariable, String JavaDoc name) {
48         assert runtime != null;
49         assert globalVariable != null;
50         assert name != null;
51
52         this.runtime = runtime;
53         this.globalVariable = globalVariable;
54         this.notInitializedWarning = "global variable `" + name + "' not initialized";
55     }
56
57     /**
58      * @see org.jruby.runtime.IAccessor#getValue()
59      */
60     public IRubyObject getValue() {
61         runtime.getWarnings().warning(notInitializedWarning);
62         return runtime.getNil();
63     }
64
65     /**
66      * @see org.jruby.runtime.IAccessor#setValue(IRubyObject)
67      */
68     public IRubyObject setValue(IRubyObject newValue) {
69         assert newValue != null;
70         globalVariable.setAccessor(new ValueAccessor(newValue));
71         return newValue;
72     }
73 }
74
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