01: /***** BEGIN LICENSE BLOCK *****
02: * Version: CPL 1.0/GPL 2.0/LGPL 2.1
03: *
04: * The contents of this file are subject to the Common Public
05: * License Version 1.0 (the "License"); you may not use this file
06: * except in compliance with the License. You may obtain a copy of
07: * the License at http://www.eclipse.org/legal/cpl-v10.html
08: *
09: * Software distributed under the License is distributed on an "AS
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>
16: *
17: * Alternatively, the contents of this file may be used under the terms of
18: * either of the GNU General Public License Version 2 or later (the "GPL"),
19: * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20: * in which case the provisions of the GPL or the LGPL are applicable instead
21: * of those above. If you wish to allow use of your version of this file only
22: * under the terms of either the GPL or the LGPL, and not to allow others to
23: * use your version of this file under the terms of the CPL, indicate your
24: * decision by deleting the provisions above and replace them with the notice
25: * and other provisions required by the GPL or the LGPL. If you do not delete
26: * the provisions above, a recipient may use your version of this file under
27: * the terms of any one of the CPL, the GPL or the LGPL.
28: ***** END LICENSE BLOCK *****/package org.jruby.internal.runtime;
29:
30: import org.jruby.runtime.IAccessor;
31: import org.jruby.runtime.builtin.IRubyObject;
32:
33: /**
34: *
35: * @author jpetersen
36: */
37: public class ReadonlyAccessor implements IAccessor {
38: private String name;
39: private IAccessor accessor;
40:
41: public ReadonlyAccessor(String name, IAccessor accessor) {
42: assert name != null;
43: assert accessor != null;
44:
45: this .name = name;
46: this .accessor = accessor;
47: }
48:
49: public IRubyObject getValue() {
50: return accessor.getValue();
51: }
52:
53: public IRubyObject setValue(IRubyObject newValue) {
54: assert newValue != null;
55:
56: throw newValue.getRuntime().newNameError(
57: name + " is a read-only variable", name);
58: }
59: }
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