01: /*BEGIN_COPYRIGHT_BLOCK
02: *
03: * Copyright (c) 2001-2007, JavaPLT group at Rice University (javaplt@rice.edu)
04: * All rights reserved.
05: *
06: * Redistribution and use in source and binary forms, with or without
07: * modification, are permitted provided that the following conditions are met:
08: * * Redistributions of source code must retain the above copyright
09: * notice, this list of conditions and the following disclaimer.
10: * * Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
14: * names of its contributors may be used to endorse or promote products
15: * derived from this software without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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24: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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26: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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34: *
35: * END_COPYRIGHT_BLOCK*/
36:
37: package edu.rice.cs.drjava.config;
38:
39: /** Class defining all configuration options with values of type Boolean.
40: * @version $Id: BooleanOption.java 4255 2007-08-28 19:17:37Z mgricken $
41: */
42: public class BooleanOption extends Option<Boolean> {
43:
44: /** @param key The name of this option.*/
45: public BooleanOption(String key, Boolean def) {
46: super (key, def);
47: }
48:
49: /**
50: * @param s The String to be parsed.
51: * @return A Boolean instance represented by "s".
52: * @exception IllegalArgumentException if "s" is
53: * not one of the Strings "true" and "false".
54: */
55: public Boolean parse(String s) {
56: s = s.trim().toLowerCase();
57: if (s.equals("true"))
58: return Boolean.TRUE;
59: if (s.equals("false"))
60: return Boolean.FALSE;
61: else
62: throw new OptionParseException(name, s,
63: "Must be a String representing a boolean value.");
64: }
65: }
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