Mercurial > hg > truffle
comparison graal/com.oracle.jvmci.options/src/com/oracle/jvmci/options/NestedBooleanOptionValue.java @ 21554:b1530a6cce8c
renamed com.oracle.graal.[debug|options|hotspotvmconfig]* modules to com.oracle.jvmci.[debug|options|hotspotvmconfig]* modules (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Tue, 26 May 2015 23:21:15 +0200 |
parents | graal/com.oracle.graal.options/src/com/oracle/graal/options/NestedBooleanOptionValue.java@4726801eedfc |
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21553:0910a9497b02 | 21554:b1530a6cce8c |
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1 /* | |
2 * Copyright (c) 2015, 2015, 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. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 */ | |
23 package com.oracle.jvmci.options; | |
24 | |
25 /** | |
26 * A nested Boolean {@link OptionValue} that can be overridden by a {@link #masterOption master | |
27 * option}. | |
28 * <p> | |
29 * <li>If the option is present on the command line the specified value is used. | |
30 * <li>Otherwise {@link #getValue()} depends on the {@link #masterOption} and evaluates as follows: | |
31 * <ul> | |
32 * <li>If {@link #masterOption} is set, this value equals to {@link #initialValue}. | |
33 * <li>Otherwise, if {@link #masterOption} is {@code false}, this option is {@code false}. | |
34 */ | |
35 public class NestedBooleanOptionValue extends OptionValue<Boolean> { | |
36 private final OptionValue<Boolean> masterOption; | |
37 private final Boolean initialValue; | |
38 | |
39 public NestedBooleanOptionValue(OptionValue<Boolean> masterOption, Boolean initialValue) { | |
40 super(null); | |
41 this.masterOption = masterOption; | |
42 this.initialValue = initialValue; | |
43 } | |
44 | |
45 public OptionValue<Boolean> getMasterOption() { | |
46 return masterOption; | |
47 } | |
48 | |
49 @Override | |
50 public Boolean getValue() { | |
51 Boolean v = super.getValue(); | |
52 if (v == null) { | |
53 return initialValue && masterOption.getValue(); | |
54 } | |
55 return v; | |
56 } | |
57 | |
58 } |