Mercurial > hg > graal-jvmci-8

comparison jvmci/jdk.vm.ci.options/src/jdk/vm/ci/options/NestedBooleanOptionValue.java @ 22672:1bbd4a7c274b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Rename jdk.internal.jvmci to jdk.vm.ci
author Tom Rodriguez <tom.rodriguez@oracle.com>
date Thu, 08 Oct 2015 17:28:41 -0700
parents jvmci/jdk.internal.jvmci.options/src/jdk/internal/jvmci/options/NestedBooleanOptionValue.java@0e095e2c24e2
children
comparison
equal deleted inserted replaced
22671:97f30e4d0e95 22672:1bbd4a7c274b
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 jdk.vm.ci.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 }