/*
* Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package org.graalvm.compiler.options;
/**
* A nested Boolean {@link OptionKey} that can be overridden by a {@link #masterOption master
* option}.
* <p>
* <li>If the option is present on the command line the specified value is used.
* <li>Otherwise {@link #getValue} depends on the {@link #masterOption} and evaluates as follows:
* <ul>
* <li>If {@link #masterOption} is set, this value equals to {@link #initialValue}.
* <li>Otherwise, if {@link #masterOption} is {@code false}, this option is {@code false}.
*/
public class NestedBooleanOptionKey extends OptionKey<Boolean> {
private final OptionKey<Boolean> masterOption;
private final Boolean initialValue;
public NestedBooleanOptionKey(OptionKey<Boolean> masterOption, Boolean initialValue) {
super(null);
this.masterOption = masterOption;
this.initialValue = initialValue;
}
public OptionKey<Boolean> getMasterOption() {
return masterOption;
}
@Override
public Boolean getValue(OptionValues options) {
Boolean v = super.getValue(options);
if (v == null) {
return initialValue && masterOption.getValue(options);
}
return v;
}
}