Mercurial > hg > graal-compiler
changeset 19656:4726801eedfc
Introduce NestedBooleanOptionValue.
author | Josef Eisl <josef.eisl@jku.at> |
---|---|
date | Thu, 26 Feb 2015 18:04:52 +0100 |
parents | 5b35e0c85d1b |
children | d0600f479309 |
files | graal/com.oracle.graal.options/src/com/oracle/graal/options/NestedBooleanOptionValue.java |
diffstat | 1 files changed, 58 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.graal.options/src/com/oracle/graal/options/NestedBooleanOptionValue.java Thu Feb 26 18:04:52 2015 +0100 @@ -0,0 +1,58 @@ +/* + * 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 + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.graal.options; + +/** + * A nested Boolean {@link OptionValue} 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 NestedBooleanOptionValue extends OptionValue<Boolean> { + private final OptionValue<Boolean> masterOption; + private final Boolean initialValue; + + public NestedBooleanOptionValue(OptionValue<Boolean> masterOption, Boolean initialValue) { + super(null); + this.masterOption = masterOption; + this.initialValue = initialValue; + } + + public OptionValue<Boolean> getMasterOption() { + return masterOption; + } + + @Override + public Boolean getValue() { + Boolean v = super.getValue(); + if (v == null) { + return initialValue && masterOption.getValue(); + } + return v; + } + +}