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Add Tristate#toBoolean method

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This commit is contained in:
JeremyStar™ 2024-07-22 13:34:29 +02:00
parent ce97838c12
commit 67909e9cc3
Signed by: JeremyStarTM
GPG key ID: E366BAEF67E4704D
2 changed files with 55 additions and 1 deletions
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36
base/src/main/java/de/staropensource/sosengine/base/exceptions/TristateConversionException.java Normal file
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@ -0,0 +1,36 @@
/*
* STAROPENSOURCE ENGINE SOURCE FILE
* Copyright (c) 2024 The StarOpenSource Engine Contributors
* Licensed under the GNU Affero General Public License v3
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package de.staropensource.sosengine.base.exceptions;
import de.staropensource.sosengine.base.types.Tristate;
/**
* Thrown when converting a {@link Tristate} into a boolean fails.
* <p>
* This exception inherits {@link RuntimeException} on purpose, as sometimes
* you expect or have already validated the {@link Tristate} not being {@link Tristate#UNSET}.
*
* @since v1-alpha2
*/
public class TristateConversionException extends RuntimeException {
public TristateConversionException() {
super("Can't convert Tristate.UNSET into a boolean");
}
}

20
base/src/main/java/de/staropensource/sosengine/base/types/Tristate.java
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@ -19,6 +19,9 @@
package de.staropensource.sosengine.base.types;
import de.staropensource.sosengine.base.exceptions.TristateConversionException;
import org.jetbrains.annotations.NotNull;
/**
* tl;dr just a boolean but it can be UNSET too.
*
@ -45,5 +48,20 @@ public enum Tristate {
*
* @since v1-alpha1
*/
FALSE
FALSE;
/**
* Converts a {@link Tristate} into a boolean.
*
* @return booleanized {@link Tristate}
* @throws TristateConversionException when encountering {@link #UNSET}.
* @since v1-alpha2
*/
public static boolean toBoolean(@NotNull Tristate tristate) {
return switch (tristate) {
case UNSET -> throw new TristateConversionException();
case TRUE -> true;
case FALSE -> false;
};
}
}