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src/main/java/de/mschae23/grindenchantments/CodecUtils.java
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/* | ||
* Copyright (C) 2024 mschae23 | ||
* | ||
* This file is part of Grind enchantments. | ||
* | ||
* Grind enchantments is free software: you can redistribute it and/or modify | ||
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public License | ||
* along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
*/ | ||
|
||
package de.mschae23.grindenchantments; | ||
|
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import java.util.List; | ||
import com.mojang.datafixers.util.Either; | ||
import com.mojang.serialization.Codec; | ||
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public final class CodecUtils { | ||
private CodecUtils() { | ||
} | ||
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public static <E> Codec<List<E>> listOrSingle(Codec<E> entryCodec) { | ||
return listOrSingle(entryCodec, entryCodec.listOf()); | ||
} | ||
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public static <E> Codec<List<E>> listOrSingle(Codec<E> entryCodec, Codec<List<E>> listCodec) { | ||
return Codec.either(listCodec, entryCodec) | ||
.xmap(either -> either.map(list -> list, List::of), | ||
list -> list.size() == 1 ? Either.right(list.getFirst()) : Either.left(list)); | ||
} | ||
} |
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