mirror of
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126 lines
5.1 KiB
Java
126 lines
5.1 KiB
Java
/*
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* Copyright (c) 2019-2022 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.geyser.registry;
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import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
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import org.geysermc.geyser.registry.loader.RegistryLoader;
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import java.util.Map;
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import java.util.function.Supplier;
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/**
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* A versioned, mapped registry. Like {@link SimpleMappedRegistry}, the {@link Map} interface is
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* not able to be specified here, but unlike it, it does not have support for specialized
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* instances, and ONLY supports {@link Int2ObjectMap} for optimal performance to prevent boxing
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* of integers.
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*
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* @param <V> the value
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*/
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public class VersionedRegistry<V> extends AbstractMappedRegistry<Integer, V, Int2ObjectMap<V>> {
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protected <I> VersionedRegistry(I input, RegistryLoader<I, Int2ObjectMap<V>> registryLoader) {
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super(input, registryLoader);
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}
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/**
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* Gets the closest value for the specified version. Only
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* returns versions higher up than the specified if one
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* does not exist for the given one. Useful in the event
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* that you want to get a resource which is guaranteed for
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* older versions, but not on newer ones.
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*
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* @param version the version
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* @return the closest value for the specified version
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*/
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public V forVersion(int version) {
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Int2ObjectMap.Entry<V> current = null;
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for (Int2ObjectMap.Entry<V> entry : this.mappings.int2ObjectEntrySet()) {
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int currentVersion = entry.getIntKey();
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if (version < currentVersion) {
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continue;
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}
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if (version == currentVersion) {
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return entry.getValue();
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}
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if (current == null || current.getIntKey() < currentVersion) {
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// This version is newer and should be prioritized
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current = entry;
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}
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}
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return current == null ? null : current.getValue();
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}
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/**
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* Creates a new versioned registry with the given {@link RegistryLoader}. The
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* input type is not specified here, meaning the loader return type is either
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* predefined, or the registry is populated at a later point.
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*
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* @param registryLoader the registry loader
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* @param <I> the input
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* @param <V> the map value
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* @return a new registry with the given RegistryLoader
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*/
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public static <I, V> VersionedRegistry<V> create(RegistryLoader<I, Int2ObjectMap<V>> registryLoader) {
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return new VersionedRegistry<>(null, registryLoader);
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}
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/**
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* Creates a new versioned registry with the given {@link RegistryLoader} and input.
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*
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* @param registryLoader the registry loader
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* @param <I> the input
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* @param <V> the map value
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* @return a new registry with the given RegistryLoader
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*/
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public static <I, V> VersionedRegistry<V> create(I input, RegistryLoader<I, Int2ObjectMap<V>> registryLoader) {
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return new VersionedRegistry<>(input, registryLoader);
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}
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/**
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* Creates a new versioned registry with the given {@link RegistryLoader} supplier.
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* The input type is not specified here, meaning the loader return type is either
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* predefined, or the registry is populated at a later point.
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*
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* @param registryLoader the registry loader
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* @param <I> the input
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* @param <V> the map value
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* @return a new registry with the given RegistryLoader supplier
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*/
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public static <I, V> VersionedRegistry< V> create(Supplier<RegistryLoader<I, Int2ObjectMap<V>>> registryLoader) {
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return new VersionedRegistry<>(null, registryLoader.get());
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}
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/**
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* Creates a new versioned registry with the given {@link RegistryLoader} supplier and input.
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*
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* @param registryLoader the registry loader
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* @param <I> the input
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* @param <V> the map value
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* @return a new registry with the given RegistryLoader supplier
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*/
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public static <I, V> VersionedRegistry< V> create(I input, Supplier<RegistryLoader<I, Int2ObjectMap<V>>> registryLoader) {
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return new VersionedRegistry<>(input, registryLoader.get());
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}
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} |