mirror of https://github.com/GeyserMC/Geyser.git
99 lines
3.4 KiB
Java
99 lines
3.4 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 org.geysermc.geyser.registry.loader.RegistryLoader;
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import javax.annotation.Nullable;
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import java.util.Map;
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import java.util.OptionalInt;
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import java.util.function.ToIntFunction;
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/**
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* An abstract registry holding a map of various registrations as defined by {@link M}.
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* The M represents the map class, which can be anything that extends {@link Map}. The
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* {@link K} and {@link V} generics are the key and value respectively.
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*
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* @param <K> the key
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* @param <V> the value
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* @param <M> the map
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*/
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public abstract class AbstractMappedRegistry<K, V, M extends Map<K, V>> extends Registry<M> {
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protected <I> AbstractMappedRegistry(I input, RegistryLoader<I, M> registryLoader) {
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super(input, registryLoader);
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}
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/**
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* Returns the value registered by the given key.
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*
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* @param key the key
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* @return the value registered by the given key.
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*/
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@Nullable
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public V get(K key) {
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return this.mappings.get(key);
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}
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/**
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* Returns and maps the value by the given key if present.
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*
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* @param key the key
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* @param mapper the mapper
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* @return the mapped value from the given key if present
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*/
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public OptionalInt map(K key, ToIntFunction<? super V> mapper) {
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V value = this.get(key);
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if (value == null) {
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return OptionalInt.empty();
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} else {
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return OptionalInt.of(mapper.applyAsInt(value));
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}
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}
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/**
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* Returns the value registered by the given key or the default value
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* specified if null.
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*
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* @param key the key
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* @param defaultValue the default value
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* @return the value registered by the given key or the default value
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* specified if null.
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*/
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public V getOrDefault(K key, V defaultValue) {
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return this.mappings.getOrDefault(key, defaultValue);
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}
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/**
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* Registers a new value into this registry with the given key.
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*
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* @param key the key
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* @param value the value
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* @return a new value into this registry with the given key.
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*/
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public V register(K key, V value) {
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return this.mappings.put(key, value);
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}
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} |