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67 lines
2.3 KiB
Java
67 lines
2.3 KiB
Java
/*
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* WorldEdit, a Minecraft world manipulation toolkit
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* Copyright (C) sk89q <http://www.sk89q.com>
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* Copyright (C) WorldEdit team and contributors
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.sk89q.worldedit.registry;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import javax.annotation.Nullable;
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import static com.google.common.base.Preconditions.checkState;
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import static java.util.Objects.requireNonNull;
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public final class NamespacedRegistry<V> {
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private static final String MINECRAFT_NAMESPACE = "minecraft";
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private final Map<String, V> map = new HashMap<>();
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public @Nullable V get(final String key) {
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checkState(key.equals(key.toLowerCase()), "key must be lowercase");
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return this.map.get(this.orDefaultNamespace(key));
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}
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public V register(final String key, final V value) {
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requireNonNull(key, "key");
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requireNonNull(value, "value");
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checkState(key.indexOf(':') > -1, "key is not namespaced");
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checkState(key.equals(key.toLowerCase()), "key must be lowercase");
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checkState(!this.map.containsKey(key), "key %s already has an entry", key);
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this.map.put(key, value);
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return value;
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}
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public Set<String> keySet() {
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return Collections.unmodifiableSet(this.map.keySet());
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}
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public Collection<V> values() {
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return Collections.unmodifiableCollection(this.map.values());
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}
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private String orDefaultNamespace(final String key) {
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if (key.indexOf(':') == -1) {
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return MINECRAFT_NAMESPACE + ':' + key;
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}
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return key;
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}
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}
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