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worldedit-core/src/main/java/com/sk89q/worldedit/registry/NamespacedRegistry.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * WorldEdit, a Minecraft world manipulation toolkit | ||
| * Copyright (C) sk89q <http://www.sk89q.com> | ||
| * Copyright (C) WorldEdit team and contributors | ||
| * | ||
| * This program 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 <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
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| package com.sk89q.worldedit.registry; | ||
|
|
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| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
|
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| import javax.annotation.Nullable; | ||
|
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| import static com.google.common.base.Preconditions.checkState; | ||
| import static java.util.Objects.requireNonNull; | ||
|
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| public final class NamespacedRegistry<V> { | ||
| private static final String MINECRAFT_NAMESPACE = "minecraft"; | ||
| private final Map<String, V> map = new HashMap<>(); | ||
|
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| public @Nullable V get(final String key) { | ||
| checkState(key.equals(key.toLowerCase()), "key must be lowercase"); | ||
| return this.map.get(this.orDefaultNamespace(key)); | ||
| } | ||
|
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| public V register(final String key, final V value) { | ||
| requireNonNull(key, "key"); | ||
| requireNonNull(value, "value"); | ||
| checkState(key.indexOf(':') > -1, "key is not namespaced"); | ||
| checkState(key.equals(key.toLowerCase()), "key must be lowercase"); | ||
| checkState(!this.map.containsKey(key), "key %s already has an entry", key); | ||
| this.map.put(key, value); | ||
| return value; | ||
| } | ||
|
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| public Set<String> keySet() { | ||
| return Collections.unmodifiableSet(this.map.keySet()); | ||
| } | ||
|
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| public Collection<V> values() { | ||
| return Collections.unmodifiableCollection(this.map.values()); | ||
| } | ||
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| private String orDefaultNamespace(final String key) { | ||
| if (key.indexOf(':') == -1) { | ||
| return MINECRAFT_NAMESPACE + ':' + key; | ||
| } | ||
| return key; | ||
| } | ||
| } |
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