cuchaz.enigma.translation.Translator.java Source code

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Here is the source code for cuchaz.enigma.translation.Translator.java

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/*******************************************************************************
 * Copyright (c) 2015 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * <p>
 * Contributors:
 * Jeff Martin - initial API and implementation
 ******************************************************************************/

package cuchaz.enigma.translation;

import com.google.common.collect.HashMultimap;
import com.google.common.collect.Multimap;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

public interface Translator {
    <T extends Translatable> T translate(T translatable);

    default <T extends Translatable> Collection<T> translate(Collection<T> translatable) {
        return translatable.stream().map(this::translate).collect(Collectors.toList());
    }

    default <T extends Translatable, V> Map<T, V> translateKeys(Map<T, V> translatable) {
        Map<T, V> result = new HashMap<>(translatable.size());
        for (Map.Entry<T, V> entry : translatable.entrySet()) {
            result.put(translate(entry.getKey()), entry.getValue());
        }
        return result;
    }

    default <K extends Translatable, V extends Translatable> Map<K, V> translate(Map<K, V> translatable) {
        Map<K, V> result = new HashMap<>(translatable.size());
        for (Map.Entry<K, V> entry : translatable.entrySet()) {
            result.put(translate(entry.getKey()), translate(entry.getValue()));
        }
        return result;
    }

    default <K extends Translatable, V extends Translatable> Multimap<K, V> translate(Multimap<K, V> translatable) {
        Multimap<K, V> result = HashMultimap.create(translatable.size(), 1);
        for (Map.Entry<K, Collection<V>> entry : translatable.asMap().entrySet()) {
            result.putAll(translate(entry.getKey()), translate(entry.getValue()));
        }
        return result;
    }
}