126 lines
4.1 KiB
Java
126 lines
4.1 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2018.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.fml;
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import java.util.Iterator;
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import java.util.Spliterator;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.concurrent.ConcurrentMap;
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import java.util.function.Consumer;
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import java.util.function.Predicate;
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import java.util.function.Supplier;
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import java.util.stream.Stream;
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import java.util.stream.StreamSupport;
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public class InterModComms
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{
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public static final class IMCMessage {
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private final String modId;
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private final String method;
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private final Supplier<?> thing;
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IMCMessage(String modId, String method, Supplier<?> thing)
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{
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this.modId = modId;
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this.method = method;
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this.thing = thing;
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}
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public final String getModId() {
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return this.modId;
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}
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public final String getMethod() {
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return this.method;
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}
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@SuppressWarnings("unchecked")
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public final <T> Supplier<T> getMessageSupplier() {
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return (Supplier<T>)this.thing;
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}
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}
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private static ConcurrentMap<String, ConcurrentLinkedQueue<IMCMessage>> containerQueues = new ConcurrentHashMap<>();
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public static boolean sendTo(final String modId, final String method, final Supplier<?> thing) {
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if (!ModList.get().isLoaded(modId)) return false;
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containerQueues.computeIfAbsent(modId, k->new ConcurrentLinkedQueue<>()).add(new IMCMessage(modId, method, thing));
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return true;
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}
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public static Stream<IMCMessage> getMessages(final String modId, final Predicate<String> methodMatcher) {
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ConcurrentLinkedQueue<IMCMessage> queue = containerQueues.get(modId);
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if (queue == null) return Stream.empty();
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return StreamSupport.stream(new QueueFilteringSpliterator(queue, methodMatcher), false);
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}
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public static Stream<IMCMessage> getMessages(final String modId) {
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return getMessages(modId, s->Boolean.TRUE);
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}
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private static class QueueFilteringSpliterator implements Spliterator<IMCMessage>
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{
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private final ConcurrentLinkedQueue<IMCMessage> queue;
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private final Predicate<String> methodFilter;
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private final Iterator<IMCMessage> iterator;
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public QueueFilteringSpliterator(final ConcurrentLinkedQueue<IMCMessage> queue, final Predicate<String> methodFilter) {
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this.queue = queue;
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this.iterator = queue.iterator();
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this.methodFilter = methodFilter;
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}
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@Override
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public int characteristics() {
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return Spliterator.CONCURRENT | Spliterator.NONNULL | Spliterator.ORDERED;
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}
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@Override
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public long estimateSize() {
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return queue.size();
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}
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@Override
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public boolean tryAdvance(final Consumer<? super IMCMessage> action)
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{
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IMCMessage next;
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do
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{
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if (!iterator.hasNext())
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{
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return false;
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}
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next = this.iterator.next();
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}
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while (!methodFilter.test(next.method));
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action.accept(next);
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this.iterator.remove();
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return true;
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}
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@Override
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public Spliterator<IMCMessage> trySplit() {
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return null;
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}
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}
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}
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