51 lines
1.8 KiB
Java
51 lines
1.8 KiB
Java
package net.minecraft.commands.execution.tasks;
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import java.util.List;
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import net.minecraft.commands.execution.CommandQueueEntry;
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import net.minecraft.commands.execution.EntryAction;
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import net.minecraft.commands.execution.ExecutionContext;
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import net.minecraft.commands.execution.Frame;
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public class ContinuationTask<T, P> implements EntryAction<T> {
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private final ContinuationTask.TaskProvider<T, P> taskFactory;
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private final List<P> arguments;
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private final CommandQueueEntry<T> selfEntry;
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private int index;
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private ContinuationTask(ContinuationTask.TaskProvider<T, P> taskFactory, List<P> arguments, Frame frame) {
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this.taskFactory = taskFactory;
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this.arguments = arguments;
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this.selfEntry = new CommandQueueEntry<>(frame, this);
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}
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@Override
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public void execute(ExecutionContext<T> executionContext, Frame frame) {
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P object = (P)this.arguments.get(this.index);
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executionContext.queueNext(this.taskFactory.create(frame, object));
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if (++this.index < this.arguments.size()) {
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executionContext.queueNext(this.selfEntry);
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}
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}
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public static <T, P> void schedule(ExecutionContext<T> executionContext, Frame frame, List<P> arguments, ContinuationTask.TaskProvider<T, P> taskProvider) {
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int i = arguments.size();
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switch (i) {
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case 0:
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break;
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case 1:
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executionContext.queueNext(taskProvider.create(frame, (P)arguments.get(0)));
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break;
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case 2:
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executionContext.queueNext(taskProvider.create(frame, (P)arguments.get(0)));
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executionContext.queueNext(taskProvider.create(frame, (P)arguments.get(1)));
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break;
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default:
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executionContext.queueNext((new ContinuationTask<>(taskProvider, arguments, frame)).selfEntry);
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}
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}
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@FunctionalInterface
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public interface TaskProvider<T, P> {
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CommandQueueEntry<T> create(Frame frame, P object);
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}
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}
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