import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.jspecify.annotations.Nullable;

/** Emulation of Uninterruptibles in GWT. */
public final class Uninterruptibles {

  private Uninterruptibles() {}

  @CanIgnoreReturnValue
  public static <V extends @Nullable Object> V getUninterruptibly(Future<V> future)
      throws ExecutionException {
    try {

     * interrupt before, during, or after runInterruptibly() (unless it produced an
     * InterruptedException caught above) can linger and affect listeners.
     */
  }

  /**
   * Called before runInterruptibly - if true, runInterruptibly and afterRanInterruptibly will not
   * be called.
   */
  abstract boolean isDone();

  /**

  }

  static final class SlowChannel extends AbstractInterruptibleChannel {
    final CountDownLatch exitClose = new CountDownLatch(1);

    @Override
    protected void implCloseChannel() {
      Uninterruptibles.awaitUninterruptibly(exitClose);
    }

    void doBegin() {
      super.begin();
    }
  }

  }

  static final class SlowChannel extends AbstractInterruptibleChannel {
    final CountDownLatch exitClose = new CountDownLatch(1);

    @Override
    protected void implCloseChannel() {
      Uninterruptibles.awaitUninterruptibly(exitClose);
    }

    void doBegin() {
      super.begin();
    }
  }

    } else {
      assertTrue(desc, isBoolean(method));
    }

    switch (method.getExceptionTypes().length) {
      case 0:
        assertFalse(desc, isInterruptible(method));
        break;
      case 1:
        assertTrue(desc, isInterruptible(method));
        break;
      default:
        fail(desc);
    }

    if (isEnterIf(method)) {
      assertTrue(desc, isGuarded(method));

      Callable<T> callable, long timeoutDuration, TimeUnit timeoutUnit, boolean amInterruptible)
      throws Exception {
    checkNotNull(callable);
    checkNotNull(timeoutUnit);
    checkPositiveTimeout(timeoutDuration);

    Future<T> future = executor.submit(callable);

    try {
      return amInterruptible
          ? future.get(timeoutDuration, timeoutUnit)

import static com.google.common.util.concurrent.Uninterruptibles.awaitTerminationUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.awaitUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.joinUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.putUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.takeUninterruptibly;

    } else {
      assertTrue(desc, isBoolean(method));
    }

    switch (method.getExceptionTypes().length) {
      case 0:
        assertFalse(desc, isInterruptible(method));
        break;
      case 1:
        assertTrue(desc, isInterruptible(method));
        break;
      default:
        fail(desc);
    }

    if (isEnterIf(method)) {
      assertTrue(desc, isGuarded(method));

import static com.google.common.util.concurrent.Uninterruptibles.awaitTerminationUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.awaitUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.joinUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.putUninterruptibly;
import static com.google.common.util.concurrent.Uninterruptibles.takeUninterruptibly;

  @Override
  public void run() {
    T result = null;
    Throwable error = null;
    if (isDone()) {
      return;
    }
    try {
      result = runInterruptibly();
    } catch (Throwable t) {
      error = t;
    }
    if (error == null) {
      // The cast is safe because of the `run` and `error` checks.
      afterRanInterruptiblySuccess(uncheckedCastNullableTToT(result));