import com.google.errorprone.annotations.CanIgnoreReturnValue;
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)

 * limitations under the License.
 */

package com.google.common.collect;

import java.util.Collection;
import java.util.List;
import org.jspecify.annotations.Nullable;

/**
 * GWT emulated version of {@link ImmutableList}. TODO(cpovirk): more doc
 *
 * @author Hayward Chan
 */
abstract class ForwardingImmutableList<E> extends ImmutableList<E> {

  ForwardingImmutableList() {}

import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import org.jspecify.annotations.Nullable;

/** Methods factored out so that they can be emulated differently in GWT. */
@GwtCompatible
final class Platform {
  static boolean isInstanceOfThrowableClass(
      @Nullable Throwable t, Class<? extends Throwable> expectedClass) {
    return expectedClass.isInstance(t);

   * Assigns a thread to the given {@link Future} to provide {@link ListenableFuture} functionality.
   *
   * <p><b>Warning:</b> If the input future does not already implement {@code ListenableFuture}, the
   * returned future will emulate {@link ListenableFuture#addListener} by taking a thread from an
   * internal, unbounded pool at the first call to {@code addListener} and holding it until the
   * future is {@linkplain Future#isDone() done}.
   *

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

/**
 * MapMaker emulation.
 *
 * @author Charles Fry
 */
public final class MapMaker {
  private int initialCapacity = 16;

  public MapMaker() {}

  @CanIgnoreReturnValue
  public MapMaker initialCapacity(int initialCapacity) {

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;

import java.util.Map;
import java.util.Map.Entry;

/**
 * GWT emulation of {@link ImmutableEnumMap}. The type parameter is not bounded by {@code Enum<E>}
 * to avoid code-size bloat.
 *
 * @author Hayward Chan
 */
final class ImmutableEnumMap<K, V> extends ForwardingImmutableMap<K, V> {

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.jspecify.annotations.NullMarked;

/**
 * Methods factored out so that they can be emulated differently in GWT.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@NullMarked
final class Platform {
  /** Serializes and deserializes the specified object. */
  @SuppressWarnings("unchecked")

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Collections.singletonMap;

import org.jspecify.annotations.Nullable;

/**
 * GWT emulation of {@link SingletonImmutableBiMap}.
 *
 * @author Hayward Chan
 */
final class SingletonImmutableBiMap<K, V> extends ImmutableBiMap<K, V> {
  private final K singleKey;
  private final V singleValue;

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

/** Methods factored out so that they can be emulated differently in GWT. */
@GwtCompatible
final class TestPlatform {
  static void verifyGetOnPendingFuture(Future<?> future) {
    checkNotNull(future);
    try {

import java.util.List;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.TimeUnit;

/** See newDirectExecutorService javadoc for behavioral notes. */
@J2ktIncompatible // Emulated
@GwtIncompatible
final class DirectExecutorService extends AbstractListeningExecutorService {

  /** Lock used whenever accessing the state variables (runningTasks, shutdown) of the executor */