}

  /**
   * Returns an {@code InputStream} that decodes base-encoded input from the specified {@code
   * Reader}. The returned stream throws a {@link DecodingException} upon decoding-specific errors.
   */
  @J2ktIncompatible
  @GwtIncompatible // Reader,InputStream
  public abstract InputStream decodingStream(Reader reader);

  /**
   * Returns a {@code ByteSource} that reads base-encoded bytes from the specified {@code

   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this class leaves the specific choice of
   * hash code unspecified, unlike the Java 8+ equivalent.
   */
  @Override
  public abstract int hashCode();

  /**
   * Returns a string representation for this instance.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this class leaves the specific string

   * <p>The default implementation of this method in {@code AbstractFuture} does nothing. This is
   * intended for very lightweight cleanup work, for example, timing statistics or clearing fields.
   * If your task does anything heavier consider, just using a listener with an executor.
   *
   * @since 20.0
   */
  @ForOverride
  protected void afterDone() {}

       * one-sixth of them need cloning when a table doubles. The nodes they replace will be garbage
       * collectable as soon as they are no longer referenced by any reader thread that may be in
       * the midst of traversing table right now.
       */

      int newCount = count;
      AtomicReferenceArray<ReferenceEntry<K, V>> newTable = newEntryArray(oldCapacity << 1);

   * 4380</a>.
   *
   * @since 5.0
   */
  public static final class TeredoInfo {
    private final Inet4Address server;
    private final Inet4Address client;
    private final int port;
    private final int flags;

    /**
     * Constructs a TeredoInfo instance.
     *
     * <p>Both server and client can be {@code null}, in which case the value {@code "0.0.0.0"} will
     * be assumed.
     *

    BufferedReader reader = source.openBufferedStream();
    assertTrue(source.wasStreamOpened());
    assertFalse(source.wasStreamClosed());

    StringWriter writer = new StringWriter();
    char[] buf = new char[64];
    int read;
    while ((read = reader.read(buf)) != -1) {
      writer.write(buf, 0, read);
    }
    reader.close();
    writer.close();

    state = State.CANCELLED;
    notifyAndClearListeners();

    if (delegate != null) {
      // TODO(lukes): consider adding the StackOverflowError protection from the server version
      delegate.cancel(mayInterruptIfRunning);
    }

    return true;
  }

  protected void interruptTask() {}

  @Override
  public boolean isCancelled() {

    assertTrue(InetAddresses.isTeredoAddress((Inet6Address) ip));
    InetAddresses.TeredoInfo teredo = InetAddresses.getTeredoInfo((Inet6Address) ip);

    InetAddress server = InetAddresses.forString(serverStr);
    assertEquals(server, teredo.getServer());

    InetAddress client = InetAddresses.forString(clientStr);
    assertEquals(client, teredo.getClient());

    assertEquals(port, teredo.getPort());

import com.google.common.reflect.Reflection;
import com.google.common.reflect.TypeToken;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

       * fastest (more than twice as fast as the Java implementation, vs ~1.5x with non-final static
       * fields, on x86_32) under the Hotspot server compiler. The reason is obviously that the
       * non-final fields need to be reloaded inside the loop.
       *
       * And, no, defining (final or not) local variables out of the loop still isn't as good