@ElementTypesAreNonnullByDefault
public final class HostSpecifier {

  private final String canonicalForm;

  private HostSpecifier(String canonicalForm) {
    this.canonicalForm = canonicalForm;
  }


            

Reported by PMD.

                  // Verify that no port was specified, and strip optional brackets from
    // IPv6 literals.
    final HostAndPort parsedHost = HostAndPort.fromString(specifier);
    Preconditions.checkArgument(!parsedHost.hasPort());
    final String host = parsedHost.getHost();

    // Try to interpret the specifier as an IP address. Note we build
    // the address rather than using the .is* methods because we want to
    // use InetAddresses.toUriString to convert the result to a string in

            

Reported by PMD.

                  // IPv6 literals.
    final HostAndPort parsedHost = HostAndPort.fromString(specifier);
    Preconditions.checkArgument(!parsedHost.hasPort());
    final String host = parsedHost.getHost();

    // Try to interpret the specifier as an IP address. Note we build
    // the address rather than using the .is* methods because we want to
    // use InetAddresses.toUriString to convert the result to a string in
    // canonical form.

            

Reported by PMD.

                  InetAddress addr = null;
    try {
      addr = InetAddresses.forString(host);
    } catch (IllegalArgumentException e) {
      // It is not an IPv4 or IPv6 literal
    }

    if (addr != null) {
      return new HostSpecifier(InetAddresses.toUriString(addr));

            

Reported by PMD.

                  // TODO(user): different versions of this for different factories?
    final InternetDomainName domain = InternetDomainName.from(host);

    if (domain.hasPublicSuffix()) {
      return new HostSpecifier(domain.toString());
    }

    throw new IllegalArgumentException(
        "Domain name does not have a recognized public suffix: " + host);

            

Reported by PMD.

                  // the address rather than using the .is* methods because we want to
    // use InetAddresses.toUriString to convert the result to a string in
    // canonical form.
    InetAddress addr = null;
    try {
      addr = InetAddresses.forString(host);
    } catch (IllegalArgumentException e) {
      // It is not an IPv4 or IPv6 literal
    }

            

Reported by PMD.

                        ToOptionalState::combine,
          state -> {
            Object result = state.getElement();
            return (result == NULL_PLACEHOLDER) ? null : result;
          },
          Collector.Characteristics.UNORDERED);

  /**
   * A collector that takes a stream containing exactly one element and returns that element. The

            

Reported by PMD.

                private static final class ToOptionalState {
    static final int MAX_EXTRAS = 4;

    @Nullable Object element;
    List<Object> extras;

    ToOptionalState() {
      element = null;
      extras = emptyList();

            

Reported by PMD.

                  static final int MAX_EXTRAS = 4;

    @Nullable Object element;
    List<Object> extras;

    ToOptionalState() {
      element = null;
      extras = emptyList();
    }

            

Reported by PMD.

                  List<Object> extras;

    ToOptionalState() {
      element = null;
      extras = emptyList();
    }

    IllegalArgumentException multiples(boolean overflow) {
      StringBuilder sb =

            

Reported by PMD.

                      extras.add(other.element);
        extras.addAll(other.extras);
        if (extras.size() > MAX_EXTRAS) {
          extras.subList(MAX_EXTRAS, extras.size()).clear();
          throw multiples(true);
        }
        return this;
      }
    }

            

Reported by PMD.

              @ElementTypesAreNonnullByDefault
abstract class LineBuffer {
  /** Holds partial line contents. */
  private StringBuilder line = new StringBuilder();
  /** Whether a line ending with a CR is pending processing. */
  private boolean sawReturn;

  /**
   * Process additional characters from the stream. When a line separator is found the contents of

            

Reported by PMD.

              @ElementTypesAreNonnullByDefault
abstract class LineBuffer {
  /** Holds partial line contents. */
  private StringBuilder line = new StringBuilder();
  /** Whether a line ending with a CR is pending processing. */
  private boolean sawReturn;

  /**
   * Process additional characters from the stream. When a line separator is found the contents of

            

Reported by PMD.

                /** Holds partial line contents. */
  private StringBuilder line = new StringBuilder();
  /** Whether a line ending with a CR is pending processing. */
  private boolean sawReturn;

  /**
   * Process additional characters from the stream. When a line separator is found the contents of
   * the line and the line separator itself are passed to the abstract {@link #handleLine} method.
   *

            

Reported by PMD.

                  int pos = off;
    if (sawReturn && len > 0) {
      // Last call to add ended with a CR; we can handle the line now.
      if (finishLine(cbuf[pos] == '\n')) {
        pos++;
      }
    }

    int start = pos;

            

Reported by PMD.

                        line.append(cbuf, start, pos - start);
          sawReturn = true;
          if (pos + 1 < end) {
            if (finishLine(cbuf[pos + 1] == '\n')) {
              pos++;
            }
          }
          start = pos + 1;
          break;

            

Reported by PMD.

                }

  private static final class ImmutableTableCollectorState<R, C, V> {
    final List<MutableCell<R, C, V>> insertionOrder = new ArrayList<>();
    final Table<R, C, MutableCell<R, C, V>> table = HashBasedTable.create();

    void put(R row, C column, V value, BinaryOperator<V> merger) {
      MutableCell<R, C, V> oldCell = table.get(row, column);
      if (oldCell == null) {

            

Reported by PMD.

              
  private static final class ImmutableTableCollectorState<R, C, V> {
    final List<MutableCell<R, C, V>> insertionOrder = new ArrayList<>();
    final Table<R, C, MutableCell<R, C, V>> table = HashBasedTable.create();

    void put(R row, C column, V value, BinaryOperator<V> merger) {
      MutableCell<R, C, V> oldCell = table.get(row, column);
      if (oldCell == null) {
        MutableCell<R, C, V> cell = new MutableCell<>(row, column, value);

            

Reported by PMD.

                }

  private static final class MutableCell<R, C, V> extends AbstractCell<R, C, V> {
    private final R row;
    private final C column;
    private V value;

    MutableCell(R row, C column, V value) {
      this.row = checkNotNull(row, "row");

            

Reported by PMD.

              
  private static final class MutableCell<R, C, V> extends AbstractCell<R, C, V> {
    private final R row;
    private final C column;
    private V value;

    MutableCell(R row, C column, V value) {
      this.row = checkNotNull(row, "row");
      this.column = checkNotNull(column, "column");

            

Reported by PMD.

                private static final class MutableCell<R, C, V> extends AbstractCell<R, C, V> {
    private final R row;
    private final C column;
    private V value;

    MutableCell(R row, C column, V value) {
      this.row = checkNotNull(row, "row");
      this.column = checkNotNull(column, "column");
      this.value = checkNotNull(value, "value");

            

Reported by PMD.

              @ElementTypesAreNonnullByDefault
final class MultiInputStream extends InputStream {

  private Iterator<? extends ByteSource> it;
  @CheckForNull private InputStream in;

  /**
   * Creates a new instance.
   *

            

Reported by PMD.

              @ElementTypesAreNonnullByDefault
final class MultiInputStream extends InputStream {

  private Iterator<? extends ByteSource> it;
  @CheckForNull private InputStream in;

  /**
   * Creates a new instance.
   *

            

Reported by PMD.

              final class MultiInputStream extends InputStream {

  private Iterator<? extends ByteSource> it;
  @CheckForNull private InputStream in;

  /**
   * Creates a new instance.
   *
   * @param it an iterator of I/O suppliers that will provide each substream

            

Reported by PMD.

                    try {
        in.close();
      } finally {
        in = null;
      }
    }
  }

  /** Closes the current input stream and opens the next one, if any. */

            

Reported by PMD.

                private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      in = it.next().openStream();
    }
  }

  @Override
  public int available() throws IOException {

            

Reported by PMD.

               * @param <V> Value parameter type
 */
@ElementTypesAreNonnullByDefault
final class UndirectedGraphConnections<N, V> implements GraphConnections<N, V> {
  private final Map<N, V> adjacentNodeValues;

  private UndirectedGraphConnections(Map<N, V> adjacentNodeValues) {
    this.adjacentNodeValues = checkNotNull(adjacentNodeValues);
  }

            

Reported by PMD.

               */
@ElementTypesAreNonnullByDefault
final class UndirectedGraphConnections<N, V> implements GraphConnections<N, V> {
  private final Map<N, V> adjacentNodeValues;

  private UndirectedGraphConnections(Map<N, V> adjacentNodeValues) {
    this.adjacentNodeValues = checkNotNull(adjacentNodeValues);
  }


            

Reported by PMD.

                @Override
  public Iterator<EndpointPair<N>> incidentEdgeIterator(final N thisNode) {
    return Iterators.transform(
        adjacentNodeValues.keySet().iterator(),
        new Function<N, EndpointPair<N>>() {
          @Override
          public EndpointPair<N> apply(N incidentNode) {
            return EndpointPair.unordered(thisNode, incidentNode);
          }

            

Reported by PMD.

                @Override
  public void removePredecessor(N node) {
    @SuppressWarnings("unused")
    V unused = removeSuccessor(node);
  }

  @Override
  @CheckForNull
  public V removeSuccessor(N node) {

            

Reported by PMD.

                @Override
  public void addPredecessor(N node, V value) {
    @SuppressWarnings("unused")
    V unused = addSuccessor(node, value);
  }

  @Override
  @CheckForNull
  public V addSuccessor(N node, V value) {

            

Reported by PMD.

               * @since 13.0
 */
@Beta
public final class ImmutableTypeToInstanceMap<B> extends ForwardingMap<TypeToken<? extends B>, B>
    implements TypeToInstanceMap<B> {

  /** Returns an empty type to instance map. */
  public static <B> ImmutableTypeToInstanceMap<B> of() {
    return new ImmutableTypeToInstanceMap<B>(ImmutableMap.<TypeToken<? extends B>, B>of());

            

Reported by PMD.

                 */
  @Beta
  public static final class Builder<B> {
    private final ImmutableMap.Builder<TypeToken<? extends B>, B> mapBuilder =
        ImmutableMap.builder();

    private Builder() {}

    /**

            

Reported by PMD.

                  }
  }

  private final ImmutableMap<TypeToken<? extends B>, B> delegate;

  private ImmutableTypeToInstanceMap(ImmutableMap<TypeToken<? extends B>, B> delegate) {
    this.delegate = delegate;
  }


            

Reported by PMD.

                  }
  }

  private final ImmutableMap<TypeToken<? extends B>, B> delegate;

  private ImmutableTypeToInstanceMap(ImmutableMap<TypeToken<? extends B>, B> delegate) {
    this.delegate = delegate;
  }


            

Reported by PMD.

                @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public <T extends B> T putInstance(TypeToken<T> type, T value) {
    throw new UnsupportedOperationException();
  }

  /**

            

Reported by PMD.

               */
@GwtIncompatible // not worth using in GWT for now
@ElementTypesAreNonnullByDefault
class CompactLinkedHashSet<E extends @Nullable Object> extends CompactHashSet<E> {

  /** Creates an empty {@code CompactLinkedHashSet} instance. */
  public static <E extends @Nullable Object> CompactLinkedHashSet<E> create() {
    return new CompactLinkedHashSet<>();
  }

            

Reported by PMD.

               */
@GwtIncompatible // not worth using in GWT for now
@ElementTypesAreNonnullByDefault
class CompactLinkedHashSet<E extends @Nullable Object> extends CompactHashSet<E> {

  /** Creates an empty {@code CompactLinkedHashSet} instance. */
  public static <E extends @Nullable Object> CompactLinkedHashSet<E> create() {
    return new CompactLinkedHashSet<>();
  }

            

Reported by PMD.

                public static <E extends @Nullable Object> CompactLinkedHashSet<E> create(
      Collection<? extends E> collection) {
    CompactLinkedHashSet<E> set = createWithExpectedSize(collection.size());
    set.addAll(collection);
    return set;
  }

  /**
   * Creates a {@code CompactLinkedHashSet} instance containing the given elements in unspecified

            

Reported by PMD.

                @CanIgnoreReturnValue
  Set<E> convertToHashFloodingResistantImplementation() {
    Set<E> result = super.convertToHashFloodingResistantImplementation();
    this.predecessor = null;
    this.successor = null;
    return result;
  }

  /*

            

Reported by PMD.

                Set<E> convertToHashFloodingResistantImplementation() {
    Set<E> result = super.convertToHashFloodingResistantImplementation();
    this.predecessor = null;
    this.successor = null;
    return result;
  }

  /*
   * For discussion of the safety of the following methods for operating on predecessors and

            

Reported by PMD.

                            "https://stackoverflow.com/q/5189914/28465",
              "https://groups.google.com/d/msg/guava-announce/zHZTFg7YF3o/rQNnwdHeEwAJ"));
    }
    logger.log(
        java.util.logging.Level.WARNING,
        "Later in 2020, we will remove GWT-RPC support for Guava types. You are seeing this"
            + " warning because you are sending a Guava type over GWT-RPC, which will break. You"
            + " can identify which type by looking at the class name in the attached stack trace.",
        new Throwable());

            

Reported by PMD.

               */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
final class Platform {
  private static final java.util.logging.Logger logger =
      java.util.logging.Logger.getLogger(Platform.class.getName());

  /** Returns the platform preferred implementation of a map based on a hash table. */
  static <K extends @Nullable Object, V extends @Nullable Object>

            

Reported by PMD.

                 * ObjectArrays, which is the main caller of this method.)
   */
  static <T extends @Nullable Object> T[] newArray(T[] reference, int length) {
    Class<?> type = reference.getClass().getComponentType();

    // the cast is safe because
    // result.getClass() == reference.getClass().getComponentType()
    @SuppressWarnings("unchecked")
    T[] result = (T[]) Array.newInstance(type, length);

            

Reported by PMD.

              
    if (!Boolean.parseBoolean(System.getProperty(propertyName, "false"))) {
      throw new UnsupportedOperationException(
          com.google.common.base.Strings.lenientFormat(
              "We are removing GWT-RPC support for Guava types. You can temporarily reenable"
                  + " support by setting the system property %s to true. For more about system"
                  + " properties, see %s. For more about Guava's GWT-RPC support, see %s.",
              propertyName,
              "https://stackoverflow.com/q/5189914/28465",

            

Reported by PMD.

                 * - https://github.com/jspecify/jdk/commit/71d826792b8c7ef95d492c50a274deab938f2552
   */
  @SuppressWarnings("nullness")
  static <T extends @Nullable Object> T[] copy(Object[] source, int from, int to, T[] arrayOfType) {
    return Arrays.copyOfRange(source, from, to, (Class<? extends T[]>) arrayOfType.getClass());
  }

  /**
   * Configures the given map maker to use weak keys, if possible; does nothing otherwise (i.e., in

            

Reported by PMD.

              
  MultiReader(Iterator<? extends CharSource> readers) throws IOException {
    this.it = readers;
    advance();
  }

  /** Closes the current reader and opens the next one, if any. */
  private void advance() throws IOException {
    close();

            

Reported by PMD.

              @GwtIncompatible
@ElementTypesAreNonnullByDefault
class MultiReader extends Reader {
  private final Iterator<? extends CharSource> it;
  @CheckForNull private Reader current;

  MultiReader(Iterator<? extends CharSource> readers) throws IOException {
    this.it = readers;
    advance();

            

Reported by PMD.

              @ElementTypesAreNonnullByDefault
class MultiReader extends Reader {
  private final Iterator<? extends CharSource> it;
  @CheckForNull private Reader current;

  MultiReader(Iterator<? extends CharSource> readers) throws IOException {
    this.it = readers;
    advance();
  }

            

Reported by PMD.

                private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      current = it.next().openStream();
    }
  }

  @Override
  public int read(char[] cbuf, int off, int len) throws IOException {

            

Reported by PMD.

                    try {
        current.close();
      } finally {
        current = null;
      }
    }
  }
}

            

Reported by PMD.