* writer each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned writer is closed.
   *
   * @throws IOException if an I/O error occurs while opening the writer
   */
  public abstract Writer openStream() throws IOException;

  /**
   * Opens a new buffered {@link Writer} for writing to this sink. The returned stream is not

 */
internal fun mergeAdjacentDeltaMappedRanges(ranges: MutableList<MappedRange>): MutableList<MappedRange> {
  var i = 0
  while (i < ranges.size) {
    val curr = ranges[i]
    if (curr is MappedRange.InlineDelta) {
      val j = i + 1
      mergeAdjacent@ while (j < ranges.size) {
        val next = ranges[j]
        if (next is MappedRange.InlineDelta &&
          curr.codepointDelta == next.codepointDelta

    // NPE on null listener, so we propagate that contract up into the add method as well.
    checkNotNull(runnable, "Runnable was null.");
    checkNotNull(executor, "Executor was null.");

    // Lock while we check state. We must maintain the lock while adding the new pair so that
    // another thread can't run the list out from under us. We only add to the list if we have not
    // yet started execution.
    synchronized (this) {
      if (!executed) {

 *   <li>It is easy for the user to ensure that listeners are never invoked while holding locks.
 * </ul>
 *
 * The last point is subtle. Often the observable object will be managing its own internal state
 * using a lock, however it is dangerous to dispatch listeners while holding a lock because they
 * might run on the {@code directExecutor()} or be otherwise re-entrant (call back into your

  companion object {
    fun load(source: BufferedSource): List<WebPlatformUrlTestData> {
      val list = mutableListOf<WebPlatformUrlTestData>()
      while (true) {
        val line = source.readUtf8Line() ?: break
        if (line.isEmpty() || line.startsWith("#")) continue

        var i = 0
        val parts = line.split(Regex(" ")).toTypedArray()

   * limits.
   */
  fun encode(string: String): String? {
    var pos = 0
    val limit = string.length
    val result = Buffer()

    while (pos < limit) {
      var dot = string.indexOf('.', startIndex = pos)
      if (dot == -1) dot = limit

      if (!encodeLabel(string, pos, dot, result)) {
        // If we couldn't encode the label, give up.

          intsToAdd[i][j] = randomBigInteger(Integer.SIZE - 2).intValue();
        }
      } while (!Impl.GUAVA.noAddOverflow(intsToAdd[i][0], intsToAdd[i][1]));
      do {
        for (int j = 0; j < 2; j++) {
          longsToAdd[i][j] = randomBigInteger(Long.SIZE - 2).longValue();
        }
      } while (!Impl.GUAVA.noAddOverflow(longsToAdd[i][0], longsToAdd[i][1]));
      do {
        for (int j = 0; j < 2; j++) {

        if (low < 0) {
            low = 0;
        }
        if (hi >= ctype2.length) {
            hi = ctype2.length - 1;
        }
        while (low <= hi) {
            ctype2[low++] |= CT_ALPHA;
        }
    }

    /**
     * Sets a character as a word character.
     *
     * @param ctype2
     *            The array of character types.

    // NPE on null listener, so we propagate that contract up into the add method as well.
    checkNotNull(runnable, "Runnable was null.");
    checkNotNull(executor, "Executor was null.");

    // Lock while we check state. We must maintain the lock while adding the new pair so that
    // another thread can't run the list out from under us. We only add to the list if we have not
    // yet started execution.
    synchronized (this) {
      if (!executed) {

   * independent stream each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned stream is closed.
   *
   * @throws IOException if an I/O error occurs while opening the stream
   */
  public abstract OutputStream openStream() throws IOException;

  /**
   * Opens a new buffered {@link OutputStream} for writing to this sink. The returned stream is not