Method expect

java/src/org/openqa/selenium/json/JsonInput.java:571–604

Verify that the type of the pending JSON element matches the specified type. @param type expected JSON element type @throws JsonException if the pending element is not of the expected type @throws UncheckedIOException if an I/O exception is encountered

(JsonType type)

   * @throws UncheckedIOException if an I/O exception is encountered
   */
  private void expect(JsonType type) {
    if (peek() != type) {
      throw new JsonException(
          "Expected to read a " + type + " but instead have: " + peek() + ". " + input);
    }

    // Special map handling. Woo!
    Container top = stack.peekFirst();

    if (type == JsonType.NAME) {
      if (top == Container.MAP_NAME) {
        stack.removeFirst();
        stack.addFirst(Container.MAP_VALUE);
        return;
      } else if (top != null) {
        throw new JsonException("Unexpected attempt to read name. " + input);
      }

      return; // End of Name handling
    }

    // Handle the case where we're reading a value.
    if (type == JsonType.END_COLLECTION || type == JsonType.END_MAP) {
      // Closing the container - don't treat as a new element in it.
      return;
    }
    if (top == Container.MAP_VALUE) {
      stack.removeFirst();
      stack.addFirst(Container.MAP_NAME);
      markElementRead();
    } else if (top == Container.COLLECTION) {
      markElementRead();
    }
  }

  private void markElementRead() {
    if (!containerHasElement.isEmpty()) {