Method peek

java/src/org/openqa/selenium/json/JsonInput.java:124–171

Peek at the next input string character to determine the pending JSON element type. @return JsonType indicating the pending JSON element type @throws JsonException if unable to determine the type of the pending element @throws UncheckedIOException if an I/O exception is encountered

()

   * @throws UncheckedIOException if an I/O exception is encountered
   */
  public JsonType peek() {
    skipWhitespace(input);

    switch (input.peek()) {
      case 'f':
      case 't':
        return JsonType.BOOLEAN;

      case 'n':
        return JsonType.NULL;

      case '-':
      case '+':
      case '0':
      case '1':
      case '2':
      case '3':
      case '4':
      case '5':
      case '6':
      case '7':
      case '8':
      case '9':
        return JsonType.NUMBER;

      case '"':
        return isReadingName() ? JsonType.NAME : JsonType.STRING;

      case '{':
        return JsonType.START_MAP;

      case '}':
        return JsonType.END_MAP;

      case '[':
        return JsonType.START_COLLECTION;

      case ']':
        return JsonType.END_COLLECTION;

      case Input.EOF:
        return JsonType.END;

      default:
        char c = input.read();
        throw new JsonException("Unable to determine type from: " + c + ". " + input);
    }
  }

  /**
   * Read the next element of the JSON input stream as a boolean value.