def isLineMagic()

in kernel-api/src/main/scala/org/apache/toree/magic/MagicManager.scala [36:75]

• 22 lines of code
• 5 McCabe index (conditional complexity)

  def isLineMagic(magic: Magic): Boolean =
    magic.getClass.getInterfaces.contains(classOf[LineMagic])

  /**
   * Checks if the provided magic is a cell magic.
   *
   * @param magic The magic instance
   * @return True if the magic is an instance of a cell magic
   */
  def isCellMagic(magic: Magic): Boolean =
    magic.getClass.getInterfaces.contains(classOf[CellMagic])

  /**
   * Finds a magic whose class name ends with a case insensitive name.
   *
   * @param name The name to search for
   * @return The magic
   * @throws MagicNotFoundException when no magics match name
   */
  @throws[MagicNotFoundException]
  def findMagic(name: String): Magic = {
    @tailrec def inheritsMagic(klass: Class[_]): Boolean = {
      if (klass == null) false
      else if (klass.getInterfaces.exists(classOf[Magic].isAssignableFrom)) true
      else inheritsMagic(klass.getSuperclass)
    }

    val magics = pluginManager.plugins
      .filter(p => inheritsMagic(p.getClass))
      .filter(_.simpleName.split("\\.").last.toLowerCase == name.toLowerCase)

    if (magics.size <= 0){
      logger.error(s"No magic found for $name!")
      throw new MagicNotFoundException(name)
    } else if (magics.size > 1) {
      logger.warn(s"More than one magic found for $name!")
    }

    magics.head.asInstanceOf[Magic]
  }