org.scanamo.generic.semiauto

Must be implemented by the user of Magnolia to construct a typeclass for case class T using the provided type info. E.g. if we are deriving Show[T] typeclasses, and T is a case class Foo(...), we need to constuct Show[Foo].

This method is called 'join' because typically it will join together the typeclasses for all the parameters of the case class, into a single typeclass for the case class itself. The field CaseClass.params can provide useful information for doing this.

This must be implemented by the user of Magnolia to construct a Typeclass for 'T', where 'T' is a Sealed Trait or Scala 3 Enum, using the provided type info. E.g. if we are deriving 'Show[T]' typeclasses, and T is an enum 'Suit' (eg with values Diamonds, Clubs, etc), we need to constuct 'Show[Suit]'.

This method is called 'split' because it will ''split'' the different possible types of the SealedTrait, and handle each one to finally produce a typeclass capable of handling any possible subtype of the trait.

A useful function for implementing this method is SealedTrait#choose, which can take a value instance and provide information on the specific subtype of the sealedTrait which that value is.