fundamentals-json-circe/izumi.fundamentals.json.circe/WithCirce

WithCirce

izumi.fundamentals.json.circe.WithCirce

abstract class WithCirce[A]()(implicit derivedCodec: DerivationDerivedCodec[A])

Provides circe codecs for case classes and sealed traits

 final case class Abc(a: String, b: String, c: String)

 object Abc extends WithCirce[Abc]

To derive codecs for a sealed trait with branches inside its own companion object, use a proxy object - this works around a scala limitation: https://github.com/milessabin/shapeless/issues/837

 sealed trait Abc

 private abcCodecs extends WithCirce[Abc]

 object Abc extends WithCirce(abcCodecs) {
   final case class A()
   object A extends WithCirce[A]

   final case class B()
   object B extends WithCirce[B]
   final case class C()

   object C extends WithCirce[C]
 }

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Supertypes: class Object
trait Matchable
class Any

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