Packages

trait Deriver[F[_]] extends AnyRef

Deriver builds type class instances based on a Schema.

The minimum set of methods to implement are:

  • deriveRecord
  • deriveEnum
  • derivePrimitive
  • deriveOption
  • deriveSequence
  • deriveMap
  • deriveTransformedRecord (for records with more than 22 fields)

In addition to this more methods can be overridden to handle all the supported Schema types of zio-schema:

  • deriveEither (calls deriveEnum by default)
  • deriveSet (calls deriveSequence by default)
  • deriveTupleN (calls deriveRecord by default)

The cached method converts this deriver to one that uses a cache of instances shared between macro invocations.

Each derive methods get an optional summoned implicit value of the derived type class. It is the deriver's decision whether to use the available instance (as a user defined customization for a given type) or not.

If the decision is to always accept a summoned value if there is any, use the Deriver.AutoAcceptSummoned trait which implements this automatically and only calls the trait's methods in case there is no available implicit for the actual type.

Self Type
Deriver[F]
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Abstract Value Members

  1. abstract def deriveEnum[A](enum: Enum[A], cases: => Chunk[WrappedF[F, _]], summoned: => Option[F[A]]): F[A]
  2. abstract def deriveMap[K, V](map: Map[K, V], key: => F[K], value: => F[V], summoned: => Option[F[Map[K, V]]]): F[Map[K, V]]
  3. abstract def deriveOption[A](option: Optional[A], inner: => F[A], summoned: => Option[F[Option[A]]]): F[Option[A]]
  4. abstract def derivePrimitive[A](st: StandardType[A], summoned: => Option[F[A]]): F[A]
  5. abstract def deriveRecord[A](record: Record[A], fields: => Chunk[WrappedF[F, _]], summoned: => Option[F[A]]): F[A]
  6. abstract def deriveSequence[C[_], A](sequence: Sequence[C[A], A, _], inner: => F[A], summoned: => Option[F[C[A]]]): F[C[A]]
  7. abstract def deriveTransformedRecord[A, B](record: Record[A], transform: Transform[A, B, _], fields: => Chunk[WrappedF[F, _]], summoned: => Option[F[B]]): F[B]

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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    Any
  5. def autoAcceptSummoned: Deriver[F]
  6. lazy val cached: Deriver[F]
  7. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  8. def deriveEither[A, B](either: Either[A, B], left: => F[A], right: => F[B], summoned: => Option[F[Either[A, B]]]): F[Either[A, B]]
  9. def deriveSet[A](set: Set[A], inner: => F[A], summoned: => Option[F[Set[A]]]): F[Set[A]]
  10. def deriveTupleN[T](schemasAndInstances: => Chunk[(Schema[_], WrappedF[F, _])], summoned: => Option[F[T]]): F[T]
  11. final def eq(arg0: AnyRef): Boolean
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  12. def equals(arg0: AnyRef): Boolean
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  13. def finalize(): Unit
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    @throws(classOf[java.lang.Throwable])
  14. final def getClass(): Class[_ <: AnyRef]
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    @native()
  15. def hashCode(): Int
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    @native()
  16. final def isInstanceOf[T0]: Boolean
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  17. final def ne(arg0: AnyRef): Boolean
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  18. final def notify(): Unit
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    @native()
  19. final def notifyAll(): Unit
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    @native()
  20. final def synchronized[T0](arg0: => T0): T0
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  21. def toString(): String
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  22. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  23. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    @throws(classOf[java.lang.InterruptedException])
  24. final def wait(arg0: Long): Unit
    Definition Classes
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    @throws(classOf[java.lang.InterruptedException]) @native()

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