Object/Class

julienrf.enum

Values

Related Docs: class Values | package enum

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object Values

The companion object contains the machinery to automatically derive the values of a sealed trait extended by case objects only.

Basically, the derivation process is the following:

The first step is the hard part of this process and is actually achieved by shapeless (using macros).

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Type Members

  1. case class ValuesAux[A, Repr](values: List[A]) extends Product with Serializable

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    An intermediate data structure that carries both the type A and its representation Repr.

    An intermediate data structure that carries both the type A and its representation Repr.

    Repr

    Phantom type describing the structure of A

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. object ValuesAux extends Serializable

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    To sum up: we are given the types of the possible A values in a Coproduct structure and we want to define how to traverse this structure to accumulate all the values in a List.

  5. def apply[A](implicit values: Values[A]): Values[A]

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    sealed trait Foo
    object Foo {
      case object Bar extends Foo
      case object Baz extends Foo
      val values = Values[Foo]
    }
    returns

    All the possible values of A

    Annotations
    @inline()
  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )
  8. implicit def derived[A, Repr <: Coproduct](implicit gen: Aux[A, Repr], v: ValuesAux[A, Repr]): Values[A]

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    Derives a Values[A] instance given a representation Repr of type A in terms of Coproduct, and a given a ValuesAux[A, Repr] instance.

    Derives a Values[A] instance given a representation Repr of type A in terms of Coproduct, and a given a ValuesAux[A, Repr] instance.

    Repr

    Type of the representation of A as a Coproduct. A Coproduct is recursively defined as either CNil or H :+: T, where T is a subtype of Coproduct. For instance, a sealed trait that is extended by only one case object Foo can have the following representation: Foo.type :+: CNil.

    gen

    Isomorphism between A and Repr. Shapeless is able to provide such an implicit value for any sealed type

  9. final def eq(arg0: AnyRef): Boolean

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  10. def equals(arg0: Any): Boolean

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  11. def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]

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  13. def hashCode(): Int

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  14. final def isInstanceOf[T0]: Boolean

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  15. final def ne(arg0: AnyRef): Boolean

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  16. final def notify(): Unit

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  17. final def notifyAll(): Unit

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  18. final def synchronized[T0](arg0: ⇒ T0): T0

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  19. def toString(): String

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  20. final def wait(): Unit

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    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit

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  22. final def wait(arg0: Long): Unit

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