shapeless.compat

LazyExtension

trait LazyExtension extends AnyRef

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LowPriorityExtension
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Type Members

  1. abstract type Ctx <: DerivationContext

  2. abstract type ThisState

    State of this extension, kept and provided back during Lazy / Strict implicit search.

Abstract Value Members

  1. abstract val ctx: Ctx

  2. abstract def derive(state: Ctx.State, extState: ThisState, update: (Ctx.State, ThisState) ⇒ Ctx.State)(tpe: scala.reflect.macros.Universe.Type): Option[Either[String, (Ctx.State, Ctx.Instance)]]

    Called during a Lazy or Strict implicit materialization.

    Called during a Lazy or Strict implicit materialization.

    If this extension handles @tpe, it should return either Some(Right(...)) upon success, or Some(Left(...)) upon failure. The latter will make the current implicit search fail.

    If it does not handle this type, it should return None. Materialization will then go on with other extensions, or standard implicit search.

  3. abstract def id: String

    Uniquely identifies a LazyExtension.

    Uniquely identifies a LazyExtension. Only one extension with a given id is taken into account, during a Lazy / Strict implicit search.

  4. abstract def initialState: ThisState

    Initial state of this extension, upon initialization.

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
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  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

    Attributes
    protected[java.lang]
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    @throws( ... )

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

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

    Attributes
    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )

  11. final def getClass(): Class[_]

    Definition Classes
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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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

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  15. final def notify(): Unit

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  16. final def notifyAll(): Unit

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

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  18. def toString(): String

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  19. final def wait(): Unit

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    @throws( ... )

  20. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )

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

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