scala.Specializable.scala Maven / Gradle / Ivy
/*
* Scala (https://www.scala-lang.org)
*
* Copyright EPFL and Lightbend, Inc.
*
* Licensed under Apache License 2.0
* (http://www.apache.org/licenses/LICENSE-2.0).
*
* See the NOTICE file distributed with this work for
* additional information regarding copyright ownership.
*/
package scala
/** A common supertype for companions of specializable types.
* Should not be extended in user code.
*/
trait Specializable
object Specializable {
// No type parameter in @specialized annotation.
trait SpecializedGroup { }
// Smuggle a list of types by way of a tuple upon which Group is parameterized.
class Group[T >: Null](value: T) extends SpecializedGroup { }
final val Primitives = new Group((Byte, Short, Int, Long, Char, Float, Double, Boolean, Unit))
final val Everything = new Group((Byte, Short, Int, Long, Char, Float, Double, Boolean, Unit, AnyRef))
final val Bits32AndUp = new Group((Int, Long, Float, Double))
final val Integral = new Group((Byte, Short, Int, Long, Char))
final val AllNumeric = new Group((Byte, Short, Int, Long, Char, Float, Double))
final val BestOfBreed = new Group((Int, Double, Boolean, Unit, AnyRef))
}