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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2010-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package generic
import scala.collection.parallel.Combiner
import scala.collection.parallel.ParIterable
import scala.collection.parallel.ParMap
import scala.annotation.unchecked.uncheckedVariance
import scala.language.higherKinds
/** A template trait for collections having a companion.
*
* @tparam A the element type of the collection
* @tparam CC the type constructor representing the collection class
* @author Aleksandar Prokopec
* @since 2.8
*/
trait GenericParTemplate[+A, +CC[X] <: ParIterable[X]]
extends GenericTraversableTemplate[A, CC]
with HasNewCombiner[A, CC[A] @uncheckedVariance]
{
def companion: GenericCompanion[CC] with GenericParCompanion[CC]
protected[this] override def newBuilder: scala.collection.mutable.Builder[A, CC[A]] = newCombiner
protected[this] override def newCombiner: Combiner[A, CC[A]] = {
val cb = companion.newCombiner[A]
cb
}
override def genericBuilder[B]: Combiner[B, CC[B]] = genericCombiner[B]
def genericCombiner[B]: Combiner[B, CC[B]] = {
val cb = companion.newCombiner[B]
cb
}
}
trait GenericParMapTemplate[K, +V, +CC[X, Y] <: ParMap[X, Y]] extends GenericParTemplate[(K, V), ParIterable]
{
protected[this] override def newCombiner: Combiner[(K, V), CC[K, V]] = {
val cb = mapCompanion.newCombiner[K, V]
cb
}
def mapCompanion: GenericParMapCompanion[CC]
def genericMapCombiner[P, Q]: Combiner[(P, Q), CC[P, Q]] = {
val cb = mapCompanion.newCombiner[P, Q]
cb
}
}
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