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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package generic
import mutable.{Builder, MapBuilder}
import scala.language.higherKinds
/** A template for companion objects of mutable.Map and subclasses thereof.
*
* @since 2.8
*/
abstract class SortedMapFactory[CC[A, B] <: SortedMap[A, B] with SortedMapLike[A, B, CC[A, B]]] {
type Coll = CC[_, _]
def empty[A, B](implicit ord: Ordering[A]): CC[A, B]
def apply[A, B](elems: (A, B)*)(implicit ord: Ordering[A]): CC[A, B] = (newBuilder[A, B](ord) ++= elems).result()
def newBuilder[A, B](implicit ord: Ordering[A]): Builder[(A, B), CC[A, B]] =
new MapBuilder[A, B, CC[A, B]](empty(ord))
class SortedMapCanBuildFrom[A, B](implicit ord: Ordering[A]) extends CanBuildFrom[Coll, (A, B), CC[A, B]] {
def apply(from: Coll) = newBuilder[A, B](ord)
def apply() = newBuilder[A, B]
}
}
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