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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package immutable
import generic._
/** A subtrait of `collection.SortedSet` which represents sorted sets
* which cannot be mutated.
*
* @author Sean McDirmid
* @author Martin Odersky
* @version 2.8
* @since 2.4
* @define Coll `immutable.SortedSet`
* @define coll immutable sorted set
*/
trait SortedSet[A] extends Set[A] with scala.collection.SortedSet[A] with SortedSetLike[A, SortedSet[A]] {
/** Needs to be overridden in subclasses. */
override def empty: SortedSet[A] = SortedSet.empty[A]
}
/** $factoryInfo
* @define Coll `immutable.SortedSet`
* @define coll immutable sorted set
*/
object SortedSet extends ImmutableSortedSetFactory[SortedSet] {
/** $sortedSetCanBuildFromInfo */
def canBuildFrom[A](implicit ord: Ordering[A]): CanBuildFrom[Coll, A, SortedSet[A]] = newCanBuildFrom[A]
def empty[A](implicit ord: Ordering[A]): SortedSet[A] = TreeSet.empty[A]
// Force a declaration here so that BitSet (which does not inherit from SortedSetFactory) can be more specific
override implicit def newCanBuildFrom[A](implicit ord : Ordering[A]) : CanBuildFrom[Coll, A, SortedSet[A]] = super.newCanBuildFrom
}
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