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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package mutable
/** This class can be used as an adaptor to create mutable sets from
* immutable set implementations. Only method `empty` has
* to be redefined if the immutable set on which this mutable set is
* originally based is not empty. `empty` is supposed to
* return the representation of an empty set.
*
* @author Matthias Zenger
* @version 1.0, 21/07/2003
* @since 1
*/
@deprecated("Adaptors are inherently unreliable and prone to performance problems.", "2.11.0")
class ImmutableSetAdaptor[A](protected var set: immutable.Set[A])
extends AbstractSet[A]
with Set[A]
with Serializable {
override def size: Int = set.size
override def isEmpty: Boolean = set.isEmpty
def contains(elem: A): Boolean = set.contains(elem)
override def foreach[U](f: A => U): Unit = set.foreach(f)
override def exists(p: A => Boolean): Boolean = set.exists(p)
override def toList: List[A] = set.toList
override def toString = set.toString
def iterator: Iterator[A] = set.iterator
def +=(elem: A): this.type = { set = set + elem; this }
def -=(elem: A): this.type = { set = set - elem; this }
override def clear(): Unit = { set = set.empty }
}
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