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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package collection
package immutable
/**
* This is a simple wrapper class for <a href="Map.html"
* target="contentFrame">`scala.collection.immutable.Map`</a>.
*
* It is most useful for assembling customized map abstractions
* dynamically using object composition and forwarding.
*
* @author Matthias Zenger, Martin Odersky
* @version 2.0, 31/12/2006
* @since 2.8
*/
@deprecated("Proxying is deprecated due to lack of use and compiler-level support.", "2.11.0")
trait MapProxy[A, +B] extends Map[A, B] with MapProxyLike[A, B, Map[A, B]] {
override def repr = this
private def newProxy[B1 >: B](newSelf: Map[A, B1]): MapProxy[A, B1] =
new MapProxy[A, B1] { val self = newSelf }
override def empty = newProxy(self.empty)
override def updated [B1 >: B](key: A, value: B1) = newProxy(self.updated(key, value))
override def -(key: A) = newProxy(self - key)
override def + [B1 >: B](kv: (A, B1)): Map[A, B1] = newProxy(self + kv)
override def + [B1 >: B](elem1: (A, B1), elem2: (A, B1), elems: (A, B1) *) = newProxy(self.+(elem1, elem2, elems: _*))
override def ++[B1 >: B](xs: GenTraversableOnce[(A, B1)]) = newProxy(self ++ xs.seq)
override def keySet: immutable.Set[A] = new SetProxy[A] { val self = MapProxy.this.self.keySet }
override def filterKeys(p: A => Boolean) = self.filterKeys(p)
override def mapValues[C](f: B => C) = self.mapValues(f)
}
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