Revert "Optimize slice and take in ArrayOps, WrappedArray"

This reverts commit d540bf01fe4d9e5c56a68b0d3bada9d97af77e3f.

1 files changed, 0 insertions, 49 deletions

diff --git a/src/library/scala/collection/mutable/WrappedArray.scala b/src/library/scala/collection/mutable/WrappedArray.scala
index 81e0e64fb2..8740bda835 100644
--- a/src/library/scala/collection/mutable/WrappedArray.scala
+++ b/src/library/scala/collection/mutable/WrappedArray.scala
@@ -72,17 +72,6 @@ extends AbstractSeq[T]
     else
       super.toArray[U]
   }
-  override def slice(from: Int, until: Int): WrappedArray[T] = {
-    val start = if (from < 0) 0 else from
-    if (until <= start || start >= repr.length)
-      return emptyImpl
-    val end = if (until > length) length else until
-    sliceImpl(start, end)
-  }
-  //retain existing functionallity for existing implementations outside this file
-  protected def emptyImpl: WrappedArray[T] = newBuilder.result()
-  //retain existing functionallity for existing implementations outside this file
-  protected def sliceImpl(from: Int, until: Int): WrappedArray[T] = super.slice(from, until)
 
   override def stringPrefix = "WrappedArray"
 
@@ -99,7 +88,6 @@ extends AbstractSeq[T]
 /** A companion object used to create instances of `WrappedArray`.
  */
 object WrappedArray {
-  import java.util
   // This is reused for all calls to empty.
   private val EmptyWrappedArray  = new ofRef[AnyRef](new Array[AnyRef](0))
   def empty[T <: AnyRef]: WrappedArray[T] = EmptyWrappedArray.asInstanceOf[WrappedArray[T]]
@@ -133,23 +121,11 @@ object WrappedArray {
 
   def newBuilder[A]: Builder[A, IndexedSeq[A]] = new ArrayBuffer
 
-  private val emptyWrappedByte = new ofByte(new Array[Byte](0))
-  private val emptyWrappedShort = new ofShort(new Array[Short](0))
-  private val emptyWrappedInt = new ofInt(new Array[Int](0))
-  private val emptyWrappedLong = new ofLong(new Array[Long](0))
-  private val emptyWrappedFloat = new ofFloat(new Array[Float](0))
-  private val emptyWrappedDouble = new ofDouble(new Array[Double](0))
-  private val emptyWrappedUnit = new ofUnit(new Array[Unit](0))
-  private val emptyWrappedChar = new ofChar(new Array[Char](0))
-  private val emptyWrappedBoolean = new ofBoolean(new Array[Boolean](0))
-
   final class ofRef[T <: AnyRef](val array: Array[T]) extends WrappedArray[T] with Serializable {
     lazy val elemTag = ClassTag[T](arrayElementClass(array.getClass))
     def length: Int = array.length
     def apply(index: Int): T = array(index).asInstanceOf[T]
     def update(index: Int, elem: T) { array(index) = elem }
-    protected override def emptyImpl = new ofRef(util.Arrays.copyOf[T](array,0))
-    protected override def sliceImpl(from: Int, until: Int) = new ofRef[T](util.Arrays.copyOfRange[T](array, from, until))
   }
 
   final class ofByte(val array: Array[Byte]) extends WrappedArray[Byte] with Serializable {
@@ -157,8 +133,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Byte = array(index)
     def update(index: Int, elem: Byte) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedByte
-    protected override def sliceImpl(from: Int, until: Int) = new ofByte(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofShort(val array: Array[Short]) extends WrappedArray[Short] with Serializable {
@@ -166,8 +140,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Short = array(index)
     def update(index: Int, elem: Short) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedShort
-    protected override def sliceImpl(from: Int, until: Int) = new ofShort(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofChar(val array: Array[Char]) extends WrappedArray[Char] with Serializable {
@@ -175,8 +147,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Char = array(index)
     def update(index: Int, elem: Char) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedChar
-    protected override def sliceImpl(from: Int, until: Int) = new ofChar(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofInt(val array: Array[Int]) extends WrappedArray[Int] with Serializable {
@@ -184,8 +154,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Int = array(index)
     def update(index: Int, elem: Int) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedInt
-    protected override def sliceImpl(from: Int, until: Int) = new ofInt(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofLong(val array: Array[Long]) extends WrappedArray[Long] with Serializable {
@@ -193,8 +161,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Long = array(index)
     def update(index: Int, elem: Long) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedLong
-    protected override def sliceImpl(from: Int, until: Int) = new ofLong(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofFloat(val array: Array[Float]) extends WrappedArray[Float] with Serializable {
@@ -202,8 +168,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Float = array(index)
     def update(index: Int, elem: Float) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedFloat
-    protected override def sliceImpl(from: Int, until: Int) = new ofFloat(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofDouble(val array: Array[Double]) extends WrappedArray[Double] with Serializable {
@@ -211,8 +175,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Double = array(index)
     def update(index: Int, elem: Double) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedDouble
-    protected override def sliceImpl(from: Int, until: Int) = new ofDouble(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofBoolean(val array: Array[Boolean]) extends WrappedArray[Boolean] with Serializable {
@@ -220,8 +182,6 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Boolean = array(index)
     def update(index: Int, elem: Boolean) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedBoolean
-    protected override def sliceImpl(from: Int, until: Int) = new ofBoolean(util.Arrays.copyOfRange(array, from, until))
   }
 
   final class ofUnit(val array: Array[Unit]) extends WrappedArray[Unit] with Serializable {
@@ -229,14 +189,5 @@ object WrappedArray {
     def length: Int = array.length
     def apply(index: Int): Unit = array(index)
     def update(index: Int, elem: Unit) { array(index) = elem }
-    protected override def emptyImpl = emptyWrappedUnit
-    protected override def sliceImpl(from: Int, until: Int) = {
-      // cant use
-      // new ofUnit(util.Arrays.copyOfRange[Unit](array, from, until)) - Unit is special and doesnt compile
-      // cant use util.Arrays.copyOfRange[Unit](repr, from, until) - Unit is special and doesnt compile
-      val res = new Array[Unit](until-from)
-      System.arraycopy(repr, from, res, 0, until-from)
-      new ofUnit(res)
-    }
   }
 }