Merge pull request #515 from dotty-staging/classTags

Forked ScalaRuntime and minimal classtags for arrays of value classes.

Author: DarkDimius

src/dotty/DottyPredef.scala

@@ -8,4 +8,18 @@ object DottyPredef {
   /** implicits for ClassTag and TypeTag. Should be implemented with macros */
   implicit def classTag[T]: ClassTag[T] = scala.Predef.???
   implicit def typeTag[T]: TypeTag[T] = scala.Predef.???
+
+
+  /** ClassTags for final classes */
+  implicit val IntClassTag: ClassTag[Int]         = ClassTag.Int
+  implicit val ByteClassTag: ClassTag[Byte]       = ClassTag.Byte
+  implicit val ShortClassTag: ClassTag[Short]     = ClassTag.Short
+  implicit val CharClassTag: ClassTag[Char]       = ClassTag.Char
+  implicit val LongClassTag: ClassTag[Long]       = ClassTag.Long
+  implicit val FloatClassTag: ClassTag[Float]     = ClassTag.Float
+  implicit val DoubleClassTag: ClassTag[Double]   = ClassTag.Double
+  implicit val BooleanClassTag: ClassTag[Boolean] = ClassTag.Boolean
+  implicit val UnitClassTag: ClassTag[Unit]       = ClassTag.Unit
+  implicit val NullClassTag: ClassTag[Null]       = ClassTag.Null
+  implicit val NothingClassTag: ClassTag[Nothing] = ClassTag.Nothing
 }