remove unused apply method from Castable, add codec to BaseOpaque

Author: halotukozak

core/src/main/scala/com/avsystem/commons/opaque/BaseOpaque.scala

@@ -2,12 +2,15 @@ package com.avsystem.commons
 package opaque
 
 import com.avsystem.commons.opaque.Castable.<:>
+import com.avsystem.commons.serialization.GenCodec
 
 private[opaque] trait BaseOpaque[From] extends Castable.Ops {
   trait Tag
   type Type
 
-  implicit protected final val castable: From <:> Type = new Castable[From, Type]
-
   def apply(value: From): Type
+
+
+  implicit protected final val castable: From <:> Type = new Castable[From, Type]
+  implicit final def codec(implicit fromCodec: GenCodec[From]): GenCodec[Type] = wrapF(fromCodec)
 }

core/src/main/scala/com/avsystem/commons/opaque/Castable.scala

@@ -1,9 +1,7 @@
 package com.avsystem.commons
 package opaque
 
-private[opaque] final class Castable[A, B] {
-  @inline def apply(a: A): B = a.asInstanceOf[B]
-}
+private[opaque] final class Castable[A, B]
 private[opaque] object Castable {
   type <:>[A, B] = Castable[A, B]
   def apply[A, B](implicit ev: A <:> B): Castable[A, B] = ev