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trait Parallel
trait Parallelizable[+ParRepr <: Parallel]
trait PIterableLike[+T, +Repr <: Parallel] extends Parallel with Parallelizable[PIterableLike[T, Repr]]
trait PMap[K, V] extends PIterableLike[(K, V), PMap[K, V]]
trait PSet[T] extends PIterableLike[T, PSet[T]]
trait CIterableLike[+T, +Repr]
trait CSet[T] extends CIterableLike[T, CSet[T]] with Parallelizable[PSet[T]]
trait CMap[K, V] extends CIterableLike[(K, V), CMap[K, V]] with Parallelizable[PMap[K, V]]
object Test {
var x = 0
def main() {
val map: CMap[Int, CSet[Int]] = new CMap[Int, CSet[Int]] {}
val set: CSet[Int] = new CSet[Int] {}
// should infer type argument
//map.synchronized[CIterableLike[Any, Any] with Parallelizable[PIterableLike[Any, Parallel with Parallelizable[Parallel]]]] {
// or:
//map.synchronized[CIterableLike[Any, Any] with Parallelizable[PIterableLike[Any, Parallel]]] {
// or, maybe it could also infer existential types:
//map.synchronized[CIterableLike[Any, _] with Parallelizable[PIterableLike[Any, _]]] {
map.synchronized {
if (x == 0) {
map
} else {
set
}
}
}
}
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