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Diffstat (limited to 'test/files/pos/pattern-typing.scala')
-rw-r--r-- | test/files/pos/pattern-typing.scala | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/files/pos/pattern-typing.scala b/test/files/pos/pattern-typing.scala new file mode 100644 index 0000000000..7286cc38af --- /dev/null +++ b/test/files/pos/pattern-typing.scala @@ -0,0 +1,29 @@ +import scala.language.higherKinds + +trait Bound[B] + +package p1 { + case class Sub[B <: Bound[B]](p: B) + object Test { + def g[A](x: Bound[A]) = () + def f(x: Any) = x match { case Sub(p) => g(p) } + } +} + +package p2 { + trait Traversable[+A] { def head: A = ??? } + trait Seq[+A] extends Traversable[A] { def length: Int = ??? } + + case class SubHK[B <: Bound[B], CC[X] <: Traversable[X]](xs: CC[B]) + class MyBound extends Bound[MyBound] + class MySeq extends Seq[MyBound] + + object Test { + def g[B](x: Bound[B]) = () + + def f1(x: Any) = x match { case SubHK(xs) => xs } + def f2[B <: Bound[B], CC[X] <: Traversable[X]](sub: SubHK[B, CC]): CC[B] = sub match { case SubHK(xs) => xs } + def f3 = g(f1(SubHK(new MySeq)).head) + def f4 = g(f2(SubHK(new MySeq)).head) + } +} |