more existentials

1 files changed, 48 insertions, 0 deletions

diff --git a/test/files/run/existentials.scala b/test/files/run/existentials.scala
new file mode 100755
index 0000000000..3d51751996
--- /dev/null
+++ b/test/files/run/existentials.scala
@@ -0,0 +1,48 @@
+class Foo {
+  class Line {
+    case class Cell[T](var x: T)
+    def f[T](x: Any): Cell[t1] for_some { type t1 } = x match { case y: Cell[t] => y }
+
+    var x: Cell[T] for_some { type T } = new Cell(1)
+    println({ x = new Cell("abc"); x })
+  }
+}
+
+trait Counter[T] {
+   def newCounter: T
+   def get(i: T): Int
+   def inc(i: T): T
+ }
+
+ object Test extends Application {
+
+   def foo(x : Counter[T] { def name : String } for_some { type T }) = x match {
+     case ctr: Counter[t] =>
+       val c = ctr.newCounter
+       println(ctr.name+" "+ctr.get(ctr.inc(ctr.inc(c))))
+     case _ =>
+   }
+
+   var ex: Counter[T] for_some { type T } = _
+   ex = ci
+   ex = cf
+
+   val ci = new Counter[Int] {
+     def newCounter = 0
+     def get(i: Int) = i
+     def inc(i: Int) = i+1
+     def name = "Int"
+   }
+
+   val cf = new Counter[Float] {
+     def newCounter = 0
+     def get(i: Float) = i.intValue
+     def inc(i: Float) = i+1
+     def name = "Float"
+   }
+
+   foo(ci)
+   foo(cf)
+   val foo = new Foo
+   new foo.Line
+}