diff options
| -rw-r--r-- | src/dotty/tools/dotc/typer/Applications.scala | 5 | ||||
| -rw-r--r-- | tests/pos/dependent-extractors.scala | 14 |
2 files changed, 16 insertions, 3 deletions
diff --git a/src/dotty/tools/dotc/typer/Applications.scala b/src/dotty/tools/dotc/typer/Applications.scala index 37a9f0ba0..d70546f9d 100644 --- a/src/dotty/tools/dotc/typer/Applications.scala +++ b/src/dotty/tools/dotc/typer/Applications.scala @@ -736,8 +736,7 @@ trait Applications extends Compatibility { self: Typer => } unapplyFn.tpe.widen match { - case mt: MethodType if mt.paramTypes.length == 1 && !mt.isDependent => - val m = mt + case mt: MethodType if mt.paramTypes.length == 1 => val unapplyArgType = mt.paramTypes.head unapp.println(i"unapp arg tpe = $unapplyArgType, pt = $selType") def wpt = widenForMatchSelector(selType) // needed? @@ -778,7 +777,7 @@ trait Applications extends Compatibility { self: Typer => tree.pos) } - val dummyArg = dummyTreeOfType(unapplyArgType) + val dummyArg = dummyTreeOfType(ownType) val unapplyApp = typedExpr(untpd.TypedSplice(Apply(unapplyFn, dummyArg :: Nil))) val unapplyImplicits = unapplyApp match { case Apply(Apply(unapply, `dummyArg` :: Nil), args2) => assert(args2.nonEmpty); args2 diff --git a/tests/pos/dependent-extractors.scala b/tests/pos/dependent-extractors.scala new file mode 100644 index 000000000..4d0830155 --- /dev/null +++ b/tests/pos/dependent-extractors.scala @@ -0,0 +1,14 @@ +object Test { + + abstract class C { type T; val x: T } + + val c = new C { type T = Int; val x = 1 } + + object X { def unapply(x: C): Some[x.T] = Some(x.x) } + + val y = c match { case X(y) => y } + val y1: Int = y + + val z = (c: Any) match { case X(y) => y } + val z1: C#T = z +} |