diff options
| -rw-r--r-- | src/dotty/tools/dotc/core/Types.scala | 8 | ||||
| -rw-r--r-- | src/dotty/tools/dotc/typer/TypeAssigner.scala | 4 | ||||
| -rw-r--r-- | src/dotty/tools/dotc/typer/Typer.scala | 2 |
3 files changed, 10 insertions, 4 deletions
diff --git a/src/dotty/tools/dotc/core/Types.scala b/src/dotty/tools/dotc/core/Types.scala index 529452c73..6145bdffb 100644 --- a/src/dotty/tools/dotc/core/Types.scala +++ b/src/dotty/tools/dotc/core/Types.scala @@ -906,10 +906,14 @@ object Types { /** Turn type into a function type. * @pre this is a non-dependent method type. + * @param drop The number of trailing parameters that should be dropped + * when forming the function type. */ - def toFunctionType(implicit ctx: Context): Type = this match { + def toFunctionType(dropLast: Int = 0)(implicit ctx: Context): Type = this match { case mt @ MethodType(_, formals) if !mt.isDependent => - defn.FunctionType(formals mapConserve (_.underlyingIfRepeated(mt.isJava)), mt.resultType) + val formals1 = if (dropLast == 0) formals else formals dropRight dropLast + defn.FunctionType( + formals1 mapConserve (_.underlyingIfRepeated(mt.isJava)), mt.resultType) } /** The signature of this type. This is by default NotAMethod, diff --git a/src/dotty/tools/dotc/typer/TypeAssigner.scala b/src/dotty/tools/dotc/typer/TypeAssigner.scala index e35dd6c92..5604a607c 100644 --- a/src/dotty/tools/dotc/typer/TypeAssigner.scala +++ b/src/dotty/tools/dotc/typer/TypeAssigner.scala @@ -285,7 +285,9 @@ trait TypeAssigner { tree.withType(thenp.tpe | elsep.tpe) def assignType(tree: untpd.Closure, meth: Tree, target: Tree)(implicit ctx: Context) = - tree.withType(if (target.isEmpty) meth.tpe.widen.toFunctionType else target.tpe) + tree.withType( + if (target.isEmpty) meth.tpe.widen.toFunctionType(tree.env.length) + else target.tpe) def assignType(tree: untpd.CaseDef, body: Tree)(implicit ctx: Context) = tree.withType(body.tpe) diff --git a/src/dotty/tools/dotc/typer/Typer.scala b/src/dotty/tools/dotc/typer/Typer.scala index 9c1110dd1..ebd33a6ff 100644 --- a/src/dotty/tools/dotc/typer/Typer.scala +++ b/src/dotty/tools/dotc/typer/Typer.scala @@ -1273,7 +1273,7 @@ class Typer extends Namer with TypeAssigner with Applications with Implicits wit if defn.isFunctionType(wtp) && !defn.isFunctionType(pt) => pt match { case SAMType(meth) - if wtp <:< meth.info.toFunctionType => + if wtp <:< meth.info.toFunctionType() => // was ... && isFullyDefined(pt, ForceDegree.noBottom) // but this prevents case blocks from implementing polymorphic partial functions, // since we do not know the result parameter a priori. Have to wait until the |