diff options
Diffstat (limited to 'src/dotty/tools/dotc/typer/Variances.scala')
| -rw-r--r-- | src/dotty/tools/dotc/typer/Variances.scala | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/typer/Variances.scala b/src/dotty/tools/dotc/typer/Variances.scala index e88423f98..9af11a0f4 100644 --- a/src/dotty/tools/dotc/typer/Variances.scala +++ b/src/dotty/tools/dotc/typer/Variances.scala @@ -83,6 +83,17 @@ object Variances { flip(varianceInTypes(paramTypes)(tparam)) & varianceInType(tp.resultType)(tparam) case ExprType(restpe) => varianceInType(restpe)(tparam) + case tp @ HKApply(tycon, args) => + def varianceInArgs(v: Variance, args: List[Type], tparams: List[MemberBinding]): Variance = + args match { + case arg :: args1 => + varianceInArgs( + v & compose(varianceInType(arg)(tparam), tparams.head.memberVariance), + args1, tparams.tail) + case nil => + v + } + varianceInArgs(varianceInType(tycon)(tparam), args, tycon.typeParams) case tp @ PolyType(_) => flip(varianceInTypes(tp.paramBounds)(tparam)) & varianceInType(tp.resultType)(tparam) case AnnotatedType(tp, annot) => |