diff options
Diffstat (limited to 'src/dotty/tools/dotc/core')
| -rw-r--r-- | src/dotty/tools/dotc/core/TypeApplications.scala | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/dotty/tools/dotc/core/TypeApplications.scala b/src/dotty/tools/dotc/core/TypeApplications.scala index 817aaee15..17573466f 100644 --- a/src/dotty/tools/dotc/core/TypeApplications.scala +++ b/src/dotty/tools/dotc/core/TypeApplications.scala @@ -295,7 +295,7 @@ class TypeApplications(val self: Type) extends AnyVal { * no type field named `p` in this type, or `p` is a named type parameter of this type. * The first case is important for the recursive case of AndTypes, because some of their operands might * be missing the named parameter altogether, but the AndType as a whole can still - * contain it. + * contain it. */ final def widenToNamedTypeParams(params: Set[TypeSymbol])(implicit ctx: Context): Type = { @@ -311,10 +311,11 @@ class TypeApplications(val self: Type) extends AnyVal { /** Widen type by forming the intersection of its widened parents */ def widenToParents(tp: Type) = { - val parents = tp.parents.map(p => tp.baseTypeWithArgs(p.symbol)) - ctx.typeComparer.glb(parents.map(_.widenToNamedTypeParams(params))) + val parents = tp.parents.map(p => + tp.baseTypeWithArgs(p.symbol).widenToNamedTypeParams(params)) + parents.reduceLeft(ctx.typeComparer.andType(_, _)) } - + if (isOK(self)) self else self match { case self @ AppliedType(tycon, args) if !isOK(tycon) => |