diff options
Diffstat (limited to 'src/dotty/tools/dotc/core/TypeApplications.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/TypeApplications.scala | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/dotty/tools/dotc/core/TypeApplications.scala b/src/dotty/tools/dotc/core/TypeApplications.scala index de42b3e5f..a5e24c5ff 100644 --- a/src/dotty/tools/dotc/core/TypeApplications.scala +++ b/src/dotty/tools/dotc/core/TypeApplications.scala @@ -279,15 +279,20 @@ class TypeApplications(val self: Type) extends AnyVal { default } } - + /** Translate a type of the form From[T] to To[T], keep other types as they are. * `from` and `to` must be static classes, both with one type parameter, and the same variance. + * Do the same for by name types => From[T] and => To[T] */ - def translateParameterized(from: ClassSymbol, to: ClassSymbol)(implicit ctx: Context): Type = - if (self.derivesFrom(from)) - if (ctx.erasedTypes) to.typeRef - else RefinedType(to.typeRef, to.typeParams.head.name, self.member(from.typeParams.head.name).info) - else self + def translateParameterized(from: ClassSymbol, to: ClassSymbol)(implicit ctx: Context): Type = self match { + case self @ ExprType(tp) => + self.derivedExprType(tp.translateParameterized(from, to)) + case _ => + if (self.derivesFrom(from)) + if (ctx.erasedTypes) to.typeRef + else RefinedType(to.typeRef, to.typeParams.head.name, self.member(from.typeParams.head.name).info) + else self + } /** If this is repeated parameter type, its underlying Seq type, * or, if isJava is true, Array type, else the type itself. |