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Harden Annotation.refersToParamOf #24647

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Merged
mbovel merged 1 commit into from
Dec 3, 2025
Merged

Harden Annotation.refersToParamOf #24647

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17 changes: 11 additions & 6 deletions compiler/src/dotty/tools/dotc/core/Annotations.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -117,13 +117,18 @@ object Annotations {
def isLambdaParam(t: Type) = t match
case TermParamRef(tl1, _) => tl eq tl1
case _ => false
tpd.allArguments(tree).exists: arg =>
if arg.isType then
arg.tpe.existsPart(isLambdaParam, stopAt = StopAt.Static)
else
arg.existsSubTree:

val acc = new TreeAccumulator[Boolean]:
def apply(x: Boolean, t: Tree)(using Context) =
if x then true
else if t.isType then
t.tpe.existsPart(isLambdaParam, stopAt = StopAt.Static)
else t match
case id: (Ident | This) => isLambdaParam(id.tpe.stripped)
case _ => false
case _ => foldOver(x, t)

tpd.allArguments(tree).exists(acc(false, _))
end refersToParamOf

/** A string representation of the annotation. Overridden in BodyAnnotation.
*/
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