Fix partially #30 (only Scala 3) (#278)

zio · May 30, 2022 · ff7fe84 · ff7fe84
1 parent 2acf71e
commit ff7fe84
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/izumi-reflect/izumi-reflect/src/main/scala-3/izumi/reflect/TagMacro.scala b/izumi-reflect/izumi-reflect/src/main/scala-3/izumi/reflect/TagMacro.scala
@@ -43,8 +43,6 @@ final class TagMacro(using override val qctx: Quotes) extends InspectorBase {
     typeRepr.dealias match {
       case x @ TypeRef(ThisType(_), _) if x.typeSymbol.isAbstractType && !x.typeSymbol.isClassDef => summonTag(x)
 
-      case x if x.typeSymbol.isTypeParam => summonTag(x)
-
       case AppliedType(ctor, args) =>
         val ctorTag = createTagExpr(ctor.asType)
         val argsTags = Expr.ofList(args.map(mkLtt))
@@ -65,6 +63,8 @@ final class TagMacro(using override val qctx: Quotes) extends InspectorBase {
         val ltts: Expr[List[LightTypeTag]] = Expr.ofList(ltts0)
         '{ Tag.unionTag[T](classOf[Any], $ltts) }
 
+      case x if x.typeSymbol.isTypeParam => summonTag(x)
+
       case _ =>
         throw new Exception(s"Unsupported type: $typeRepr")
     }

diff --git a/izumi-reflect/izumi-reflect/src/test/scala-3/izumi/reflect/test/TagTest.scala b/izumi-reflect/izumi-reflect/src/test/scala-3/izumi/reflect/test/TagTest.scala
@@ -23,6 +23,15 @@ class TagTest extends SharedTagTest with TagAssertions {
       assertNotChild(Tag[Animal | String].tag, Tag[Dog | String].tag)
     }
 
+    "Support HKTag for unapplied type lambdas with type bounds" in {
+      trait X
+      trait XAble[A <: X]
+      class Y extends X
+
+      def getTag[F[_ <: X]: Tag.auto.T] = Tag[F[Y]]
+
+      assertSame(getTag[XAble].tag, Tag[XAble[Y]].tag)
+    }
   }
 
 }