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WojciechMazur opened this issue Mar 10, 2025 · 1 comment · May be fixed by #23320
Open

Types unhandled by the scaladoc TASTy types support #22761

WojciechMazur opened this issue Mar 10, 2025 · 1 comment · May be fixed by #23320
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area:doctool itype:bug

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@WojciechMazur
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The following projects are emmiting warning when generating scaladoc:

scalapb/zio-grpc - build logs

rescala-lang/rescala - build logs

Compiler version

3.7.0-RC1-bin-20250307-977232c-NIGHTLY

Needs minimizaiton

Output

scala.MatchError: Encountered unsupported type. Report this problem to https://github.com/scala/scala3/.
<Internal compiler type SkolemType(1162214087) does not have a corresponding reflect extractor> (of class java.lang.String)
        at dotty.tools.scaladoc.tasty.TypesSupport.inner(TypesSupport.scala:324)
        at dotty.tools.scaladoc.tasty.TypesSupport.inner(TypesSupport.scala:272)
        at dotty.tools.scaladoc.tasty.TypesSupport.dotty$tools$scaladoc$tasty$TypesSupport$$topLevelProcess(TypesSupport.scala:77)
[warn]    |scala.MatchError: Encountered unsupported type. Report this problem to [https://github.com/scala/scala3/.](https://github.com/scala/scala3/)
[warn]    |FlexibleType(TypeRef(TermRef(ThisType(TypeRef(NoPrefix(), "nio")), "channels"), "Selector")) (of class java.lang.String)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport.inner(TypesSupport.scala:324)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport.dotty$tools$scaladoc$tasty$TypesSupport$$topLevelProcess(TypesSupport.scala:77)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport$TypeSyntax$.asSignature(TypesSupport.scala:29)

Expectation

Should be handled by scaladoc
@WojciechMazur WojciechMazur added itype:bug stat:needs triage Every issue needs to have an "area" and "itype" label labels Mar 10, 2025
@Gedochao Gedochao added area:doctool and removed stat:needs triage Every issue needs to have an "area" and "itype" label labels Mar 10, 2025
@WojciechMazur
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Actually this issue can be even found in our own codebase:

[warn] -- Warning: compiler/src/dotty/tools/MainGenericCompiler.scala:90:6 ------------
[warn] 90 |  val classpathSeparator = File.pathSeparator
[warn]    |  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[warn]    |scala.MatchError: Encountered unsupported type. Report this problem to [https://github.com/scala/scala3/.](https://github.com/scala/scala3/)
[warn]    |FlexibleType(TypeRef(TermRef(ThisType(TypeRef(NoPrefix(), "java")), "lang"), "String")) (of class java.lang.String)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport.inner(TypesSupport.scala:324)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport.dotty$tools$scaladoc$tasty$TypesSupport$$topLevelProcess(TypesSupport.scala:77)
[warn]    |	at dotty.tools.scaladoc.tasty.TypesSupport$TypeSyntax$.asSignature(TypesSupport.scala:29)

@2m 2m linked a pull request Jun 5, 2025 that will close this issue
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Add FlexibleType support for scaladoc 2m/scala3
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@Gedochao @WojciechMazur