TastyInspector crashes when creating a TypeRepr of non-primitive type

[jodersky]

Compiler version

3.0.2, 3.1.0 and 3.1.1-RC1

Seems to be ok on 3.0.0

Minimized code

import scala.quoted.Quotes
import scala.tasty.inspector as ins
import scala.tasty.inspector.TastyInspector

class Traverser() extends ins.Inspector {

  def inspect(using q: Quotes)(tastys: List[ins.Tasty[q.type]]): Unit = {
    import q.reflect._

    TypeRepr.of[Int] // ok

    TypeRepr.of[String] // fail
    // java.util.NoSuchElementException: None.get while compiling out/app/jar/dest/out.jar
    // Exception in thread "main" java.util.NoSuchElementException: None.get
    //     at scala.None$.get(Option.scala:627)
    //     at scala.None$.get(Option.scala:626)
    //     at dotty.tools.dotc.quoted.QuotesCache$.getTree(QuotesCache.scala:19)
    //     at dotty.tools.dotc.quoted.PickledQuotes$.unpickle(PickledQuotes.scala:183)
    //     at dotty.tools.dotc.quoted.PickledQuotes$.unpickleTypeTree(PickledQuotes.scala:66)
    //     at scala.quoted.runtime.impl.QuotesImpl.unpickleType(QuotesImpl.scala:2975)
    //     at Traverser.inspect(main.scala:11)
    //     at scala.tasty.inspector.TastyInspector$TastyInspectorPhase$1.runOn(TastyInspector.scala:73)
    //     at dotty.tools.dotc.Run.runPhases$4$$anonfun$4(Run.scala:261)
    //     at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
    //     at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
    //     at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
    //     at dotty.tools.dotc.Run.runPhases$5(Run.scala:272)
    //     at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:280)
    //     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
    //     at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:68)
    //     at dotty.tools.dotc.Run.compileUnits(Run.scala:289)
    //     at dotty.tools.dotc.Run.compileUnits(Run.scala:228)
    //     at dotty.tools.dotc.fromtasty.TASTYRun.compile(TASTYRun.scala:12)
    //     at dotty.tools.dotc.Driver.doCompile(Driver.scala:39)
    //     at dotty.tools.dotc.Driver.process(Driver.scala:199)
    //     at dotty.tools.dotc.Driver.process(Driver.scala:167)
    //     at dotty.tools.dotc.Driver.process(Driver.scala:179)
    //     at scala.tasty.inspector.TastyInspector$.inspectFiles(TastyInspector.scala:112)
    //     at scala.tasty.inspector.TastyInspector$.inspectAllTastyFiles(TastyInspector.scala:58)
    //     at main$package$.main(main.scala:32)
    //     at main.main(main.scala:25)
  }

}

@main() def main() = {

  val inspector = Traverser()
  scala.tasty.inspector.TastyInspector.inspectAllTastyFiles(
    Nil,
    "out/app/jar/dest/out.jar" :: Nil, // this is the jar of this program. Although we're not actually doing anything, we need to pass in at least one file, otherwise the bug does not manifest itself
    Nil
  )(inspector)

}

Mill build config

// install mill:
// curl -sS -L "https://github.com/com-lihaoyi/mill/releases/download/0.9.9/0.9.9" > mill && chmod +x mill

import mill._, scalalib._

object app extends ScalaModule {
  def scalaVersion = "3.1.0"
  def ivyDeps = Agg(
    ivy"org.scala-lang::scala3-tasty-inspector:${scalaVersion()}"
  )
}

Run mill app.jar && mill app in order to compile and run the program.

You can also get the fully working example here: https://github.com/jodersky/tasty-inspector-typerepr

Output (click arrow to expand)

The error as shown in the comment in the snippet above