Description
Describe the bug
Adding JavaFX 24 dependencies to a project causes compiler errors, resulting in malfunctioning autocomplete etc.
Simple project:
//> using scala 3.7.1
//> using dep org.scalafx::scalafx::24.0.0-R35
@main
def main(): Unit =
val s: Scene = ???causing Metals error:
#### Error stacktrace:
scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8)
dotty.tools.dotc.core.classfile.ClassfileParser$AbstractConstantPool.getSuperClass(ClassfileParser.scala:175)
dotty.tools.dotc.core.classfile.ClassfileParser.parseParents$1(ClassfileParser.scala:380)
dotty.tools.dotc.core.classfile.ClassfileParser.parseClass(ClassfileParser.scala:395)
dotty.tools.dotc.core.classfile.ClassfileParser.$anonfun$1(ClassfileParser.scala:302)
dotty.tools.dotc.core.classfile.ClassfileParser.run(ClassfileParser.scala:297)
dotty.tools.dotc.core.ClassfileLoader.doComplete(SymbolLoaders.scala:471)
dotty.tools.dotc.core.SymbolLoader$$anon$1.doComplete(SymbolLoaders.scala:378)
dotty.tools.dotc.core.SymbolLoader.complete(SymbolLoaders.scala:402)
dotty.tools.dotc.core.SymDenotations$SymDenotation.completeFrom(SymDenotations.scala:175)
dotty.tools.dotc.core.SymDenotations$SymDenotation.completeOnce(SymDenotations.scala:385)
dotty.tools.dotc.core.SymDenotations$SymDenotation.isAbsent(SymDenotations.scala:615)
dotty.tools.dotc.interactive.Completion$.isValidCompletionSymbol(Completion.scala:340)
dotty.tools.dotc.interactive.Completion$Completer.dotty$tools$dotc$interactive$Completion$Completer$$include(Completion.scala:658)
dotty.tools.dotc.interactive.Completion$Completer$$anon$5.applyOrElse(Completion.scala:687)
dotty.tools.dotc.interactive.Completion$Completer$$anon$5.applyOrElse(Completion.scala:686)
scala.collection.immutable.List.collect(List.scala:268)
scala.collection.immutable.List.collect(List.scala:79)
dotty.tools.dotc.interactive.Completion$Completer.accessibleMembers(Completion.scala:688)
dotty.tools.dotc.interactive.Completion$Completer.scopeCompletions$$anonfun$1(Completion.scala:412)
scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
scala.collection.IterableOnceOps.foreach(IterableOnce.scala:619)
scala.collection.IterableOnceOps.foreach$(IterableOnce.scala:617)
dotty.tools.dotc.core.Contexts$Context$$anon$2.foreach(Contexts.scala:135)
dotty.tools.dotc.interactive.Completion$Completer.scopeCompletions(Completion.scala:402)
dotty.tools.dotc.interactive.Completion$.scopeContext(Completion.scala:59)
dotty.tools.pc.IndexedContext$LazyWrapper.<init>(IndexedContext.scala:91)
dotty.tools.pc.IndexedContext$.apply(IndexedContext.scala:80)
dotty.tools.pc.completions.CompletionProvider.completions(CompletionProvider.scala:110)
dotty.tools.pc.ScalaPresentationCompiler.complete$$anonfun$1(ScalaPresentationCompiler.scala:191)
#### Short summary:
java.lang.AssertionError: assertion failed: attempt to parse java.lang.Object from classfile
Expected behavior
No response
Operating system
Windows
Editor/Extension
VS Code
Version of Metals
v1.6.0
Extra context or search terms
No response
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tgodzik commentedon Jun 17, 2025
Thanks for reporting! I started looking at it, but it seems more complex than first assumed. Will probably have another look later this week.
tgodzik commentedon Jun 23, 2025
Looks to be related to scala/scala3#20421 (comment)
chore: Improve completions when a lot of exports are present
tgodzik commentedon Jun 24, 2025
Should be fixed by scala/scala3#23414
RumbleTumbleKid commentedon Jun 29, 2025
Metals SNAPSHOT works with the OP project but not with this one:
same error
tgodzik commentedon Jul 1, 2025
Looks like the same error, will be fixed in 3.3.7 and 3.7.3 compiler versions
chore: Improve completions when a lot of exports are present (scala#2…
chore: Improve completions when a lot of exports are present
chore: Improve completions when a lot of exports are present