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Scala3.3.1 cannot compile generic parameter definitions with annotations in Java? #18936
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Compiler complaint: illegal start of type
class OptionalExtractor implements ValueExtractor<Option<@ExtractedValue ?>> {
private OptionalExtractor() {
}
@Override
public void extractValues(Option<?> originalValue, ValueReceiver receiver) {
receiver.value(null, originalValue.isDefined() ? originalValue.get() : null);
}
}
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Replies: 1 comment 6 replies
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What dependency do I need to add in order to compile this?
Is it possible to provide a self-contained reproduction that doesn't require any dependency at all?
Is it a regression since Scala 2?
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Although modifying the compilation order can work
Okay, good, I was going to suggest that. Many projects don't need Mixed mode compilation (the default in sbt) and do fine with JavaThenScala or ScalaThenJava, which avoids having the Scala compiler process Java sources at all. (I think you know this, but stating it for the record anyway.)
publishLocal will still fail
Well, that seems strange. Do you have any insight into why?
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It's because of scaladoc. compileOrder doesn't work for scaladoc.
[error] class OptionalExtractor implements ValueExtractor<Option<@ExtractedValue ?>> {
[error] ^
[error] /Users/liguobin/Projects/smt/smt-common/src/main/scala/org/bitlap/common/OptionalExtractor.java:38:2: `>` expected but eof found.
[error] }
[error] ^
[error] two errors found
[error] Scaladoc generation failed
[error] at xsbt.Runner.run(ScaladocBridge.scala:50)
[error] at xsbt.ScaladocBridge.run(ScaladocBridge.scala:21)
[error] at sbt.internal.inc.AnalyzingCompiler.doc(AnalyzingCompiler.scala:154)
[error] at sbt.internal.inc.AnalyzingCompiler.doc(AnalyzingCompiler.scala:133)
[error] at sbt.Doc$.$anonfun$scaladoc1ドル(Doc.scala:52)
[error] at sbt.Doc$.$anonfun$scaladoc1ドル$adapted(Doc.scala:40)
[error] at sbt.RawCompileLike$.$anonfun$prepare1ドル(RawCompileLike.scala:79)
[error] at sbt.RawCompileLike$.$anonfun$prepare1ドル$adapted(RawCompileLike.scala:72)
[error] at sbt.RawCompileLike$.$anonfun$cached4ドル(RawCompileLike.scala:63)
[error] at sbt.RawCompileLike$.$anonfun$cached4ドル$adapted(RawCompileLike.scala:61)
[error] at sbt.util.Tracked$.$anonfun$inputChangedW1ドル(Tracked.scala:219)
[error] at sbt.RawCompileLike$.$anonfun$cached1ドル(RawCompileLike.scala:68)
[error] at sbt.RawCompileLike$.$anonfun$cached1ドル$adapted(RawCompileLike.scala:52)
[error] at sbt.Defaults$.$anonfun$docTaskSettings4ドル(Defaults.scala:2156)
[error] at scala.Function1.$anonfun$compose1ドル(Function1.scala:49)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u22191ドル(TypeFunctions.scala:62)
[error] at sbt.std.Transform$$anon4ドル.work(Transform.scala:68)
[error] at sbt.Execute.$anonfun$submit2ドル(Execute.scala:282)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] at sbt.Execute.work(Execute.scala:291)
[error] at sbt.Execute.$anonfun$submit1ドル(Execute.scala:282)
[error] at sbt.ConcurrentRestrictions$$anon4ドル.$anonfun$submitValid1ドル(ConcurrentRestrictions.scala:265)
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I was going to ask in chat how projects doc their java. stdlib has at least one public java class that is undocumented. I think scaladoc should be more helpful here. (I noticed that while looking at a scaladoc bug.)
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compileOrder doesn't work for scaladoc
even if you set it in Compile / doc (as well as Compile / compile)?
if there's no way around this, it seems like it should be an sbt ticket or a scala/bug ticket, wherever the root cause is?
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I have tried ,but sbt said there's a key that's not used by any other settings/tasks
[info] loading settings for project smt from build.sbt ...
[info] set current project to smt (in build file:/Users/liguobin/Projects/smt/)
[warn] there's a key that's not used by any other settings/tasks:
[warn]
[warn] * smt-common / Compile / doc / compileOrder
[warn] +- /Users/liguobin/Projects/smt/build.sbt:70
[warn]
[warn] note: a setting might still be used by a command; to exclude a key from this `lintUnused` check
[warn] either append it to `Global / excludeLintKeys` or call .withRank(KeyRanks.Invisible) on the key
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