Fix java typer problems with inner class references and raw types #19747
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sjrd
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Feb 21, 2024
| @@ -34,7 +34,7 @@ object ContextOps: | |||
| if (elem.name == name) return elem.sym.denot // return self | |||
| } | |||
| val pre = ctx.owner.thisType | |||
| if ctx.isJava then javaFindMember(name, pre, required, excluded) | |||
| if ctx.isJava then javaFindMember(name, pre, lookInCompanion = true, required, excluded) | |||
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Why are we allowed to look in the companion here? This probably deserves a comment more than the false case.
tests/run/i19619/RawTypesGen.java
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| package lib; | ||
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| public class RawTypesGen<W> { |
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potential TODO: tree's of Raw types from Java are still incorrect once they are serialized to TASTy, however it is debateable if we care to support them.
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this was the error in CI: -- [E083] Type Error: tests/pos-java-interop-separate/inner-fbounds/Configurer_1.java:6:40 -----------------------------
6 | public final class Registry extends AbstractRegistry<Registry> {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
| AbstractConfigurer is not a valid class prefix, since it is not an immutable path
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| longer explanation available when compiling with `-explain`this basically means that we can not widen the prefix of Java types, or you have to turn off the stability checker in Typer for Java types, or you only widen at Pickler. So I'll have to give up on preventing illegal types in Scala sources for java types like |
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(If we widen Foo.this.Inner in the parents of a class to AbstractFoo#Inner, i.e. an inherited class Inner prefixed by its owner abstract class AbstractFoo, this is not considered a stable prefix for a class parent type. But in Java this is the correct type so allow it.)
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sjrd
approved these changes
Feb 22, 2024
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Tests changes against source dependency, Tasty dependency, and class dependency.
fixes #19619