sdedic opened a new pull request, #4287:
URL: https://github.com/apache/netbeans/pull/4287
In a mixed-language project, such as `micronaut-core/http`, each language
produces the output typically to a separate folder, although the output is in
form of .class files.
Currently Gradle project knows the set of output folders, but does not know
what language produces output in which particular one, so backwards mapping in
`SourceForBinaryQuery` provides **all source folders**, which is not correct.
In addition, the result of SFBQ query in Gradle/java says that sources
should be always preferred. This is fine in theory, but java uses (exclusively)
its cached indexed folders instead of the real output folders - so it is able
to react on editing changes even before they are compiled. But other languages
behave differently.
These two things in effect lead to spurious "undersolved symbol" when Java
code references some Groovy or Kotlin class:
- the `build/groovy/main/classes`, or `build/kotlin/main/classes` is on the
`classpath/compile` ClassPath; that's right
- since `preferSources` is true, java support attempts of SFBQ to find
sources. It gets a result.
- And to avoid **parsing**, it replaces the source folder with cache folder,
under assumption that the sources are indexed into .sig files Java can process.
The last thing is not true for groovy / kotlin, at least now. This could be
improved in Java support if it did not entirely replace the output folder with
the source, but used the output folder as a cache for the case the SFBQ result
folder and its cache does not contain the desired type.
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