Feature Request: Support Eclipse "Source Clean Up" actions

[ghokun]

Eclipse provides a feature called Clean up (Right click a source folder: Source -> Clean Up). Clean up profile can be defined from
Preferences -> Java -> Code Style -> Clean Up. Clean up profiles can be exported to an xml file.

Like format settings, clean up settings could be set up with an xml file.

{
    "java.format.settings.url": "...",
    "java.cleanup.settings.url" : "..."
}

Also, I would like to contribute to this issue, if someone points me to the right direction.

mentioned in #1379

[xtianus79]

@jdneo and @testforstephen is there any update on this a year later?

[chriscasola]

I am interested in this feature as well - any update? Or pointers on how to contribute?

[jcolladosp]

Hi guys, do you know if there's any update on this?
Thanks

[gayanper]

Anything stopping this enhancement? I see most of cleanup implementation doesn’t have ui component dependencies. Could we move those in jdt ui like we have done for type hierarchy?

or are we looking at handling this in a different way for vscode ? Like having individual cleanup as code actions?

@testforstephen @jdneo @rgrunber

[testforstephen]

Assign to @rgrunber since his team is working on this area recently.

[rgrunber]

We started doing this through the new setting java.cleanup.actionsOnSave (through https://github.com/eclipse/eclipse.jdt.ls/blob/master/org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/cleanup/CleanUpRegistry.java in JDT-LS). Currently supported ones are https://github.com/redhat-developer/vscode-java/blob/master/document/_java.learnMoreAboutCleanUps.md#java-clean-ups .

Any from the following list could be supported though :

Might be best to prioritize the more interesting ones.

They could probably be added to the "Source Action" menu with just a few lines of code. In order to get them as code actions (quick assists), the cleanup would need to have some helper method to have it apply on an individual ASTNode as opposed to on the entire CompilationUnit, but that should be possible.

[blacelle]

Hello. I've tried integrating Eclipse CleanUp into Spotless (diffplug/spotless#1587) but there is still quite a long way to go. I feel some effort would be shared with the one in vscode-java.

Concurrently, you may wish to have a look into Cleanthat which offers a various list of similar CleanUp rules (Mutators).