Java formatting

[Gama11]

Are there any plans to support Java formatting? According to https://clang.llvm.org/docs/ClangFormat.html, this is supported by clang-format.

Presumably this would mostly be UI work, and clang-format could be called the same way?

[wangzw]

That‘s very cool. Would you like to contribute to this feature?

[Gama11]

I actually got it working in a fork - the functionality itself was simple, the big issue is the CDT dependency. Not sure if you can have optional dependencies in Eclipse plugins? I ended up just removing all CDT references to make it work. Either way, having CDT installed should obviously not be a requirement for formatting Java code.

[RalphSteinhagen]

Nice and very useful tool!

Would it be possible to merge @Gama11's proposed commit 6edf38b be and eventually release this? The commit seems to be fairly small... I'd use it even with the CDT dependency as we are also using C/C++ in addition to Java.

Many thanks in advance and thanks again for your good work!

[AhmetBilgin]

I actually got it working in a fork - the functionality itself was simple, the big issue is the CDT dependency. Not sure if you can have optional dependencies in Eclipse plugins? I ended up just removing all CDT references to make it work. Either way, having CDT installed should obviously not be a requirement for formatting Java code.

Hi Gama11,
your Java-Fork seems to be failing, when you also have active SaveActions (Preferences -> Java -> Editor -> Save Actions).

Steps to reproduce:

• Remove an @OverRide annotation and also change some formatting which the formatter should handle.
• The Formatter formats the code
• The SaveActions restore the @OverRide Annotation and fails, because of the previous actions of the formatter.
  -- Save action: Add missing '@OverRide' annotations

I didn't understand yet, why the SaveAction fails in combination with the formatter.
Do you have any idea?

Also I saw that you didn't add the ClangFormatFormatter as a JavaFormatter via the extension point

Did you encounter problems with this and decided not to implement it as a formatter?

[AhmetBilgin]

I got a version which works fine for Java in my fork:
ClangFormat4J

[gregbown]

I have tried both CppStyle and ClangFormat4J and the functionality seemed identical in the latest Eclipse (Version: 2023-03 (4.27.0)) configured to format on save.
I am using clang-format 16.0.4.
Maybe I am not set up correctly and am seeing the default Eclipse format because when I compare the clang-format with IntelliJ it responds quite different (more as I would expect clang-format)
My goal is to get identical formatting across IDE so we do not have differences introduced based on editor.