Go to references

[sir4ur0n]

Hi,

It looks like HLS currently doesn't support "Go to References" family of features, am I correct?

Basically this allows one to find places where a particular piece of code (function/type) is used.

What do you think about adding this feature?

Cheers

[fendor]

Hi!

Indeed, hls does not support this feature yet.
There is a WIP branch of ghcide to support it: https://github.com/wz1000/ghcide/tree/hiedb-2
It uses HIE files and a sqlite database.
I use this branch as a daily driver but it still has some bugs.

Maybe @wz1000 can tell us how we can help to get this feature :)

[jneira]

There is a open pr to add hie-db to ghcide, it should add this feature.

[jneira]

In ghcide @meditans mentioned the find-references feature. As it seems to be related with this we are gonna include here.
In vscode the unique command i can find is References: Find All Implementantions. Not sure if @meditans was referring to though.

[meditans]

@jneira in emacs there's the command lsp-find-definition that works as intended, and the command lsp-find-references that should bring you to where a variable is used and instead gives back the error:

helm-M-x-execute-command: The connected server(s) does not support method textDocument/references.
To find out what capabilities support your server use ‘M-x lsp-describe-session’

How were @fendor and @wz1000 using it?

More broadly, I'm not sure what the status of this feature is, as the linked issue haskell/ghcide#898 has been recently closed with the migration to hls. Who is working on this? What needs to be done?

[jneira]

that ghcide pr has been moved to this repo as #704

[jneira]

And the pr has been merged so go to references should work now
@sir4ur0n @meditans