an error Attempted reference resolution before document reached ComputedScopes state

[zrwsmd]

when i save a file,an error like below occured,i know it about langium document life cricle,but how should i solve it

[cdietrich]

do you have a complete trace inside your code where you access the ref?

[zrwsmd]

so for this error,is it because i did not use this services.shared.workspace.Mutex?if not ,how should i solve it,any suggestions?

[msujew]

Probably. I'm not too familiar with glsp, but I assume you're handling the method while the document builder is still at work.

Hm, calling the mutex is actually a bad idea here, since it will actually cancel the previous document build call. You should probably wait for #1291 to be done.

[zrwsmd]

all right,thanks a lot

[zrwsmd]

i have seen this #1291 has closed,so for my problem,how shold i solve it,how to extend mutex lock,any demo code to reference?

[msujew]

The fix will be released as part of v3.0. It contains a few major breaking changes which we want to consolidate before performing the release. You can expect the release some time in January.

Once the change is released, you can just use the new read method of the lock to read in a safe manner from the AST.

[msujew]

I have seen that a few times as well. It might be related to the way in which we answer LSP requests (i.e. immediately). See also #1291.

Note that it generally shouldn't be an issue - it will result in intermediate bad LSP responses, but nothing that would seriously impact the user experience.