Reusing "warm parsers"

[cdietrich]

hi, do you have any experience or best practice to (reuse) warm parm parsers
in an (node) application aka avoid the very expensive performSelfAnalysis calls

[msujew]

Hey @cdietrich,

you mean when you recreate the services container multiple times? We hadn't had any performance issues with it yet - but I can imagine you can actually cache the warm parser and pass it to the other service containers. I don't think that should lead to any issues, because the parser does not store any data.

[cdietrich]

Yes we had a place where we call create services multiple times which ofc also leads to the parser be created over and over again.
I guess in our usecase we will just create services only and reuse it and don’t use common infra like langiumdocuments / workspace at all as we won’t really need it (might need to trick around document state so local reference resolving works and document validation to get lexer and parser messages copied over to diagnostics