Introduce a low priority background workspace indexer

[dbanck]

Language Server Version

v0.34.0

Problem Statement

The rearchitecture in #1667 changed the way we index a workspace. Instead of doing all the work at startup, we now index a directory when a user opens a file in it. This brings a lot of performance gains, but also cripples language server protocol features that work at the workspace level, such as the workspaces symbols handler.

To still be able to resolve this request without missing data, we could introduce a low-priority background indexer to prepare the data. Another solution worth exploring might be, indexing the full workspace once a workspace symbol request is received.

Related LSP methods

No response

References

• LS state & performance refactoring #1667

Help Wanted

• I'm interested in contributing a fix myself

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