LSP Activates On Workspace Files, LSP Document Open/Close

[thecoolwinter]

Description

Main changes:

• Reworks the LanguageServer type to use the existing workspace file management system.
• Initializes servers when code files are opened in a workspace where there's no server running.
• Shuts down servers when a workspace is closed.

Misc details:

• Updates some LanguageServer methods to read more like sentences. Eg: instead of server.requestDocumentHighlight(document: document) an API consumer would read server. requestHighlight(for: document)
• Updates the language server methods to have consistent error logging and catching. This was discussed on Discord.
• Raises the language detection from the editor UI to the CodeFileDocument class. A new method getLanguage() guesses the language for the document unless it has been overriden.
• Adds a LazyService dep injection property wrapper that is the same as Service but evaluates the service lazily. See usage.
• Consolidates URL extensions to one folder.
• Changes the LanguageServer struct to a class. It's a long-living value that we'll need to reference in things like a text coordinator so a class makes more sense here. @FastestMolasses and I have had a bit of a back and forth on this. Originally it was made a struct to make async/await easier. So I investigated making it Sendable to fulfill that goal. However it needs to manage state like opened files, which breaks the immutability of sendable values.

Related Issues

N/A

Checklist

• I read and understood the contributing guide as well as the code of conduct
• The issues this PR addresses are related to each other
• My changes generate no new warnings
• My code builds and runs on my machine
• My changes are all related to the related issue above
• I documented my code

[austincondiff]

Real solid work @thecoolwinter! 👍

[tom-ludwig]

Amazing PR! 🎉 Just a few updates needed in the docs 👍

[thecoolwinter]

Sorry @austincondiff need another approval, fixed a failing test related to a subtle bug in #1840.

[matthijseikelenboom]

Great progress! Left some a small amount of comments

[0xWDG]

LGTM, i agree with the points of @matthijseikelenboom

[thecoolwinter]

Tracking issue for the commented-out event and notification handlers: #1888

Stale