Add Code Completion for object properties

[HiramTheHero]

In the following example:

julia> using RDatasets;

julia> iris = RDatasets.dataset("datasets","iris");

julia> propertynames(iris)
5-element Vector{Symbol}:
 :SepalLength
 :SepalWidth
 :PetalLength
 :PetalWidth
 :Species

It would be great that when I type iris. I would have Language Server give me a code completion list of the properties of the object.

I don't understand how the LanguageServer ecosystem really works. The most information I've found on the topic is #734. Is something like this feasible? If so, I am more than willing to try and implement such a feature.

Not sure if this is the right place to put this feature request. I just know that it would be great to have this functionality in neovim.

Thank you for the hard work you all have put into this package.

[pfitzseb]

This isn't possible with the current LanguageServer.jl design, since the LS doesn't have access to the object itself and there's no way to statically determine the property names. A hybrid solution where we fetch these runtime completions from the REPL is possible (and indeed implemented):

[HiramTheHero]

Thank you for the information. I haven't experienced anything like this in neovim. Is this exclusively a vscode feature? Or is this functionality within another Julia package?

[pfitzseb]

Is this exclusively a vscode feature?

Yes. We need a REPL we know how to talk to which has the object in memory.

[HiramTheHero]

Good to know. I wasn't aware of this feature, even when I was using vscode. I didn't realize I had to enable Julia: Runtime Completions within settings. For some reason it was off. Thanks for the information.