[WIP] server: initial cut of vgo-aware type loader

[myitcv]

DO NOT MERGE

Requires vgo as of https://go-review.googlesource.com/c/vgo/+/105855

Note: this is based atop #23

The current diff for this PR can be see here:

myitcv/gocode@import_name_qualify...myitcv:vgo_loader

[OneOfOne]

@myitcv I have forked this package and maintaining it on https://github.com/OneOfOne/gocode for now and with this PR, and I'm using it locally as well.

You are more than welcome to rebase on my fork, or if you update this PR yo ucan tag me and I'll rebase.

I plain on maintaining my fork until mdempsky gets back to this repo or go-langserver implements proper code completion without gocode.

[mdempsky]

Thanks for working on this. I haven't really kept up with vgo progress, so maybe you can help bring me up to speed on two questions:

1. Why does gocode need to know about vgo?

2. Assuming we do need a vgo-aware go/importer.Importer implementation, shouldn't that implementation live within the x/vgo or x/tools repo? I'm assuming we'd want gotype, guru, etc. to work with vgo too. Or is there something gocode-specific about this importer?

[rsc]

@myitcv, could you please stop sending these pull requests to projects, even marked DO NOT MERGE. They're confusing people.

[myitcv]

@rsc apologies. I'll close this.