How much of it is possible? I want to make a plugin for autocompletion and syntax highlighting that is cross-platform too.
The sourcekit library now builds in a single pass on Linux when the dispatch libraries are available in the build. This is in master, but it's not been cherry-picked yet onto the Swift 3.1 branch:
You should be able to cherry pick
onto swift 3.1 in order to have that built there.
At the moment the build scripts don't package up the libsourcekitd library in the downloadable builds but you can experiment with it like that.
Another proyect I'd like to take on is to make an error-checker for text editors. Is there a way of collecting compiling errors in some structure that is easy to handle with a program?
If not a Sublime/Atom/Vim plugin, I'd want to make a base for those plugins to be able to exist.
You should look at SourceKitten, which wraps libsourcekit with a network protocol, and at the Language Server Protocol which is a generic way of hosting language backends with a generic front end editor. There's also SDE which originally used sourcekitd-repl, but which looks like is targetting sourcekit for the upcoming 2.0 release:
On 20 Feb 2017, at 23:04, Félix Fischer via swift-dev <email@example.com> wrote: