Implemented Workspace-D

[Scellow]

No description provided.

[Scellow]

There are some issues:

• It is slow to start (index every imports + sdk) and it is done while the project is loading, should be done async
• It requieres a modified version of workspace-d (until this PR gets merged: Fix use of extended DCD output Pure-D/workspace-d#88)

Questions:

If this PR is merged then users will have to download yet another tool

So we need a way to distribute the tools easily, an installer with prebuilt/tested binaries sounds like the best solution, what do you think ?

[pirocks]

So we need a way to distribute the tools easily, an installer with prebuilt/tested binaries sounds like the best solution, what do you think ?

There was talk a while ago about building all the tools with dub(it should be possible using only dub fetch/dub build).

It is slow to start (index every imports + sdk) and it is done while the project is loading, should be done async

I put some comments about this on your other PR. You can start workspace-d async, by wrapping the relevant code in the following:

 val task = object : Task.Backgroundable(project,"Starting Workspace-d") {
    override fun run(indicator: ProgressIndicator) {
        //code for starting workspace-d goes here
    }
}
ProgressManager.getInstance().runProcessWithProgressAsynchronously(task, BackgroundableProcessIndicator(task))

[SingingBush]

org.jetbrains.rpc.LOG isn't resolved for me. Where does that come from? The com.intellij.openapi.diagnostic.Logger class should be used for logging.

[SingingBush]

if using Logger this line could be a warn() or info()

[SingingBush]

I'm not keen on bundling pre-built binaries but a convenient option for downloading is fine. DScanner now has pre-built binaries for Windows, Mac, and Linux but DCD and dfmt aren't there yet. Using dub is probably the only reliable option at the moment.

Is the work on this PR complete? If so please rebase it with current develop branch