WIP: Send code to REPL

[davidanthoff]

This is very experimental. You need to start one instance of julia with the following command:

julia -L server.jl

where server.jl is in the folder scripts.

You can then send selected text or the current line in the editor to that julia process via Ctrl+Enter.

You can start that julia REPL inside a VS code terminal window, and at that point you will have a rough integrated julia REPL and can send code from the editor to it.

This requires microsoft/vscode#8078 microsoft/vscode#547 for a really smooth implementation.

Things that need to be fixed:

• automatically start julia process inside a VS code REPL. Blocked by Allow extensions to run custom terminals microsoft/vscode#8078 Allow language extensions to expose a persistent interactive console (REPL) microsoft/vscode#547.
• reuse connection to julia server. I think right now I'm opening up a new connection for every command I send to the julia instance
• make cross-platform, right now only tested on Windows. Probably just need to make sure the name for named pipe works cross-platform
• error handling. There are many cases: julia instance closes, connection drops, and all sorts of other things
• come up with a plan for a testing story