A Language Server (LSP) for the Janet programming language.

The goal of this project is to provide an augmented editor/tooling experience for Janet, via a self-contained, Language Server Protocol-compliant language server (which is itself implemented in Janet!).

Current features include:

• Partial auto-completion based on defined symbols
• On-hover definition of symbols as returned by (doc ,symbol)
• Inline compiler errors

Planned features include:

• Additional autocompletion support
• Jump to definition/implementation
• Find references from definition/implementation
• Refactoring helps
• Symbol renaming helps

Possible (but de-prioritized) features include:

• Syntax highlighting for Janet via semantic tokens

Desirable, but possibly more complicated/difficult features include:

• Stand-alone (i.e. non-Editor-dependent) usage via API/CLI

• Windows/MacOS support is mostly untested and, in the case of Windows, known to be somewhat glitchy. Contributions welcome here.
• The only editor integration currently tested against is Visual Studio Code.
• I've never written a language server before, so I don't really know what I'm doing. Help me, if you'd like!

Currently, the only editor tested and known working with Janet LSP is Visual Studio Code, which you can try/take advantage of by installing the Janet++ extension from the VS Code marketplace.

Other editors that implement LSP client protocols, either built-in or through editor extensions, include:

• Emacs
• vim/neovim
• Sublime Text
• Helix
• Kakoune

If you get Janet LSP working with any of these options, please let me know!

Requires Janet and jpm.

$ git clone https://github.com/CFiggers/janet-lsp
$ cd janet-lsp
$ jpm deps
$ jpm build

After running the commands above, the following command will copy the janet-lsp binary to a location that can be executed via the command line.

$ jpm install

Issues and Pull Requests welcome.

This project is a hard fork from (with much appreciation to) JohnDoneth/janet-language-server, which is Copyright (c) 2022 JohnDoneth and contributors.