Development

Client Setup

• Run cd client && bun install. This installs all necessary npm modules in the client
• Press Ctrl+Shift+B in VS Code to start compiling the client in watch mode.
• Switch to the Run and Debug View in the Sidebar (Ctrl+Shift+D).
• Select Launch Client from the drop down (if it is not already).
• Press ▷ to run the launch config (F5).
• In the Extension Development Host instance of VSCode, open a document with a .R extension.

Words of warning

The launch.json contains a setting:

"autoAttachChildProcesses": true,

For me this led to the issue that the language server wasn’t spawned because I had CodeLLDB from nixpkgs installed.

Roadmap

• static analysis
  • type checking
  • name binding
    • are all names defined
    • unused names (variables & parameters)
• variable renaming
• inlay hints

References

• https://github.com/microsoft/vscode-extension-samples/tree/main/lsp-sample
• https://github.com/semanticart/lsp-from-scratch
• https://github.com/IWANABETHATGUY/tower-lsp-boilerplate
• https://www.reddit.com/r/rust/comments/uu47mk/comment/i9dn0yg/
• https://github.com/FuelLabs/sway
• https://github.com/gleam-lang/gleam/tree/main/compiler-core/src/language_server
• https://github.com/jfecher/ante/blob/5f7446375bc1c6c94b44a44bfb89777c1437aaf5/ante-ls/src/main.rs#L163
• https://github.com/ziglang/vscode-zig/
• https://github.com/nix-community/vscode-nix-ide
• https://github.com/wch/r-source/blob/trunk/src/main/gram.y
• https://cran.r-project.org/doc/manuals/r-release/R-lang.html
• https://github.com/TenStrings/glicol-lsp/blob/77e97d9c687dc5d66871ad5ec91b6f049de2b8e8/src/main.rs#L16