intellij-lsp-server VS rust-analyzer

I once had the idea of implementing an LSP server by embedding it as an IntelliJ plugin and backgrounding the IDE while doing the actual coding in Emacs.

It kind of worked, but once I stopped needing to use Java for my job it became too much of a hassle to flesh out.

https://github.com/Ruin0x11/intellij-lsp-server

The LSP means every single language server has to reinvent the wheel again and again.

It’d have been much more useful to build bindings for IDEA plugins so they could be integrated into arbitrary editors, especially as the IDEA plugins for most languages even after several years of LSP development are still superior.

All in all it’s like the whole JVM vs. WASM, Java vs Electron story again, with someone deciding to reinvent the wheel but worse.

There’s even bindings like https://github.com/Ruin0x11/intellij-lsp-server or https://plugins.jetbrains.com/plugin/10209-lsp-support to glue it all back together.

It’d have been much simpler to reuse an existing ecosystem from the start.

go build 3.62s user 0.76s system 171% cpu 2.545 total

I was looking forward to parallel front-end[4], but I have not seen any improvement for these small changes.

[1]: https://github.com/rust-lang/rust-analyzer

For example, intelephense can show diagnostics in real time, there is no need to save the file to get new diagnostics. But rust-analyzer, the language server for rust, can only update diagnostics after saving the file.

6. Rust Analyzer

The rust-analyzer readme suggests you go here for support request. But even there, you'll need to provide more details to get useful help.

For example: https://github.com/rust-lang/rust-analyzer/blob/master/docs/...

> If you create an LSP, it will work best in VS Code.

Any editor can work just as well as (or even better than) VS Code.

So, apparently the reason why rust-analyzer, the LSP server for Rust does not have persistent caching is because it would make "optimizing initial passes less important".

All I want to know is: Will it have a build configuration pulldown?

I am not a Rust dev. It surely looks great.

However, from what I understand it seems to supply just a parser separate from the Rust compiler (https://github.com/rust-lang/rust-analyzer/tree/master/crate...) trying to keep up with Rust‘s development. So, in principle, it could have been just another treesitter parser plugin, too.

So, again, the LSP framework does not directly provide any magical benefit over a static parsing framework. All the semantic analysis capabilities stem from a good parser.

rust-analyzer > manual > helix > binary > rustup component add rust-analyzer