Note: This site is currently "Under construction". I'm migrating to a new version of my site building software. Lots of things are in a state of disrepair as a result (for example, footnote links aren't working). It's all part of the process of building in public. Most things should still be readable though.

rust-analyzer JSON-RPC STDIN Example

This is the readme for this project which is where I figured out how to connect to the rust-analyzer over STDIN for a neopolitan LSP

Notes

  • An example of how to connect to rust-analyzer from STDIN with JSON-RPC

  • This gets semantic tokens

  • The paths are hardcoded to "/Users/alan/Desktop/ratest"

  • A "Cargo.toml" file has to exist at "/Users/alan/Desktop/ratest/Cargo.toml" for the semantic tokens to work

  • Watch out for the escaping of the paths. I think I had some problems with that as well, but that was early so it may have been unrelated issue

  • The "output.log" shows an example run

  • There's a couple sleep timers in the mix. They're necessary for things to work properly. This was just a scratchpad test and they did the job. Something aimed at production would need a more robust solution

  • One thing to examine is the "augmentsSyntaxTokens" option which sounds like it reduced the number of tokens sent so they don't fight with other highlighters.

References