tower-lsp VS chumsky

I realize this might not be for everyone, but I'm writing it in Rust using Lib-ruby-parser and tower-lsp: two existing libraries that handle a bunch of the heavy lifting for me. I'm more productive in Rust than with Ruby at this point, despite doing Ruby full time for 15 years, plus I really really don't want to have to deal with a slow LSP--that was the whome impetus for this project. I started in the spring, made a bunch of headway, then backtracked to redo the internals to make it easier to handle monkeypatching, overriding/redefining of methods, etc. across your project.

https://github.com/ebkalderon/tower-lsp is a generalized LSP implementation in a lower-level language (Rust) so you may get a better idea by reading through that repo. It seems that the server opens a TCP socket that the client later connects to, but I'm not really sure.

A LSP is just an api implemented to Microsoft's LSP spec. You can implement that API however you wish but something like tower-lsp can do a lot of the heavy lifting for you.

Mine all use [tower-lsp](https://github.com/ebkalderon/tower-lsp/) for the LSP protocol stuff, and then either [Tree-sitter](https://github.com/tree-sitter/tree-sitter) or [Nom](https://github.com/Geal/nom). If I do another I'll probably try [Chumsky](https://github.com/zesterer/chumsky) which combines some of the advantages of both.

rust-langdev has a lot of libraries for building compilers in Rust. Perhaps you could use these to make your implementation easier, and revisit it later if you want to build things from scratch. I'd suggest logos for lexing, LALRPOP / chumsky for parsing, and rust-gc for garbage collection.

The examples that come with chumsky and the chumsky tutorial and guide all define their parsers using closures.

chumsky's zero-copy rewrite has reached its first alpha release, and I have migrated my pep-508 parser to it, as suggested in my last announcement.

On my side, nom is still advancing well and a new major version is in preparation, with some interesting work a new GAT based design inspired from the awesome work on chumsky, that promises to bring great performance with complex error types. 2023 will be fun for parser libraries!

I am using chumsky because I like the API, but it doesn't support zero copy at the moment. Although efficiency is good to have, it is not my primary good. This will probably get supported once chumsky implements support for it (see upstream issue).

Checkout https://github.com/zesterer/chumsky or https://github.com/rust-bakery/nom

Getting the basics of this project done was surprisingly easy thanks to chumsky, which I'm sure most people know about by now, and a little-known but quite ergonomic crate for handling system-wide hotkeys on Windows called windows-hotkeys.

BTW: The sister project https://github.com/zesterer/chumsky/ pre-implement this with a relatively easy interface. But doing it manually is totally doable and something I'm working on: https://github.com/Tablam/TablaM/tree/master/src/parser

I've started writing my own language by trying to add static typing to NanoRust, but that's obviously a ton of work.