logos VS foundation.rust-lang.org

This is mighty impressive! I've been trying to get some motivation for the mythical rewrite of the proc macro in Logos, and this might just do it for me :D. I'll have a proper look later today and see if any of your findings have something that can be generalized. Also really surprised to see aarch64 doing better than x86_64 since the latter is what I've been optimizing for!

Rust is a very nice langage for implementing compilers, and has a nice ecosystem for it (logos, rust-peg, lalrpop, astmaker -- this one is mine --, etc...).

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.

Thanks! For compile times you might find the CLI version that Andrew Hickman contributed useful, it's undocumented still mostly I fear but shouldn't be hard to use, see original PR: https://github.com/maciejhirsz/logos/pull/248

For my lexer generation purposes, I tend to use https://github.com/maciejhirsz/logos, as it not only generates an easy to use lazy lexer, but the result is also exceptionally fast!

Hi, I'm using rowan to create a parser and want to print more useful error messages with position in the text/file. I'm using logos (https://crates.io/crates/logos) to generate the lexer. Is there a way to get the starting and ending positions of a SyntaxToken? If not I thought of adding my own wrapper struct around the SyntaxTokens.

Is there a way for a lexer created with the logos crate (https://crates.io/crates/logos) to get the starting and ending positions for the tokens?

I wouldn't recommend Logos at this point. This recent bug is quite nasty and seems easy to hit, and the maintainer is unresponsive. Last commit was half a year ago. At this point I consider Logos abandonware, though it would be great if its development continued, or if it were forked.

logos uses "ridiculously fast".

Through the Fast Forward program, we give free services and support to open source projects and the nonprofits that support them. We support many of the world’s top programming languages (like Python, Rust, Ruby, and the wonderful Scratch), foundational technologies (cURL, the Linux kernel, Kubernetes, OpenStreetMap), and projects that make the internet better and more fun for everyone (Inkscape, Mastodon, Electronic Frontier Foundation, Terms of Service; Didn’t Read).

This is why some of the bigger programming languages have a consortium behind them, dedicated to maintaining the language and making decisions for its continued improvement. When you look at the logos at the bottom of the Rust Foundation page, you can see some pretty big names.

The Rust foundation, which is a nonprofit general (delaware) corporation with bylaws, employees, a normal legal existence. It owns the trademarks and domain names, acts as a legal and administrative point of contact when one is needed, and has I think operational and funding responsibility for infrastructure (crates.io, CI, etc.) The foundation has members which are almost all corporate sponsors who donate money (and sometimes people) to further its mandate. There's a fairly broad set of companies involved here: Microsoft, Google, Amazon, Meta, Huawei, etc. etc.

When you say enterprise, who do you mean? Rust is absolutely being pushed by faang et al for example. Just look at the bottom of the Rust foundation page[0]. You do not see this support for things like Nim or Julia[1].

[0] https://foundation.rust-lang.org/

The Rust language is supported by the Rust Foundation, more details on that website. Financial donors to the Rust Foundation are about 30-40 companies currently, the bigger ones include Mozilla, Google, Microsoft, AWS, and Meta

> https://foundation.rust-lang.org/ 15,000

With all due respect, they don't need this money. Rust is a great project, and deserving, but they already have plenty of sponsors.

I would have rather seen 150 x $100 go to smaller projects. So much great software is being written, by people who are barely scraping by, and even $100 could be the motivation for someone to finish something widely useful.

So, let's clarify a couple things first about how the Rust and Cargo crates work. First off, there is no single company or entity who's the sole contributor to the core Rust tooling. Rust is an open source project to which anyone can view the codebase and contribute (though there's a select set of people who are responsible for approving changes to it and managing releases). It's worth noting this doesn't mean there isn't an organization responsible for the project however. The Rust Foundation are a non-profit who manages the core repositories and tooling, and is also responsible for setting high level goals for the language.

I don't think it is the same as Java. There is no single company owning Rust. Several big companies are investing in rust foundation (https://foundation.rust-lang.org/) including Google in particular which had quite a story regarding Java.

Recently, several big techs like Google, Microsoft, Mozilla and Amazon jointly launched a non-profit organization to help the language maintain itself by giving full support to the maintainers who lead and develop the project. Here at Vaultree we use Rust in our product and services, as we need to deliver data with reliability and agility to our customers, as we are in a business line where any error or inaccuracy can be costly, the adoption of Rust was a great fit for us.