tao
chumsky
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tao | chumsky | |
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11 | 54 | |
1,068 | 3,327 | |
- | - | |
7.7 | 8.8 | |
7 months ago | 3 days ago | |
Rust | Rust | |
Mozilla Public License 2.0 | MIT License |
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tao
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What backwards-incompatible changes would you make in a hypothetical Rust 2.0?
If you want some prior work on this, I've implemented effect-objects-as-return-values in my own language Tao, using uniqueness types. There's still work to be done, but I think it's sufficient as a proof of concept that this approach is viable without type soup.
- Why does Rust have parameters on impl?
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What are Rust’s biggest weaknesses?
I've personally found through my experiments working on my language Tao that having effects be a property of the return value and not the function itself is very useful and opens up a lot of doors, like iterators that generate effectful values and more precise control over when side effects occur and in what context.
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Hey Rustaceans! Got a question? Ask here! (29/2022)!
If you’d like to see some examples of great error messages written by a language with a parser combinator, I recommend you check out tao, which is parsed via chumsky, and provides rust-like error messages with the help of ariadne! I have been fiddling with writing my own language for a while now, and after trying out the alternatives, I found Chumsky to be great to work with, and can not recommend it enough. There are also great examples that you can find in the repo as well!
- Tao: A statically-typed functional language
- Tao: 一种静态类型的函数式语言 (Tao: A statically-typed functional language)
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Hacker News top posts: Jul 5, 2022
Tao: A statically-typed functional language\ (0 comments)
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Write your own programming language in an hour with Chumsky
I've been developing both throughout the development of Tao, my own hobby language. It's since developed quite an extensive syntax (see here for an example: https://github.com/zesterer/tao/blob/master/examples/99.tao), so you can count it as evidence that chumsky scales to complex grammars: https://github.com/zesterer/tao
chumsky
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Lezer: A Parsing System for CodeMirror, Inspired by Tree-Sitter
I attempted to use this but was disheartened but the fact that it doesn't statically type node names. Tree Sitter doesn't either but it has much more of an excuse given that it targets C.
https://github.com/lezer-parser/lezer/issues/8
The dev seems mildly hostile to outside involvement too, so I moved on. These days I use Chumsky which is Rust rather than Typescript, but also way more awesome, if you can deal with the often incomprehensible compilation errors at least!
https://github.com/zesterer/chumsky
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nom > regex
there’s also chumsky: https://github.com/zesterer/chumsky
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Writing an Equation Solver
We are using technique called parser combinator. And we are using a library chumsky to write parser combinators.
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loxcraft: a compiler, language server, and online playground for the Lox programming language
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.
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Examples of function-based parsers in chumsky? Examples of unit tests?
The examples that come with chumsky and the chumsky tutorial and guide all define their parsers using closures.
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Flamingo - A start: the syntax, a soon-to-be-built keyword-less lang with flavoured code blocks. Seeking help and advice please :)
Parser: https://crates.io/crates/chumsky
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pep-508 v0.2.1 - Zero copy Python dependency parser written with chumsky
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.
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winnow = toml_edit + combine + nom
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!
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Rust implementation of Python dependency parser for PEP 508
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).
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Question about lexer and parser generators in Rust
Checkout https://github.com/zesterer/chumsky or https://github.com/rust-bakery/nom
What are some alternatives?
statix - lints and suggestions for the nix programming language
nom - Rust parser combinator framework
tauri - Build smaller, faster, and more secure desktop applications with a web frontend.
pest - The Elegant Parser
pom - PEG parser combinators using operator overloading without macros.
mlton - The MLton repository
lalrpop - LR(1) parser generator for Rust
owo - Export your OneNote note collection to Obsidian, Logseq, Org Mode or any other plain text note-taking app! [Moved to: https://github.com/alopezrivera/OneNoteExporter]
instaparse
bril - an educational compiler intermediate representation
combine - A parser combinator library for Rust