What is the state of the art for creating domain-specific languages (DSLs) with Rust?

1. pest

   1 47 5,002 7.1 Rust

   The Elegant Parser (by pest-parser)

   

   I second pest.rs. Using it is fairly intuitive and there's also a live playground on their website which is great for quickly developing and testing your AST (abstract syntax tree) parser for whatever language you're implementing.

2. Stream

   getstream.io featured

   Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

   

3. egg

   2 25 1,527 6.3 Rust

   egg is a flexible, high-performance e-graph library (by egraphs-good)

   

   For semantic analyzers, check out egg and egglog. They're custom data structures for representing compiler rewrite rules in a non-destructive way.

4. egglog

   3 5 556 9.8 Rust

   egraphs + datalog!

   

   For semantic analyzers, check out egg and egglog. They're custom data structures for representing compiler rewrite rules in a non-destructive way.

5. nom

   4 92 10,006 8.1 Rust

   Rust parser combinator framework

   

   As much as I love nom as well as other parser combinator libraries, regex-based parsers, BNF/EBNF-based parsers, etc. I always end up going back to plain old text-based char-by-char scanners.

6. lalrpop

   5 25 3,288 8.3 Rust

   LR(1) parser generator for Rust

   

   lalrpop

7. hyperscript

   6 25 2,673 0.0 HTML

   Create HyperText with JavaScript.

   

   In fairness, there's a lot of overlap between embedded DSLs and libraries — a library like Hyperscript for generating HTML in JavaScript is in many ways a DSL, but it's also just a bunch of functions that are easy to put together in a particular way. But this is often good enough!

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