Rust Target

[Stuart Dootson]

I'm interested in using Antlr to generate parsers to use from Rust. I could possibly use the C++ target (although I haven't used it much - most of my Antlr experience is with Antlr 2 and its C++ target - since around 2003!), but a Rust target would be a) likely easier to integrate, and b) a 'fun' learning experience.

So - are there any documented pointers about what needs to be in place for a new target. Obviously there's codegen from Antlr (using StringTemplate, I presume?) and then the runtime... And I guess the interface to Antlr through the generator places requirements/constraints on the generated code (and thus the supporting runtime)?

Any suggestions, pointers etc are welcome...

Stuart Dootson

[Eric Vergnaud]

Here is the path I followed to create the JavaScript and Python runtimes.

I started by implementing (in Java) a JUnit test integration for the Rust runtime (see runtime-testsuite).

This helped me start with simple Lexer tests, and gradually grow in complexity.

Then I gradually migrated the Java runtime to Python 3 (the types were very helpful).

I didn't have much choice then, but today you can pick any existing runtime as a source to migrate to Rust.

From what I can see at a glance on the Rust web site, JavaScript could be the best one.

[Stuart Dootson]

Thanks for that - sounds like a good approach

-- 
Stuart Dootson

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[Rutger Rauws]

Hi Stuart, did you make any progress on a Rust target? Otherwise I might look into it.