is there a project or sample of a visitor pattern using pest

[pm100]

I have a working , but incomplete, project , that uses antlr4rust. It uses the visitor model - which I really like. Is it possible to do the same thing using pest. I see the pest_ast project, maybe I need to tackle using that first.

[tomtau]

Do you mean the visitor pattern?

I'm not sure off the top of my head, you can check out projects here if any of them used the visitor pattern: https://github.com/pest-parser/awesome-pest?tab=readme-ov-file#projects

Otherwise, as you mentioned pest-ast is a good start; once you have ast, you can define a visitor on it: https://rust-unofficial.github.io/patterns/patterns/behavioural/visitor.html (not pest-specific)

A side-note: if you need to handle operator precedence, you can check out Pratt Parser: https://pest.rs/book/precedence.html