Best practices for AST design in Rust?

• molten

  2 52 1.8 Rust

  An LLVM compiler for an ML-like language (written in Rust)

I second looking at the rust compiler. It splits various AST elements into a struct and enum, where the enum is a 'Kind' (eg. Expr for struct which contains an ExprKind enum). That allows things like line numbers and other common data to be easily fetched from the struct and variant-specific values can be stored in the enum, which can be pattern matched. I did a similar thing in a compiler I made a while ago here https://github.com/transistorfet/molten/blob/main/src/analysis/hir.rs

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