How to replicate inheritance (kinda) in Rust?

• rust

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Maybe you can look into splitting your Node trait into NodeClone for copy() and NodeEval for eval()? If you are on nightly you can even use trait_alias to get back trait Node = NodeClone + NodeEval;.

• syn

  19 2,675 9.6 Rust

  Parser for Rust source code

It looks to me like you are trying to make a syntax tree generic over arities. I suggest you take a look at the Expr enum in syn, its variant structs, and the ast_enum_of_structs_impl macro, which is a macro that implements a trait over different Expr variants with different fields.

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