I am working on a port of ungrammar to ocaml. It is a DSL for specifying concrete syntax trees. Ungrammar is just a parser that produces “grammars” which are lists of nodes and tokens, whatever those are. The original setup is like this: Running cargo xtask codegen first parses a rust grammar and …

You’re probably looking for ppxlib’s Ast_builder APIs to build an ast; the documentation is too sparse but it gets the job done. You want generated code to be part of your codebase as well, so you could write an executable that generates the ast and prints it with ppxlib’s Pprintast to stdout or a f…

I tried doing something similar earlier this year - I tried to capture my own understanding of Ast_builder here if you find it helpful

How can I use dune and ppxlib to generate library code?

Learning

kentookura November 17, 2025, 9:53am 2

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How can I use dune and ppxlib to generate library code?

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