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Diffstat (limited to 'syn/codegen/README.md')
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diff --git a/syn/codegen/README.md b/syn/codegen/README.md new file mode 100644 index 0000000..df46bd2 --- /dev/null +++ b/syn/codegen/README.md @@ -0,0 +1,12 @@ +# syn_codegen + +This is an internal (not published on crates.io) crate which is used to generate +the files in the `gen/` directory of `syn`. It is used to ensure that the +implementations for `Fold`, `Visit`, and `VisitMut` remain in sync with the +actual AST. + +To run this program, run `cargo run` in this directory, and the `gen/` folder +will be re-generated. + +This program is slow, and is therefore not run when building `syn` as part of +the build script to save on compile time. |