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update CONTRIBUTING.md

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Christian Poveda 2022-09-26 10:55:05 -05:00
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CONTRIBUTING.md
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@ -326,9 +326,11 @@ generated Rust code are implemented using the [`syn`](https://docs.rs/syn) crate
If a new option can be implemented using the `syn` crate it should be added to
the `codegen::postprocessing` module by following these steps:
- Introduce a new `struct` with no fields.
- Implement the `PostProcessing` trait for the `struct`.
- Add the `struct` to the `decl_postprocessing` macro invocation.
- Introduce a new field to `BindgenOptions` for the option.
- Write a free function inside `codegen::postprocessing` implementing the
option. This function with the same name of the `BindgenOptions` field.
- Add a new value to the `codegen::postprocessing::PASSES` for the option using
the `pass!` macro.
## Pull Requests and Code Reviews