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--generate-stub for Rust #1347
Description
Does anything speak against adding a --generate-stub flag for Rust, like the one for CSharp?
> wit-bindgen csharp --help | grep stub
--generate-stub
Whether or not to generate a stub class for exported functionsIf not, I may consider contributing a PR for this.
Activity
alexcrichton commentedon Aug 12, 2025
Does the
--stubsflag work for you?EugenDueck commentedon Aug 12, 2025
The problem with
--stubsis that the stub gets embedded within the bindings file. What I'm looking for is something like a separate lib.rs file containing just the stub. A file that can be manually edited, and that won't get overwritten when re-runningwit-bindgen(unless perhaps the--generate-stubflag is set again)EugenDueck commentedon Aug 12, 2025
However, as the
rustcommand already has the--stubsflag, adding another--generate-stubsdoesn't feel ideal. Perhaps adding an optional value to--stubsthat can be eitherembeddedorseparate, defaulting to the former if we want to maintain backwards compatibility?EugenDueck commentedon Aug 13, 2025
The reason I wanted this no longer applies, as I already have a WIT generator and decided to just add a flag to also generate the stubs.
However, if there’s interest in such a feature for wit-bindgen, I may take a stab at it.
alexcrichton commentedon Aug 13, 2025
Ah ok makes sense, and yeah I think it'd be reasonable to add support for this and generating into a separate file
EugenDueck commentedon Aug 15, 2025
I've created a draft PR with a couple of discussion points: #1354