Pass FnPtr params as ffi.Callback

RainwayApp / node-clangffi

Generate Typescript FFI bindings for C/C++ libraries using libclang and ffi-napi.

MIT License

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Pass FnPtr params as ffi.Callback #29

Open bengreenier opened 2 years ago

bengreenier commented 2 years ago

Sometimes we may wish to use ffi.Callback to represent a function pointer that's being passed to a native function as a parameter. Today, these types get mapped as ffi.Function which isn't compatible. We should consider how to support a typed solution that allows either:

Select ffi.Function or ffi.Callback via clangffi flags or other user config (ideally selection occurs at a function level)
Provide a typing that allows for either, and let the caller decide

bengreenier commented 2 years ago

as a workaround today, one may pass a ffi.Callback() anywhere a ffi.Function() is taken as a param, but they must cast it to any.