Hi! Author here. You could try but there are some fundamental limitations.
The biggest limitation is that we don't have access to the full type system of Rust. I don't think we can ever support registering generic types (e.g. you can register `Vec<u32>` but not `Vec<T>`) and you don't have access to traits. So it would work if you can reduce your API to concrete types.
Otherwise - apart from some missing features - you could probably write big chunks in Roto if you wanted to. You could also prototype things in Roto and then translate to Rust with some simplified types.
Also you'd have to accept that it gets compiled at runtime.
The biggest limitation is that we don't have access to the full type system of Rust. I don't think we can ever support registering generic types (e.g. you can register `Vec<u32>` but not `Vec<T>`) and you don't have access to traits. So it would work if you can reduce your API to concrete types.
Otherwise - apart from some missing features - you could probably write big chunks in Roto if you wanted to. You could also prototype things in Roto and then translate to Rust with some simplified types.
Also you'd have to accept that it gets compiled at runtime.