WithOriginal and UsesTypeParams/UsesLifetimes

[nkovacs]

I had a data that looked like this:

data: ast::Data<darling::util::Ignored, MyField>,

and I implemented UsesTypeParams and UsesLifetimes for MyField, so I could use data.uses_type_params_cloned and everything was great.

Then I needed access to the original syn::Field, so I found WithOriginal, and changed my data to this:

data: ast::Data<darling::util::Ignored, WithOriginal<MyField, syn::Field>>,

but this broke data.uses_type_params_cloned (and uses_lifetimes_cloned) because WithOriginal does not implement these two traits.

Wouldn't it make sense for WithOriginal to forward these traits to the parsed type?

[TedDriggs]

Yes, that sounds reasonable to me.