How do i parse something like #[myderive(Type, Type, Type)]

[Bleachfuel]

How do i parse something like #[myderive(Type, Type, Type)], where Type is something like a struct that implements FromMeta. I tried using #[darling(multiple)] but that doesnt seem to work.

[TedDriggs]

Did you look at darling::util::PathList?

[Bleachfuel]

ah no, thanks!

[Bleachfuel]

This is not quite what im looking for, Is there no darling::util::Meta? that contains a vec of Meta? so I can parse multiple kinds of Meta's?

[TedDriggs]

No, there is not. You can see that with the shape of syn::Meta; it is either a path, a name-expr pair, or a list of metas.

You might be able to use a field of type ExprArray, but it depends what you're trying to achieve.

[Bleachfuel]

yeah, it would be nice to have just a Vec. im trying to parse #[require(Require, Require)]. where Require can be either path or a metalist. Require also implements from_meta but I dont know how to parse it as a list with your crate!

[TedDriggs]

An arbitrary Vec is not and cannot be an option. If you provide actual examples of the desired input, I may be able to help you with a custom FromMeta impl

[Bleachfuel]

Let's say i want to parse #[require(Foo, Bar, Baz(a function))]. These would all be parsed as the same type, namely a struct with Path and a option to have a function inside of it. How would I be able to parse something like this with darling? Parsing it myself is trivial, but if I'm using darling it would be nice if this also could be a real type