Macro synstructure::decl_derive

macro_rules! decl_derive {
    ([$derives:ident $($derive_t:tt)*] => $inner:path) => { ... };
}

The decl_derive! macro declares a custom derive wrapper. It will parse the incoming TokenStream into a synstructure::Structure object, and pass it into the inner function.

Your inner function should have the following type:

fn derive(input: synstructure::Structure) -> proc_macro2::TokenStream {
    unimplemented!()
}

Usage

Without Attributes

fn derive_interesting(_input: synstructure::Structure) -> proc_macro2::TokenStream {
    quote! { ... }
}

decl_derive!([Interesting] => derive_interesting);

With Attributes

fn derive_interesting(_input: synstructure::Structure) -> proc_macro2::TokenStream {
    quote! { ... }
}

decl_derive!([Interesting, attributes(interesting_ignore)] => derive_interesting);