CharStream macros

[redradist]

@redradist

#[proc_macro_keyword] pub fn javascript(attr: TokenStream, item: CharStream) -> impl Iterator { // ... }

Hmm ...

It could make sense with following design:

#[proc_macro_parser]
pub fn javascript(item: CharStream) -> impl Iterator {
    // ...
}

and then to use it like this:

#[foreign_lang(javascript, path="do_something.js")]
mod do_something;