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use proc_macro2::{Delimiter, Group};
use quote::quote;
#[test]
fn main() {
// Okay. Rustc allows top-level `static` with no value syntactically, but
// not semantically. Syn parses as Item::Verbatim.
let tokens = quote! {
pub static FOO: usize;
pub static BAR: usize;
};
let file = syn::parse2::<syn::File>(tokens).unwrap();
println!("{:#?}", file);
// Okay.
let inner = Group::new(
Delimiter::None,
quote!(static FOO: usize = 0; pub static BAR: usize = 0),
);
let tokens = quote!(pub #inner;);
let file = syn::parse2::<syn::File>(tokens).unwrap();
println!("{:#?}", file);
// Formerly parser crash.
let inner = Group::new(
Delimiter::None,
quote!(static FOO: usize; pub static BAR: usize),
);
let tokens = quote!(pub #inner;);
let file = syn::parse2::<syn::File>(tokens).unwrap();
println!("{:#?}", file);
}