issue1235.rs - mozsearch

Enable keyboard shortcuts

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);