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Ensure all quote! tokens have the default Span #51

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Ensure all quote! tokens have the default Span #51

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19 changes: 18 additions & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -72,7 +72,24 @@ pub mod __rt {

pub fn parse(tokens: &mut ::Tokens, s: &str) {
let s: TokenStream = s.parse().expect("invalid token stream");
tokens.append_all(s.into_iter());

// Reset all tokens in this iterator back to the default span to ensure
// they don't get "bogus" spans through `parse`. It was found that
// otherwise this doesn't actually work:
//
// quote! {
// mod foo {
// use super::*;
// }
// }
//
// That spits out a weird error about "there are too may initial
// `super`s". No idea why that's spit out, but ensuring that the default
// span comes out seems to fix it!
tokens.append_all(s.into_iter().map(|mut t| {
t.span = Default::default();
t
}));
}

pub fn append_kind(tokens: &mut ::Tokens, kind: TokenNode) {
Expand Down