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Diffstat (limited to 'crates/proc-macro-srv/src/server/token_stream.rs')
| -rw-r--r-- | crates/proc-macro-srv/src/server/token_stream.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/crates/proc-macro-srv/src/server/token_stream.rs b/crates/proc-macro-srv/src/server/token_stream.rs index 408db60e87..b1a448427c 100644 --- a/crates/proc-macro-srv/src/server/token_stream.rs +++ b/crates/proc-macro-srv/src/server/token_stream.rs @@ -101,6 +101,8 @@ pub(super) struct TokenStreamBuilder<S> { /// pub(super)lic implementation details for the `TokenStream` type, such as iterators. pub(super) mod token_stream { + use core::fmt; + use super::{TokenStream, TokenTree}; /// An iterator over `TokenStream`'s `TokenTree`s. @@ -122,7 +124,7 @@ pub(super) mod token_stream { /// /// NOTE: some errors may cause panics instead of returning `LexError`. We reserve the right to /// change these errors into `LexError`s later. - impl<S: tt::Span> TokenStream<S> { + impl<S: Copy + fmt::Debug> TokenStream<S> { pub(crate) fn from_str(src: &str, call_site: S) -> Result<TokenStream<S>, String> { let subtree = mbe::parse_to_token_tree_static_span(call_site, src).ok_or("lexing error")?; |