Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/mbe/src/expander.rs')
| -rw-r--r-- | crates/mbe/src/expander.rs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/crates/mbe/src/expander.rs b/crates/mbe/src/expander.rs index 100ec6bfb9..7537dc3226 100644 --- a/crates/mbe/src/expander.rs +++ b/crates/mbe/src/expander.rs @@ -8,7 +8,7 @@ mod transcriber; use rustc_hash::FxHashMap; use syntax::SmolStr; -use crate::{parser::MetaVarKind, ExpandError, ExpandResult}; +use crate::{parser::MetaVarKind, tt, ExpandError, ExpandResult}; pub(crate) fn expand_rules( rules: &[crate::Rule], @@ -45,7 +45,10 @@ pub(crate) fn expand_rules( transcriber::transcribe(&rule.rhs, &match_.bindings); ExpandResult { value, err: match_.err.or(transcribe_err) } } else { - ExpandResult::only_err(ExpandError::NoMatchingRule) + ExpandResult::with_err( + tt::Subtree { delimiter: tt::Delimiter::unspecified(), token_trees: vec![] }, + ExpandError::NoMatchingRule, + ) } } |