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Diffstat (limited to 'crates/mbe/src/expander/matcher.rs')
| -rw-r--r-- | crates/mbe/src/expander/matcher.rs | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/crates/mbe/src/expander/matcher.rs b/crates/mbe/src/expander/matcher.rs index 0ab5c8c3c9..474826079d 100644 --- a/crates/mbe/src/expander/matcher.rs +++ b/crates/mbe/src/expander/matcher.rs @@ -567,7 +567,9 @@ fn match_loop_inner<'t>( item.is_error = true; error_items.push(item); } - OpDelimited::Op(Op::Ignore { .. } | Op::Index { .. }) => {} + OpDelimited::Op(Op::Ignore { .. } | Op::Index { .. } | Op::Count { .. }) => { + stdx::never!("metavariable expression in lhs found"); + } OpDelimited::Open => { if matches!(src.peek_n(0), Some(tt::TokenTree::Subtree(..))) { item.dot.next(); @@ -811,7 +813,9 @@ fn collect_vars(collector_fun: &mut impl FnMut(SmolStr), pattern: &MetaTemplate) Op::Var { name, .. } => collector_fun(name.clone()), Op::Subtree { tokens, .. } => collect_vars(collector_fun, tokens), Op::Repeat { tokens, .. } => collect_vars(collector_fun, tokens), - Op::Ignore { .. } | Op::Index { .. } | Op::Literal(_) | Op::Ident(_) | Op::Punct(_) => { + Op::Literal(_) | Op::Ident(_) | Op::Punct(_) => {} + Op::Ignore { .. } | Op::Index { .. } | Op::Count { .. } => { + stdx::never!("metavariable expression in lhs found"); } } } |