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Visit Stmt span in MutVisitor::flat_map_stmt

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David Tolnay 2024-12-02 18:38:45 -08:00
parent a2eca35c15
commit a3cfe2fd08
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2 changed files with 8 additions and 14 deletions
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13
compiler/rustc_ast/src/mut_visit.rs
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@ -1789,20 +1789,21 @@ pub fn noop_filter_map_expr<T: MutVisitor>(vis: &mut T, mut e: P<Expr>) -> Optio
pub fn walk_flat_map_stmt<T: MutVisitor>(
vis: &mut T,
Stmt { kind, mut span, mut id }: Stmt,
Stmt { kind, span, mut id }: Stmt,
) -> SmallVec<[Stmt; 1]> {
vis.visit_id(&mut id);
let stmts: SmallVec<_> = walk_flat_map_stmt_kind(vis, kind)
let mut stmts: SmallVec<[Stmt; 1]> = walk_flat_map_stmt_kind(vis, kind)
.into_iter()
.map(|kind| Stmt { id, kind, span })
.collect();
if stmts.len() > 1 {
panic!(
match stmts.len() {
0 => {}
1 => vis.visit_span(&mut stmts[0].span),
2.. => panic!(
"cloning statement `NodeId`s is prohibited by default, \
the visitor should implement custom statement visiting"
);
),
}
vis.visit_span(&mut span);
stmts
}