syntax_data: {"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if let Block { expr: None, targeted_by_break: false, .. } = this.thir[block]
context_before:             ExprKind::Block { block }
context_after:                     && expr_ty.is_never() => {}