syntax_data: {"ast_node_type":"variable","tokens":[{"end":56,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if let ExprKind::Block { block } = expr.kind
context_before:         let mut adjust_span = |expr: &mut Expr<'tcx>| {
context_after:                 && let Some(last_expr) = self.thir[block].expr