syntax_data: {"ast_node_type":"variable","tokens":[{"end":65,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let StatementKind::Assign(box (lhs, _)) = &stmt.kind {
context_before:     fn visit_statement(&mut self, stmt: &Statement<'tcx>, loc: Location) {
context_after:             // Check for assignment to fields of a constant