syntax_data: {"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"StatementKind::Assign(box"}]}
source_snippet:                     StatementKind::Assign(box (ref place, ref rvalue)) => {
context_before:                     // Retag after assignments of reference type.
context_after:                         let add_retag = match rvalue {