syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"&ExprKind::Binary"}]}
source_snippet:         &ExprKind::Binary { op, lhs, rhs } if check_binop(op) => {
context_before:         }
context_after:             let lhs_ty = body.exprs[lhs].ty;