{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"self.init_from_succ(ln,"}]}
                    self.init_from_succ(ln, succ);
                    let ln = self.live_node(expr.hir_id, expr.span);
                    for (op, _op_sp) in asm.operands.iter().rev() {