{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"Rvalue::NullaryOp(op,"}]}
            Rvalue::NullaryOp(op, ty) => Value::NullaryOp(op, ty),
            }
            Rvalue::Aggregate(..) => return self.simplify_aggregate(lhs, rvalue, location),