| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart = 2.9 |
| |
| /// @assertion Additive expressions invoke the addition operators on objects. |
| /// additiveExpression: |
| /// multiplicativeExpression (additiveOperator multiplicativeExpression)* | |
| /// super (additiveOperator multiplicativeExpression)+ |
| /// ; |
| /// additiveOperator: |
| /// '+' | |
| /// '-' |
| /// ; |
| /// An additive expression is either a multiplicative expression, or an |
| /// invocation of an additive operator on either super or an expression e1, with |
| /// argument e2. |
| /// @description Checks that an additive expression of the form |
| /// multiplicativeExpression ('+' multiplicativeExpression)* |
| /// must have at least two operands. |
| /// Note that there is no unary plus operator in dart. |
| /// @author msyabro |
| |
| |
| main() { |
| var x=1; |
| try { |
| + x; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } catch (e) {} |
| } |