| /* |
| * 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. |
| */ |
| /** |
| * @assertion Let d be the declaration of a variable v. If d is a local or |
| * instance variable, then the invocation of the implicit getter of v |
| * evaluates to the value stored in v. |
| * If d is a static or library variable then the implicit getter method of v |
| * executes as follows: |
| * - Non-constant variable declaration with initializer. If d is of one of the |
| * forms var v = e; , T v = e; , final v = e; , final T v = e; , static |
| * v = e; , static T v = e; , static final v = e; or static final T v = e; |
| * and no value has yet been stored into v then the initializer expression |
| * e is evaluated. If, during the evaluation of e, the getter for v is |
| * invoked, a CyclicInitializationError is thrown. If the evaluation |
| * succeeded yielding an object o, let r = o, otherwise let r = null. In |
| * any case, r is stored into v. The result of executing the getter is r. |
| * - Constant variable declaration. If d is of one of the forms const v = e; , |
| * const T v = e; , static const v = e; or static const T v = e; the result |
| * of the getter is the value of the compile time constant e. Note that a |
| * compile time constant cannot depend on itself, so no cyclic references |
| * can occur. Otherwise |
| * - Variable declaration without initializer. The result of executing the |
| * getter method is the value stored in v. |
| * @description Checks that if during the evaluation of e, the getter for v |
| * is invoked, a CyclicInitializationError is thrown. Also expects that |
| * after that the result of getter is [:null:] |
| * @author msyabro |
| * @reviewer iefremov |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| f(func) { |
| try { |
| throw 1; // caugth exceptions do not matter |
| } on int catch (e) { |
| func(); |
| } |
| } |
| |
| class C { |
| static var sVar = f(() => sVar); |
| static int sTyped = f(() => sTyped); |
| static final sFinal = f(() => sFinal); |
| static final int sFinalTyped = f(() => sFinalTyped); |
| } |
| |
| |
| main() { |
| Expect.throws(() => C.sVar, (e) => e is CyclicInitializationError); |
| Expect.equals(null, C.sVar); |
| |
| Expect.throws(() => C.sTyped, (e) => e is CyclicInitializationError); |
| Expect.equals(null, C.sTyped); |
| |
| Expect.throws(() => C.sFinal, (e) => e is CyclicInitializationError); |
| Expect.equals(null, C.sFinal); |
| |
| Expect.throws(() => C.sFinalTyped, (e) => e is CyclicInitializationError); |
| Expect.equals(null, C.sFinalTyped); |
| } |