blob: ef868810139515e170fb20854f9742b706b922c6 [file] [log] [blame]
* 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.
* @note NNBD Spec now reads: If a variable or field is read from during the
* process of evaluating its own initializer expression, and no write to the
* variable has occurred, the read is treated as a first read and the
* nitializer expression is evaluated again.
* A toplevel or static variable with an initializer is evaluated as if it was
* marked [late]. Note that this is a change from pre-NNBD semantics in that:
* Reading the variable during initializer evaluation is no longer checked for,
* and does not cause an error.
* @description Checks that CyclicInitializationError is not thrown when getter
* is referenced during evaluation of initialization expression.
* @author kaigorodov
* @Issue 42470
* @issue 42642
import "../../../Utils/expect.dart";
int count = 0;
int f() {
return count++ < 20 ? C.sTyped : count;
class C {
static int sTyped = f();
main() {
Expect.equals (21, C.sTyped);