blob: 5947b5752cd5ded822b020877fe32e4c82f28aea [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.
* @description Checks the result of the getter and that the initializer
* expression is evaluated only once.
* @author msyabro
import "../../../Utils/expect.dart";
String log = "";
writeLog(int i) {
log = "${log}${i}";
return i;
class C {
static var a = writeLog(1);
static int b = writeLog(2);
static final c = writeLog(3);
static final int d = writeLog(4);
main() {
Expect.equals(4, C.d);
Expect.equals(1, C.a);
Expect.equals(2, C.b);
Expect.equals(3, C.c);
Expect.equals("4123", log, "Lazy static getters execution was wrong!");