blob: 51fcbdce73f28b40129d4dafd567e9d40f779935 [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!");