dart-sdk/tests/language/lazy_static3_test.dart
hausner@google.com 0bbf6c5b16 Runtime support for evaluation of static field initializer expressions
Eliminates the generation of field initializer functions by the parser.
Adds a runtime call that creates a one-shot function to evaluate the
initializer of a static field. The runtime function gets called from
the implicit static getter function for the field.

R=srdjan@google.com, zra@google.com

Review URL: https://codereview.chromium.org//471283002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39387 260f80e4-7a28-3924-810f-c04153c831b5
2014-08-19 21:53:44 +00:00

59 lines
1.2 KiB
Dart

// Copyright (c) 2012, 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.
import "package:expect/expect.dart";
final x = foo();
var x2 = foo2();
var x3 = foo3();
var x4 = foo4();
var x5 = foo5();
final x6 = foo6();
var x7 = x7 + 1;
foo() { throw "interrupt initialization"; }
foo2() { x2 = 499; throw "interrupt initialization"; }
foo3() => x3 + 1;
foo4() {
x4 = 498;
x4 = x4 + 1;
return x4;
}
foo5() {
x5 = 498;
x5 = x5 + 1;
}
foo6() {
try {
return x5 + 1;
} catch (e) {
return 499;
}
}
fib(x) {
if (x is! int) return 0;
if (x < 2) return x;
return fib(x - 1) + fib(x - 2);
}
main() {
Expect.throws(() => fib(x), (e) => e == "interrupt initialization");
Expect.equals(null, x);
Expect.throws(() => fib(x2), (e) => e == "interrupt initialization");
Expect.equals(null, x2);
Expect.throws(() => fib(x3), (e) => e is CyclicInitializationError);
Expect.equals(null, x3);
Expect.equals(499, x4);
Expect.equals(null, x5);
Expect.equals(499, x6);
Expect.throws(() => fib(x7), (e) => e is CyclicInitializationError);
}