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77 lines
1.4 KiB
Dart
77 lines
1.4 KiB
Dart
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// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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// Tests for closures sharing mutable bindings.
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var f;
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var g;
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setupPlain() {
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int j = 1000;
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// Two closures sharing variable 'j'; j initially is 1000.
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f = (int x) {
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var q = j;
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j = x;
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return q;
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};
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g = (int x) {
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var q = j;
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j = x;
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return q;
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};
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}
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setupLoop() {
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for (int i = 0; i < 2; i++) {
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int j = i * 1000; // The last stored closure has j initially 1000.
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// Two closures sharing variable 'j'.
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f = (int x) {
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var q = j;
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j = x;
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return q;
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};
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g = (int x) {
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var q = j;
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j = x;
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return q;
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};
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}
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}
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setupNestedLoop() {
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for (int outer = 0; outer < 2; outer++) {
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int j = outer * 1000;
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for (int i = 0; i < 2; i++) {
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// Two closures sharing variable 'j' in a loop at different nesting.
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f = (int x) {
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var q = j;
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j = x;
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return q;
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};
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g = (int x) {
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var q = j;
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j = x;
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return q;
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};
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}
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}
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}
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test(setup) {
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setup();
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Expect.equals(1000, f(100));
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Expect.equals(100, f(200));
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Expect.equals(200, f(300));
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Expect.equals(300, g(400));
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Expect.equals(400, g(500));
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}
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main() {
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test(setupPlain);
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test(setupLoop);
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test(setupNestedLoop);
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}
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