Robert Nystrom
5a27ea139e
Change-Id: Idbf338099414c78e1bb6ee2852c41495fb53f70b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151471 Auto-Submit: Bob Nystrom <rnystrom@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com> Commit-Queue: Leaf Petersen <leafp@google.com> Reviewed-by: Leaf Petersen <leafp@google.com>
104 lines
2.2 KiB
Dart
104 lines
2.2 KiB
Dart
// 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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// Test switch statement using labels.
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import "package:expect/expect.dart";
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class Switcher {
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Switcher() {}
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say1(sound) {
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var x = 0;
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switch (sound) {
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MOO:
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case "moo":
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x = 100;
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break;
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case "woof":
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x = 200;
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continue MOO;
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default:
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x = 300;
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break;
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}
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return x;
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}
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say2(sound) {
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var x = 0;
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switch (sound) {
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WOOF:
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case "woof":
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x = 200;
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break;
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case "moo":
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x = 100;
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continue WOOF;
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default:
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x = 300;
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break;
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}
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return x;
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}
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// forward label to outer switch
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say3(animal, sound) {
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var x = 0;
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switch (animal) {
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case "cow":
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switch (sound) {
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case "moo":
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x = 100;
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break;
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case "muh":
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x = 200;
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break;
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default:
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continue NIX_UNDERSTAND;
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}
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break;
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case "dog":
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if (sound == "woof") {
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x = 300;
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} else {
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continue NIX_UNDERSTAND;
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}
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break;
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NIX_UNDERSTAND:
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case "unicorn":
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x = 400;
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break;
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default:
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x = 500;
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break;
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}
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return x;
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}
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}
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class SwitchLabelTest {
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static testMain() {
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Switcher s = new Switcher();
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Expect.equals(100, s.say1("moo"));
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Expect.equals(100, s.say1("woof"));
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Expect.equals(300, s.say1("cockadoodledoo"));
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Expect.equals(200, s.say2("moo"));
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Expect.equals(200, s.say2("woof"));
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Expect.equals(300, s.say2("")); // Dead unicorn says nothing.
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Expect.equals(100, s.say3("cow", "moo"));
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Expect.equals(200, s.say3("cow", "muh"));
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Expect.equals(400, s.say3("cow", "boeh")); // Don't ask.
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Expect.equals(300, s.say3("dog", "woof"));
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Expect.equals(400, s.say3("dog", "boj")); // Ĉu vi parolas Esperanton?
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Expect.equals(400, s.say3("unicorn", "")); // Still dead.
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Expect.equals(500, s.say3("angry bird", "whoooo"));
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}
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}
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main() {
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SwitchLabelTest.testMain();
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}
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