paulberry@google.com
d7c763003d
This re-applies commit 43626, which was reverted in 43628. What happened: I accidentally tested r43626 against a work-in-progress build of the Java-based dartanalyzer that contained r43655, so I failed to update the status files properly. This resulted in a build failure, which was addressed by reverting r43626. Now that r43655 has landed, the build failure should not occur. R=hausner@google.com Review URL: https://codereview.chromium.org//910243002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@43666 260f80e4-7a28-3924-810f-c04153c831b5
86 lines
1.8 KiB
Dart
86 lines
1.8 KiB
Dart
// Copyright (c) 2015, 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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// Simple test program for sync* generator functions.
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// VMOptions=--optimization_counter_threshold=10
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import "package:expect/expect.dart";
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sum10() sync* {
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var s = 0;
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for (var k = 1; k <= 10; k++) {
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s += k;
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yield s;
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}
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}
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class Range {
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int start, end;
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Range(this.start, this.end);
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elements() sync* {
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var e = start;
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while (e <= end) yield e++;
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}
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get yield sync* { // yield is a legal member name here.
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var e = start;
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while (e <= end) yield e++;
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}
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}
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get sync sync* { // sync is a legal identifier.
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yield "sync";
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}
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einsZwei() sync* {
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yield 1;
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yield* [2, 3];
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yield* [];
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yield 5;
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yield [6];
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}
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dreiVier() sync* {
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// Throws type error: yielded object is not an iterable.
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yield* 3; /// 01: static type warning
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}
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main() {
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for (int i = 0; i < 10; i++) {
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var sums = sum10();
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print(sums);
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Expect.isTrue(sums is Iterable);
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Expect.equals(10, sums.length);
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Expect.equals(1, sums.first);
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Expect.equals(55, sums.last);
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var q = "";
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for (var n in sums.take(3)) {
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q += "$n ";
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}
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Expect.equals("1 3 6 ", q);
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var r = new Range(10, 12);
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var elems1 = r.elements();
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print(elems1);
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var elems2 = r.yield;
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print(elems2);
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// Walk the elements of each iterable and compare them.
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var i = elems1.iterator;
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Expect.isTrue(i is Iterator);
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elems2.forEach((e) {
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Expect.isTrue(i.moveNext());
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Expect.equals(e, i.current);
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});
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print(sync);
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Expect.equals("sync", sync.single);
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print(einsZwei());
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Expect.equals("(1, 2, 3, 5, [6])", einsZwei().toString());
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Expect.throws(() => dreiVier().toString()); /// 01: continued
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}
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}
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