blob: dd7cb887d542497254e19f4842b82979fcd18f05 [file] [log] [blame]
/*
* Copyright (c) 2016, 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 Execution of a statement s of the form yield e; proceeds as
* follows:
* First, the expression e is evaluated to an object o. If the enclosing
* function m is marked async* and the stream u associated with m has been
* paused, then execution of m is suspended until u is resumed or canceled.
* Next, o is added to the iterable or stream associated with the immediately
* enclosing function.
* ...
* If the enclosing function m is marked sync* then:
* - Execution of the function m immediately enclosing s is suspended until
* the nullary method moveNext() is invoked upon the iterator used to initiate
* the current invocation of m.
* - The current call to moveNext() returns true.
*
* @description Check that execution of the function m immediately enclosing
* s is suspended until the nullary method moveNext() is invoked upon the
* iterator used to initiate the current invocation of m
*
* @author a.semenov@unipro.ru
*/
import '../../../../Utils/expect.dart';
Iterable<int> generator(List log) sync* {
int code = 'a'.codeUnitAt(0);
for (int i = 0; i < 3; i++) {
yield i;
String s = new String.fromCharCode(code + i);
log.add(s);
}
}
main() {
List log = [];
Iterable<int> iterable = generator(log);
Iterator<int> it = iterable.iterator;
while (it.moveNext()) {
log.add(it.current);
}
Expect.listEquals([0, 'a', 1, 'b', 2, 'c'], log);
}