blob: 7381746dcb7a3f2cb31c51def65bda4665c2d0a0 [file] [log] [blame]
/*
* Copyright (c) 2011, 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 A for statement of the form for (finalConstVarOrType? id in e) s
* is equivalent to the following code:
* var n0 = e.iterator;
* while (n0.moveNext()) {
* finalConstVarOrType? id = n0.current;
* s
* }
* where n0 is an identifier that does not occur anywhere in the program, except
* that for purposes of static typechecking, it is checked under the assumption
* that n0 is declared to be of type T, where T is the static type of e.iterator.
* @description Checks that all of the mentioned methods are executed in the
* specified order.
* @author iefremov
*/
import '../../../../Utils/expect.dart';
var log = "";
addLog(String s) {
log = '$log$s';
}
class TestIterator implements Iterator {
get current {
addLog("current");
}
bool moveNext() {
if (i < 2) {
addLog("moveNext()");
i++;
return true;
}
addLog("moveNext()-exited");
return false;
}
static int i = 0;
}
class TestIterable extends Iterable {
Iterator get iterator {
addLog("iterator");
return new TestIterator();
}
}
main() {
for ( var id in new TestIterable() ) {
addLog("addLog()");
}
Expect.equals("iteratormoveNext()currentaddLog()moveNext()currentaddLog()moveNext()-exited",
log, "Wrong 'for statement' execution!");
}