js/src/tests/ecma_6/Generators/delegating-yield-12.js@6474c204b198
js/src/tests/ecma_6/Generators/delegating-yield-12.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 // yield* calls @@iterator on the iterable to produce the iterator.
3 var log = '';
5 function IteratorWrapper(iterator) {
6 return {
7 next: function (val) {
8 log += 'n';
9 return iterator.next(val);
10 },
12 throw: function (exn) {
13 log += 't';
14 return iterator.throw(exn);
15 }
16 };
17 }
19 function IterableWrapper(iterable) {
20 var ret = {};
22 ret[std_iterator] = function () {
23 log += 'i';
24 return IteratorWrapper(iterable[std_iterator]());
25 }
27 return ret;
28 }
30 function* delegate(iter) { return yield* iter; }
32 var iter = delegate(IterableWrapper([1, 2, 3]));
33 assertIteratorNext(iter, 1);
34 assertIteratorNext(iter, 2);
35 assertIteratorNext(iter, 3);
36 assertIteratorDone(iter, undefined);
38 assertEq(log, 'innnn');
40 iter = delegate([1, 2, 3]);
41 assertIteratorNext(iter, 1);
42 assertIteratorNext(iter, 2);
43 assertIteratorNext(iter, 3);
44 assertIteratorDone(iter, undefined);
46 assertEq(log, 'innnn');
48 if (typeof reportCompare == "function")
49 reportCompare(true, true);
