js/src/jit-test/tests/for-of/proxy-2.js@6474c204b198 (annotated)
js/src/jit-test/tests/for-of/proxy-2.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.
| michael@0 | 1 | // Basic for-of test with Proxy whose iterator method is a generator. |
| michael@0 | 2 | |
| michael@0 | 3 | var arr = ['a', 'b', 'c', 'd']; |
| michael@0 | 4 | var proxy = Proxy.create({ |
| michael@0 | 5 | getPropertyDescriptor: function (name) { |
| michael@0 | 6 | if (name == 'iterator') { |
| michael@0 | 7 | return { |
| michael@0 | 8 | configurable: false, |
| michael@0 | 9 | enumerable: false, |
| michael@0 | 10 | writeable: false, |
| michael@0 | 11 | value: function () { |
| michael@0 | 12 | for (var i = 0; i < arr.length; i++) |
| michael@0 | 13 | yield arr[i]; |
| michael@0 | 14 | } |
| michael@0 | 15 | }; |
| michael@0 | 16 | } |
| michael@0 | 17 | |
| michael@0 | 18 | // Otherwise, inherit the property from arr. |
| michael@0 | 19 | for (var obj = arr; obj; obj = Object.getPrototypeOf(obj)) { |
| michael@0 | 20 | var desc = Object.getOwnPropertyDescriptor(obj, name); |
| michael@0 | 21 | if (desc) |
| michael@0 | 22 | return desc; |
| michael@0 | 23 | } |
| michael@0 | 24 | return undefined; |
| michael@0 | 25 | } |
| michael@0 | 26 | }); |
| michael@0 | 27 | |
| michael@0 | 28 | for (var i = 0; i < 2; i++) |
| michael@0 | 29 | assertEq([v for (v of proxy)].join(","), "a,b,c,d"); |
