js/src/jit-test/tests/for-of/proxy-2.js

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

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");

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