4000 2005-07-14 10:41:10 -0700 Object.prototype is missing isPrototypeOf 2024-05-27 07:11:55 -0700 1 1 1 Unclassified WebKit JavaScriptCore 412 Mac OS X 10.4 RESOLVED FIXED P2 Normal --- 1 ggaren andersca oldest_to_newest 14654 0 ggaren 2005-07-14 10:41:10 -0700 Section 15.2.4 of ECMA-262 25955 1 5078 andersca 2005-12-14 07:47:09 -0800 Created attachment 5078 Implement isPrototypeOf 25960 2 5078 darin 2005-12-14 09:44:00 -0800 Comment on attachment 5078 Implement isPrototypeOf r=me 25961 3 5078 darin 2005-12-14 09:44:44 -0800 Comment on attachment 5078 Implement isPrototypeOf Wait, should this work for a non-object value if that just happens to be set as the prototype? 25963 4 andersca 2005-12-14 10:03:55 -0800 (In reply to comment #3) > (From update of attachment 5078 [edit]) > Wait, should this work for a non-object value if that just happens to be set as > the prototype? > I don't think so, since you can't invoke methods on non-objects, and they can't have prototype properties anyway, but maybe I'm misunderstanding something 25966 5 ggaren 2005-12-14 10:40:32 -0800 I don't think it's right to test for v being NULL. JSValues should never be null, only jsNull(). 26076 6 darin 2005-12-17 09:01:41 -0800 (In reply to comment #5) > I don't think it's right to test for v being NULL. JSValues should never be null, only jsNull(). That's a good point. The check for 0/NULL is unnecessary and should omitted. 26077 7 darin 2005-12-17 09:04:53 -0800 (In reply to comment #4) > (In reply to comment #3) > > Wait, should this work for a non-object value if that just happens to be set as the prototype? > > I don't think so, since you can't invoke methods on non-objects, and they can't have prototype properties > anyway, but maybe I'm misunderstanding something You're right. I had it backwards. To restate what you said in a more confusing but more thorough way, "this" must be an object so we don't have to look at non- object prototypes since they can't possibly be equal to this. And the argument to the method is the object to find a prototype "of". Thus if the argument is not an object we instantly know "this" is not its prototype since only objects have prototypes. 26106 8 andersca 2005-12-18 05:29:05 -0800 Committed (with some small changes that Geoffrey approved) 1767753 9 dpino 2021-06-08 07:03:11 -0700 bug. 1827602 10 dpino 2022-01-02 19:41:24 -0800 bug. 2038053 11 dpino 2024-05-27 07:11:55 -0700 bug 5078 2005-12-14 07:47:09 -0800 2005-12-14 09:44:00 -0800 Implement isPrototypeOf jscore-isprototypeof.diff text/plain 7458 andersca SW5kZXg6IEphdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwo9PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09ClJDUyBmaWxlOiAvY3Zz L3Jvb3QvSmF2YVNjcmlwdENvcmUvQ2hhbmdlTG9nLHYKcmV0cmlldmluZyByZXZpc2lvbiAxLjkw NApkaWZmIC1wIC11IC1yMS45MDQgSmF2YVNjcmlwdENvcmUvQ2hhbmdlTG9nCi0tLSBKYXZhU2Ny aXB0Q29yZS9DaGFuZ2VMb2cJMTQgRGVjIDIwMDUgMDE6MTQ6MjUgLTAwMDAJMS45MDQKKysrIEph dmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkxNCBEZWMgMjAwNSAxNTo0NTowNiAtMDAwMApAQCAtMSwz 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