On Jul 2, 2009, at 10:12 PM, Drew Wilson wrote:
I had another question - I'm looking at JSWorkerConstructor code,
but this pattern exists elsewhere as well:
JSWorkerConstructor::JSWorkerConstructor(ExecState* exec)
: DOMObject(JSWorkerConstructor::createStructure(exec-
>lexicalGlobalObject()->objectPrototype()))
{
putDirect(exec->propertyNames().prototype,
JSWorkerPrototype::self(exec, exec->lexicalGlobalObject()), None);
putDirect(exec->propertyNames().length, jsNumber(exec, 1),
ReadOnly|DontDelete|DontEnum);
}
What is the purpose of the second putDirect() call? I don't see this
in other constructors like JSXMLHttpRequestConstructor, but I do see
it in things like JSOptionConstructor and JSAudioConstructor.
At first I thought it was just some kind of copy/paste error, but
now I'm not so sure given how many files it's found in.
In theory, JavaScript host functions are supposed to have a "length"
property that gives the expected number of arguments. Web IDL might
specify what it's supposed to be. The fact that we are inconsistent is
likely because this is very very unimportant to actual Web
compatibility.
- Maciej
_______________________________________________
webkit-dev mailing list
[email protected]
http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
