On Jun 19, 11:33 am, Norris Boyd <[EMAIL PROTECTED]> wrote:
> On Jun 19, 10:36 am, Mike Tardif <[EMAIL PROTECTED]> wrote:
>
>
>
> > On Jun 18, 8:28 pm, Norris Boyd <[EMAIL PROTECTED]> wrote:
>
> > > On Jun 18, 4:57 pm, Mike Tardif <[EMAIL PROTECTED]> wrote:
>
> > > > Hi Again
>
> > > > I've exposed my objects (whose properties are dynamic) to JavaScript
> > > > by deriving from ScriptableObject and generally all is good.
>
> > > > But I've failed to properly deal with this JavaScript scenario:
> > > > try {
> > > > myObject.notMyProperty = "hello"
> > > > }
> > > > catch(e) {
> > > > "unrecognized property"
> > > > }
> > > > "hello world"
>
> > > > My question is: in myObject's put(String, Scriptable, Object) method,
> > > > what kind of RhinoException do I throw when myObject recognizes that
> > > > notMyProperty is invalid, so that catch block in the above script gets
> > > > executed as well as any code that follows.
>
> > > > I wish the docs for Scriptable and/or ScriptableObject would expand a
> > > > bit more on exception handling.
>
> > > Standard JavaScript behavior is that assignment to an undefined
> > > property results in creation of the property. That means that I didn't
> > > define a standard exception for failures. What kind of failure are you
> > > wanting to throw an exception for?
>
> > > --Norris
>
> > Thanks for the quick reply. I should have added that I'm trying to
> > emulate this script behaviour
> > that is running on two other JS engines. The designer of "myObj"
> > spec'ed it out to throw on undefined
> > properties. Is there any way to trick Rhino into throwing?
> > Scriptable.has() apparently gets called before a put (the docs say a
> > set). Maybe that's the approach I should take.
>
> That's fine, Java objects behave this way when accessed from
> JavaScript. Probably the easiest thing to do is to throw a
> WrappedException constructed with a Java exception type that you
> define.
>
> --N
I had tried that originally, without success. I've re-tried, with
ditto results. Throwing a WrappedException or any other kind of
RhinoException in ScriptableObject.put() kicks me out of
Script.exec(Context, Scriptable) without executing the JS catch block
and any code that follows.
Do I need to derive any thing in particular from SciptableObject to
make this happens?
PS: I'm using version 1.6.5
_______________________________________________
dev-tech-js-engine-rhino mailing list
[email protected]
https://lists.mozilla.org/listinfo/dev-tech-js-engine-rhino
