Subj : Re: How do I raise an exception?
To   : netscape.public.mozilla.jseng
From : Rob Swindell
Date : Sat Aug 06 2005 01:31 am

"Thomas Sondergaard" <ts_news1@sondergaard.cc> wrote in message 
news:42f08b09$0$2350$edfadb0f@dread11.news.tele.dk...
> Rob Swindell wrote:
>> I use JS_ReportError and it seems to work fine. Example:
>>
>>         if((p=(private_t*)malloc(sizeof(private_t)))==NULL) {
>>                 JS_ReportError(cx,"malloc failed");
>>                 return(JS_FALSE);
>>         }
>>
>
> It doesn't work for me. The error reported with JS_ReportError is passed 
> to the error reporter I have configured with JS_SetErrorReporter, but I 
> don't get a catchable exception my script just exits.

I'm sorry, I was mistaken. The following does throw an exception however:

       if((p=(private_t*)malloc(sizeof(private_t)))==NULL) {
                JS_SetPendingException(cx,argv[0]);
                return(JS_FALSE);
        }

> I tried printing the value returned by JS_IsExceptionPending after calling 
> JS_ReportError, like this:
>
> JS_ReportError(ctx, "Invalid argument - not an int");
> cerr << "after JS_ReportError: " << JS_IsExceptionPending(ctx) << endl;
>
> .. and it tells me that an exception is not pending.
>
> Under what conditions will JS_ReportError not raise an exception?

Apparently never. :-(

-Rob

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