Subj : Re: how to overload setter function, but keeping standard behavior
To   : sebastien maraux
From : Brendan Eich
Date : Wed Mar 02 2005 05:24 pm

sebastien maraux wrote:
> Hello,
> 
> I am using an array of js vals attached to a js object via
> JS_DefineElement function. When these js data are set, I need to apply
> a specific behavior in addition to the standard one.
> 
> to summarize :
> 
> I would like to use a class with this setter :
> 
> setArrayElement(JSContext *pJSContext, JSObject *pJSObject, jsval id,
> jsval *pJSSetVal)
> {
>        //... manipulating private data according to set value ...
>        JS_SetElement(pJSContext, pJSObject, ind, pJSSetVal);
> }
> 


Your setter is being called from generic "set property" code called from 
the JS_SetElement API, so you don't want to call that code again 
(recursively, divergently).  You should just update *pJSSetVal (argh, 
pseudo-Hungarian! ;-) and return true.

/be

.