Subj : Re: How to distinguish objects of the same type in C?
To   : netscape.public.mozilla.jseng
From : Weiyang Zhou
Date : Thu Aug 11 2005 11:05 am

When you say destructor, you mean the finalize function, right?


"Peter Wilson" <petew@yellowhawk.co.uk> wrote in message 
news:ddett0$jv2@ripley.netscape.com...
> Weiyang Zhou wrote:
>> Hi,
>>
>> If I use JS_initClass to define a class Foo, the contructor will allocate 
>> some instance data in C for the object created. I also use 
>> JS_DefineFunction to define a function called fooOp(). Assuming the C 
>> implementation of this function is fooOp_native().
>>
>> With the following JavaScript:
>>
>> f1 = new Foo();
>> f2 = new Foo();
>>
>> fooOp(f1, f2);
>>
>> In fooOp_native(), I will need to retrieve the instance data from each 
>> object. How should I do that?
>>
>> I have read jsdate.c, seems it uses OBJ_SET_SLOT/OBJ_GET_SLOT, but it is 
>> not in jsapi.h. Or should I use JS_SetPrivate/JS_GetPrivate?
>>
>> Thank you
>> Weiyang
>>
> I use JS_SetPrivate/JS_GetPrivate for a number of native classes - does
> everything I need. I also hook into the destructor to make sure I release
> private data when the JS equiv is garbage collected.
>
> Pete
> --
> Peter Wilson. http://www.whitebeam.org, http://www.yellowhawk.co.uk

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