Subj : Re: about defining object...
To   : netscape.public.mozilla.jseng
From : celleris@naver.com (Youngsun Jeong)
Date : Tue Sep 30 2003 09:37 pm

Brendan Eich <brendan@meer.net> wrote in message news:<3F7A0217.5070205@meer.net>...
> Youngsun Jeong wrote:
> 
> >Next, I add JSFunction "my_plusAge()" to my_class. 
> >  
> >
> 
> How do you do that, exactly?

Please see below:

file name : myobject.h

#ifndef myobject_h___
#define myobject_h___
#include "jstypes.h"

JS_BEGIN_EXTERN_C

extern JSClass my_class;
extern JSObject* InitMyobjectClass(JSContext *cx, JSObject *obj);
extern JSFunctionSpec my_method;

JS_END_EXTERN_C
#endif /* dom_h___ */

file name : myobject.c

#include "jsapi.h"
#include "jsobj.h"
#include "jsfun.h"
#include "jsutil.h"

JSClass my_class = {
    "myobject",
    0,
    JS_PropertyStub,  JS_PropertyStub,  JS_PropertyStub, 
JS_PropertyStub,
    JS_EnumerateStub, JS_ResolveStub,   JS_ConvertStub,  
JS_FinalizeStub,
    JSCLASS_NO_OPTIONAL_MEMBERS
};

static JSFunctionSpec my_method[] = {
    {"my_plusAge", my_plusAge , 0,0,0},
    {0, 0, 0, 0, 0}
};

static JSBool
my_plusAge(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,jsval
*rval)
{
     ...
}

JSObject* InitMyobjectClass(JSContext *cx, JSObject *obj)
{
    JSObject *proto;

    proto = JS_InitClass(cx, obj, NULL, &my_class, NULL, 1, NULL,
my_method, NULL,NULL);

    if(!proto)
        return NULL;
    return proto;
}


"my_class" has method "my_plusAge()", doesn't have any properties.
And I add "InitMyobjectClass" to jsapi.c. See below:

file name : jsapi.c 
                      ...
#include "myobject.h"  //added
                      ...
JS_PUBLIC_API(JSBool)
JS_InitStandardClasses(JSContext *cx, JSObject *obj)
{  
                      ...  
      return js_InitArrayClass(cx, obj) &&
           js_InitBooleanClass(cx, obj) &&
           js_InitMathClass(cx, obj) &&
           js_InitNumberClass(cx, obj) &&
           js_InitStringClass(cx, obj) &&
           InitMyobjectClass(cx, obj) &&   //added
                      ...
}
What is wrong?
And I want to know how do make the relation between "age" and
"plusAge()".
Thank you for any assistance.

.