Subj : JS_ValueToString and STRING_TO_JSVAL
To   : netscape.public.mozilla.jseng
From : Weiyang Zhou
Date : Thu Aug 11 2005 11:37 pm

In js.c of the example JS shell, there is a function called Load. It has the 
following code:

static JSBool
Load(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
.....
    for (i = 0; i < argc; i++) {
        str = JS_ValueToString(cx, argv[i]);
        if (!str)
            return JS_FALSE;
        argv[i] = STRING_TO_JSVAL(str);
        filename = JS_GetStringBytes(str);

....

What's the purpose of converting argv[i] to str, the assign str back to 
argv[i]? In the end, argv[i] remain the same.

Thanks.
Weiyang

.