Subj : JS_AddNamedRoot
To   : netscape.public.mozilla.jseng
From : "aadamov" <aadamov@mindspring.com>
Date : Sun Jan 04 2004 10:22 pm

Followinf up on the previous message. I did create a generic wrapper for DOM
embedded in SpiderMonkey, but... Couple of buts:
1) I would still like to know if there is well thought through "standart"
implementation for that;
2) I am stuck trying to use JS_AddNamedRoot in order to instantiate root of
the DOM object in JS context. In fact I run into problem using
JS_AddNamedRoot even for standart types. For instance:
   std::string name = "red";
   JSString *jstr = JS_NewStringCopyN(cx, name.c_str(), name.length());
   JS_AddNamedRoot( cx, (void*)jstr, "myRoot" );
   std::string script = "myRoot;";
   jsval rval;
   uintN lineno = 0;
   JSBool ok = JS_EvaluateScript(cx, globalObj, script.c_str(),
                                  script.length(), "script", lineno, &rval);

Evaluating above script I get JS_FALSE return value.
I guess it only makes sense, since I am passing a void pointer to jstr in my
call to JS_AddNamedRoot. How in life would runtime know what type of an
object I just passed to it. That is unles there is some kind of reflection
mechanism build into it. Better off going to sleep now.

.