Function gjs_debug_object

gjs/jsapi-util-string.cpp:556–594

}

std::string gjs_debug_object(JSObject* const obj) {
    if (!obj)
        return "<null object>";

    std::ostringstream out;

    if (js::IsFunctionObject(obj)) {
        JSFunction* fun = JS_GetObjectFunction(obj);
        JSString* display_name = JS_GetMaybePartialFunctionDisplayId(fun);
        if (display_name && JS_GetStringLength(display_name))
            out << "<function " << gjs_debug_string(display_name);
        else
            out << "<anonymous function";
        out << " at " << fun << '>';
        return out.str();
    }

    // This is OK because the promise methods can't cause a garbage collection
    JS::HandleObject handle = JS::HandleObject::fromMarkedLocation(&obj);
    if (JS::IsPromiseObject(handle)) {
        out << '<';
        JS::PromiseState state = JS::GetPromiseState(handle);
        if (state == JS::PromiseState::Pending)
            out << "pending ";
        out << "promise " << JS::GetPromiseID(handle) << " at " << obj;
        if (state != JS::PromiseState::Pending) {
            out << ' ';
            out << (state == JS::PromiseState::Rejected ? "rejected"
                                                        : "resolved");
            out << " with " << gjs_debug_value(JS::GetPromiseResult(handle));
        }
        out << '>';
        return out.str();
    }

    const JSClass* clasp = JS::GetClass(obj);
    out << "<object " << clasp->name << " at " << obj <<  '>';
    return out.str();
}

std::string gjs_debug_callable(JSObject* callable) {
    if (JSFunction* fn = JS_GetObjectFunction(callable)) {