Function array_join

src/PyListProxyHandler.cc:1493–1548

}

static bool array_join(JSContext *cx, unsigned argc, JS::Value *vp) {
  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);

  JS::RootedObject proxy(cx, JS::ToObject(cx, args.thisv()));
  if (!proxy) {
    return false;
  }
  PyObject *self = JS::GetMaybePtrFromReservedSlot<PyObject>(proxy, PyObjectSlot);

  Py_ssize_t selfLength = PyList_GET_SIZE(self);

  if (selfLength == 0) {
    args.rval().setString(JS_NewStringCopyZ(cx, ""));
    return true;
  }

  JS::RootedString rootedSeparator(cx);
  if (args.hasDefined(0)) {
    rootedSeparator.set(JS::ToString(cx, args[0]));
  }
  else {
    rootedSeparator.set(JS_NewStringCopyZ(cx, ","));
  }

  JSString *writer = JS_NewStringCopyZ(cx, "");
  JS::RootedString rootedWriter(cx);

  for (Py_ssize_t index = 0; index < selfLength; index++) {
    rootedWriter.set(writer);
    if (index > 0) {
      writer = JS_ConcatStrings(cx, rootedWriter, rootedSeparator);
      rootedWriter.set(writer);
    }

    JS::RootedValue element(cx, jsTypeFactory(cx, PyList_GetItem(self, index)));
    if (!element.isNullOrUndefined()) {
      JS::RootedValue rval(cx);

      JS::RootedObject retObject(cx);

      if (!JS_ValueToObject(cx, element, &retObject)) {
        return false;
      }

      if (!JS_CallFunctionName(cx, retObject, "toString", JS::HandleValueArray::empty(), &rval)) {
        return false;
      }

      JS::RootedString retString(cx, rval.toString());
      writer = JS_ConcatStrings(cx, rootedWriter, retString);
    }
  }

  args.rval().setString(writer);
  return true;
}

static bool array_toString(JSContext *cx, unsigned argc, JS::Value *vp) {