C++ jsval::isObject方法代码示例

// static
nsresult
IDBKeyRange::FromJSVal(JSContext* aCx,
                       const jsval& aVal,
                       IDBKeyRange** aKeyRange)
{
  nsRefPtr<IDBKeyRange> keyRange;

  if (aVal.isNullOrUndefined()) {
    // undefined and null returns no IDBKeyRange.
    keyRange.forget(aKeyRange);
    return NS_OK;
  }

  JS::Rooted<JSObject*> obj(aCx, aVal.isObject() ? &aVal.toObject() : nullptr);
  if (aVal.isPrimitive() || JS_IsArrayObject(aCx, obj) ||
      JS_ObjectIsDate(aCx, obj)) {
    // A valid key returns an 'only' IDBKeyRange.
    keyRange = new IDBKeyRange(nullptr, false, false, true);

    nsresult rv = GetKeyFromJSVal(aCx, aVal, keyRange->Lower());
    if (NS_FAILED(rv)) {
      return rv;
    }
  }
  else {
    MOZ_ASSERT(aVal.isObject());
    // An object is not permitted unless it's another IDBKeyRange.
    if (NS_FAILED(UNWRAP_OBJECT(IDBKeyRange, obj, keyRange))) {
      return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
    }
  }

  keyRange.forget(aKeyRange);
  return NS_OK;
}

bool jsval_array_to_string(JSContext *cx, jsval v, std::string* ret)
{
	JS::RootedObject jsobj(cx);
	bool ok = v.isObject() && JS_ValueToObject( cx, JS::RootedValue(cx, v), &jsobj );
	JSB_PRECONDITION2( ok, cx, false, "Error converting value to object");
	JSB_PRECONDITION2( jsobj && JS_IsArrayObject( cx, jsobj), cx, false, "Object must be an array");

	uint32_t len;
	JS_GetArrayLength(cx, jsobj, &len);

	for( uint32_t i=0; i< len;i++ ) {
		JS::RootedValue valarg(cx);
		JS_GetElement(cx, jsobj, i, &valarg);

		std::string temp;
		ok = jsval_to_std_string(cx, valarg, &temp);
		JSB_PRECONDITION2(ok, cx, false, "Error processing arguments");
		if(i != len -1)
			ret->append(temp + ",");
		else
			ret->append(temp);
	}

	return true;
}

JSBool jsval_to_LogEventParamMap(JSContext *cx, jsval v, LogEventParamMap** ret)
{
    JSBool jsret = JS_FALSE;
    if (v.isObject())
    {
        LogEventParamMap* tmp = new LogEventParamMap();
        jsret = jsval_to_TProductInfo(cx, v, tmp);
        if (jsret) {
            *ret = tmp;
        }
    }

    return jsret;
}

JS_WriteTypedArray(JSStructuredCloneWriter *w, jsval v)
{
    JS_ASSERT(v.isObject());
    assertSameCompartment(w->context(), v);
    RootedObject obj(w->context(), &v.toObject());

    // If the object is a security wrapper, see if we're allowed to unwrap it.
    // If we aren't, throw.
    if (obj->isWrapper())
        obj = CheckedUnwrap(obj);
    if (!obj) {
        JS_ReportError(w->context(), "Permission denied to access object");
        return false;
    }
    return w->writeTypedArray(obj);
}

NS_IMETHODIMP
SmsManager::Send(const jsval& aNumber, const nsAString& aMessage, jsval* aReturn)
{
  nsresult rv;
  nsIScriptContext* sc = GetContextForEventHandlers(&rv);
  NS_ENSURE_STATE(sc);
  AutoPushJSContext cx(sc->GetNativeContext());
  NS_ASSERTION(cx, "Failed to get a context!");

  if (!aNumber.isString() &&
      !(aNumber.isObject() && JS_IsArrayObject(cx, &aNumber.toObject()))) {
    return NS_ERROR_INVALID_ARG;
  }

  JSObject* global = sc->GetNativeGlobal();
  NS_ASSERTION(global, "Failed to get global object!");

  JSAutoRequest ar(cx);
  JSAutoCompartment ac(cx, global);

  if (aNumber.isString()) {
    return Send(cx, global, aNumber.toString(), aMessage, aReturn);
  }

  // Must be an array then.
  JSObject& numbers = aNumber.toObject();

  uint32_t size;
  JS_ALWAYS_TRUE(JS_GetArrayLength(cx, &numbers, &size));

  jsval* requests = new jsval[size];

  for (uint32_t i=0; i<size; ++i) {
    jsval number;
    if (!JS_GetElement(cx, &numbers, i, &number)) {
      return NS_ERROR_INVALID_ARG;
    }

    nsresult rv = Send(cx, global, number.toString(), aMessage, &requests[i]);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  aReturn->setObjectOrNull(JS_NewArrayObject(cx, size, requests));
  NS_ENSURE_TRUE(aReturn->isObject(), NS_ERROR_FAILURE);

  return NS_OK;
}

NS_IMETHODIMP
SmsRequest::NotifyThreadList(const jsval& aThreadList, JSContext* aCx)
{
  MOZ_ASSERT(aThreadList.isObject());

  if (mParent) {
    JSObject* array = const_cast<JSObject*>(&aThreadList.toObject());

    uint32_t length;
    bool ok = JS_GetArrayLength(aCx, array, &length);
    NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);

    ReplyThreadList reply;
    InfallibleTArray<ThreadListItem>& ipcItems = reply.items();

    if (length) {
      ipcItems.SetCapacity(length);

      for (uint32_t i = 0; i < length; i++) {
        jsval arrayEntry;
        ok = JS_GetElement(aCx, array, i, &arrayEntry);
        NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);

        MOZ_ASSERT(arrayEntry.isObject());

        mozilla::idl::SmsThreadListItem item;
        nsresult rv = item.Init(aCx, &arrayEntry);
        NS_ENSURE_SUCCESS(rv, rv);

        ThreadListItem* ipcItem = ipcItems.AppendElement();
        ipcItem->senderOrReceiver() = item.senderOrReceiver;
        ipcItem->timestamp() = item.timestamp;
        ipcItem->body() = item.body;
        ipcItem->unreadCount() = item.unreadCount;
      }
    }

    return SendMessageReply(reply);
  }

  return NotifySuccess(aThreadList);
}

NS_IMETHODIMP
SmsManager::Delete(const jsval& aParam, nsIDOMMozSmsRequest** aRequest)
{
  if (aParam.isInt32()) {
    return Delete(aParam.toInt32(), aRequest);
  }

  if (!aParam.isObject()) {
    return NS_ERROR_INVALID_ARG;
  }

  nsresult rv;
  nsIScriptContext* sc = GetContextForEventHandlers(&rv);
  AutoPushJSContext cx(sc->GetNativeContext());
  NS_ENSURE_STATE(sc);
  nsCOMPtr<nsIDOMMozSmsMessage> message =
    do_QueryInterface(nsContentUtils::XPConnect()->GetNativeOfWrapper(cx, &aParam.toObject()));
  NS_ENSURE_TRUE(message, NS_ERROR_INVALID_ARG);

  int32_t id;
  message->GetId(&id);

  return Delete(id, aRequest);
}

NS_IMETHODIMP
SmsManager::Send(const jsval& aNumber, const nsAString& aMessage, jsval* aReturn)
{
  nsresult rv;
  nsIScriptContext* sc = GetContextForEventHandlers(&rv);
  NS_ENSURE_STATE(sc);
  JSContext* cx = sc->GetNativeContext();
  NS_ASSERTION(cx, "Failed to get a context!");

  if (!aNumber.isString() &&
      !(aNumber.isObject() && JS_IsArrayObject(cx, &aNumber.toObject()))) {
    return NS_ERROR_INVALID_ARG;
  }

  JSObject* global = sc->GetNativeGlobal();
  NS_ASSERTION(global, "Failed to get global object!");

  JSAutoRequest ar(cx);
  JSAutoCompartment ac(cx, global);

  if (aNumber.isString()) {
    return Send(cx, global, aNumber.toString(), aMessage, aReturn);
  }

  // Must be an object then.
  if (!aNumber.isObject()) {
    return NS_ERROR_FAILURE;
  }

  JSObject& numbers = aNumber.toObject();
  uint32_t size;
  if (!JS_GetArrayLength(cx, &numbers, &size)) {
    return NS_ERROR_FAILURE;
  }

  JS::AutoValueVector requests(cx);
  if (!requests.resize(size)) {
    return NS_ERROR_FAILURE;
  }

  JSString *str;
  for (uint32_t i = 0; i < size; ++i) {
    jsval number;
    if (!JS_GetElement(cx, &numbers, i, &number)) {
      return NS_ERROR_INVALID_ARG;
    }

    str = JS_ValueToString(cx, number);
    if (!str) {
      return NS_ERROR_FAILURE;
    }

    nsresult rv = Send(cx, global, str, aMessage, &requests[i]);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  JSObject* obj = JS_NewArrayObject(cx, requests.length(), requests.begin());
  if (!obj) {
    return NS_ERROR_FAILURE;
  }

  aReturn->setObject(*obj);
  return NS_OK;
}