C++ (Cpp) nsTArray::InsertElementsAt Examples

Example #1

File: PushManager.cpp Project: bgrins/gecko-dev

// Copies a subscription key buffer into an array.
nsresult
CopySubscriptionKeyToArray(nsIPushSubscription* aSubscription,
                           const nsAString& aKeyName,
                           nsTArray<uint8_t>& aKey)
{
  uint8_t* keyBuffer = nullptr;
  AutoFreeKeyBuffer autoFree(&keyBuffer);

  uint32_t keyLen;
  nsresult rv = aSubscription->GetKey(aKeyName, &keyLen, &keyBuffer);
  if (NS_FAILED(rv)) {
    return rv;
  }
  if (!aKey.SetCapacity(keyLen, fallible) ||
      !aKey.InsertElementsAt(0, keyBuffer, keyLen, fallible)) {
    return NS_ERROR_OUT_OF_MEMORY;
  }
  return NS_OK;
}

Example #2

File: nsAutoSyncState.cpp Project: rickysarraf/icedove

// This method is a hack to prioritize newly inserted messages,
// without changing the size of the queue. It is required since 
// we cannot sort ranges in nsTArray.
nsresult nsAutoSyncState::SortSubQueueBasedOnStrategy(nsTArray<nsMsgKey> &aQueue,
                                                      uint32_t aStartingOffset)
{
  NS_ASSERTION(aStartingOffset < aQueue.Length(), "*** Starting offset is out of range");

  // Copy already downloaded messages into a temporary queue,
  // we want to exclude them from the sort.
  nsTArray<nsMsgKey> tmpQ;
  tmpQ.AppendElements(aQueue.Elements(), aStartingOffset);

  // Remove already downloaded messages and sort the resulting queue
  aQueue.RemoveElementsAt(0, aStartingOffset);

  nsresult rv = SortQueueBasedOnStrategy(aQueue);

  // copy excluded messages back
  aQueue.InsertElementsAt(0, tmpQ);

  return rv;
}