C++ Sequence::Length方法代码示例

already_AddRefed<Promise>
Cache::AddAll(JSContext* aContext,
              const Sequence<OwningRequestOrUSVString>& aRequestList,
              CallerType aCallerType,
              ErrorResult& aRv)
{
  if (NS_WARN_IF(!mActor)) {
    aRv.Throw(NS_ERROR_UNEXPECTED);
    return nullptr;
  }

  CacheChild::AutoLock actorLock(mActor);

  GlobalObject global(aContext, mGlobal->GetGlobalJSObject());
  MOZ_DIAGNOSTIC_ASSERT(!global.Failed());

  nsTArray<RefPtr<Request>> requestList(aRequestList.Length());
  for (uint32_t i = 0; i < aRequestList.Length(); ++i) {
    RequestOrUSVString requestOrString;

    if (aRequestList[i].IsRequest()) {
      requestOrString.SetAsRequest() = aRequestList[i].GetAsRequest();
      if (NS_WARN_IF(!IsValidPutRequestMethod(requestOrString.GetAsRequest(),
                     aRv))) {
        return nullptr;
      }
    } else {
      requestOrString.SetAsUSVString().Rebind(
        aRequestList[i].GetAsUSVString().Data(),
        aRequestList[i].GetAsUSVString().Length());
    }

    RefPtr<Request> request = Request::Constructor(global, requestOrString,
                                                   RequestInit(), aRv);
    if (NS_WARN_IF(aRv.Failed())) {
      return nullptr;
    }

    nsAutoString url;
    request->GetUrl(url);
    if (NS_WARN_IF(!IsValidPutRequestURL(url, aRv))) {
      return nullptr;
    }

    requestList.AppendElement(std::move(request));
  }

  return AddAll(global, std::move(requestList), aCallerType, aRv);
}

void
MobileMessageManager::Send(const Sequence<nsString>& aNumbers,
                           const nsAString& aText,
                           const SmsSendParameters& aSendParams,
                           nsTArray<RefPtr<DOMRequest>>& aReturn,
                           ErrorResult& aRv)
{
  nsCOMPtr<nsISmsService> smsService = do_GetService(SMS_SERVICE_CONTRACTID);
  if (!smsService) {
    aRv.Throw(NS_ERROR_FAILURE);
    return;
  }

  // Use the default one unless |aSendParams.serviceId| is available.
  uint32_t serviceId;
  if (aSendParams.mServiceId.WasPassed()) {
    serviceId = aSendParams.mServiceId.Value();
  } else {
    nsresult rv = smsService->GetSmsDefaultServiceId(&serviceId);
    if (NS_FAILED(rv)) {
      aRv.Throw(rv);
      return;
    }
  }

  const uint32_t size = aNumbers.Length();
  for (uint32_t i = 0; i < size; ++i) {
    RefPtr<DOMRequest> request = Send(smsService, serviceId, aNumbers[i], aText, aRv);
    if (aRv.Failed()) {
      return;
    }
    aReturn.AppendElement(request);
  }
}

already_AddRefed<DOMRequest>
MobileMessageManager::Delete(const Sequence<OwningLongOrSmsMessageOrMmsMessage>& aParams,
                             ErrorResult& aRv)
{
  const uint32_t size = aParams.Length();
  FallibleTArray<int32_t> idArray;
  if (!idArray.SetLength(size, fallible)) {
    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
    return nullptr;
  }

  DebugOnly<nsresult> rv;
  for (uint32_t i = 0; i < size; i++) {
    const OwningLongOrSmsMessageOrMmsMessage& element = aParams[i];
    int32_t &id = idArray[i];

    if (element.IsLong()) {
      id = element.GetAsLong();
    } else if (element.IsMmsMessage()) {
      id = element.GetAsMmsMessage()->Id();
    } else /*if (element.IsSmsMessage())*/ {
      id = element.GetAsSmsMessage()->Id();
    }
  }

  return Delete(idArray.Elements(), size, aRv);
}

already_AddRefed<DOMMatrix>
DOMMatrix::Constructor(const GlobalObject& aGlobal, const Sequence<double>& aNumberSequence, ErrorResult& aRv)
{
  RefPtr<DOMMatrix> obj = new DOMMatrix(aGlobal.GetAsSupports());
  SetDataInMatrix(obj, aNumberSequence.Elements(), aNumberSequence.Length(), aRv);

  return obj.forget();
}

already_AddRefed<TouchList> TouchEvent::CopyTouches(
    const Sequence<OwningNonNull<Touch>>& aTouches) {
  RefPtr<TouchList> list = new TouchList(GetParentObject());
  size_t len = aTouches.Length();
  for (size_t i = 0; i < len; ++i) {
    list->Append(aTouches[i]);
  }
  return list.forget();
}

already_AddRefed<Promise>
Cache::AddAll(const Sequence<OwningRequestOrUSVString>& aRequests,
              ErrorResult& aRv)
{
  MOZ_ASSERT(mActor);

  nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
  if (!promise) {
    return nullptr;
  }

  // If there is no work to do, then resolve immediately
  if (aRequests.IsEmpty()) {
    promise->MaybeResolve(JS::UndefinedHandleValue);
    return promise.forget();
  }

  AutoChildRequestList requests(this, aRequests.Length());

  for (uint32_t i = 0; i < aRequests.Length(); ++i) {
    if (!IsValidPutRequestMethod(aRequests[i], aRv)) {
      return nullptr;
    }

    nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequests[i], ReadBody,
                                                     aRv);
    if (aRv.Failed()) {
      return nullptr;
    }

    requests.Add(ir, ReadBody, ExpandReferrer, NetworkErrorOnInvalidScheme,
                 aRv);
    if (aRv.Failed()) {
      return nullptr;
    }
  }

  RequestId requestId = AddRequestPromise(promise, aRv);

  unused << mActor->SendAddAll(requestId, requests.SendAsRequestList());

  return promise.forget();
}

bool
CryptoKey::AllUsagesRecognized(const Sequence<nsString>& aUsages)
{
  for (uint32_t i = 0; i < aUsages.Length(); ++i) {
    if (!IsRecognizedUsage(aUsages[i])) {
      return false;
    }
  }
  return true;
}

void
MultipartBlobImpl::InitializeBlob(
       JSContext* aCx,
       const Sequence<OwningArrayBufferOrArrayBufferViewOrBlobOrString>& aData,
       const nsAString& aContentType,
       bool aNativeEOL,
       ErrorResult& aRv)
{
  mContentType = aContentType;
  BlobSet blobSet;

  for (uint32_t i = 0, len = aData.Length(); i < len; ++i) {
    const OwningArrayBufferOrArrayBufferViewOrBlobOrString& data = aData[i];

    if (data.IsBlob()) {
      nsRefPtr<Blob> blob = data.GetAsBlob().get();
      blobSet.AppendBlobImpl(blob->Impl());
    }

    else if (data.IsString()) {
      aRv = blobSet.AppendString(data.GetAsString(), aNativeEOL, aCx);
      if (aRv.Failed()) {
        return;
      }
    }

    else if (data.IsArrayBuffer()) {
      const ArrayBuffer& buffer = data.GetAsArrayBuffer();
      buffer.ComputeLengthAndData();
      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
      if (aRv.Failed()) {
        return;
      }
    }

    else if (data.IsArrayBufferView()) {
      const ArrayBufferView& buffer = data.GetAsArrayBufferView();
      buffer.ComputeLengthAndData();
      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
      if (aRv.Failed()) {
        return;
      }
    }

    else {
      MOZ_CRASH("Impossible blob data type.");
    }
  }


  mBlobImpls = blobSet.GetBlobImpls();
  SetLengthAndModifiedDate();
}

  void
  Initialize(JSContext* aCx, Console::MethodName aName,
             const nsAString& aString, const Sequence<JS::Value>& aArguments)
  {
    mGlobal = JS::CurrentGlobalOrNull(aCx);
    mMethodName = aName;
    mMethodString = aString;

    for (uint32_t i = 0; i < aArguments.Length(); ++i) {
      mArguments.AppendElement(aArguments[i]);
    }
  }

void
InternalHeaders::Fill(const Sequence<Sequence<nsCString>>& aInit, ErrorResult& aRv)
{
  for (uint32_t i = 0; i < aInit.Length() && !aRv.Failed(); ++i) {
    const Sequence<nsCString>& tuple = aInit[i];
    if (tuple.Length() != 2) {
      aRv.ThrowTypeError<MSG_INVALID_HEADER_SEQUENCE>();
      return;
    }
    Append(tuple[0], tuple[1], aRv);
  }
}

static nsCString ToCString(const Sequence<Type>& aSequence) {
  nsCString str;
  str.AppendLiteral("[");
  for (size_t i = 0; i < aSequence.Length(); i++) {
    if (i != 0) {
      str.AppendLiteral(",");
    }
    str.Append(ToCString(aSequence[i]));
  }
  str.AppendLiteral("]");
  return str;
}

void
MultipartBlobImpl::InitializeBlob(const Sequence<Blob::BlobPart>& aData,
                                  const nsAString& aContentType,
                                  bool aNativeEOL,
                                  ErrorResult& aRv)
{
  mContentType = aContentType;
  BlobSet blobSet;

  for (uint32_t i = 0, len = aData.Length(); i < len; ++i) {
    const Blob::BlobPart& data = aData[i];

    if (data.IsBlob()) {
      RefPtr<Blob> blob = data.GetAsBlob().get();
      blobSet.AppendBlobImpl(blob->Impl());
    }

    else if (data.IsUSVString()) {
      aRv = blobSet.AppendString(data.GetAsUSVString(), aNativeEOL);
      if (aRv.Failed()) {
        return;
      }
    }

    else if (data.IsArrayBuffer()) {
      const ArrayBuffer& buffer = data.GetAsArrayBuffer();
      buffer.ComputeLengthAndData();
      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
      if (aRv.Failed()) {
        return;
      }
    }

    else if (data.IsArrayBufferView()) {
      const ArrayBufferView& buffer = data.GetAsArrayBufferView();
      buffer.ComputeLengthAndData();
      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
      if (aRv.Failed()) {
        return;
      }
    }

    else {
      MOZ_CRASH("Impossible blob data type.");
    }
  }


  mBlobImpls = blobSet.GetBlobImpls();
  SetLengthAndModifiedDate(aRv);
  NS_WARNING_ASSERTION(!aRv.Failed(), "SetLengthAndModifiedDate failed");
}

// static
nsresult KeyPath::Parse(const Sequence<nsString>& aStrings, KeyPath* aKeyPath) {
  KeyPath keyPath(0);
  keyPath.SetType(ARRAY);

  for (uint32_t i = 0; i < aStrings.Length(); ++i) {
    if (!keyPath.AppendStringWithValidation(aStrings[i])) {
      return NS_ERROR_FAILURE;
    }
  }

  *aKeyPath = keyPath;
  return NS_OK;
}

void
BluetoothAdapter::DispatchAttributeEvent(const Sequence<nsString>& aTypes)
{
  NS_ENSURE_TRUE_VOID(aTypes.Length());

  BluetoothAttributeEventInit init;
  init.mAttrs = aTypes;

  nsRefPtr<BluetoothAttributeEvent> event =
    BluetoothAttributeEvent::Constructor(
      this, NS_LITERAL_STRING(ATTRIBUTE_CHANGED_ID), init);

  DispatchTrustedEvent(event);
}

bool
nsScreen::MozLockOrientation(const Sequence<nsString>& aOrientations,
                             ErrorResult& aRv)
{
  if (ShouldResistFingerprinting()) {
    return false;
  }
  hal::ScreenOrientation orientation = hal::eScreenOrientation_None;

  for (uint32_t i = 0; i < aOrientations.Length(); ++i) {
    const nsString& item = aOrientations[i];

    if (item.EqualsLiteral("portrait")) {
      orientation |= hal::eScreenOrientation_PortraitPrimary |
                     hal::eScreenOrientation_PortraitSecondary;
    } else if (item.EqualsLiteral("portrait-primary")) {
      orientation |= hal::eScreenOrientation_PortraitPrimary;
    } else if (item.EqualsLiteral("portrait-secondary")) {
      orientation |= hal::eScreenOrientation_PortraitSecondary;
    } else if (item.EqualsLiteral("landscape")) {
      orientation |= hal::eScreenOrientation_LandscapePrimary |
                     hal::eScreenOrientation_LandscapeSecondary;
    } else if (item.EqualsLiteral("landscape-primary")) {
      orientation |= hal::eScreenOrientation_LandscapePrimary;
    } else if (item.EqualsLiteral("landscape-secondary")) {
      orientation |= hal::eScreenOrientation_LandscapeSecondary;
    } else if (item.EqualsLiteral("default")) {
      orientation |= hal::eScreenOrientation_Default;
    } else {
      // If we don't recognize the token, we should just return 'false'
      // without throwing.
      return false;
    }
  }

  switch (mScreenOrientation->GetLockOrientationPermission(false)) {
    case ScreenOrientation::LOCK_DENIED:
      return false;
    case ScreenOrientation::LOCK_ALLOWED:
      UpdateDocShellOrientationLock(GetOwner(), orientation);
      return mScreenOrientation->LockDeviceOrientation(orientation, false, aRv);
    case ScreenOrientation::FULLSCREEN_LOCK_ALLOWED:
      UpdateDocShellOrientationLock(GetOwner(), orientation);
      return mScreenOrientation->LockDeviceOrientation(orientation, true, aRv);
  }

  // This is only for compilers that don't understand that the previous switch
  // will always return.
  MOZ_CRASH("unexpected lock orientation permission value");
}