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-rw-r--r--dom/file/EmptyBlobImpl.h41
1 files changed, 41 insertions, 0 deletions
diff --git a/dom/file/EmptyBlobImpl.h b/dom/file/EmptyBlobImpl.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_EmptyBlobImpl_h
+#define mozilla_dom_EmptyBlobImpl_h
+
+#include "BaseBlobImpl.h"
+
+namespace mozilla::dom {
+
+class EmptyBlobImpl final : public BaseBlobImpl {
+ public:
+ NS_INLINE_DECL_REFCOUNTING_INHERITED(EmptyBlobImpl, BaseBlobImpl)
+
+ // Blob constructor.
+ explicit EmptyBlobImpl(const nsAString& aContentType)
+ : BaseBlobImpl(aContentType, 0 /* aLength */) {}
+
+ void CreateInputStream(nsIInputStream** aStream,
+ ErrorResult& aRv) const override;
+
+ already_AddRefed<BlobImpl> CreateSlice(uint64_t aStart, uint64_t aLength,
+ const nsAString& aContentType,
+ ErrorResult& aRv) const override;
+
+ bool IsMemoryFile() const override { return true; }
+
+ void GetBlobImplType(nsAString& aBlobImplType) const override {
+ aBlobImplType = u"EmptyBlobImpl"_ns;
+ }
+
+ private:
+ ~EmptyBlobImpl() override = default;
+};
+
+} // namespace mozilla::dom
+
+#endif // mozilla_dom_EmptyBlobImpl_h