1 files changed, 77 insertions, 0 deletions
diff --git a/dom/encoding/TextDecoderStream.h b/dom/encoding/TextDecoderStream.h
new file mode 100644
index 0000000000..a635157590
--- /dev/null
+++ b/dom/encoding/TextDecoderStream.h
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 DOM_ENCODING_TEXTDECODERSTREAM_H_
+#define DOM_ENCODING_TEXTDECODERSTREAM_H_
+
+#include "js/TypeDecls.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/TextDecoder.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+
+class nsIGlobalObject;
+
+namespace mozilla {
+
+class Decoder;
+class Encoding;
+
+namespace dom {
+
+class ReadableStream;
+class WritableStream;
+struct TextDecoderOptions;
+class TransformStream;
+
+}  // namespace dom
+
+}  // namespace mozilla
+
+namespace mozilla::dom {
+
+class TextDecoderStream final : public nsISupports,
+                                public nsWrapperCache,
+                                public TextDecoderCommon {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(TextDecoderStream)
+
+ public:
+  TextDecoderStream(nsISupports* aGlobal, const Encoding& aEncoding,
+                    bool aFatal, bool aIgnoreBOM, TransformStream& aStream);
+
+  nsISupports* GetParentObject() const { return mGlobal; }
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  mozilla::Decoder* Decoder() { return mDecoder.get(); }
+
+  // TODO: Mark as MOZ_CAN_RUN_SCRIPT when IDL constructors can be (bug 1749042)
+  MOZ_CAN_RUN_SCRIPT_BOUNDARY static already_AddRefed<TextDecoderStream>
+  Constructor(const GlobalObject& aGlobal, const nsAString& aLabel,
+              const TextDecoderOptions& aOptions, ErrorResult& aRv);
+
+  ReadableStream* Readable() const;
+
+  WritableStream* Writable() const;
+
+ private:
+  ~TextDecoderStream();
+
+  nsCOMPtr<nsISupports> mGlobal;
+  RefPtr<TransformStream> mStream;
+};
+
+Span<const uint8_t> ExtractSpanFromBufferSource(
+    JSContext* aCx, JS::Handle<JS::Value> aBufferSource, ErrorResult& aRv);
+
+}  // namespace mozilla::dom
+
+#endif  // DOM_ENCODING_TEXTDECODERSTREAM_H_