1 files changed, 124 insertions, 0 deletions
diff --git a/dom/fs/api/FileSystemSyncAccessHandle.h b/dom/fs/api/FileSystemSyncAccessHandle.h
new file mode 100644
index 0000000000..ec2ca9bd76
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+++ b/dom/fs/api/FileSystemSyncAccessHandle.h
@@ -0,0 +1,124 @@
+/* -*- 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 DOM_FS_FILESYSTEMSYNCACCESSHANDLE_H_
+#define DOM_FS_FILESYSTEMSYNCACCESSHANDLE_H_
+
+#include "mozilla/dom/PFileSystemManager.h"
+#include "mozilla/dom/quota/ForwardDecls.h"
+#include "nsCOMPtr.h"
+#include "nsISupports.h"
+#include "nsWrapperCache.h"
+
+class nsIGlobalObject;
+
+namespace mozilla {
+
+class ErrorResult;
+class TaskQueue;
+
+namespace dom {
+
+class FileSystemAccessHandleChild;
+struct FileSystemReadWriteOptions;
+class FileSystemManager;
+class MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer;
+class Promise;
+class StrongWorkerRef;
+
+class FileSystemSyncAccessHandle final : public nsISupports,
+                                         public nsWrapperCache {
+ public:
+  enum struct State : uint8_t { Initial = 0, Open, Closing, Closed };
+
+  static Result<RefPtr<FileSystemSyncAccessHandle>, nsresult> Create(
+      nsIGlobalObject* aGlobal, RefPtr<FileSystemManager>& aManager,
+      RefPtr<FileSystemAccessHandleChild> aActor,
+      mozilla::ipc::RandomAccessStreamParams&& aStreamParams,
+      const fs::FileSystemEntryMetadata& aMetadata);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(FileSystemSyncAccessHandle)
+
+  void LastRelease();
+
+  void ClearActor();
+
+  bool IsOpen() const;
+
+  bool IsClosing() const;
+
+  bool IsClosed() const;
+
+  [[nodiscard]] RefPtr<BoolPromise> BeginClose();
+
+  [[nodiscard]] RefPtr<BoolPromise> OnClose();
+
+  // WebIDL Boilerplate
+  nsIGlobalObject* GetParentObject() const;
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  // WebIDL Interface
+  uint64_t Read(
+      const MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aBuffer,
+      const FileSystemReadWriteOptions& aOptions, ErrorResult& aRv);
+
+  uint64_t Write(
+      const MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aBuffer,
+      const FileSystemReadWriteOptions& aOptions, ErrorResult& aRv);
+
+  void Truncate(uint64_t aSize, ErrorResult& aError);
+
+  uint64_t GetSize(ErrorResult& aError);
+
+  void Flush(ErrorResult& aError);
+
+  void Close();
+
+ private:
+  FileSystemSyncAccessHandle(
+      nsIGlobalObject* aGlobal, RefPtr<FileSystemManager>& aManager,
+      RefPtr<FileSystemAccessHandleChild> aActor,
+      RefPtr<TaskQueue> aIOTaskQueue,
+      mozilla::ipc::RandomAccessStreamParams&& aStreamParams,
+      const fs::FileSystemEntryMetadata& aMetadata);
+
+  virtual ~FileSystemSyncAccessHandle();
+
+  uint64_t ReadOrWrite(
+      const MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aBuffer,
+      const FileSystemReadWriteOptions& aOptions, const bool aRead,
+      ErrorResult& aRv);
+
+  nsresult EnsureStream();
+
+  nsCOMPtr<nsIGlobalObject> mGlobal;
+
+  RefPtr<FileSystemManager> mManager;
+
+  RefPtr<FileSystemAccessHandleChild> mActor;
+
+  RefPtr<TaskQueue> mIOTaskQueue;
+
+  nsCOMPtr<nsIRandomAccessStream> mStream;
+
+  RefPtr<StrongWorkerRef> mWorkerRef;
+
+  MozPromiseHolder<BoolPromise> mClosePromiseHolder;
+
+  mozilla::ipc::RandomAccessStreamParams mStreamParams;
+
+  const fs::FileSystemEntryMetadata mMetadata;
+
+  State mState;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // DOM_FS_FILESYSTEMSYNCACCESSHANDLE_H_