1 files changed, 79 insertions, 0 deletions
diff --git a/xpcom/ds/nsArray.h b/xpcom/ds/nsArray.h
new file mode 100644
index 0000000000..305dbeddae
--- /dev/null
+++ b/xpcom/ds/nsArray.h
@@ -0,0 +1,79 @@
+/* -*- 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 nsArray_h__
+#define nsArray_h__
+
+#include "nsIMutableArray.h"
+#include "nsCOMArray.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "mozilla/Attributes.h"
+
+// {35C66FD1-95E9-4e0a-80C5-C3BD2B375481}
+#define NS_ARRAY_CID                                 \
+  {                                                  \
+    0x35c66fd1, 0x95e9, 0x4e0a, {                    \
+      0x80, 0xc5, 0xc3, 0xbd, 0x2b, 0x37, 0x54, 0x81 \
+    }                                                \
+  }
+
+// nsArray without any refcounting declarations
+class nsArrayBase : public nsIMutableArray {
+ public:
+  NS_DECL_NSIARRAY
+  NS_DECL_NSIARRAYEXTENSIONS
+  NS_DECL_NSIMUTABLEARRAY
+
+  /* Both of these factory functions create a cycle-collectable array
+     on the main thread and a non-cycle-collectable array on other
+     threads.  */
+  static already_AddRefed<nsIMutableArray> Create();
+  /* Only for the benefit of the XPCOM module system, use Create()
+     instead.  */
+  static nsresult XPCOMConstructor(nsISupports* aOuter, const nsIID& aIID,
+                                   void** aResult);
+
+ protected:
+  nsArrayBase() = default;
+  nsArrayBase(const nsArrayBase& aOther);
+  explicit nsArrayBase(const nsCOMArray_base& aBaseArray)
+      : mArray(aBaseArray) {}
+  virtual ~nsArrayBase();
+
+  nsCOMArray_base mArray;
+};
+
+class nsArray final : public nsArrayBase {
+  friend class nsArrayBase;
+
+ public:
+  NS_DECL_ISUPPORTS
+
+ private:
+  nsArray() : nsArrayBase() {}
+  nsArray(const nsArray& aOther);
+  explicit nsArray(const nsCOMArray_base& aBaseArray)
+      : nsArrayBase(aBaseArray) {}
+  ~nsArray() = default;
+};
+
+class nsArrayCC final : public nsArrayBase {
+  friend class nsArrayBase;
+
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsArrayCC, nsIMutableArray)
+
+ private:
+  nsArrayCC() : nsArrayBase() {}
+  nsArrayCC(const nsArrayCC& aOther);
+  explicit nsArrayCC(const nsCOMArray_base& aBaseArray)
+      : nsArrayBase(aBaseArray) {}
+  ~nsArrayCC() = default;
+};
+
+#endif