1 files changed, 57 insertions, 0 deletions
diff --git a/xpcom/ds/nsPersistentProperties.h b/xpcom/ds/nsPersistentProperties.h
new file mode 100644
index 0000000000..e35f938371
--- /dev/null
+++ b/xpcom/ds/nsPersistentProperties.h
@@ -0,0 +1,57 @@
+/* -*- 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 nsPersistentProperties_h___
+#define nsPersistentProperties_h___
+
+#include "nsIPersistentProperties2.h"
+#include "PLDHashTable.h"
+#include "nsString.h"
+#include "nsCOMPtr.h"
+#include "mozilla/ArenaAllocator.h"
+#include "mozilla/Attributes.h"
+
+class nsIUnicharInputStream;
+
+class nsPersistentProperties final : public nsIPersistentProperties {
+ public:
+  nsPersistentProperties();
+
+  NS_DECL_THREADSAFE_ISUPPORTS
+  NS_DECL_NSIPROPERTIES
+  NS_DECL_NSIPERSISTENTPROPERTIES
+
+ private:
+  ~nsPersistentProperties();
+
+ protected:
+  nsCOMPtr<nsIUnicharInputStream> mIn;
+
+  PLDHashTable mTable;
+  mozilla::ArenaAllocator<2048, 4> mArena;
+};
+
+class nsPropertyElement final : public nsIPropertyElement {
+ public:
+  nsPropertyElement() = default;
+
+  nsPropertyElement(const nsACString& aKey, const nsAString& aValue)
+      : mKey(aKey), mValue(aValue) {}
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIPROPERTYELEMENT
+
+  static nsresult Create(REFNSIID aIID, void** aResult);
+
+ private:
+  ~nsPropertyElement() = default;
+
+ protected:
+  nsCString mKey;
+  nsString mValue;
+};
+
+#endif /* nsPersistentProperties_h___ */