--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit2/Shared/ImmutableArray.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ImmutableArray_h
+#define ImmutableArray_h
+
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace WebKit {
+
+// ImmutableArray - An immutable array type suitable for vending to an API.
+
+class ImmutableArray : public RefCounted<ImmutableArray> {
+public:
+    struct ImmutableArrayCallbacks {
+        typedef void (*ImmutableArrayCallback)(const void*);
+        ImmutableArrayCallback ref;
+        ImmutableArrayCallback deref;
+    };
+
+    static PassRefPtr<ImmutableArray> create()
+    {
+        return adoptRef(new ImmutableArray);
+    }
+
+    static PassRefPtr<ImmutableArray> create(const void** entries, size_t size, const ImmutableArrayCallbacks* callbacks)
+    {
+        return adoptRef(new ImmutableArray(entries, size, callbacks));
+    }
+    static PassRefPtr<ImmutableArray> adopt(void** entries, size_t size, const ImmutableArrayCallbacks* callbacks)
+    {
+        return adoptRef(new ImmutableArray(entries, size, callbacks, Adopt));
+    }
+    ~ImmutableArray();
+
+    const void* at(size_t i) { ASSERT(i < m_size); return m_entries[i]; }
+    size_t size() { return m_size; }
+
+private:
+    ImmutableArray();
+    ImmutableArray(const void** entries, size_t size, const ImmutableArrayCallbacks*);
+    enum AdoptTag { Adopt };
+    ImmutableArray(void** entries, size_t size, const ImmutableArrayCallbacks*, AdoptTag);
+
+    void** m_entries;
+    size_t m_size;
+    ImmutableArrayCallbacks m_callbacks;
+};
+
+} // namespace WebKit
+
+#endif // ImmutableArray_h