--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/runtime/JSByteArray.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2009 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. ``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
+ * 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 JSByteArray_h
+#define JSByteArray_h
+
+#include "JSObject.h"
+
+#include <wtf/ByteArray.h>
+
+namespace JSC {
+
+    class JSByteArray : public JSObject {
+        friend class JSGlobalData;
+    public:
+        bool canAccessIndex(unsigned i) { return i < m_storage->length(); }
+        JSValue getIndex(ExecState* exec, unsigned i)
+        {
+            ASSERT(canAccessIndex(i));
+            return jsNumber(exec, m_storage->data()[i]);
+        }
+
+        void setIndex(unsigned i, int value)
+        {
+            ASSERT(canAccessIndex(i));
+            if (value & ~0xFF) {
+                if (value < 0)
+                    value = 0;
+                else
+                    value = 255;
+            }
+            m_storage->data()[i] = static_cast<unsigned char>(value);
+        }
+        
+        void setIndex(unsigned i, double value)
+        {
+            ASSERT(canAccessIndex(i));
+            if (!(value > 0)) // Clamp NaN to 0
+                value = 0;
+            else if (value > 255)
+                value = 255;
+            m_storage->data()[i] = static_cast<unsigned char>(value + 0.5);
+        }
+        
+        void setIndex(ExecState* exec, unsigned i, JSValue value)
+        {
+            double byteValue = value.toNumber(exec);
+            if (exec->hadException())
+                return;
+            if (canAccessIndex(i))
+                setIndex(i, byteValue);
+        }
+
+        JSByteArray(ExecState* exec, NonNullPassRefPtr<Structure>, WTF::ByteArray* storage, const JSC::ClassInfo* = &s_defaultInfo);
+        static PassRefPtr<Structure> createStructure(JSValue prototype);
+        
+        virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertySlot&);
+        virtual bool getOwnPropertySlot(JSC::ExecState*, unsigned propertyName, JSC::PropertySlot&);
+        virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&);
+        virtual void put(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::JSValue, JSC::PutPropertySlot&);
+        virtual void put(JSC::ExecState*, unsigned propertyName, JSC::JSValue);
+
+        virtual void getOwnPropertyNames(JSC::ExecState*, JSC::PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
+
+        virtual const ClassInfo* classInfo() const { return m_classInfo; }
+        static const ClassInfo s_defaultInfo;
+        
+        size_t length() const { return m_storage->length(); }
+
+        WTF::ByteArray* storage() const { return m_storage.get(); }
+
+#if !ASSERT_DISABLED
+        virtual ~JSByteArray();
+#endif
+
+    protected:
+        static const unsigned StructureFlags = OverridesGetOwnPropertySlot | OverridesGetPropertyNames | JSObject::StructureFlags;
+
+    private:
+        enum VPtrStealingHackType { VPtrStealingHack };
+        JSByteArray(VPtrStealingHackType) 
+            : JSObject(createStructure(jsNull()))
+            , m_classInfo(0)
+        {
+        }
+
+        RefPtr<WTF::ByteArray> m_storage;
+        const ClassInfo* m_classInfo;
+    };
+    
+    JSByteArray* asByteArray(JSValue value);
+    inline JSByteArray* asByteArray(JSValue value)
+    {
+        return static_cast<JSByteArray*>(asCell(value));
+    }
+
+    inline bool isJSByteArray(JSGlobalData* globalData, JSValue v) { return v.isCell() && v.asCell()->vptr() == globalData->jsByteArrayVPtr; }
+
+} // namespace JSC
+
+#endif // JSByteArray_h