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diff --git a/Source/JavaScriptCore/interpreter/CachedCall.h b/Source/JavaScriptCore/interpreter/CachedCall.h
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+++ b/Source/JavaScriptCore/interpreter/CachedCall.h
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+/*
+ * 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 CachedCall_h
+#define CachedCall_h
+
+#include "CallFrameClosure.h"
+#include "JSFunction.h"
+#include "JSGlobalObject.h"
+#include "Interpreter.h"
+
+namespace JSC {
+    class CachedCall : public Noncopyable {
+    public:
+        CachedCall(CallFrame* callFrame, JSFunction* function, int argCount)
+            : m_valid(false)
+            , m_interpreter(callFrame->interpreter())
+            , m_globalObjectScope(callFrame, function->scope().globalObject())
+        {
+            ASSERT(!function->isHostFunction());
+            m_closure = m_interpreter->prepareForRepeatCall(function->jsExecutable(), callFrame, function, argCount, function->scope().node());
+            m_valid = !callFrame->hadException();
+        }
+        
+        JSValue call()
+        { 
+            ASSERT(m_valid);
+            return m_interpreter->execute(m_closure);
+        }
+        void setThis(JSValue v) { m_closure.setArgument(0, v); }
+        void setArgument(int n, JSValue v) { m_closure.setArgument(n + 1, v); }
+
+        CallFrame* newCallFrame(ExecState* exec)
+        {
+            CallFrame* callFrame = m_closure.newCallFrame;
+            callFrame->setScopeChain(exec->scopeChain());
+            return callFrame;
+        }
+
+        ~CachedCall()
+        {
+            if (m_valid)
+                m_interpreter->endRepeatCall(m_closure);
+        }
+        
+    private:
+        bool m_valid;
+        Interpreter* m_interpreter;
+        DynamicGlobalObjectScope m_globalObjectScope;
+        CallFrameClosure m_closure;
+    };
+}
+
+#endif