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diff --git a/Source/JavaScriptCore/wtf/SinglyLinkedList.h b/Source/JavaScriptCore/wtf/SinglyLinkedList.h
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+/*
+ * Copyright (C) 2011 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 SinglyLinkedList_h
+#define SinglyLinkedList_h
+
+namespace WTF {
+
+template <typename Node> class SinglyLinkedList {
+public:
+    SinglyLinkedList();
+    
+    bool isEmpty();
+
+    void push(Node*);
+    Node* pop();
+
+private:
+    Node* m_head;
+};
+
+template <typename Node> inline SinglyLinkedList<Node>::SinglyLinkedList()
+    : m_head(0)
+{
+}
+
+template <typename Node> inline bool SinglyLinkedList<Node>::isEmpty()
+{
+    return !m_head;
+}
+
+template <typename Node> inline void SinglyLinkedList<Node>::push(Node* node)
+{
+    ASSERT(node);
+    node->setNext(m_head);
+    m_head = node;
+}
+
+template <typename Node> inline Node* SinglyLinkedList<Node>::pop()
+{
+    Node* tmp = m_head;
+    m_head = m_head->next();
+    return tmp;
+}
+
+}
+
+using WTF::SinglyLinkedList;
+
+#endif