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+/*
+ * Copyright (C) 2015 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 AdaptiveInferredPropertyValueWatchpointBase_h
+#define AdaptiveInferredPropertyValueWatchpointBase_h
+
+#include "ObjectPropertyCondition.h"
+#include "Watchpoint.h"
+#include <wtf/FastMalloc.h>
+#include <wtf/Noncopyable.h>
+
+namespace JSC {
+
+class AdaptiveInferredPropertyValueWatchpointBase {
+    WTF_MAKE_NONCOPYABLE(AdaptiveInferredPropertyValueWatchpointBase);
+    WTF_MAKE_FAST_ALLOCATED;
+
+public:
+    AdaptiveInferredPropertyValueWatchpointBase(const ObjectPropertyCondition&);
+
+    const ObjectPropertyCondition& key() const { return m_key; }
+
+    void install();
+
+    virtual ~AdaptiveInferredPropertyValueWatchpointBase() = default;
+
+protected:
+    virtual void handleFire(const FireDetail&) = 0;
+
+private:
+    class StructureWatchpoint : public Watchpoint {
+    public:
+        StructureWatchpoint() { }
+    protected:
+        virtual void fireInternal(const FireDetail&) override;
+    };
+    class PropertyWatchpoint : public Watchpoint {
+    public:
+        PropertyWatchpoint() { }
+    protected:
+        virtual void fireInternal(const FireDetail&) override;
+    };
+
+    void fire(const FireDetail&);
+
+    ObjectPropertyCondition m_key;
+    StructureWatchpoint m_structureWatchpoint;
+    PropertyWatchpoint m_propertyWatchpoint;
+};
+
+} // namespace JSC
+
+#endif /* AdaptiveInferredPropertyValueWatchpointBase_h */