webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

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diff --git a/Source/JavaScriptCore/runtime/MapBase.h b/Source/JavaScriptCore/runtime/MapBase.h
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+/*
+ * Copyright (C) 2016 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. 
+ */
+
+#pragma once
+
+#include "HashMapImpl.h"
+#include "JSObject.h"
+
+namespace JSC {
+
+template <typename HashMapBucketType>
+class MapBase : public JSNonFinalObject {
+    typedef HashMapImpl<HashMapBucketType> HashMapImplType;
+    typedef JSNonFinalObject Base;
+public:
+
+    typedef HashMapBucketType BucketType;
+
+    ALWAYS_INLINE size_t size(ExecState*)
+    {
+        return m_map->size();
+    }
+
+    ALWAYS_INLINE bool has(ExecState* exec, JSValue key)
+    {
+        return m_map->has(exec, key);
+    }
+
+    ALWAYS_INLINE void clear(ExecState* exec)
+    {
+        m_map->clear(exec);
+    }
+
+    ALWAYS_INLINE bool remove(ExecState* exec, JSValue key)
+    {
+        return m_map->remove(exec, key);
+    }
+
+    ALWAYS_INLINE HashMapBucketType** findBucket(ExecState* exec, JSValue key, uint32_t hash)
+    {
+        return m_map->findBucket(exec, key, hash);
+    }
+
+    static ptrdiff_t offsetOfHashMapImpl()
+    {
+        return OBJECT_OFFSETOF(MapBase<HashMapBucketType>, m_map);
+    }
+
+    ALWAYS_INLINE HashMapImplType* impl() { return m_map.get(); }
+
+    void finishCreation(ExecState* exec, VM& vm)
+    {
+        Base::finishCreation(vm);
+        auto scope = DECLARE_THROW_SCOPE(vm);
+        HashMapImplType* impl = HashMapImplType::create(exec, vm);
+        RETURN_IF_EXCEPTION(scope, void());
+        m_map.set(vm, this, impl);
+    }
+
+protected:
+    MapBase(VM& vm, Structure* structure)
+        : Base(vm, structure)
+    {
+    }
+
+    static size_t estimatedSize(JSCell*);
+    static void visitChildren(JSCell*, SlotVisitor&);
+
+    WriteBarrier<HashMapImplType> m_map;
+};
+
+} // namespace JSC