Long live Qt!

1 files changed, 213 insertions, 0 deletions

diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/PropertySlot.h b/src/3rdparty/webkit/JavaScriptCore/runtime/PropertySlot.h
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+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/PropertySlot.h
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+/*
+ *  Copyright (C) 2005, 2007, 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef PropertySlot_h
+#define PropertySlot_h
+
+#include "Identifier.h"
+#include "JSValue.h"
+#include "JSImmediate.h"
+#include "Register.h"
+#include <wtf/Assertions.h>
+#include <wtf/NotFound.h>
+
+namespace JSC {
+
+    class ExecState;
+    class JSObject;
+
+#define JSC_VALUE_SLOT_MARKER 0
+#define JSC_REGISTER_SLOT_MARKER reinterpret_cast<GetValueFunc>(1)
+
+    class PropertySlot {
+    public:
+        PropertySlot()
+            : m_offset(WTF::notFound)
+        {
+            clearBase();
+            clearValue();
+        }
+
+        explicit PropertySlot(const JSValuePtr base)
+            : m_slotBase(base)
+            , m_offset(WTF::notFound)
+        {
+            clearValue();
+        }
+
+        typedef JSValuePtr (*GetValueFunc)(ExecState*, const Identifier&, const PropertySlot&);
+
+        JSValuePtr getValue(ExecState* exec, const Identifier& propertyName) const
+        {
+            if (m_getValue == JSC_VALUE_SLOT_MARKER)
+                return *m_data.valueSlot;
+            if (m_getValue == JSC_REGISTER_SLOT_MARKER)
+                return (*m_data.registerSlot).jsValue(exec);
+            return m_getValue(exec, propertyName, *this);
+        }
+
+        JSValuePtr getValue(ExecState* exec, unsigned propertyName) const
+        {
+            if (m_getValue == JSC_VALUE_SLOT_MARKER)
+                return *m_data.valueSlot;
+            if (m_getValue == JSC_REGISTER_SLOT_MARKER)
+                return (*m_data.registerSlot).jsValue(exec);
+            return m_getValue(exec, Identifier::from(exec, propertyName), *this);
+        }
+
+        bool isCacheable() const { return m_offset != WTF::notFound; }
+        size_t cachedOffset() const
+        {
+            ASSERT(isCacheable());
+            return m_offset;
+        }
+
+        void putValue(JSValuePtr value)
+        { 
+            if (m_getValue == JSC_VALUE_SLOT_MARKER) {
+                *m_data.valueSlot = value;
+                return;
+            }
+            ASSERT(m_getValue == JSC_REGISTER_SLOT_MARKER);
+            *m_data.registerSlot = JSValuePtr(value);
+        }
+
+        void setValueSlot(JSValuePtr* valueSlot) 
+        {
+            ASSERT(valueSlot);
+            m_getValue = JSC_VALUE_SLOT_MARKER;
+            clearBase();
+            m_data.valueSlot = valueSlot;
+        }
+        
+        void setValueSlot(JSValuePtr slotBase, JSValuePtr* valueSlot)
+        {
+            ASSERT(valueSlot);
+            m_getValue = JSC_VALUE_SLOT_MARKER;
+            m_slotBase = slotBase;
+            m_data.valueSlot = valueSlot;
+        }
+        
+        void setValueSlot(JSValuePtr slotBase, JSValuePtr* valueSlot, size_t offset)
+        {
+            ASSERT(valueSlot);
+            m_getValue = JSC_VALUE_SLOT_MARKER;
+            m_slotBase = slotBase;
+            m_data.valueSlot = valueSlot;
+            m_offset = offset;
+        }
+        
+        void setValue(JSValuePtr value)
+        {
+            ASSERT(value);
+            m_getValue = JSC_VALUE_SLOT_MARKER;
+            clearBase();
+            m_value = value;
+            m_data.valueSlot = &m_value;
+        }
+
+        void setRegisterSlot(Register* registerSlot)
+        {
+            ASSERT(registerSlot);
+            m_getValue = JSC_REGISTER_SLOT_MARKER;
+            clearBase();
+            m_data.registerSlot = registerSlot;
+        }
+
+        void setCustom(JSValuePtr slotBase, GetValueFunc getValue)
+        {
+            ASSERT(slotBase);
+            ASSERT(getValue);
+            m_getValue = getValue;
+            m_slotBase = slotBase;
+        }
+
+        void setCustomIndex(JSValuePtr slotBase, unsigned index, GetValueFunc getValue)
+        {
+            ASSERT(slotBase);
+            ASSERT(getValue);
+            m_getValue = getValue;
+            m_slotBase = slotBase;
+            m_data.index = index;
+        }
+        
+        void setGetterSlot(JSObject* getterFunc)
+        {
+            ASSERT(getterFunc);
+            m_getValue = functionGetter;
+            m_data.getterFunc = getterFunc;
+        }
+        
+        void setUndefined()
+        {
+            clearBase();
+            setValue(jsUndefined());
+        }
+
+        JSValuePtr slotBase() const
+        {
+            ASSERT(m_slotBase);
+            return m_slotBase;
+        }
+
+        void setBase(JSValuePtr base)
+        {
+            ASSERT(m_slotBase);
+            ASSERT(base);
+            m_slotBase = base;
+        }
+
+        void clearBase()
+        {
+#ifndef NDEBUG
+            m_slotBase = noValue();
+#endif
+        }
+
+        void clearValue()
+        {
+#ifndef NDEBUG
+            m_value = noValue();
+#endif
+        }
+
+        unsigned index() const { return m_data.index; }
+
+    private:
+        static JSValuePtr functionGetter(ExecState*, const Identifier&, const PropertySlot&);
+
+        GetValueFunc m_getValue;
+        
+        JSValuePtr m_slotBase;
+        union {
+            JSObject* getterFunc;
+            JSValuePtr* valueSlot;
+            Register* registerSlot;
+            unsigned index;
+        } m_data;
+
+        JSValuePtr m_value;
+
+        size_t m_offset;
+    };
+
+} // namespace JSC
+
+#endif // PropertySlot_h