Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 222 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/API/JSCallbackObject.h b/Source/JavaScriptCore/API/JSCallbackObject.h
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+++ b/Source/JavaScriptCore/API/JSCallbackObject.h
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+/*
+ * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
+ *
+ * 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 COMPUTER, 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 COMPUTER, 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 JSCallbackObject_h
+#define JSCallbackObject_h
+
+#include "JSObjectRef.h"
+#include "JSValueRef.h"
+#include "JSObject.h"
+#include <wtf/PassOwnPtr.h>
+
+namespace JSC {
+
+struct JSCallbackObjectData : WeakHandleOwner {
+    JSCallbackObjectData(void* privateData, JSClassRef jsClass)
+        : privateData(privateData)
+        , jsClass(jsClass)
+    {
+        JSClassRetain(jsClass);
+    }
+    
+    ~JSCallbackObjectData()
+    {
+        JSClassRelease(jsClass);
+    }
+    
+    JSValue getPrivateProperty(const Identifier& propertyName) const
+    {
+        if (!m_privateProperties)
+            return JSValue();
+        return m_privateProperties->getPrivateProperty(propertyName);
+    }
+    
+    void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
+    {
+        if (!m_privateProperties)
+            m_privateProperties = adoptPtr(new JSPrivatePropertyMap);
+        m_privateProperties->setPrivateProperty(globalData, owner, propertyName, value);
+    }
+    
+    void deletePrivateProperty(const Identifier& propertyName)
+    {
+        if (!m_privateProperties)
+            return;
+        m_privateProperties->deletePrivateProperty(propertyName);
+    }
+
+    void visitChildren(SlotVisitor& visitor)
+    {
+        if (!m_privateProperties)
+            return;
+        m_privateProperties->visitChildren(visitor);
+    }
+
+    void* privateData;
+    JSClassRef jsClass;
+    struct JSPrivatePropertyMap {
+        JSValue getPrivateProperty(const Identifier& propertyName) const
+        {
+            PrivatePropertyMap::const_iterator location = m_propertyMap.find(propertyName.impl());
+            if (location == m_propertyMap.end())
+                return JSValue();
+            return location->second.get();
+        }
+        
+        void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
+        {
+            WriteBarrier<Unknown> empty;
+            m_propertyMap.add(propertyName.impl(), empty).first->second.set(globalData, owner, value);
+        }
+        
+        void deletePrivateProperty(const Identifier& propertyName)
+        {
+            m_propertyMap.remove(propertyName.impl());
+        }
+
+        void visitChildren(SlotVisitor& visitor)
+        {
+            for (PrivatePropertyMap::iterator ptr = m_propertyMap.begin(); ptr != m_propertyMap.end(); ++ptr) {
+                if (ptr->second)
+                    visitor.append(&ptr->second);
+            }
+        }
+
+    private:
+        typedef HashMap<RefPtr<StringImpl>, WriteBarrier<Unknown>, IdentifierRepHash> PrivatePropertyMap;
+        PrivatePropertyMap m_propertyMap;
+    };
+    OwnPtr<JSPrivatePropertyMap> m_privateProperties;
+    virtual void finalize(Handle<Unknown>, void*);
+};
+
+    
+template <class Parent>
+class JSCallbackObject : public Parent {
+protected:
+    JSCallbackObject(ExecState*, Structure*, JSClassRef, void* data);
+    JSCallbackObject(JSGlobalData&, JSClassRef, Structure*);
+
+    void finishCreation(ExecState*);
+    void finishCreation(JSGlobalData&);
+
+public:
+    typedef Parent Base;
+
+    static JSCallbackObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSClassRef classRef, void* data)
+    {
+        ASSERT_UNUSED(globalObject, !structure->globalObject() || structure->globalObject() == globalObject);
+        JSCallbackObject* callbackObject = new (NotNull, allocateCell<JSCallbackObject>(*exec->heap())) JSCallbackObject(exec, structure, classRef, data);
+        callbackObject->finishCreation(exec);
+        return callbackObject;
+    }
+    static JSCallbackObject* create(JSGlobalData& globalData, JSClassRef classRef, Structure* structure)
+    {
+        JSCallbackObject* callbackObject = new (NotNull, allocateCell<JSCallbackObject>(globalData.heap)) JSCallbackObject(globalData, classRef, structure);
+        callbackObject->finishCreation(globalData);
+        return callbackObject;
+    }
+
+    void setPrivate(void* data);
+    void* getPrivate();
+
+    static const ClassInfo s_info;
+
+    JSClassRef classRef() const { return m_callbackObjectData->jsClass; }
+    bool inherits(JSClassRef) const;
+
+    static Structure* createStructure(JSGlobalData&, JSGlobalObject*, JSValue);
+    
+    JSValue getPrivateProperty(const Identifier& propertyName) const
+    {
+        return m_callbackObjectData->getPrivateProperty(propertyName);
+    }
+    
+    void setPrivateProperty(JSGlobalData& globalData, const Identifier& propertyName, JSValue value)
+    {
+        m_callbackObjectData->setPrivateProperty(globalData, this, propertyName, value);
+    }
+    
+    void deletePrivateProperty(const Identifier& propertyName)
+    {
+        m_callbackObjectData->deletePrivateProperty(propertyName);
+    }
+
+    using Parent::methodTable;
+
+protected:
+    static const unsigned StructureFlags = ProhibitsPropertyCaching | OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | Parent::StructureFlags;
+
+private:
+    static UString className(const JSObject*);
+
+    static void destroy(JSCell*);
+
+    static bool getOwnPropertySlot(JSCell*, ExecState*, const Identifier&, PropertySlot&);
+    static bool getOwnPropertyDescriptor(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&);
+    
+    static void put(JSCell*, ExecState*, const Identifier&, JSValue, PutPropertySlot&);
+
+    static bool deleteProperty(JSCell*, ExecState*, const Identifier&);
+    static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned);
+
+    static bool hasInstance(JSObject*, ExecState*, JSValue, JSValue proto);
+
+    static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
+
+    static ConstructType getConstructData(JSCell*, ConstructData&);
+    static CallType getCallData(JSCell*, CallData&);
+
+    static void visitChildren(JSCell* cell, SlotVisitor& visitor)
+    {
+        JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
+        ASSERT_GC_OBJECT_INHERITS((static_cast<Parent*>(thisObject)), &JSCallbackObject<Parent>::s_info);
+        COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
+        ASSERT(thisObject->Parent::structure()->typeInfo().overridesVisitChildren());
+        Parent::visitChildren(thisObject, visitor);
+        thisObject->m_callbackObjectData->visitChildren(visitor);
+    }
+
+    void init(ExecState*);
+ 
+    static JSCallbackObject* asCallbackObject(JSValue);
+ 
+    static EncodedJSValue JSC_HOST_CALL call(ExecState*);
+    static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
+   
+    JSValue getStaticValue(ExecState*, const Identifier&);
+    static JSValue staticFunctionGetter(ExecState*, JSValue, const Identifier&);
+    static JSValue callbackGetter(ExecState*, JSValue, const Identifier&);
+
+    OwnPtr<JSCallbackObjectData> m_callbackObjectData;
+};
+
+} // namespace JSC
+
+// include the actual template class implementation
+#include "JSCallbackObjectFunctions.h"
+
+#endif // JSCallbackObject_h