2 * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
3 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
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9 * notice, this list of conditions and the following disclaimer.
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17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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27 #ifndef JSCallbackObject_h
28 #define JSCallbackObject_h
30 #include "JSObjectRef.h"
31 #include "JSValueRef.h"
33 #include <wtf/PassOwnPtr.h>
37 struct JSCallbackObjectData : WeakHandleOwner {
38 JSCallbackObjectData(void* privateData, JSClassRef jsClass)
39 : privateData(privateData)
42 JSClassRetain(jsClass);
45 ~JSCallbackObjectData()
47 JSClassRelease(jsClass);
50 JSValue getPrivateProperty(const Identifier& propertyName) const
52 if (!m_privateProperties)
54 return m_privateProperties->getPrivateProperty(propertyName);
57 void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
59 if (!m_privateProperties)
60 m_privateProperties = adoptPtr(new JSPrivatePropertyMap);
61 m_privateProperties->setPrivateProperty(globalData, owner, propertyName, value);
64 void deletePrivateProperty(const Identifier& propertyName)
66 if (!m_privateProperties)
68 m_privateProperties->deletePrivateProperty(propertyName);
71 void visitChildren(SlotVisitor& visitor)
73 if (!m_privateProperties)
75 m_privateProperties->visitChildren(visitor);
80 struct JSPrivatePropertyMap {
81 JSValue getPrivateProperty(const Identifier& propertyName) const
83 PrivatePropertyMap::const_iterator location = m_propertyMap.find(propertyName.impl());
84 if (location == m_propertyMap.end())
86 return location->second.get();
89 void setPrivateProperty(JSGlobalData& globalData, JSCell* owner, const Identifier& propertyName, JSValue value)
91 WriteBarrier<Unknown> empty;
92 m_propertyMap.add(propertyName.impl(), empty).first->second.set(globalData, owner, value);
95 void deletePrivateProperty(const Identifier& propertyName)
97 m_propertyMap.remove(propertyName.impl());
100 void visitChildren(SlotVisitor& visitor)
102 for (PrivatePropertyMap::iterator ptr = m_propertyMap.begin(); ptr != m_propertyMap.end(); ++ptr) {
104 visitor.append(&ptr->second);
109 typedef HashMap<RefPtr<StringImpl>, WriteBarrier<Unknown>, IdentifierRepHash> PrivatePropertyMap;
110 PrivatePropertyMap m_propertyMap;
112 OwnPtr<JSPrivatePropertyMap> m_privateProperties;
113 virtual void finalize(Handle<Unknown>, void*);
117 template <class Parent>
118 class JSCallbackObject : public Parent {
120 JSCallbackObject(ExecState*, Structure*, JSClassRef, void* data);
121 JSCallbackObject(JSGlobalData&, JSClassRef, Structure*);
122 // We'd like to use the placement version of operator new defined in JSCell, but
123 // we can't because Parent is a template argument, so we just duplicate the same
124 // functionality here.
125 void* operator new(size_t, void* ptr) { return ptr; }
127 void finishCreation(ExecState*);
128 void finishCreation(JSGlobalData&);
133 static JSCallbackObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSClassRef classRef, void* data)
135 ASSERT_UNUSED(globalObject, !structure->globalObject() || structure->globalObject() == globalObject);
136 JSCallbackObject* callbackObject = new (allocateCell<JSCallbackObject>(*exec->heap())) JSCallbackObject(exec, structure, classRef, data);
137 callbackObject->finishCreation(exec);
138 return callbackObject;
140 static JSCallbackObject* create(JSGlobalData& globalData, JSClassRef classRef, Structure* structure)
142 JSCallbackObject* callbackObject = new (allocateCell<JSCallbackObject>(globalData.heap)) JSCallbackObject(globalData, classRef, structure);
143 callbackObject->finishCreation(globalData);
144 return callbackObject;
147 void setPrivate(void* data);
150 static const ClassInfo s_info;
152 JSClassRef classRef() const { return m_callbackObjectData->jsClass; }
153 bool inherits(JSClassRef) const;
155 static Structure* createStructure(JSGlobalData&, JSGlobalObject*, JSValue);
157 JSValue getPrivateProperty(const Identifier& propertyName) const
159 return m_callbackObjectData->getPrivateProperty(propertyName);
162 void setPrivateProperty(JSGlobalData& globalData, const Identifier& propertyName, JSValue value)
164 m_callbackObjectData->setPrivateProperty(globalData, this, propertyName, value);
167 void deletePrivateProperty(const Identifier& propertyName)
169 m_callbackObjectData->deletePrivateProperty(propertyName);
172 using Parent::methodTable;
175 static const unsigned StructureFlags = ProhibitsPropertyCaching | OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | Parent::StructureFlags;
178 static UString className(const JSObject*);
180 static bool getOwnPropertySlot(JSCell*, ExecState*, const Identifier&, PropertySlot&);
181 static bool getOwnPropertyDescriptor(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&);
183 static void put(JSCell*, ExecState*, const Identifier&, JSValue, PutPropertySlot&);
185 static bool deleteProperty(JSCell*, ExecState*, const Identifier&);
186 static bool deletePropertyByIndex(JSCell*, ExecState*, unsigned);
188 static bool hasInstance(JSObject*, ExecState*, JSValue, JSValue proto);
190 static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
192 static ConstructType getConstructData(JSCell*, ConstructData&);
193 static CallType getCallData(JSCell*, CallData&);
195 static void visitChildren(JSCell* cell, SlotVisitor& visitor)
197 JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell);
198 ASSERT_GC_OBJECT_INHERITS((static_cast<Parent*>(thisObject)), &JSCallbackObject<Parent>::s_info);
199 COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
200 ASSERT(thisObject->Parent::structure()->typeInfo().overridesVisitChildren());
201 Parent::visitChildren(thisObject, visitor);
202 thisObject->m_callbackObjectData->visitChildren(visitor);
205 void init(ExecState*);
207 static JSCallbackObject* asCallbackObject(JSValue);
209 static EncodedJSValue JSC_HOST_CALL call(ExecState*);
210 static EncodedJSValue JSC_HOST_CALL construct(ExecState*);
212 JSValue getStaticValue(ExecState*, const Identifier&);
213 static JSValue staticFunctionGetter(ExecState*, JSValue, const Identifier&);
214 static JSValue callbackGetter(ExecState*, JSValue, const Identifier&);
216 OwnPtr<JSCallbackObjectData> m_callbackObjectData;
221 // include the actual template class implementation
222 #include "JSCallbackObjectFunctions.h"
224 #endif // JSCallbackObject_h