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-/*
- * Copyright (C) 2006 Apple Computer, 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 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 JSClassRef_h
-#define JSClassRef_h
-
-#include "JSObjectRef.h"
-
-#include <runtime/JSObject.h>
-#include <runtime/Protect.h>
-#include <runtime/UString.h>
-#include <runtime/WeakGCPtr.h>
-#include <wtf/HashMap.h>
-#include <wtf/RefCounted.h>
-
-struct StaticValueEntry : FastAllocBase {
- StaticValueEntry(JSObjectGetPropertyCallback _getProperty, JSObjectSetPropertyCallback _setProperty, JSPropertyAttributes _attributes)
- : getProperty(_getProperty), setProperty(_setProperty), attributes(_attributes)
- {
- }
-
- JSObjectGetPropertyCallback getProperty;
- JSObjectSetPropertyCallback setProperty;
- JSPropertyAttributes attributes;
-};
-
-struct StaticFunctionEntry : FastAllocBase {
- StaticFunctionEntry(JSObjectCallAsFunctionCallback _callAsFunction, JSPropertyAttributes _attributes)
- : callAsFunction(_callAsFunction), attributes(_attributes)
- {
- }
-
- JSObjectCallAsFunctionCallback callAsFunction;
- JSPropertyAttributes attributes;
-};
-
-typedef HashMap<RefPtr<JSC::UString::Rep>, StaticValueEntry*> OpaqueJSClassStaticValuesTable;
-typedef HashMap<RefPtr<JSC::UString::Rep>, StaticFunctionEntry*> OpaqueJSClassStaticFunctionsTable;
-
-struct OpaqueJSClass;
-
-// An OpaqueJSClass (JSClass) is created without a context, so it can be used with any context, even across context groups.
-// This structure holds data members that vary across context groups.
-struct OpaqueJSClassContextData : Noncopyable {
- OpaqueJSClassContextData(OpaqueJSClass*);
- ~OpaqueJSClassContextData();
-
- // It is necessary to keep OpaqueJSClass alive because of the following rare scenario:
- // 1. A class is created and used, so its context data is stored in JSGlobalData hash map.
- // 2. The class is released, and when all JS objects that use it are collected, OpaqueJSClass
- // is deleted (that's the part prevented by this RefPtr).
- // 3. Another class is created at the same address.
- // 4. When it is used, the old context data is found in JSGlobalData and used.
- RefPtr<OpaqueJSClass> m_class;
-
- OpaqueJSClassStaticValuesTable* staticValues;
- OpaqueJSClassStaticFunctionsTable* staticFunctions;
- JSC::WeakGCPtr<JSC::JSObject> cachedPrototype;
-};
-
-struct OpaqueJSClass : public ThreadSafeShared<OpaqueJSClass> {
- static PassRefPtr<OpaqueJSClass> create(const JSClassDefinition*);
- static PassRefPtr<OpaqueJSClass> createNoAutomaticPrototype(const JSClassDefinition*);
- ~OpaqueJSClass();
-
- JSC::UString className();
- OpaqueJSClassStaticValuesTable* staticValues(JSC::ExecState*);
- OpaqueJSClassStaticFunctionsTable* staticFunctions(JSC::ExecState*);
- JSC::JSObject* prototype(JSC::ExecState*);
-
- OpaqueJSClass* parentClass;
- OpaqueJSClass* prototypeClass;
-
- JSObjectInitializeCallback initialize;
- JSObjectFinalizeCallback finalize;
- JSObjectHasPropertyCallback hasProperty;
- JSObjectGetPropertyCallback getProperty;
- JSObjectSetPropertyCallback setProperty;
- JSObjectDeletePropertyCallback deleteProperty;
- JSObjectGetPropertyNamesCallback getPropertyNames;
- JSObjectCallAsFunctionCallback callAsFunction;
- JSObjectCallAsConstructorCallback callAsConstructor;
- JSObjectHasInstanceCallback hasInstance;
- JSObjectConvertToTypeCallback convertToType;
-
-private:
- friend struct OpaqueJSClassContextData;
-
- OpaqueJSClass();
- OpaqueJSClass(const OpaqueJSClass&);
- OpaqueJSClass(const JSClassDefinition*, OpaqueJSClass* protoClass);
-
- OpaqueJSClassContextData& contextData(JSC::ExecState*);
-
- // UStrings in these data members should not be put into any IdentifierTable.
- JSC::UString m_className;
- OpaqueJSClassStaticValuesTable* m_staticValues;
- OpaqueJSClassStaticFunctionsTable* m_staticFunctions;
-};
-
-#endif // JSClassRef_h