229 lines
11 KiB
C++
229 lines
11 KiB
C++
/*
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* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
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* Copyright (C) 2003-2006, 2008-2009, 2013, 2016 Apple Inc. All rights reserved.
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* Copyright (C) 2007 Samuel Weinig <sam@webkit.org>
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* Copyright (C) 2009 Google, Inc. All rights reserved.
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* Copyright (C) 2012 Ericsson AB. All rights reserved.
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* Copyright (C) 2013 Michael Pruett <michael@68k.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include "DOMWrapperWorld.h"
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#include "JSDOMGlobalObject.h"
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#include "JSDOMWrapper.h"
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#include "ScriptWrappable.h"
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#include "ScriptWrappableInlines.h"
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#include "WebCoreTypedArrayController.h"
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#include <JavaScriptCore/JSArrayBuffer.h>
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#include <JavaScriptCore/TypedArrayInlines.h>
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#include <JavaScriptCore/Weak.h>
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#include <JavaScriptCore/WeakInlines.h>
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namespace WebCore {
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WEBCORE_EXPORT JSC::Structure* getCachedDOMStructure(const JSDOMGlobalObject&, const JSC::ClassInfo*);
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WEBCORE_EXPORT JSC::Structure* cacheDOMStructure(JSDOMGlobalObject&, JSC::Structure*, const JSC::ClassInfo*);
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template<typename WrapperClass> JSC::Structure* getDOMStructure(JSC::VM&, JSDOMGlobalObject&);
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template<typename WrapperClass> JSC::Structure* deprecatedGetDOMStructure(JSC::JSGlobalObject*);
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template<typename WrapperClass> JSC::JSObject* getDOMPrototype(JSC::VM&, JSC::JSGlobalObject*);
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JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld&, JSC::ArrayBuffer*);
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void* wrapperKey(JSC::ArrayBuffer*);
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JSDOMObject* getInlineCachedWrapper(DOMWrapperWorld&, void*);
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JSDOMObject* getInlineCachedWrapper(DOMWrapperWorld&, ScriptWrappable*);
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JSC::JSArrayBuffer* getInlineCachedWrapper(DOMWrapperWorld&, JSC::ArrayBuffer*);
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bool setInlineCachedWrapper(DOMWrapperWorld&, void*, JSDOMObject*, JSC::WeakHandleOwner*);
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bool setInlineCachedWrapper(DOMWrapperWorld&, ScriptWrappable*, JSDOMObject* wrapper, JSC::WeakHandleOwner* wrapperOwner);
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bool setInlineCachedWrapper(DOMWrapperWorld&, JSC::ArrayBuffer*, JSC::JSArrayBuffer* wrapper, JSC::WeakHandleOwner* wrapperOwner);
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bool clearInlineCachedWrapper(DOMWrapperWorld&, void*, JSDOMObject*);
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bool clearInlineCachedWrapper(DOMWrapperWorld&, ScriptWrappable*, JSDOMObject* wrapper);
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bool clearInlineCachedWrapper(DOMWrapperWorld&, JSC::ArrayBuffer*, JSC::JSArrayBuffer* wrapper);
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template<typename DOMClass> JSC::JSObject* getOrCreateWrapper(DOMWrapperWorld&, DOMClass&);
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template<typename DOMClass> JSC::JSObject* getCachedWrapper(DOMWrapperWorld&, DOMClass&);
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template<typename DOMClass> inline JSC::JSObject* getCachedWrapper(DOMWrapperWorld& world, Ref<DOMClass>& object) { return getCachedWrapper(world, object.get()); }
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template<typename DOMClass, typename WrapperClass> void cacheWrapper(DOMWrapperWorld&, DOMClass*, WrapperClass*);
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template<typename DOMClass, typename WrapperClass> void uncacheWrapper(DOMWrapperWorld&, DOMClass*, WrapperClass*);
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template<typename DOMClass, typename T> auto createWrapper(JSDOMGlobalObject*, Ref<T>&&) -> typename std::enable_if<std::is_same<DOMClass, T>::value, typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass*>::type;
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template<typename DOMClass, typename T> auto createWrapper(JSDOMGlobalObject*, Ref<T>&&) -> typename std::enable_if<!std::is_same<DOMClass, T>::value, typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass*>::type;
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template<typename DOMClass> JSC::JSValue wrap(JSC::JSGlobalObject*, DOMWrapperWorld&, DOMClass&);
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template<typename DOMClass> JSC::JSValue wrap(JSC::JSGlobalObject*, JSDOMGlobalObject*, DOMClass&);
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// Inline functions and template definitions.
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inline JSDOMGlobalObject* deprecatedGlobalObjectForPrototype(JSC::JSGlobalObject* lexicalGlobalObject)
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{
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// FIXME: Callers to this function should be using the global object
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// from which the object is being created, instead of assuming the lexical one.
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// e.g. subframe.document.body should use the subframe's global object, not the lexical one.
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return JSC::jsCast<JSDOMGlobalObject*>(lexicalGlobalObject);
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}
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template<typename WrapperClass> inline JSC::Structure* getDOMStructure(JSC::VM& vm, JSDOMGlobalObject& globalObject)
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{
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if (JSC::Structure* structure = getCachedDOMStructure(globalObject, WrapperClass::info()))
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return structure;
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return cacheDOMStructure(globalObject, WrapperClass::createStructure(vm, &globalObject, WrapperClass::createPrototype(vm, globalObject)), WrapperClass::info());
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}
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template<typename WrapperClass> inline JSC::Structure* deprecatedGetDOMStructure(JSC::JSGlobalObject* lexicalGlobalObject)
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{
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// FIXME: This function is wrong. It uses the wrong global object for creating the prototype structure.
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return getDOMStructure<WrapperClass>(JSC::getVM(lexicalGlobalObject), *deprecatedGlobalObjectForPrototype(lexicalGlobalObject));
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}
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template<typename WrapperClass> inline JSC::JSObject* getDOMPrototype(JSC::VM& vm, JSDOMGlobalObject& globalObject)
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{
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return JSC::jsCast<JSC::JSObject*>(asObject(getDOMStructure<WrapperClass>(vm, globalObject)->storedPrototype()));
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}
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inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld& world, JSC::ArrayBuffer*)
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{
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return static_cast<WebCoreTypedArrayController*>(world.vm().m_typedArrayController.get())->wrapperOwner();
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}
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inline void* wrapperKey(JSC::ArrayBuffer* domObject)
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{
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return domObject;
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}
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inline JSDOMObject* getInlineCachedWrapper(DOMWrapperWorld&, void*) { return nullptr; }
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inline bool setInlineCachedWrapper(DOMWrapperWorld&, void*, JSDOMObject*, JSC::WeakHandleOwner*) { return false; }
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inline bool clearInlineCachedWrapper(DOMWrapperWorld&, void*, JSDOMObject*) { return false; }
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inline JSDOMObject* getInlineCachedWrapper(DOMWrapperWorld& world, ScriptWrappable* domObject)
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{
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if (!world.isNormal())
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return nullptr;
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return domObject->wrapper();
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}
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inline JSC::JSArrayBuffer* getInlineCachedWrapper(DOMWrapperWorld& world, JSC::ArrayBuffer* buffer)
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{
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if (!world.isNormal())
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return nullptr;
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return buffer->m_wrapper.get();
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}
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inline bool setInlineCachedWrapper(DOMWrapperWorld& world, ScriptWrappable* domObject, JSDOMObject* wrapper, JSC::WeakHandleOwner* wrapperOwner)
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{
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if (!world.isNormal())
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return false;
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domObject->setWrapper(wrapper, wrapperOwner, &world);
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return true;
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}
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inline bool setInlineCachedWrapper(DOMWrapperWorld& world, JSC::ArrayBuffer* domObject, JSC::JSArrayBuffer* wrapper, JSC::WeakHandleOwner* wrapperOwner)
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{
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if (!world.isNormal())
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return false;
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domObject->m_wrapper = JSC::Weak<JSC::JSArrayBuffer>(wrapper, wrapperOwner, &world);
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return true;
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}
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inline bool clearInlineCachedWrapper(DOMWrapperWorld& world, ScriptWrappable* domObject, JSDOMObject* wrapper)
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{
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if (!world.isNormal())
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return false;
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domObject->clearWrapper(wrapper);
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return true;
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}
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inline bool clearInlineCachedWrapper(DOMWrapperWorld& world, JSC::ArrayBuffer* domObject, JSC::JSArrayBuffer* wrapper)
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{
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if (!world.isNormal())
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return false;
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weakClear(domObject->m_wrapper, wrapper);
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return true;
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}
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template<typename DOMClass> inline JSC::JSObject* getCachedWrapper(DOMWrapperWorld& world, DOMClass& domObject)
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{
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if (auto* wrapper = getInlineCachedWrapper(world, &domObject))
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return wrapper;
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return world.wrappers().get(wrapperKey(&domObject));
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}
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template<typename DOMClass, typename WrapperClass> inline void cacheWrapper(DOMWrapperWorld& world, DOMClass* domObject, WrapperClass* wrapper)
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{
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JSC::WeakHandleOwner* owner = wrapperOwner(world, domObject);
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if (setInlineCachedWrapper(world, domObject, wrapper, owner))
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return;
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weakAdd(world.wrappers(), wrapperKey(domObject), JSC::Weak<JSC::JSObject>(wrapper, owner, &world));
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}
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template<typename DOMClass, typename WrapperClass> inline void uncacheWrapper(DOMWrapperWorld& world, DOMClass* domObject, WrapperClass* wrapper)
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{
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if (clearInlineCachedWrapper(world, domObject, wrapper))
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return;
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weakRemove(world.wrappers(), wrapperKey(domObject), wrapper);
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}
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template<typename DOMClass, typename T> inline auto createWrapper(JSDOMGlobalObject* globalObject, Ref<T>&& domObject) -> typename std::enable_if<std::is_same<DOMClass, T>::value, typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass*>::type
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{
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using WrapperClass = typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass;
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ASSERT(!getCachedWrapper(globalObject->world(), domObject));
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auto* domObjectPtr = domObject.ptr();
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auto* wrapper = WrapperClass::create(getDOMStructure<WrapperClass>(globalObject->vm(), *globalObject), globalObject, WTFMove(domObject));
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cacheWrapper(globalObject->world(), domObjectPtr, wrapper);
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return wrapper;
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}
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template<typename DOMClass, typename T> inline auto createWrapper(JSDOMGlobalObject* globalObject, Ref<T>&& domObject) -> typename std::enable_if<!std::is_same<DOMClass, T>::value, typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass*>::type
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{
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return createWrapper<DOMClass>(globalObject, static_reference_cast<DOMClass>(WTFMove(domObject)));
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}
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template<typename DOMClass> inline JSC::JSValue wrap(JSC::JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, DOMClass& domObject)
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{
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if (auto* wrapper = getCachedWrapper(globalObject->world(), domObject))
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return wrapper;
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return toJSNewlyCreated(lexicalGlobalObject, globalObject, Ref<DOMClass>(domObject));
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}
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template<typename DOMClass> inline void setSubclassStructureIfNeeded(JSC::JSGlobalObject* lexicalGlobalObject, JSC::CallFrame* callFrame, JSC::JSObject* jsObject)
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{
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JSC::JSObject* newTarget = callFrame->newTarget().getObject();
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JSC::JSObject* constructor = callFrame->jsCallee();
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if (!newTarget || newTarget == constructor)
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return;
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using WrapperClass = typename JSDOMWrapperConverterTraits<DOMClass>::WrapperClass;
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JSC::VM& vm = lexicalGlobalObject->vm();
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auto scope = DECLARE_THROW_SCOPE(vm);
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auto* functionGlobalObject = JSC::getFunctionRealm(lexicalGlobalObject, newTarget);
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RETURN_IF_EXCEPTION(scope, void());
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auto* newTargetGlobalObject = JSC::jsCast<JSDOMGlobalObject*>(functionGlobalObject);
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auto* baseStructure = getDOMStructure<WrapperClass>(vm, *newTargetGlobalObject);
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auto* subclassStructure = JSC::InternalFunction::createSubclassStructure(lexicalGlobalObject, newTarget, baseStructure);
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RETURN_IF_EXCEPTION(scope, void());
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jsObject->setStructure(vm, subclassStructure);
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}
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} // namespace WebCore
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