202 lines
8.5 KiB
C++
202 lines
8.5 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "JSDocument.h"
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#if ENABLE(JIT)
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#include "DOMJITAbstractHeapRepository.h"
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#include "DOMJITCheckDOM.h"
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#include "DOMJITHelpers.h"
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#include "Document.h"
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#include "JSDOMWrapper.h"
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#include "JSElement.h"
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#include "JSHTMLElement.h"
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#include <JavaScriptCore/Snippet.h>
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#include <JavaScriptCore/SnippetParams.h>
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IGNORE_WARNINGS_BEGIN("frame-address");
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namespace WebCore {
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using namespace JSC;
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Ref<JSC::Snippet> checkSubClassSnippetForJSDocument()
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{
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return DOMJIT::checkDOM<Document>();
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}
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Ref<JSC::DOMJIT::CallDOMGetterSnippet> compileDocumentDocumentElementAttribute()
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{
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Ref<JSC::DOMJIT::CallDOMGetterSnippet> snippet = JSC::DOMJIT::CallDOMGetterSnippet::create();
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snippet->numGPScratchRegisters = 1;
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snippet->setGenerator([=](CCallHelpers& jit, JSC::SnippetParams& params) {
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JSValueRegs result = params[0].jsValueRegs();
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GPRReg document = params[1].gpr();
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GPRReg globalObject = params[2].gpr();
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JSValue globalObjectValue = params[2].value();
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GPRReg scratch = params.gpScratch(0);
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jit.loadPtr(CCallHelpers::Address(document, JSDocument::offsetOfWrapped()), scratch);
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DOMJIT::loadDocumentElement(jit, scratch, scratch);
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auto nullCase = jit.branchTestPtr(CCallHelpers::Zero, scratch);
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DOMJIT::toWrapper<Element>(jit, params, scratch, globalObject, result, DOMJIT::operationToJSElement, globalObjectValue);
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auto done = jit.jump();
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nullCase.link(&jit);
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jit.moveValue(jsNull(), result);
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done.link(&jit);
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return CCallHelpers::JumpList();
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});
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snippet->effect = JSC::DOMJIT::Effect::forDef(DOMJIT::AbstractHeapRepository::Document_documentElement);
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return snippet;
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}
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static void loadLocalName(CCallHelpers& jit, GPRReg htmlElement, GPRReg localNameImpl)
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{
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jit.loadPtr(CCallHelpers::Address(htmlElement, Element::tagQNameMemoryOffset() + QualifiedName::implMemoryOffset()), localNameImpl);
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jit.loadPtr(CCallHelpers::Address(localNameImpl, QualifiedName::QualifiedNameImpl::localNameMemoryOffset()), localNameImpl);
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}
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Ref<JSC::DOMJIT::CallDOMGetterSnippet> compileDocumentBodyAttribute()
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{
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Ref<JSC::DOMJIT::CallDOMGetterSnippet> snippet = JSC::DOMJIT::CallDOMGetterSnippet::create();
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snippet->numGPScratchRegisters = 2;
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snippet->setGenerator([=](CCallHelpers& jit, JSC::SnippetParams& params) {
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JSValueRegs result = params[0].jsValueRegs();
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GPRReg document = params[1].gpr();
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GPRReg globalObject = params[2].gpr();
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JSValue globalObjectValue = params[2].value();
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GPRReg scratch1 = params.gpScratch(0);
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GPRReg scratch2 = params.gpScratch(1);
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jit.loadPtr(CCallHelpers::Address(document, JSDocument::offsetOfWrapped()), scratch1);
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DOMJIT::loadDocumentElement(jit, scratch1, scratch1);
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CCallHelpers::JumpList nullCases;
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CCallHelpers::JumpList successCases;
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nullCases.append(jit.branchTestPtr(CCallHelpers::Zero, scratch1));
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nullCases.append(DOMJIT::branchTestIsHTMLFlagOnNode(jit, CCallHelpers::Zero, scratch1));
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// We ensured that the name of the given element is HTML qualified.
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// It allows us to perform local name comparison!
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loadLocalName(jit, scratch1, scratch2);
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nullCases.append(jit.branchPtr(CCallHelpers::NotEqual, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::htmlTag->localName().impl())));
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RELEASE_ASSERT(!CAST_OFFSET(Node*, ContainerNode*));
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RELEASE_ASSERT(!CAST_OFFSET(Node*, Element*));
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RELEASE_ASSERT(!CAST_OFFSET(Node*, HTMLElement*));
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// Node* node = current.firstChild();
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// while (node && !is<HTMLElement>(*node))
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// node = node->nextSibling();
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// return downcast<HTMLElement>(node);
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jit.loadPtr(CCallHelpers::Address(scratch1, ContainerNode::firstChildMemoryOffset()), scratch1);
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CCallHelpers::Label loopStart = jit.label();
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nullCases.append(jit.branchTestPtr(CCallHelpers::Zero, scratch1));
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auto notHTMLElementCase = DOMJIT::branchTestIsHTMLFlagOnNode(jit, CCallHelpers::Zero, scratch1);
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// We ensured that the name of the given element is HTML qualified.
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// It allows us to perform local name comparison!
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loadLocalName(jit, scratch1, scratch2);
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successCases.append(jit.branchPtr(CCallHelpers::Equal, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::bodyTag->localName().impl())));
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successCases.append(jit.branchPtr(CCallHelpers::Equal, scratch2, CCallHelpers::TrustedImmPtr(HTMLNames::framesetTag->localName().impl())));
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notHTMLElementCase.link(&jit);
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jit.loadPtr(CCallHelpers::Address(scratch1, Node::nextSiblingMemoryOffset()), scratch1);
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jit.jump().linkTo(loopStart, &jit);
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successCases.link(&jit);
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DOMJIT::toWrapper<HTMLElement>(jit, params, scratch1, globalObject, result, DOMJIT::operationToJSHTMLElement, globalObjectValue);
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auto done = jit.jump();
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nullCases.link(&jit);
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jit.moveValue(jsNull(), result);
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done.link(&jit);
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return CCallHelpers::JumpList();
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});
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snippet->effect = JSC::DOMJIT::Effect::forDef(DOMJIT::AbstractHeapRepository::Document_body);
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return snippet;
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}
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namespace DOMJIT {
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JSC_DEFINE_JIT_OPERATION(operationToJSElement, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
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{
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ASSERT(result);
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ASSERT(globalObject);
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JSC::VM& vm = globalObject->vm();
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JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
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JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
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return DOMJIT::toWrapperSlowImpl<Element>(globalObject, result);
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}
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JSC_DEFINE_JIT_OPERATION(operationToJSHTMLElement, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
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{
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ASSERT(result);
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ASSERT(globalObject);
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JSC::VM& vm = globalObject->vm();
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JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
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JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
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return DOMJIT::toWrapperSlowImpl<HTMLElement>(globalObject, result);
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}
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JSC_DEFINE_JIT_OPERATION(operationToJSDocument, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
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{
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ASSERT(result);
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ASSERT(globalObject);
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JSC::VM& vm = globalObject->vm();
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JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
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JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
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return DOMJIT::toWrapperSlowImpl<Document>(globalObject, result);
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}
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JSC_DEFINE_JIT_OPERATION(operationToJSNode, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
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{
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ASSERT(result);
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ASSERT(globalObject);
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JSC::VM& vm = globalObject->vm();
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JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
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JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
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return DOMJIT::toWrapperSlowImpl<Node>(globalObject, result);
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}
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JSC_DEFINE_JIT_OPERATION(operationToJSContainerNode, JSC::EncodedJSValue, (JSC::JSGlobalObject* globalObject, void* result))
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{
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ASSERT(result);
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ASSERT(globalObject);
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JSC::VM& vm = globalObject->vm();
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JSC::CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
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JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
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return DOMJIT::toWrapperSlowImpl<ContainerNode>(globalObject, result);
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}
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} } // namespace WebCore::DOMJIT
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IGNORE_WARNINGS_END
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#endif // ENABLE(JIT)
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