2 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
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5 * modification, are permitted provided that the following conditions
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27 #include "JSMessageChannel.h"
29 #include "MessageChannel.h"
30 #include <runtime/Error.h>
36 void JSMessageChannel::visitChildren(SlotVisitor& visitor)
38 ASSERT_GC_OBJECT_INHERITS(this, &s_info);
39 COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
40 ASSERT(structure()->typeInfo().overridesVisitChildren());
41 Base::visitChildren(visitor);
43 if (MessagePort* port = m_impl->port1())
44 visitor.addOpaqueRoot(port);
46 if (MessagePort* port = m_impl->port2())
47 visitor.addOpaqueRoot(port);
50 EncodedJSValue JSC_HOST_CALL JSMessageChannelConstructor::constructJSMessageChannel(ExecState* exec)
52 JSMessageChannelConstructor* jsConstructor = static_cast<JSMessageChannelConstructor*>(exec->callee());
53 ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();
55 return throwVMError(exec, createReferenceError(exec, "MessageChannel constructor associated document is unavailable"));
57 return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), MessageChannel::create(context))));
60 } // namespace WebCore