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* Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
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* Copyright (C) 2011 Google Inc. All Rights Reserved.
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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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* 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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* 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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#include "JSMessagePort.h"
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#include "ExceptionCode.h"
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#include "JSArrayBuffer.h"
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#include "JSDOMGlobalObject.h"
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#include "JSEventListener.h"
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#include "JSMessagePortCustom.h"
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#include "MessagePort.h"
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#include <runtime/Error.h>
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#include <wtf/text/AtomicString.h>
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void JSMessagePort::visitChildren(JSCell* cell, SlotVisitor& visitor)
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JSMessagePort* thisObject = jsCast<JSMessagePort*>(cell);
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ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
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COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
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ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
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Base::visitChildren(thisObject, visitor);
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// If we have a locally entangled port, we can directly mark it as reachable. Ports that are remotely entangled are marked in-use by markActiveObjectsForContext().
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if (MessagePort* port = thisObject->m_impl->locallyEntangledPort())
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visitor.addOpaqueRoot(port);
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thisObject->m_impl->visitJSEventListeners(visitor);
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JSC::JSValue JSMessagePort::postMessage(JSC::ExecState* exec)
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return handlePostMessage(exec, impl());
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#if ENABLE(LEGACY_VENDOR_PREFIXES)
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JSC::JSValue JSMessagePort::webkitPostMessage(JSC::ExecState* exec)
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return handlePostMessage(exec, impl());
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void fillMessagePortArray(JSC::ExecState* exec, JSC::JSValue value, MessagePortArray& portArray, ArrayBufferArray& arrayBuffers)
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// Convert from the passed-in JS array-like object to a MessagePortArray.
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// Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec.
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if (value.isUndefinedOrNull()) {
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arrayBuffers.resize(0);
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// Validation of sequence types, per WebIDL spec 4.1.13.
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JSObject* object = toJSSequence(exec, value, length);
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if (exec->hadException())
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for (unsigned i = 0 ; i < length; ++i) {
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JSValue value = object->get(exec, i);
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if (exec->hadException())
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// Validation of non-null objects, per HTML5 spec 10.3.3.
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if (value.isUndefinedOrNull()) {
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setDOMException(exec, INVALID_STATE_ERR);
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// Validation of Objects implementing an interface, per WebIDL spec 4.1.15.
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RefPtr<MessagePort> port = toMessagePort(value);
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// Check for duplicate ports.
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if (portArray.contains(port)) {
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setDOMException(exec, INVALID_STATE_ERR);
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portArray.append(port.release());
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RefPtr<ArrayBuffer> arrayBuffer = toArrayBuffer(value);
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arrayBuffers.append(arrayBuffer);
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throwTypeError(exec);
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} // namespace WebCore