1/*
2 * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "JSMessageChannel.h"
28
29#include "MessageChannel.h"
30#include <runtime/Error.h>
31
32using namespace JSC;
33
34namespace WebCore {
35
36void JSMessageChannel::markChildren(MarkStack& markStack)
37{
38    Base::markChildren(markStack);
39
40    if (MessagePort* port = m_impl->port1())
41        markDOMObjectWrapper(markStack, *Heap::heap(this)->globalData(), port);
42
43    if (MessagePort* port = m_impl->port2())
44        markDOMObjectWrapper(markStack, *Heap::heap(this)->globalData(), port);
45}
46
47EncodedJSValue JSC_HOST_CALL JSMessageChannelConstructor::constructJSMessageChannel(ExecState* exec)
48{
49    JSMessageChannelConstructor* jsConstructor = static_cast<JSMessageChannelConstructor*>(exec->callee());
50    ScriptExecutionContext* context = jsConstructor->scriptExecutionContext();
51    if (!context)
52        return throwVMError(exec, createReferenceError(exec, "MessageChannel constructor associated document is unavailable"));
53
54    return JSValue::encode(asObject(toJS(exec, jsConstructor->globalObject(), MessageChannel::create(context))));
55}
56
57} // namespace WebCore
58