1/*
2 * Copyright (C) 2007, 2014 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 "JSNodeList.h"
28
29#include "ChildNodeList.h"
30#include "JSNode.h"
31#include "LiveNodeList.h"
32#include "Node.h"
33#include "NodeList.h"
34#include <wtf/text/AtomicString.h>
35
36
37namespace WebCore {
38using namespace JSC;
39
40bool JSNodeListOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor, const char** reason)
41{
42 JSNodeList* jsNodeList = jsCast<JSNodeList*>(handle.slot()->asCell());
43 if (!jsNodeList->hasCustomProperties(*jsNodeList->vm()))
44 return false;
45
46 if (jsNodeList->wrapped().isLiveNodeList()) {
47 if (UNLIKELY(reason))
48 *reason = "LiveNodeList owner is opaque root";
49
50 return visitor.containsOpaqueRoot(root(static_cast<LiveNodeList&>(jsNodeList->wrapped()).ownerNode()));
51 }
52
53 if (jsNodeList->wrapped().isChildNodeList()) {
54 if (UNLIKELY(reason))
55 *reason = "ChildNodeList owner is opaque root";
56
57 return visitor.containsOpaqueRoot(root(static_cast<ChildNodeList&>(jsNodeList->wrapped()).ownerNode()));
58 }
59
60 if (jsNodeList->wrapped().isEmptyNodeList()) {
61 if (UNLIKELY(reason))
62 *reason = "EmptyNodeList owner is opaque root";
63
64 return visitor.containsOpaqueRoot(root(static_cast<EmptyNodeList&>(jsNodeList->wrapped()).ownerNode()));
65 }
66 return false;
67}
68
69JSC::JSValue createWrapper(JSDOMGlobalObject& globalObject, Ref<NodeList>&& nodeList)
70{
71 // FIXME: Adopt reportExtraMemoryVisited, and switch to reportExtraMemoryAllocated.
72 // https://bugs.webkit.org/show_bug.cgi?id=142595
73 globalObject.vm().heap.deprecatedReportExtraMemory(nodeList->memoryCost());
74 return createWrapper<NodeList>(&globalObject, WTFMove(nodeList));
75}
76
77JSC::JSValue toJSNewlyCreated(ExecState*, JSDOMGlobalObject* globalObject, Ref<NodeList>&& nodeList)
78{
79 return createWrapper(*globalObject, WTFMove(nodeList));
80}
81
82} // namespace WebCore
83