1/*
2 * Copyright (C) 2018 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "PageIdentifier.h"
29#include <wtf/Optional.h>
30
31namespace WebCore {
32
33// Frame identifier that is unique across all WebContent processes.
34struct GlobalFrameIdentifier {
35 PageIdentifier pageID;
36 uint64_t frameID;
37
38 template<class Encoder> void encode(Encoder&) const;
39 template<class Decoder> static Optional<GlobalFrameIdentifier> decode(Decoder&);
40};
41
42template<class Encoder>
43void GlobalFrameIdentifier::encode(Encoder& encoder) const
44{
45 encoder << pageID << frameID;
46}
47
48template<class Decoder>
49Optional<GlobalFrameIdentifier> GlobalFrameIdentifier::decode(Decoder& decoder)
50{
51 Optional<PageIdentifier> pageID;
52 decoder >> pageID;
53 if (!pageID)
54 return WTF::nullopt;
55
56 Optional<uint64_t> frameID;
57 decoder >> frameID;
58 if (!frameID)
59 return WTF::nullopt;
60
61 return { { WTFMove(*pageID), WTFMove(*frameID) } };
62}
63
64} // namespace WebCore
65