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 | |
31 | namespace WebCore { |
32 | |
33 | // Frame identifier that is unique across all WebContent processes. |
34 | struct 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 | |
42 | template<class Encoder> |
43 | void GlobalFrameIdentifier::encode(Encoder& encoder) const |
44 | { |
45 | encoder << pageID << frameID; |
46 | } |
47 | |
48 | template<class Decoder> |
49 | Optional<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 | |