1/*
2 * Copyright (C) 2016 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#if ENABLE(INDEXED_DATABASE)
29
30#include "IDBKeyData.h"
31
32namespace WebCore {
33
34struct IDBIterateCursorData {
35 IDBKeyData keyData;
36 IDBKeyData primaryKeyData;
37 unsigned count;
38
39 IDBIterateCursorData isolatedCopy() const;
40
41#if !LOG_DISABLED
42 String loggingString() const;
43#endif
44
45 template<class Encoder> void encode(Encoder&) const;
46 template<class Decoder> static bool decode(Decoder&, IDBIterateCursorData&);
47};
48
49template<class Encoder>
50void IDBIterateCursorData::encode(Encoder& encoder) const
51{
52 encoder << keyData << primaryKeyData << static_cast<uint64_t>(count);
53}
54
55template<class Decoder>
56bool IDBIterateCursorData::decode(Decoder& decoder, IDBIterateCursorData& iteratorCursorData)
57{
58 Optional<IDBKeyData> keyData;
59 decoder >> keyData;
60 if (!keyData)
61 return false;
62 iteratorCursorData.keyData = WTFMove(*keyData);
63
64 Optional<IDBKeyData> primaryKeyData;
65 decoder >> primaryKeyData;
66 if (!primaryKeyData)
67 return false;
68 iteratorCursorData.primaryKeyData = WTFMove(*primaryKeyData);
69
70 uint64_t count;
71 if (!decoder.decode(count))
72 return false;
73
74 if (count > std::numeric_limits<unsigned>::max())
75 return false;
76
77 iteratorCursorData.count = static_cast<unsigned>(count);
78
79 return true;
80}
81
82} // namespace WebCore
83
84#endif // ENABLE(INDEXED_DATABASE)
85