1/*
2 * Copyright (C) 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. 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#ifndef IDBKeyData_h
27#define IDBKeyData_h
28
29#if ENABLE(INDEXED_DATABASE)
30
31#include "IDBKey.h"
32
33namespace WebCore {
34
35class KeyedDecoder;
36class KeyedEncoder;
37
38struct IDBKeyData {
39    IDBKeyData()
40        : type(IDBKey::InvalidType)
41        , numberValue(0)
42        , isNull(true)
43    {
44    }
45
46    IDBKeyData(const IDBKey*);
47
48    static IDBKeyData minimum()
49    {
50        IDBKeyData result;
51        result.type = IDBKey::MinType;
52        result.isNull = false;
53        return result;
54    }
55
56    static IDBKeyData maximum()
57    {
58        IDBKeyData result;
59        result.type = IDBKey::MaxType;
60        result.isNull = false;
61        return result;
62    }
63
64    PassRefPtr<IDBKey> maybeCreateIDBKey() const;
65
66    IDBKeyData isolatedCopy() const;
67
68    void encode(KeyedEncoder&) const;
69    static bool decode(KeyedDecoder&, IDBKeyData&);
70
71    // compare() has the same semantics as strcmp().
72    //   - Returns negative if this IDBKeyData is less than other.
73    //   - Returns positive if this IDBKeyData is greater than other.
74    //   - Returns zero if this IDBKeyData is equal to other.
75    int compare(const IDBKeyData& other) const;
76
77    void setArrayValue(const Vector<IDBKeyData>&);
78    void setStringValue(const String&);
79    void setDateValue(double);
80    void setNumberValue(double);
81
82#ifndef NDEBUG
83    String loggingString() const;
84#endif
85
86    IDBKey::Type type;
87    Vector<IDBKeyData> arrayValue;
88    String stringValue;
89    double numberValue;
90    bool isNull;
91};
92
93} // namespace WebCore
94
95#endif // ENABLE(INDEXED_DATABASE)
96#endif // IDBKeyData_h
97