1/*
2 * Copyright (C) 2010 Google 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 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef IDBKeyPath_h
27#define IDBKeyPath_h
28
29#include "wtf/Vector.h"
30#include "wtf/text/WTFString.h"
31
32namespace blink {
33
34enum IDBKeyPathParseError {
35    IDBKeyPathParseErrorNone,
36    IDBKeyPathParseErrorStart,
37    IDBKeyPathParseErrorIdentifier,
38    IDBKeyPathParseErrorDot,
39};
40
41void IDBParseKeyPath(const String&, Vector<String>&, IDBKeyPathParseError&);
42
43class IDBKeyPath {
44public:
45    IDBKeyPath() : m_type(NullType) { }
46    explicit IDBKeyPath(const String&);
47    explicit IDBKeyPath(const Vector<String>& array);
48
49    enum Type {
50        NullType = 0,
51        StringType,
52        ArrayType
53    };
54
55    Type type() const { return m_type; }
56
57    const Vector<String>& array() const
58    {
59        ASSERT(m_type == ArrayType);
60        return m_array;
61    }
62
63    const String& string() const
64    {
65        ASSERT(m_type == StringType);
66        return m_string;
67    }
68
69    bool isNull() const { return m_type == NullType; }
70    bool isValid() const;
71    bool operator==(const IDBKeyPath& other) const;
72
73private:
74    Type m_type;
75    String m_string;
76    Vector<String> m_array;
77};
78
79} // namespace blink
80
81#endif // IDBKeyPath_h
82