1/*
2 * Copyright (C) 2010 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 <wtf/Vector.h>
29
30namespace IPC {
31
32class Decoder;
33class Encoder;
34
35class DataReference {
36public:
37 DataReference() = default;
38
39 DataReference(const uint8_t* data, size_t size)
40 : m_data(data)
41 , m_size(size)
42 {
43 }
44
45 template<size_t inlineCapacity>
46 DataReference(const Vector<uint8_t, inlineCapacity>& vector)
47 : m_data(vector.data())
48 , m_size(vector.size())
49 {
50 }
51
52 bool isEmpty() const { return !m_size; }
53
54 size_t size() const { return m_size; }
55 const uint8_t* data() const
56 {
57 if (isEmpty())
58 return nullptr;
59 return m_data;
60 }
61
62 Vector<uint8_t> vector() const
63 {
64 Vector<uint8_t> result;
65 result.append(m_data, m_size);
66
67 return result;
68 }
69
70 void encode(Encoder&) const;
71 static bool decode(Decoder&, DataReference&);
72
73private:
74 const uint8_t* m_data { nullptr };
75 size_t m_size { 0 };
76};
77
78} // namespace IPC
79