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#ifndef ResourceLoadPriority_h
27#define ResourceLoadPriority_h
28
29namespace WebCore {
30
31enum class ResourceLoadPriority : uint8_t {
32 VeryLow,
33 Low,
34 Medium,
35 High,
36 VeryHigh,
37 Lowest = VeryLow,
38 Highest = VeryHigh,
39};
40
41static const unsigned resourceLoadPriorityCount { static_cast<unsigned>(ResourceLoadPriority::Highest) + 1 };
42
43inline ResourceLoadPriority& operator++(ResourceLoadPriority& priority)
44{
45 ASSERT(priority != ResourceLoadPriority::Highest);
46 return priority = static_cast<ResourceLoadPriority>(static_cast<int>(priority) + 1);
47}
48
49inline ResourceLoadPriority& operator--(ResourceLoadPriority& priority)
50{
51 ASSERT(priority != ResourceLoadPriority::Lowest);
52 return priority = static_cast<ResourceLoadPriority>(static_cast<int>(priority) - 1);
53}
54
55}
56
57#endif
58
59