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 | |
29 | namespace WebCore { |
30 | |
31 | enum class ResourceLoadPriority : uint8_t { |
32 | VeryLow, |
33 | Low, |
34 | Medium, |
35 | High, |
36 | VeryHigh, |
37 | Lowest = VeryLow, |
38 | Highest = VeryHigh, |
39 | }; |
40 | |
41 | static const unsigned resourceLoadPriorityCount { static_cast<unsigned>(ResourceLoadPriority::Highest) + 1 }; |
42 | |
43 | inline ResourceLoadPriority& operator++(ResourceLoadPriority& priority) |
44 | { |
45 | ASSERT(priority != ResourceLoadPriority::Highest); |
46 | return priority = static_cast<ResourceLoadPriority>(static_cast<int>(priority) + 1); |
47 | } |
48 | |
49 | inline 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 | |