1/*
2 * Copyright (C) 2014, 2015 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#if ENABLE(CONTENT_EXTENSIONS)
29
30#include "ContentExtensionsDebugging.h"
31#include "DFANode.h"
32#include <wtf/Vector.h>
33
34namespace WebCore {
35
36namespace ContentExtensions {
37
38// The DFA abstract a partial DFA graph in a compact form.
39struct WEBCORE_EXPORT DFA {
40 static DFA empty();
41
42 void shrinkToFit();
43 void minimize();
44 unsigned graphSize() const;
45 size_t memoryUsed() const;
46
47#if CONTENT_EXTENSIONS_STATE_MACHINE_DEBUGGING
48 void debugPrintDot() const;
49#endif
50
51 Vector<DFANode, 0, ContentExtensionsOverflowHandler> nodes;
52 Vector<uint64_t, 0, ContentExtensionsOverflowHandler> actions;
53 Vector<CharRange, 0, ContentExtensionsOverflowHandler> transitionRanges;
54 Vector<uint32_t, 0, ContentExtensionsOverflowHandler> transitionDestinations;
55 unsigned root { 0 };
56};
57
58inline const CharRange& DFANode::ConstRangeIterator::range() const
59{
60 return dfa.transitionRanges[position];
61}
62
63inline uint32_t DFANode::ConstRangeIterator::target() const
64{
65 return dfa.transitionDestinations[position];
66}
67
68inline const CharRange& DFANode::RangeIterator::range() const
69{
70 return dfa.transitionRanges[position];
71}
72
73inline uint32_t DFANode::RangeIterator::target() const
74{
75 return dfa.transitionDestinations[position];
76}
77
78inline void DFANode::RangeIterator::resetTarget(uint32_t newTarget)
79{
80 dfa.transitionDestinations[position] = newTarget;
81}
82
83} // namespace ContentExtensions
84} // namespace WebCore
85
86#endif // ENABLE(CONTENT_EXTENSIONS)
87