1/*
2 * Copyright (C) 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 "Term.h"
32#include <wtf/HashSet.h>
33#include <wtf/Vector.h>
34
35namespace WebCore {
36
37namespace ContentExtensions {
38
39class CombinedFiltersAlphabet {
40public:
41 const Term* interned(const Term&);
42#if CONTENT_EXTENSIONS_PERFORMANCE_REPORTING
43 size_t memoryUsed() const;
44#endif
45
46private:
47 struct TermPointerHash {
48 static unsigned hash(const Term* key) { return key->hash(); }
49 static inline bool equal(const Term* a, const Term* b)
50 {
51 return *a == *b;
52 }
53 static const bool safeToCompareToEmptyOrDeleted = false;
54 };
55
56 HashSet<const Term*, TermPointerHash> m_uniqueTerms;
57 Vector<std::unique_ptr<Term>> m_internedTermsStorage;
58};
59
60} // namespace ContentExtensions
61} // namespace WebCore
62
63#endif // ENABLE(CONTENT_EXTENSIONS)
64