1/*
2 * Copyright (C) 2008, 2014 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. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "CSSSelector.h"
29#include <memory>
30#include <wtf/UniqueArray.h>
31
32namespace WebCore {
33
34class CSSParserSelector;
35
36class CSSSelectorList {
37 WTF_MAKE_FAST_ALLOCATED;
38public:
39 CSSSelectorList() = default;
40 CSSSelectorList(const CSSSelectorList&);
41 CSSSelectorList(CSSSelectorList&&) = default;
42 explicit CSSSelectorList(Vector<std::unique_ptr<CSSParserSelector>>&&);
43 explicit CSSSelectorList(UniqueArray<CSSSelector>&& array)
44 : m_selectorArray(WTFMove(array)) { }
45
46 bool isValid() const { return !!m_selectorArray; }
47 const CSSSelector* first() const { return m_selectorArray.get(); }
48 static const CSSSelector* next(const CSSSelector*);
49 const CSSSelector* selectorAt(size_t index) const { return &m_selectorArray[index]; }
50
51 size_t indexOfNextSelectorAfter(size_t index) const
52 {
53 const CSSSelector* current = selectorAt(index);
54 current = next(current);
55 if (!current)
56 return notFound;
57 return current - m_selectorArray.get();
58 }
59
60 bool selectorsNeedNamespaceResolution();
61 bool hasInvalidSelector() const;
62
63 String selectorsText() const;
64 void buildSelectorsText(StringBuilder&) const;
65
66 unsigned componentCount() const;
67 unsigned listSize() const;
68
69 CSSSelectorList& operator=(CSSSelectorList&&) = default;
70private:
71 // End of a multipart selector is indicated by m_isLastInTagHistory bit in the last item.
72 // End of the array is indicated by m_isLastInSelectorList bit in the last item.
73 UniqueArray<CSSSelector> m_selectorArray;
74};
75
76inline const CSSSelector* CSSSelectorList::next(const CSSSelector* current)
77{
78 // Skip subparts of compound selectors.
79 while (!current->isLastInTagHistory())
80 current++;
81 return current->isLastInSelectorList() ? 0 : current + 1;
82}
83
84} // namespace WebCore
85