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 | |
32 | namespace WebCore { |
33 | |
34 | class CSSParserSelector; |
35 | |
36 | class CSSSelectorList { |
37 | WTF_MAKE_FAST_ALLOCATED; |
38 | public: |
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; |
70 | private: |
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 | |
76 | inline 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 | |