1 | /* |
2 | * Copyright (C) 2018 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 | #include "CSSParserMode.h" |
29 | #include "TextEncoding.h" |
30 | #include <wtf/HashFunctions.h> |
31 | #include <wtf/URL.h> |
32 | #include <wtf/URLHash.h> |
33 | #include <wtf/text/StringHash.h> |
34 | |
35 | namespace WebCore { |
36 | |
37 | class Document; |
38 | |
39 | struct CSSParserContext { |
40 | WTF_MAKE_FAST_ALLOCATED; |
41 | public: |
42 | CSSParserContext(CSSParserMode, const URL& baseURL = URL()); |
43 | WEBCORE_EXPORT CSSParserContext(const Document&, const URL& baseURL = URL(), const String& charset = emptyString()); |
44 | |
45 | URL baseURL; |
46 | String charset; |
47 | CSSParserMode mode { HTMLStandardMode }; |
48 | bool isHTMLDocument { false }; |
49 | #if ENABLE(TEXT_AUTOSIZING) |
50 | bool textAutosizingEnabled { false }; |
51 | #endif |
52 | #if ENABLE(OVERFLOW_SCROLLING_TOUCH) |
53 | bool legacyOverflowScrollingTouchEnabled { false }; |
54 | #endif |
55 | bool enforcesCSSMIMETypeInNoQuirksMode { true }; |
56 | bool useLegacyBackgroundSizeShorthandBehavior { false }; |
57 | bool springTimingFunctionEnabled { false }; |
58 | bool constantPropertiesEnabled { false }; |
59 | bool colorFilterEnabled { false }; |
60 | #if ENABLE(ATTACHMENT_ELEMENT) |
61 | bool attachmentEnabled { false }; |
62 | #endif |
63 | bool deferredCSSParserEnabled { false }; |
64 | |
65 | // This is only needed to support getMatchedCSSRules. |
66 | bool hasDocumentSecurityOrigin { false }; |
67 | |
68 | bool useSystemAppearance { false }; |
69 | |
70 | URL completeURL(const String& url) const |
71 | { |
72 | if (url.isNull()) |
73 | return URL(); |
74 | if (charset.isEmpty()) |
75 | return URL(baseURL, url); |
76 | TextEncoding encoding(charset); |
77 | auto& encodingForURLParsing = encoding.encodingForFormSubmissionOrURLParsing(); |
78 | return URL(baseURL, url, encodingForURLParsing == UTF8Encoding() ? nullptr : &encodingForURLParsing); |
79 | } |
80 | |
81 | bool isContentOpaque { false }; |
82 | }; |
83 | |
84 | bool operator==(const CSSParserContext&, const CSSParserContext&); |
85 | inline bool operator!=(const CSSParserContext& a, const CSSParserContext& b) { return !(a == b); } |
86 | |
87 | WEBCORE_EXPORT const CSSParserContext& strictCSSParserContext(); |
88 | |
89 | struct CSSParserContextHash { |
90 | static unsigned hash(const CSSParserContext& key) |
91 | { |
92 | auto hash = WTF::URLHash::hash(key.baseURL); |
93 | if (!key.charset.isEmpty()) |
94 | hash ^= StringHash::hash(key.charset); |
95 | unsigned bits = key.isHTMLDocument << 0 |
96 | #if ENABLE(TEXT_AUTOSIZING) |
97 | & key.textAutosizingEnabled << 1 |
98 | #endif |
99 | #if ENABLE(OVERFLOW_SCROLLING_TOUCH) |
100 | & key.legacyOverflowScrollingTouchEnabled << 2 |
101 | #endif |
102 | & key.enforcesCSSMIMETypeInNoQuirksMode << 3 |
103 | & key.useLegacyBackgroundSizeShorthandBehavior << 4 |
104 | & key.springTimingFunctionEnabled << 5 |
105 | & key.constantPropertiesEnabled << 6 |
106 | & key.colorFilterEnabled << 7 |
107 | & key.deferredCSSParserEnabled << 8 |
108 | & key.hasDocumentSecurityOrigin << 9 |
109 | & key.useSystemAppearance << 10 |
110 | #if ENABLE(ATTACHMENT_ELEMENT) |
111 | & key.attachmentEnabled << 11 |
112 | #endif |
113 | & key.mode << 12; // Keep this last. |
114 | hash ^= WTF::intHash(bits); |
115 | return hash; |
116 | } |
117 | static bool equal(const CSSParserContext& a, const CSSParserContext& b) |
118 | { |
119 | return a == b; |
120 | } |
121 | static const bool safeToCompareToEmptyOrDeleted = false; |
122 | }; |
123 | |
124 | } // namespace WebCore |
125 | |
126 | namespace WTF { |
127 | template<> struct HashTraits<WebCore::CSSParserContext> : GenericHashTraits<WebCore::CSSParserContext> { |
128 | static void constructDeletedValue(WebCore::CSSParserContext& slot) { new (NotNull, &slot.baseURL) URL(WTF::HashTableDeletedValue); } |
129 | static bool isDeletedValue(const WebCore::CSSParserContext& value) { return value.baseURL.isHashTableDeletedValue(); } |
130 | static WebCore::CSSParserContext emptyValue() { return WebCore::CSSParserContext(WebCore::HTMLStandardMode); } |
131 | }; |
132 | |
133 | template<> struct DefaultHash<WebCore::CSSParserContext> { |
134 | typedef WebCore::CSSParserContextHash Hash; |
135 | }; |
136 | } // namespace WTF |
137 | |