1 /*
2 * Copyright (c) 2007 Henri Sivonen
3 * Copyright (c) 2008-2017 Mozilla Foundation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #define nsHtml5HtmlAttributes_cpp__
25
26 #include "jArray.h"
27 #include "nsAHtml5TreeBuilderState.h"
28 #include "nsAtom.h"
29 #include "nsHtml5ArrayCopy.h"
30 #include "nsHtml5AtomTable.h"
31 #include "nsHtml5ByteReadable.h"
32 #include "nsHtml5Macros.h"
33 #include "nsHtml5String.h"
34 #include "nsIContent.h"
35 #include "nsIContentHandle.h"
36 #include "nsNameSpaceManager.h"
37 #include "nsTraceRefcnt.h"
38
39 #include "nsHtml5AttributeName.h"
40 #include "nsHtml5ElementName.h"
41 #include "nsHtml5MetaScanner.h"
42 #include "nsHtml5Portability.h"
43 #include "nsHtml5StackNode.h"
44 #include "nsHtml5StateSnapshot.h"
45 #include "nsHtml5Tokenizer.h"
46 #include "nsHtml5TreeBuilder.h"
47 #include "nsHtml5UTF16Buffer.h"
48
49 #include "nsHtml5HtmlAttributes.h"
50
51 nsHtml5HtmlAttributes* nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES = nullptr;
52
nsHtml5HtmlAttributes(int32_t aMode)53 nsHtml5HtmlAttributes::nsHtml5HtmlAttributes(int32_t aMode) : mMode(aMode) {
54 MOZ_COUNT_CTOR(nsHtml5HtmlAttributes);
55 }
56
~nsHtml5HtmlAttributes()57 nsHtml5HtmlAttributes::~nsHtml5HtmlAttributes() {
58 MOZ_COUNT_DTOR(nsHtml5HtmlAttributes);
59 clear(0);
60 }
61
getIndex(nsHtml5AttributeName * aName)62 int32_t nsHtml5HtmlAttributes::getIndex(nsHtml5AttributeName* aName) {
63 for (size_t i = 0; i < mStorage.Length(); i++) {
64 if (mStorage[i].GetLocal(nsHtml5AttributeName::HTML) ==
65 aName->getLocal(nsHtml5AttributeName::HTML)) {
66 // It's release asserted elsewhere that i can't be too large.
67 return i;
68 }
69 }
70 return -1;
71 }
72
getValue(nsHtml5AttributeName * aName)73 nsHtml5String nsHtml5HtmlAttributes::getValue(nsHtml5AttributeName* aName) {
74 int32_t index = getIndex(aName);
75 if (index == -1) {
76 return nullptr;
77 } else {
78 return getValueNoBoundsCheck(index);
79 }
80 }
81
getLength()82 int32_t nsHtml5HtmlAttributes::getLength() { return mStorage.Length(); }
83
getLocalNameNoBoundsCheck(int32_t aIndex)84 nsAtom* nsHtml5HtmlAttributes::getLocalNameNoBoundsCheck(int32_t aIndex) {
85 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
86 "Index out of bounds");
87 return mStorage[aIndex].GetLocal(mMode);
88 }
89
getURINoBoundsCheck(int32_t aIndex)90 int32_t nsHtml5HtmlAttributes::getURINoBoundsCheck(int32_t aIndex) {
91 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
92 "Index out of bounds");
93 return mStorage[aIndex].GetUri(mMode);
94 }
95
getPrefixNoBoundsCheck(int32_t aIndex)96 nsAtom* nsHtml5HtmlAttributes::getPrefixNoBoundsCheck(int32_t aIndex) {
97 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
98 "Index out of bounds");
99 return mStorage[aIndex].GetPrefix(mMode);
100 }
101
getValueNoBoundsCheck(int32_t aIndex)102 nsHtml5String nsHtml5HtmlAttributes::getValueNoBoundsCheck(int32_t aIndex) {
103 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
104 "Index out of bounds");
105 return mStorage[aIndex].GetValue();
106 }
107
getLineNoBoundsCheck(int32_t aIndex)108 int32_t nsHtml5HtmlAttributes::getLineNoBoundsCheck(int32_t aIndex) {
109 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
110 "Index out of bounds");
111 return mStorage[aIndex].GetLine();
112 }
113
addAttribute(nsHtml5AttributeName * aName,nsHtml5String aValue,int32_t aLine)114 void nsHtml5HtmlAttributes::addAttribute(nsHtml5AttributeName* aName,
115 nsHtml5String aValue, int32_t aLine) {
116 mStorage.AppendElement(nsHtml5AttributeEntry(aName, aValue, aLine));
117 MOZ_RELEASE_ASSERT(mStorage.Length() <= INT32_MAX,
118 "Can't handle this many attributes.");
119 }
120
121 // Isindex-only, so doesn't need to deal with SVG and MathML
AddAttributeWithLocal(nsAtom * aName,nsHtml5String aValue,int32_t aLine)122 void nsHtml5HtmlAttributes::AddAttributeWithLocal(nsAtom* aName,
123 nsHtml5String aValue,
124 int32_t aLine) {
125 mStorage.AppendElement(nsHtml5AttributeEntry(aName, aValue, aLine));
126 MOZ_RELEASE_ASSERT(mStorage.Length() <= INT32_MAX,
127 "Can't handle this many attributes.");
128 }
129
clear(int32_t aMode)130 void nsHtml5HtmlAttributes::clear(int32_t aMode) {
131 for (nsHtml5AttributeEntry& entry : mStorage) {
132 entry.ReleaseValue();
133 }
134 mStorage.TruncateLength(0);
135 mMode = aMode;
136 }
137
releaseValue(int32_t aIndex)138 void nsHtml5HtmlAttributes::releaseValue(int32_t aIndex) {
139 mStorage[aIndex].ReleaseValue();
140 }
141
clearWithoutReleasingContents()142 void nsHtml5HtmlAttributes::clearWithoutReleasingContents() {
143 mStorage.TruncateLength(0);
144 }
145
contains(nsHtml5AttributeName * aName)146 bool nsHtml5HtmlAttributes::contains(nsHtml5AttributeName* aName) {
147 for (size_t i = 0; i < mStorage.Length(); i++) {
148 if (mStorage[i].GetLocal(nsHtml5AttributeName::HTML) ==
149 aName->getLocal(nsHtml5AttributeName::HTML)) {
150 return true;
151 }
152 }
153 return false;
154 }
155
adjustForMath()156 void nsHtml5HtmlAttributes::adjustForMath() {
157 mMode = nsHtml5AttributeName::MATHML;
158 }
159
adjustForSvg()160 void nsHtml5HtmlAttributes::adjustForSvg() {
161 mMode = nsHtml5AttributeName::SVG;
162 }
163
cloneAttributes()164 nsHtml5HtmlAttributes* nsHtml5HtmlAttributes::cloneAttributes() {
165 MOZ_ASSERT(mStorage.IsEmpty() || !mMode);
166 nsHtml5HtmlAttributes* clone =
167 new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML);
168 for (nsHtml5AttributeEntry& entry : mStorage) {
169 clone->AddEntry(entry.Clone());
170 }
171 return clone;
172 }
173
equalsAnother(nsHtml5HtmlAttributes * aOther)174 bool nsHtml5HtmlAttributes::equalsAnother(nsHtml5HtmlAttributes* aOther) {
175 MOZ_ASSERT(!mMode, "Trying to compare attributes in foreign content.");
176 if (mStorage.Length() != aOther->mStorage.Length()) {
177 return false;
178 }
179 for (nsHtml5AttributeEntry& entry : mStorage) {
180 bool found = false;
181 nsAtom* ownLocal = entry.GetLocal(nsHtml5AttributeName::HTML);
182 for (nsHtml5AttributeEntry& otherEntry : aOther->mStorage) {
183 if (ownLocal == otherEntry.GetLocal(nsHtml5AttributeName::HTML)) {
184 found = true;
185 if (!entry.GetValue().Equals(otherEntry.GetValue())) {
186 return false;
187 }
188 break;
189 }
190 }
191 if (!found) {
192 return false;
193 }
194 }
195 return true;
196 }
197
AddEntry(nsHtml5AttributeEntry && aEntry)198 void nsHtml5HtmlAttributes::AddEntry(nsHtml5AttributeEntry&& aEntry) {
199 mStorage.AppendElement(aEntry);
200 }
201
initializeStatics()202 void nsHtml5HtmlAttributes::initializeStatics() {
203 EMPTY_ATTRIBUTES = new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML);
204 }
205
releaseStatics()206 void nsHtml5HtmlAttributes::releaseStatics() { delete EMPTY_ATTRIBUTES; }
207