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 "nsHtml5Portability.h"
42 #include "nsHtml5StackNode.h"
43 #include "nsHtml5StateSnapshot.h"
44 #include "nsHtml5Tokenizer.h"
45 #include "nsHtml5TreeBuilder.h"
46 #include "nsHtml5UTF16Buffer.h"
47
48 #include "nsHtml5HtmlAttributes.h"
49
50 nsHtml5HtmlAttributes* nsHtml5HtmlAttributes::EMPTY_ATTRIBUTES = nullptr;
51
nsHtml5HtmlAttributes(int32_t aMode)52 nsHtml5HtmlAttributes::nsHtml5HtmlAttributes(int32_t aMode) : mMode(aMode) {
53 MOZ_COUNT_CTOR(nsHtml5HtmlAttributes);
54 }
55
~nsHtml5HtmlAttributes()56 nsHtml5HtmlAttributes::~nsHtml5HtmlAttributes() {
57 MOZ_COUNT_DTOR(nsHtml5HtmlAttributes);
58 clear(0);
59 }
60
getIndex(nsHtml5AttributeName * aName)61 int32_t nsHtml5HtmlAttributes::getIndex(nsHtml5AttributeName* aName) {
62 for (size_t i = 0; i < mStorage.Length(); i++) {
63 if (mStorage[i].GetLocal(nsHtml5AttributeName::HTML) ==
64 aName->getLocal(nsHtml5AttributeName::HTML)) {
65 // It's release asserted elsewhere that i can't be too large.
66 return i;
67 }
68 }
69 return -1;
70 }
71
getValue(nsHtml5AttributeName * aName)72 nsHtml5String nsHtml5HtmlAttributes::getValue(nsHtml5AttributeName* aName) {
73 int32_t index = getIndex(aName);
74 if (index == -1) {
75 return nullptr;
76 } else {
77 return getValueNoBoundsCheck(index);
78 }
79 }
80
getLength()81 int32_t nsHtml5HtmlAttributes::getLength() { return mStorage.Length(); }
82
getLocalNameNoBoundsCheck(int32_t aIndex)83 nsAtom* nsHtml5HtmlAttributes::getLocalNameNoBoundsCheck(int32_t aIndex) {
84 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
85 "Index out of bounds");
86 return mStorage[aIndex].GetLocal(mMode);
87 }
88
getURINoBoundsCheck(int32_t aIndex)89 int32_t nsHtml5HtmlAttributes::getURINoBoundsCheck(int32_t aIndex) {
90 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
91 "Index out of bounds");
92 return mStorage[aIndex].GetUri(mMode);
93 }
94
getPrefixNoBoundsCheck(int32_t aIndex)95 nsAtom* nsHtml5HtmlAttributes::getPrefixNoBoundsCheck(int32_t aIndex) {
96 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
97 "Index out of bounds");
98 return mStorage[aIndex].GetPrefix(mMode);
99 }
100
getValueNoBoundsCheck(int32_t aIndex)101 nsHtml5String nsHtml5HtmlAttributes::getValueNoBoundsCheck(int32_t aIndex) {
102 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
103 "Index out of bounds");
104 return mStorage[aIndex].GetValue();
105 }
106
getLineNoBoundsCheck(int32_t aIndex)107 int32_t nsHtml5HtmlAttributes::getLineNoBoundsCheck(int32_t aIndex) {
108 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0,
109 "Index out of bounds");
110 return mStorage[aIndex].GetLine();
111 }
112
addAttribute(nsHtml5AttributeName * aName,nsHtml5String aValue,int32_t aLine)113 void nsHtml5HtmlAttributes::addAttribute(nsHtml5AttributeName* aName,
114 nsHtml5String aValue, int32_t aLine) {
115 mStorage.AppendElement(nsHtml5AttributeEntry(aName, aValue, aLine));
116 MOZ_RELEASE_ASSERT(mStorage.Length() <= INT32_MAX,
117 "Can't handle this many attributes.");
118 }
119
120 // Isindex-only, so doesn't need to deal with SVG and MathML
AddAttributeWithLocal(nsAtom * aName,nsHtml5String aValue,int32_t aLine)121 void nsHtml5HtmlAttributes::AddAttributeWithLocal(nsAtom* aName,
122 nsHtml5String aValue,
123 int32_t aLine) {
124 mStorage.AppendElement(nsHtml5AttributeEntry(aName, aValue, aLine));
125 MOZ_RELEASE_ASSERT(mStorage.Length() <= INT32_MAX,
126 "Can't handle this many attributes.");
127 }
128
clear(int32_t aMode)129 void nsHtml5HtmlAttributes::clear(int32_t aMode) {
130 for (nsHtml5AttributeEntry& entry : mStorage) {
131 entry.ReleaseValue();
132 }
133 mStorage.TruncateLength(0);
134 mMode = aMode;
135 }
136
releaseValue(int32_t aIndex)137 void nsHtml5HtmlAttributes::releaseValue(int32_t aIndex) {
138 mStorage[aIndex].ReleaseValue();
139 }
140
clearWithoutReleasingContents()141 void nsHtml5HtmlAttributes::clearWithoutReleasingContents() {
142 mStorage.TruncateLength(0);
143 }
144
contains(nsHtml5AttributeName * aName)145 bool nsHtml5HtmlAttributes::contains(nsHtml5AttributeName* aName) {
146 for (size_t i = 0; i < mStorage.Length(); i++) {
147 if (mStorage[i].GetLocal(nsHtml5AttributeName::HTML) ==
148 aName->getLocal(nsHtml5AttributeName::HTML)) {
149 return true;
150 }
151 }
152 return false;
153 }
154
adjustForMath()155 void nsHtml5HtmlAttributes::adjustForMath() {
156 mMode = nsHtml5AttributeName::MATHML;
157 }
158
adjustForSvg()159 void nsHtml5HtmlAttributes::adjustForSvg() {
160 mMode = nsHtml5AttributeName::SVG;
161 }
162
cloneAttributes()163 nsHtml5HtmlAttributes* nsHtml5HtmlAttributes::cloneAttributes() {
164 MOZ_ASSERT(mStorage.IsEmpty() || !mMode);
165 nsHtml5HtmlAttributes* clone =
166 new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML);
167 for (nsHtml5AttributeEntry& entry : mStorage) {
168 clone->AddEntry(entry.Clone());
169 }
170 return clone;
171 }
172
equalsAnother(nsHtml5HtmlAttributes * aOther)173 bool nsHtml5HtmlAttributes::equalsAnother(nsHtml5HtmlAttributes* aOther) {
174 MOZ_ASSERT(!mMode, "Trying to compare attributes in foreign content.");
175 if (mStorage.Length() != aOther->mStorage.Length()) {
176 return false;
177 }
178 for (nsHtml5AttributeEntry& entry : mStorage) {
179 bool found = false;
180 nsAtom* ownLocal = entry.GetLocal(nsHtml5AttributeName::HTML);
181 for (nsHtml5AttributeEntry& otherEntry : aOther->mStorage) {
182 if (ownLocal == otherEntry.GetLocal(nsHtml5AttributeName::HTML)) {
183 found = true;
184 if (!entry.GetValue().Equals(otherEntry.GetValue())) {
185 return false;
186 }
187 break;
188 }
189 }
190 if (!found) {
191 return false;
192 }
193 }
194 return true;
195 }
196
AddEntry(nsHtml5AttributeEntry && aEntry)197 void nsHtml5HtmlAttributes::AddEntry(nsHtml5AttributeEntry&& aEntry) {
198 mStorage.AppendElement(aEntry);
199 }
200
initializeStatics()201 void nsHtml5HtmlAttributes::initializeStatics() {
202 EMPTY_ATTRIBUTES = new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML);
203 }
204
releaseStatics()205 void nsHtml5HtmlAttributes::releaseStatics() { delete EMPTY_ATTRIBUTES; }
206