nsHtml5HtmlAttributes.cpp (7428B)
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 52 nsHtml5HtmlAttributes::nsHtml5HtmlAttributes(int32_t aMode) : mMode(aMode) { 53 MOZ_COUNT_CTOR(nsHtml5HtmlAttributes); 54 } 55 56 nsHtml5HtmlAttributes::~nsHtml5HtmlAttributes() { 57 MOZ_COUNT_DTOR(nsHtml5HtmlAttributes); 58 clear(0); 59 } 60 61 int32_t nsHtml5HtmlAttributes::getIndex(nsHtml5AttributeName* aName) { 62 size_t len = mStorage.Length(); 63 for (size_t i = 0; i < len; i++) { 64 if (mStorage.Elements()[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 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 82 int32_t nsHtml5HtmlAttributes::getLength() { return mStorage.Length(); } 83 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.Elements()[aIndex].GetLocal(mMode); 88 } 89 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.Elements()[aIndex].GetUri(mMode); 94 } 95 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.Elements()[aIndex].GetPrefix(mMode); 100 } 101 102 nsHtml5String nsHtml5HtmlAttributes::getValueNoBoundsCheck(int32_t aIndex) { 103 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0, 104 "Index out of bounds"); 105 return mStorage.Elements()[aIndex].GetValue(); 106 } 107 108 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.Elements()[aIndex].GetLine(); 112 } 113 114 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 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 } 129 130 void nsHtml5HtmlAttributes::clear(int32_t aMode) { 131 size_t len = mStorage.Length(); 132 for (size_t i = 0; i < len; ++i) { 133 nsHtml5AttributeEntry& entry = mStorage.Elements()[i]; 134 entry.ReleaseValue(); 135 } 136 mStorage.TruncateLength(0); 137 mMode = aMode; 138 mDuplicateAttributeError = false; 139 } 140 141 void nsHtml5HtmlAttributes::releaseValue(int32_t aIndex) { 142 MOZ_ASSERT(aIndex < int32_t(mStorage.Length()) && aIndex >= 0, 143 "Index out of bounds"); 144 mStorage.Elements()[aIndex].ReleaseValue(); 145 } 146 147 void nsHtml5HtmlAttributes::clearWithoutReleasingContents() { 148 mStorage.TruncateLength(0); 149 } 150 151 bool nsHtml5HtmlAttributes::contains(nsHtml5AttributeName* aName) { 152 size_t len = mStorage.Length(); 153 for (size_t i = 0; i < len; i++) { 154 if (mStorage.Elements()[i].GetLocal(nsHtml5AttributeName::HTML) == 155 aName->getLocal(nsHtml5AttributeName::HTML)) { 156 return true; 157 } 158 } 159 return false; 160 } 161 162 void nsHtml5HtmlAttributes::adjustForMath() { 163 mMode = nsHtml5AttributeName::MATHML; 164 } 165 166 void nsHtml5HtmlAttributes::adjustForSvg() { 167 mMode = nsHtml5AttributeName::SVG; 168 } 169 170 nsHtml5HtmlAttributes* nsHtml5HtmlAttributes::cloneAttributes() { 171 MOZ_ASSERT(mStorage.IsEmpty() || !mMode); 172 nsHtml5HtmlAttributes* clone = 173 new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML); 174 size_t len = mStorage.Length(); 175 for (size_t i = 0; i < len; ++i) { 176 nsHtml5AttributeEntry& entry = mStorage.Elements()[i]; 177 clone->AddEntry(entry.Clone()); 178 } 179 return clone; 180 } 181 182 bool nsHtml5HtmlAttributes::equalsAnother(nsHtml5HtmlAttributes* aOther) { 183 MOZ_ASSERT(!mMode, "Trying to compare attributes in foreign content."); 184 size_t len = mStorage.Length(); 185 size_t lenOther = aOther->mStorage.Length(); 186 if (mStorage.Length() != aOther->mStorage.Length()) { 187 return false; 188 } 189 for (size_t i = 0; i < len; ++i) { 190 nsHtml5AttributeEntry& entry = mStorage.Elements()[i]; 191 bool found = false; 192 nsAtom* ownLocal = entry.GetLocal(nsHtml5AttributeName::HTML); 193 for (size_t j = 0; j < lenOther; ++j) { 194 nsHtml5AttributeEntry& otherEntry = aOther->mStorage.Elements()[j]; 195 if (ownLocal == otherEntry.GetLocal(nsHtml5AttributeName::HTML)) { 196 found = true; 197 if (!entry.GetValue().Equals(otherEntry.GetValue())) { 198 return false; 199 } 200 break; 201 } 202 } 203 if (!found) { 204 return false; 205 } 206 } 207 return true; 208 } 209 210 void nsHtml5HtmlAttributes::AddEntry(nsHtml5AttributeEntry&& aEntry) { 211 mStorage.AppendElement(aEntry); 212 } 213 214 void nsHtml5HtmlAttributes::initializeStatics() { 215 EMPTY_ATTRIBUTES = new nsHtml5HtmlAttributes(nsHtml5AttributeName::HTML); 216 } 217 218 void nsHtml5HtmlAttributes::releaseStatics() { delete EMPTY_ATTRIBUTES; }