content/base/src/nsNodeInfo.cpp@deefc01c0e14 (annotated)
content/base/src/nsNodeInfo.cpp
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | /* |
| michael@0 | 8 | * Class that represents a prefix/namespace/localName triple; a single |
| michael@0 | 9 | * nodeinfo is shared by all elements in a document that have that |
| michael@0 | 10 | * prefix, namespace, and localName. |
| michael@0 | 11 | */ |
| michael@0 | 12 | |
| michael@0 | 13 | #include "mozilla/ArrayUtils.h" |
| michael@0 | 14 | #include "mozilla/Likely.h" |
| michael@0 | 15 | |
| michael@0 | 16 | #include "nscore.h" |
| michael@0 | 17 | #include "nsNodeInfo.h" |
| michael@0 | 18 | #include "nsNodeInfoManager.h" |
| michael@0 | 19 | #include "nsCOMPtr.h" |
| michael@0 | 20 | #include "nsString.h" |
| michael@0 | 21 | #include "nsIAtom.h" |
| michael@0 | 22 | #include "nsDOMString.h" |
| michael@0 | 23 | #include "nsCRT.h" |
| michael@0 | 24 | #include "nsContentUtils.h" |
| michael@0 | 25 | #include "nsReadableUtils.h" |
| michael@0 | 26 | #include "nsAutoPtr.h" |
| michael@0 | 27 | #include "prprf.h" |
| michael@0 | 28 | #include "nsIDocument.h" |
| michael@0 | 29 | #include "nsGkAtoms.h" |
| michael@0 | 30 | #include "nsCCUncollectableMarker.h" |
| michael@0 | 31 | |
| michael@0 | 32 | using namespace mozilla; |
| michael@0 | 33 | |
| michael@0 | 34 | nsNodeInfo::~nsNodeInfo() |
| michael@0 | 35 | { |
| michael@0 | 36 | mOwnerManager->RemoveNodeInfo(this); |
| michael@0 | 37 | |
| michael@0 | 38 | NS_RELEASE(mInner.mName); |
| michael@0 | 39 | NS_IF_RELEASE(mInner.mPrefix); |
| michael@0 | 40 | NS_IF_RELEASE(mInner.mExtraName); |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | |
| michael@0 | 44 | nsNodeInfo::nsNodeInfo(nsIAtom *aName, nsIAtom *aPrefix, int32_t aNamespaceID, |
| michael@0 | 45 | uint16_t aNodeType, nsIAtom* aExtraName, |
| michael@0 | 46 | nsNodeInfoManager *aOwnerManager) |
| michael@0 | 47 | { |
| michael@0 | 48 | CheckValidNodeInfo(aNodeType, aName, aNamespaceID, aExtraName); |
| michael@0 | 49 | NS_ABORT_IF_FALSE(aOwnerManager, "Invalid aOwnerManager"); |
| michael@0 | 50 | |
| michael@0 | 51 | // Initialize mInner |
| michael@0 | 52 | NS_ADDREF(mInner.mName = aName); |
| michael@0 | 53 | NS_IF_ADDREF(mInner.mPrefix = aPrefix); |
| michael@0 | 54 | mInner.mNamespaceID = aNamespaceID; |
| michael@0 | 55 | mInner.mNodeType = aNodeType; |
| michael@0 | 56 | mOwnerManager = aOwnerManager; |
| michael@0 | 57 | NS_IF_ADDREF(mInner.mExtraName = aExtraName); |
| michael@0 | 58 | |
| michael@0 | 59 | mDocument = aOwnerManager->GetDocument(); |
| michael@0 | 60 | |
| michael@0 | 61 | // Now compute our cached members. |
| michael@0 | 62 | |
| michael@0 | 63 | // Qualified name. If we have no prefix, use ToString on |
| michael@0 | 64 | // mInner.mName so that we get to share its buffer. |
| michael@0 | 65 | if (aPrefix) { |
| michael@0 | 66 | mQualifiedName = nsDependentAtomString(mInner.mPrefix) + |
| michael@0 | 67 | NS_LITERAL_STRING(":") + |
| michael@0 | 68 | nsDependentAtomString(mInner.mName); |
| michael@0 | 69 | } else { |
| michael@0 | 70 | mInner.mName->ToString(mQualifiedName); |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | MOZ_ASSERT_IF(aNodeType != nsIDOMNode::ELEMENT_NODE && |
| michael@0 | 74 | aNodeType != nsIDOMNode::ATTRIBUTE_NODE && |
| michael@0 | 75 | aNodeType != UINT16_MAX, |
| michael@0 | 76 | aNamespaceID == kNameSpaceID_None && !aPrefix); |
| michael@0 | 77 | |
| michael@0 | 78 | switch (aNodeType) { |
| michael@0 | 79 | case nsIDOMNode::ELEMENT_NODE: |
| michael@0 | 80 | case nsIDOMNode::ATTRIBUTE_NODE: |
| michael@0 | 81 | // Correct the case for HTML |
| michael@0 | 82 | if (aNodeType == nsIDOMNode::ELEMENT_NODE && |
| michael@0 | 83 | aNamespaceID == kNameSpaceID_XHTML && GetDocument() && |
| michael@0 | 84 | GetDocument()->IsHTML()) { |
| michael@0 | 85 | nsContentUtils::ASCIIToUpper(mQualifiedName, mNodeName); |
| michael@0 | 86 | } else { |
| michael@0 | 87 | mNodeName = mQualifiedName; |
| michael@0 | 88 | } |
| michael@0 | 89 | mInner.mName->ToString(mLocalName); |
| michael@0 | 90 | break; |
| michael@0 | 91 | case nsIDOMNode::TEXT_NODE: |
| michael@0 | 92 | case nsIDOMNode::CDATA_SECTION_NODE: |
| michael@0 | 93 | case nsIDOMNode::COMMENT_NODE: |
| michael@0 | 94 | case nsIDOMNode::DOCUMENT_NODE: |
| michael@0 | 95 | case nsIDOMNode::DOCUMENT_FRAGMENT_NODE: |
| michael@0 | 96 | mInner.mName->ToString(mNodeName); |
| michael@0 | 97 | SetDOMStringToNull(mLocalName); |
| michael@0 | 98 | break; |
| michael@0 | 99 | case nsIDOMNode::PROCESSING_INSTRUCTION_NODE: |
| michael@0 | 100 | case nsIDOMNode::DOCUMENT_TYPE_NODE: |
| michael@0 | 101 | mInner.mExtraName->ToString(mNodeName); |
| michael@0 | 102 | SetDOMStringToNull(mLocalName); |
| michael@0 | 103 | break; |
| michael@0 | 104 | default: |
| michael@0 | 105 | NS_ABORT_IF_FALSE(aNodeType == UINT16_MAX, |
| michael@0 | 106 | "Unknown node type"); |
| michael@0 | 107 | } |
| michael@0 | 108 | } |
| michael@0 | 109 | |
| michael@0 | 110 | |
| michael@0 | 111 | // nsISupports |
| michael@0 | 112 | |
| michael@0 | 113 | NS_IMPL_CYCLE_COLLECTION_CLASS(nsNodeInfo) |
| michael@0 | 114 | |
| michael@0 | 115 | NS_IMPL_CYCLE_COLLECTION_UNLINK_0(nsNodeInfo) |
| michael@0 | 116 | |
| michael@0 | 117 | static const char* kNSURIs[] = { |
| michael@0 | 118 | " ([none])", |
| michael@0 | 119 | " (xmlns)", |
| michael@0 | 120 | " (xml)", |
| michael@0 | 121 | " (xhtml)", |
| michael@0 | 122 | " (XLink)", |
| michael@0 | 123 | " (XSLT)", |
| michael@0 | 124 | " (XBL)", |
| michael@0 | 125 | " (MathML)", |
| michael@0 | 126 | " (RDF)", |
| michael@0 | 127 | " (XUL)" |
| michael@0 | 128 | }; |
| michael@0 | 129 | |
| michael@0 | 130 | NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsNodeInfo) |
| michael@0 | 131 | if (MOZ_UNLIKELY(cb.WantDebugInfo())) { |
| michael@0 | 132 | char name[72]; |
| michael@0 | 133 | uint32_t nsid = tmp->NamespaceID(); |
| michael@0 | 134 | nsAtomCString localName(tmp->NameAtom()); |
| michael@0 | 135 | if (nsid < ArrayLength(kNSURIs)) { |
| michael@0 | 136 | PR_snprintf(name, sizeof(name), "nsNodeInfo%s %s", kNSURIs[nsid], |
| michael@0 | 137 | localName.get()); |
| michael@0 | 138 | } |
| michael@0 | 139 | else { |
| michael@0 | 140 | PR_snprintf(name, sizeof(name), "nsNodeInfo %s", localName.get()); |
| michael@0 | 141 | } |
| michael@0 | 142 | |
| michael@0 | 143 | cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name); |
| michael@0 | 144 | } |
| michael@0 | 145 | else { |
| michael@0 | 146 | NS_IMPL_CYCLE_COLLECTION_DESCRIBE(nsNodeInfo, tmp->mRefCnt.get()) |
| michael@0 | 147 | } |
| michael@0 | 148 | |
| michael@0 | 149 | NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwnerManager) |
| michael@0 | 150 | NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END |
| michael@0 | 151 | |
| michael@0 | 152 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(nsNodeInfo) |
| michael@0 | 153 | return nsCCUncollectableMarker::sGeneration && tmp->CanSkip(); |
| michael@0 | 154 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END |
| michael@0 | 155 | |
| michael@0 | 156 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(nsNodeInfo) |
| michael@0 | 157 | return nsCCUncollectableMarker::sGeneration && tmp->CanSkip(); |
| michael@0 | 158 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END |
| michael@0 | 159 | |
| michael@0 | 160 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(nsNodeInfo) |
| michael@0 | 161 | return nsCCUncollectableMarker::sGeneration && tmp->CanSkip(); |
| michael@0 | 162 | NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END |
| michael@0 | 163 | |
| michael@0 | 164 | |
| michael@0 | 165 | NS_IMPL_CYCLE_COLLECTING_ADDREF(nsNodeInfo) |
| michael@0 | 166 | NS_IMPL_CYCLE_COLLECTING_RELEASE_WITH_DESTROY(nsNodeInfo, LastRelease()) |
| michael@0 | 167 | NS_INTERFACE_TABLE_HEAD(nsNodeInfo) |
| michael@0 | 168 | NS_INTERFACE_TABLE(nsNodeInfo, nsINodeInfo) |
| michael@0 | 169 | NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(nsNodeInfo) |
| michael@0 | 170 | NS_INTERFACE_MAP_END |
| michael@0 | 171 | |
| michael@0 | 172 | // nsINodeInfo |
| michael@0 | 173 | |
| michael@0 | 174 | void |
| michael@0 | 175 | nsNodeInfo::GetNamespaceURI(nsAString& aNameSpaceURI) const |
| michael@0 | 176 | { |
| michael@0 | 177 | if (mInner.mNamespaceID > 0) { |
| michael@0 | 178 | nsresult rv = |
| michael@0 | 179 | nsContentUtils::NameSpaceManager()->GetNameSpaceURI(mInner.mNamespaceID, |
| michael@0 | 180 | aNameSpaceURI); |
| michael@0 | 181 | // How can we possibly end up with a bogus namespace ID here? |
| michael@0 | 182 | if (NS_FAILED(rv)) { |
| michael@0 | 183 | MOZ_CRASH(); |
| michael@0 | 184 | } |
| michael@0 | 185 | } else { |
| michael@0 | 186 | SetDOMStringToNull(aNameSpaceURI); |
| michael@0 | 187 | } |
| michael@0 | 188 | } |
| michael@0 | 189 | |
| michael@0 | 190 | |
| michael@0 | 191 | bool |
| michael@0 | 192 | nsNodeInfo::NamespaceEquals(const nsAString& aNamespaceURI) const |
| michael@0 | 193 | { |
| michael@0 | 194 | int32_t nsid = |
| michael@0 | 195 | nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI); |
| michael@0 | 196 | |
| michael@0 | 197 | return nsINodeInfo::NamespaceEquals(nsid); |
| michael@0 | 198 | } |
| michael@0 | 199 | |
| michael@0 | 200 | void |
| michael@0 | 201 | nsNodeInfo::LastRelease() |
| michael@0 | 202 | { |
| michael@0 | 203 | nsRefPtr<nsNodeInfoManager> kungFuDeathGrip = mOwnerManager; |
| michael@0 | 204 | delete this; |
| michael@0 | 205 | } |
| michael@0 | 206 | |
| michael@0 | 207 | bool |
| michael@0 | 208 | nsNodeInfo::CanSkip() |
| michael@0 | 209 | { |
| michael@0 | 210 | return mDocument && |
| michael@0 | 211 | nsCCUncollectableMarker::InGeneration(mDocument->GetMarkedCCGeneration()); |
| michael@0 | 212 | } |
