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d225f7151b
(Path is actually r=froydnj.) Bug 1400459 devirtualized nsIAtom so that it is no longer a subclass of nsISupports. This means that nsAtom is now a better name for it than nsIAtom. MozReview-Commit-ID: 91U22X2NydP --HG-- rename : xpcom/ds/nsIAtom.h => xpcom/ds/nsAtom.h extra : rebase_source : ac3e904a21b8b48e74534fff964f1623ee937c67
223 lines
6.2 KiB
C++
223 lines
6.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Class that represents a prefix/namespace/localName triple; a single
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* nodeinfo is shared by all elements in a document that have that
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* prefix, namespace, and localName.
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*/
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#include "mozilla/dom/NodeInfo.h"
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#include "mozilla/dom/NodeInfoInlines.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Likely.h"
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#include "nsNodeInfoManager.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#include "nsAtom.h"
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#include "nsDOMString.h"
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#include "nsCRT.h"
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#include "nsContentUtils.h"
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#include "nsReadableUtils.h"
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#include "mozilla/Sprintf.h"
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#include "nsIDocument.h"
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#include "nsGkAtoms.h"
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#include "nsCCUncollectableMarker.h"
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#include "nsNameSpaceManager.h"
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using namespace mozilla;
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using mozilla::dom::NodeInfo;
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NodeInfo::~NodeInfo()
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{
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mOwnerManager->RemoveNodeInfo(this);
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// We can't use NS_IF_RELEASE because mName is const.
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if (mInner.mName) {
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mInner.mName->Release();
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}
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NS_IF_RELEASE(mInner.mPrefix);
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NS_IF_RELEASE(mInner.mExtraName);
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}
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NodeInfo::NodeInfo(nsAtom *aName, nsAtom *aPrefix, int32_t aNamespaceID,
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uint16_t aNodeType, nsAtom* aExtraName,
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nsNodeInfoManager *aOwnerManager)
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: mDocument(aOwnerManager->GetDocument()),
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mInner(aName, aPrefix, aNamespaceID, aNodeType, aExtraName),
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mOwnerManager(aOwnerManager)
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{
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CheckValidNodeInfo(aNodeType, aName, aNamespaceID, aExtraName);
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NS_IF_ADDREF(mInner.mName);
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NS_IF_ADDREF(mInner.mPrefix);
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NS_IF_ADDREF(mInner.mExtraName);
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// Now compute our cached members.
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// Qualified name. If we have no prefix, use ToString on
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// mInner.mName so that we get to share its buffer.
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if (aPrefix) {
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mQualifiedName = nsDependentAtomString(mInner.mPrefix) +
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NS_LITERAL_STRING(":") +
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nsDependentAtomString(mInner.mName);
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} else {
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mInner.mName->ToString(mQualifiedName);
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}
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MOZ_ASSERT_IF(aNodeType != nsIDOMNode::ELEMENT_NODE &&
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aNodeType != nsIDOMNode::ATTRIBUTE_NODE &&
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aNodeType != UINT16_MAX,
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aNamespaceID == kNameSpaceID_None && !aPrefix);
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switch (aNodeType) {
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case nsIDOMNode::ELEMENT_NODE:
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case nsIDOMNode::ATTRIBUTE_NODE:
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// Correct the case for HTML
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if (aNodeType == nsIDOMNode::ELEMENT_NODE &&
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aNamespaceID == kNameSpaceID_XHTML && GetDocument() &&
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GetDocument()->IsHTMLDocument()) {
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nsContentUtils::ASCIIToUpper(mQualifiedName, mNodeName);
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} else {
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mNodeName = mQualifiedName;
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}
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mInner.mName->ToString(mLocalName);
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break;
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case nsIDOMNode::TEXT_NODE:
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case nsIDOMNode::CDATA_SECTION_NODE:
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case nsIDOMNode::COMMENT_NODE:
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case nsIDOMNode::DOCUMENT_NODE:
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case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
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mInner.mName->ToString(mNodeName);
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SetDOMStringToNull(mLocalName);
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break;
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case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
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case nsIDOMNode::DOCUMENT_TYPE_NODE:
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mInner.mExtraName->ToString(mNodeName);
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SetDOMStringToNull(mLocalName);
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break;
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default:
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MOZ_ASSERT(aNodeType == UINT16_MAX, "Unknown node type");
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}
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}
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// nsISupports
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NS_IMPL_CYCLE_COLLECTION_CLASS(NodeInfo)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_0(NodeInfo)
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static const char* kNodeInfoNSURIs[] = {
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" ([none])",
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" (xmlns)",
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" (xml)",
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" (xhtml)",
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" (XLink)",
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" (XSLT)",
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" (XBL)",
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" (MathML)",
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" (RDF)",
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" (XUL)"
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};
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(NodeInfo)
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if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
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char name[72];
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uint32_t nsid = tmp->NamespaceID();
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nsAtomCString localName(tmp->NameAtom());
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if (nsid < ArrayLength(kNodeInfoNSURIs)) {
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SprintfLiteral(name, "NodeInfo%s %s", kNodeInfoNSURIs[nsid],
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localName.get());
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}
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else {
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SprintfLiteral(name, "NodeInfo %s", localName.get());
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}
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cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name);
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}
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else {
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NS_IMPL_CYCLE_COLLECTION_DESCRIBE(NodeInfo, tmp->mRefCnt.get())
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwnerManager)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(NodeInfo)
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return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(NodeInfo)
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return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(NodeInfo)
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return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
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NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
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NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(NodeInfo, AddRef)
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NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(NodeInfo, Release)
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void
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NodeInfo::GetName(nsAString& aName) const
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{
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mInner.mName->ToString(aName);
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}
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void
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NodeInfo::GetPrefix(nsAString& aPrefix) const
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{
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if (mInner.mPrefix) {
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mInner.mPrefix->ToString(aPrefix);
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} else {
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SetDOMStringToNull(aPrefix);
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}
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}
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void
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NodeInfo::GetNamespaceURI(nsAString& aNameSpaceURI) const
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{
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if (mInner.mNamespaceID > 0) {
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nsresult rv =
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nsContentUtils::NameSpaceManager()->GetNameSpaceURI(mInner.mNamespaceID,
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aNameSpaceURI);
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// How can we possibly end up with a bogus namespace ID here?
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if (NS_FAILED(rv)) {
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MOZ_CRASH();
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}
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} else {
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SetDOMStringToNull(aNameSpaceURI);
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}
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}
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bool
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NodeInfo::NamespaceEquals(const nsAString& aNamespaceURI) const
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{
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int32_t nsid =
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nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI,
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nsContentUtils::IsChromeDoc(mOwnerManager->GetDocument()));
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return mozilla::dom::NodeInfo::NamespaceEquals(nsid);
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}
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void
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NodeInfo::DeleteCycleCollectable()
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{
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RefPtr<nsNodeInfoManager> kungFuDeathGrip = mOwnerManager;
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mozilla::Unused << kungFuDeathGrip; // Just keeping value alive for longer than this
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delete this;
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}
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bool
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NodeInfo::CanSkip()
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{
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return mDocument &&
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nsCCUncollectableMarker::InGeneration(mDocument->GetMarkedCCGeneration());
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}
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