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-rw-r--r--dom/base/NodeInfo.cpp219
1 files changed, 219 insertions, 0 deletions
diff --git a/dom/base/NodeInfo.cpp b/dom/base/NodeInfo.cpp
new file mode 100644
index 000000000..d32a00fd3
--- /dev/null
+++ b/dom/base/NodeInfo.cpp
@@ -0,0 +1,219 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Class that represents a prefix/namespace/localName triple; a single
+ * nodeinfo is shared by all elements in a document that have that
+ * prefix, namespace, and localName.
+ */
+
+#include "mozilla/dom/NodeInfo.h"
+#include "mozilla/dom/NodeInfoInlines.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Likely.h"
+
+#include "nsNodeInfoManager.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsIAtom.h"
+#include "nsDOMString.h"
+#include "nsCRT.h"
+#include "nsContentUtils.h"
+#include "nsReadableUtils.h"
+#include "mozilla/Sprintf.h"
+#include "nsIDocument.h"
+#include "nsGkAtoms.h"
+#include "nsCCUncollectableMarker.h"
+#include "nsNameSpaceManager.h"
+
+using namespace mozilla;
+using mozilla::dom::NodeInfo;
+
+NodeInfo::~NodeInfo()
+{
+ mOwnerManager->RemoveNodeInfo(this);
+}
+
+NodeInfo::NodeInfo(nsIAtom *aName, nsIAtom *aPrefix, int32_t aNamespaceID,
+ uint16_t aNodeType, nsIAtom* aExtraName,
+ nsNodeInfoManager *aOwnerManager)
+{
+ CheckValidNodeInfo(aNodeType, aName, aNamespaceID, aExtraName);
+ MOZ_ASSERT(aOwnerManager, "Invalid aOwnerManager");
+
+ // Initialize mInner
+ mInner.mName = aName;
+ mInner.mPrefix = aPrefix;
+ mInner.mNamespaceID = aNamespaceID;
+ mInner.mNodeType = aNodeType;
+ mOwnerManager = aOwnerManager;
+ mInner.mExtraName = aExtraName;
+
+ mDocument = aOwnerManager->GetDocument();
+
+ // Now compute our cached members.
+
+ // Qualified name. If we have no prefix, use ToString on
+ // mInner.mName so that we get to share its buffer.
+ if (aPrefix) {
+ mQualifiedName = nsDependentAtomString(mInner.mPrefix) +
+ NS_LITERAL_STRING(":") +
+ nsDependentAtomString(mInner.mName);
+ } else {
+ mInner.mName->ToString(mQualifiedName);
+ }
+
+ MOZ_ASSERT_IF(aNodeType != nsIDOMNode::ELEMENT_NODE &&
+ aNodeType != nsIDOMNode::ATTRIBUTE_NODE &&
+ aNodeType != UINT16_MAX,
+ aNamespaceID == kNameSpaceID_None && !aPrefix);
+
+ switch (aNodeType) {
+ case nsIDOMNode::ELEMENT_NODE:
+ case nsIDOMNode::ATTRIBUTE_NODE:
+ // Correct the case for HTML
+ if (aNodeType == nsIDOMNode::ELEMENT_NODE &&
+ aNamespaceID == kNameSpaceID_XHTML && GetDocument() &&
+ GetDocument()->IsHTMLDocument()) {
+ nsContentUtils::ASCIIToUpper(mQualifiedName, mNodeName);
+ } else {
+ mNodeName = mQualifiedName;
+ }
+ mInner.mName->ToString(mLocalName);
+ break;
+ case nsIDOMNode::TEXT_NODE:
+ case nsIDOMNode::CDATA_SECTION_NODE:
+ case nsIDOMNode::COMMENT_NODE:
+ case nsIDOMNode::DOCUMENT_NODE:
+ case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
+ mInner.mName->ToString(mNodeName);
+ SetDOMStringToNull(mLocalName);
+ break;
+ case nsIDOMNode::PROCESSING_INSTRUCTION_NODE:
+ case nsIDOMNode::DOCUMENT_TYPE_NODE:
+ mInner.mExtraName->ToString(mNodeName);
+ SetDOMStringToNull(mLocalName);
+ break;
+ default:
+ MOZ_ASSERT(aNodeType == UINT16_MAX, "Unknown node type");
+ }
+}
+
+
+// nsISupports
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(NodeInfo)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_0(NodeInfo)
+
+static const char* kNodeInfoNSURIs[] = {
+ " ([none])",
+ " (xmlns)",
+ " (xml)",
+ " (xhtml)",
+ " (XLink)",
+ " (XSLT)",
+ " (XBL)",
+ " (MathML)",
+ " (RDF)",
+ " (XUL)"
+};
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(NodeInfo)
+ if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
+ char name[72];
+ uint32_t nsid = tmp->NamespaceID();
+ nsAtomCString localName(tmp->NameAtom());
+ if (nsid < ArrayLength(kNodeInfoNSURIs)) {
+ SprintfLiteral(name, "NodeInfo%s %s", kNodeInfoNSURIs[nsid],
+ localName.get());
+ }
+ else {
+ SprintfLiteral(name, "NodeInfo %s", localName.get());
+ }
+
+ cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name);
+ }
+ else {
+ NS_IMPL_CYCLE_COLLECTION_DESCRIBE(NodeInfo, tmp->mRefCnt.get())
+ }
+
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwnerManager)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_BEGIN(NodeInfo)
+ return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_BEGIN(NodeInfo)
+ return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_IN_CC_END
+
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_BEGIN(NodeInfo)
+ return nsCCUncollectableMarker::sGeneration && tmp->CanSkip();
+NS_IMPL_CYCLE_COLLECTION_CAN_SKIP_THIS_END
+
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(NodeInfo, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(NodeInfo, Release)
+
+void
+NodeInfo::GetName(nsAString& aName) const
+{
+ mInner.mName->ToString(aName);
+}
+
+void
+NodeInfo::GetPrefix(nsAString& aPrefix) const
+{
+ if (mInner.mPrefix) {
+ mInner.mPrefix->ToString(aPrefix);
+ } else {
+ SetDOMStringToNull(aPrefix);
+ }
+}
+
+void
+NodeInfo::GetNamespaceURI(nsAString& aNameSpaceURI) const
+{
+ if (mInner.mNamespaceID > 0) {
+ nsresult rv =
+ nsContentUtils::NameSpaceManager()->GetNameSpaceURI(mInner.mNamespaceID,
+ aNameSpaceURI);
+ // How can we possibly end up with a bogus namespace ID here?
+ if (NS_FAILED(rv)) {
+ MOZ_CRASH();
+ }
+ } else {
+ SetDOMStringToNull(aNameSpaceURI);
+ }
+}
+
+bool
+NodeInfo::NamespaceEquals(const nsAString& aNamespaceURI) const
+{
+ int32_t nsid =
+ nsContentUtils::NameSpaceManager()->GetNameSpaceID(aNamespaceURI,
+ nsContentUtils::IsChromeDoc(mOwnerManager->GetDocument()));
+
+ return mozilla::dom::NodeInfo::NamespaceEquals(nsid);
+}
+
+void
+NodeInfo::DeleteCycleCollectable()
+{
+ RefPtr<nsNodeInfoManager> kungFuDeathGrip = mOwnerManager;
+ mozilla::Unused << kungFuDeathGrip; // Just keeping value alive for longer than this
+ delete this;
+}
+
+bool
+NodeInfo::CanSkip()
+{
+ return mDocument &&
+ nsCCUncollectableMarker::InGeneration(mDocument->GetMarkedCCGeneration());
+}