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/* -*- 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
/*
* 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 "nsAtom.h"
#include "nsDOMString.h"
#include "nsCRT.h"
#include "nsINode.h"
#include "nsContentUtils.h"
#include "nsReadableUtils.h"
#include "mozilla/Sprintf.h"
#include "mozilla/dom/Document.h"
#include "nsGkAtoms.h"
#include "nsCCUncollectableMarker.h"
#include "nsNameSpaceManager.h"
using namespace mozilla;
using mozilla::dom::NodeInfo;
NodeInfo::~NodeInfo() {
mOwnerManager->RemoveNodeInfo(this);
// We can't use NS_IF_RELEASE because mName is const.
if (mInner.mName) {
mInner.mName->Release();
}
NS_IF_RELEASE(mInner.mPrefix);
NS_IF_RELEASE(mInner.mExtraName);
}
NodeInfo::NodeInfo(nsAtom* aName, nsAtom* aPrefix, int32_t aNamespaceID,
uint16_t aNodeType, nsAtom* aExtraName,
nsNodeInfoManager* aOwnerManager)
: mDocument(aOwnerManager->GetDocument()),
mInner(aName, aPrefix, aNamespaceID, aNodeType, aExtraName),
mOwnerManager(aOwnerManager) {
CheckValidNodeInfo(aNodeType, aName, aNamespaceID, aExtraName);
NS_IF_ADDREF(mInner.mName);
NS_IF_ADDREF(mInner.mPrefix);
NS_IF_ADDREF(mInner.mExtraName);
// 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) + u":"_ns +
nsDependentAtomString(mInner.mName);
} else {
mInner.mName->ToString(mQualifiedName);
}
MOZ_ASSERT_IF(aNodeType != nsINode::ELEMENT_NODE &&
aNodeType != nsINode::ATTRIBUTE_NODE &&
aNodeType != UINT16_MAX,
aNamespaceID == kNameSpaceID_None && !aPrefix);
switch (aNodeType) {
case nsINode::ELEMENT_NODE:
case nsINode::ATTRIBUTE_NODE:
// Correct the case for HTML
if (aNodeType == nsINode::ELEMENT_NODE &&
aNamespaceID == kNameSpaceID_XHTML && GetDocument() &&
GetDocument()->IsHTMLDocument()) {
nsContentUtils::ASCIIToUpper(mQualifiedName, mNodeName);
} else {
mNodeName = mQualifiedName;
}
mInner.mName->ToString(mLocalName);
break;
case nsINode::TEXT_NODE:
case nsINode::CDATA_SECTION_NODE:
case nsINode::COMMENT_NODE:
case nsINode::DOCUMENT_NODE:
case nsINode::DOCUMENT_FRAGMENT_NODE:
mInner.mName->ToString(mNodeName);
SetDOMStringToNull(mLocalName);
break;
case nsINode::PROCESSING_INSTRUCTION_NODE:
case nsINode::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)
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());
const char* nsuri = nsNameSpaceManager::GetNameSpaceDisplayName(nsid);
SprintfLiteral(name, "NodeInfo %s %s", nsuri, 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
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 = nsNameSpaceManager::GetInstance()->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 = nsNameSpaceManager::GetInstance()->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());
}