Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/C/Firefox/dom/base/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 5 kB

Quelle NodeInfo.cpp Sprache: C

/* -*- 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 "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());
}

quality100%

¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.