Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 372 insertions, 0 deletions

diff --git a/dom/xml/nsXMLFragmentContentSink.cpp b/dom/xml/nsXMLFragmentContentSink.cpp
new file mode 100644
index 0000000000..ddf96793e4
--- /dev/null
+++ b/dom/xml/nsXMLFragmentContentSink.cpp
@@ -0,0 +1,372 @@
+/* -*- 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/. */
+
+#include "nsCOMPtr.h"
+#include "nsXMLContentSink.h"
+#include "nsIFragmentContentSink.h"
+#include "nsIXMLContentSink.h"
+#include "nsContentSink.h"
+#include "nsIExpatSink.h"
+#include "nsIDTD.h"
+#include "mozilla/dom/Document.h"
+#include "nsIContent.h"
+#include "nsGkAtoms.h"
+#include "mozilla/dom/NodeInfo.h"
+#include "nsContentCreatorFunctions.h"
+#include "nsError.h"
+#include "nsIDocShell.h"
+#include "nsIScriptError.h"
+#include "nsTHashtable.h"
+#include "nsHashKeys.h"
+#include "nsTArray.h"
+#include "nsCycleCollectionParticipant.h"
+#include "mozilla/css/Loader.h"
+#include "mozilla/dom/DocumentFragment.h"
+#include "mozilla/dom/ProcessingInstruction.h"
+#include "mozilla/dom/ScriptLoader.h"
+
+using namespace mozilla::dom;
+
+class nsXMLFragmentContentSink : public nsXMLContentSink,
+                                 public nsIFragmentContentSink {
+ public:
+  nsXMLFragmentContentSink();
+
+  // nsISupports
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsXMLFragmentContentSink,
+                                           nsXMLContentSink)
+
+  // nsIExpatSink
+  NS_IMETHOD HandleDoctypeDecl(const nsAString& aSubset, const nsAString& aName,
+                               const nsAString& aSystemId,
+                               const nsAString& aPublicId,
+                               nsISupports* aCatalogData) override;
+  NS_IMETHOD HandleProcessingInstruction(const char16_t* aTarget,
+                                         const char16_t* aData) override;
+  NS_IMETHOD HandleXMLDeclaration(const char16_t* aVersion,
+                                  const char16_t* aEncoding,
+                                  int32_t aStandalone) override;
+  NS_IMETHOD ReportError(const char16_t* aErrorText,
+                         const char16_t* aSourceText, nsIScriptError* aError,
+                         bool* aRetval) override;
+
+  // nsIContentSink
+  NS_IMETHOD WillBuildModel(nsDTDMode aDTDMode) override;
+  NS_IMETHOD DidBuildModel(bool aTerminated) override;
+  virtual void SetDocumentCharset(NotNull<const Encoding*> aEncoding) override;
+  virtual nsISupports* GetTarget() override;
+  NS_IMETHOD DidProcessATokenImpl();
+
+  // nsIXMLContentSink
+
+  // nsIFragmentContentSink
+  NS_IMETHOD FinishFragmentParsing(DocumentFragment** aFragment) override;
+  NS_IMETHOD SetTargetDocument(Document* aDocument) override;
+  NS_IMETHOD WillBuildContent() override;
+  NS_IMETHOD DidBuildContent() override;
+  NS_IMETHOD IgnoreFirstContainer() override;
+  NS_IMETHOD SetPreventScriptExecution(bool aPreventScriptExecution) override;
+
+ protected:
+  virtual ~nsXMLFragmentContentSink();
+
+  virtual bool SetDocElement(int32_t aNameSpaceID, nsAtom* aTagName,
+                             nsIContent* aContent) override;
+  virtual nsresult CreateElement(const char16_t** aAtts, uint32_t aAttsCount,
+                                 mozilla::dom::NodeInfo* aNodeInfo,
+                                 uint32_t aLineNumber, uint32_t aColumnNumber,
+                                 nsIContent** aResult, bool* aAppendContent,
+                                 mozilla::dom::FromParser aFromParser) override;
+  virtual nsresult CloseElement(nsIContent* aContent) override;
+
+  virtual void MaybeStartLayout(bool aIgnorePendingSheets) override;
+
+  // nsContentSink overrides
+  virtual nsresult ProcessStyleLinkFromHeader(
+      const nsAString& aHref, bool aAlternate, const nsAString& aTitle,
+      const nsAString& aIntegrity, const nsAString& aType,
+      const nsAString& aMedia, const nsAString& aReferrerPolicy) override;
+
+  // nsXMLContentSink overrides
+  virtual nsresult MaybeProcessXSLTLink(
+      ProcessingInstruction* aProcessingInstruction, const nsAString& aHref,
+      bool aAlternate, const nsAString& aTitle, const nsAString& aType,
+      const nsAString& aMedia, const nsAString& aReferrerPolicy,
+      bool* aWasXSLT = nullptr) override;
+
+  nsCOMPtr<Document> mTargetDocument;
+  // the fragment
+  RefPtr<DocumentFragment> mRoot;
+  bool mParseError;
+};
+
+static nsresult NewXMLFragmentContentSinkHelper(
+    nsIFragmentContentSink** aResult) {
+  nsXMLFragmentContentSink* it = new nsXMLFragmentContentSink();
+
+  NS_ADDREF(*aResult = it);
+
+  return NS_OK;
+}
+
+nsresult NS_NewXMLFragmentContentSink(nsIFragmentContentSink** aResult) {
+  return NewXMLFragmentContentSinkHelper(aResult);
+}
+
+nsXMLFragmentContentSink::nsXMLFragmentContentSink() : mParseError(false) {
+  mRunsToCompletion = true;
+}
+
+nsXMLFragmentContentSink::~nsXMLFragmentContentSink() = default;
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXMLFragmentContentSink)
+  NS_INTERFACE_MAP_ENTRY(nsIFragmentContentSink)
+NS_INTERFACE_MAP_END_INHERITING(nsXMLContentSink)
+
+NS_IMPL_ADDREF_INHERITED(nsXMLFragmentContentSink, nsXMLContentSink)
+NS_IMPL_RELEASE_INHERITED(nsXMLFragmentContentSink, nsXMLContentSink)
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(nsXMLFragmentContentSink, nsXMLContentSink,
+                                   mTargetDocument, mRoot)
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::WillBuildModel(nsDTDMode aDTDMode) {
+  if (mRoot) {
+    return NS_OK;
+  }
+
+  mState = eXMLContentSinkState_InDocumentElement;
+
+  NS_ASSERTION(mTargetDocument, "Need a document!");
+
+  mRoot = new (mNodeInfoManager) DocumentFragment(mNodeInfoManager);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::DidBuildModel(bool aTerminated) {
+  // Drop our reference to the parser to get rid of a circular
+  // reference.
+  mParser = nullptr;
+
+  return NS_OK;
+}
+
+void nsXMLFragmentContentSink::SetDocumentCharset(
+    NotNull<const Encoding*> aEncoding) {
+  MOZ_ASSERT_UNREACHABLE("fragments shouldn't set charset");
+}
+
+nsISupports* nsXMLFragmentContentSink::GetTarget() {
+  return ToSupports(mTargetDocument);
+}
+
+////////////////////////////////////////////////////////////////////////
+
+bool nsXMLFragmentContentSink::SetDocElement(int32_t aNameSpaceID,
+                                             nsAtom* aTagName,
+                                             nsIContent* aContent) {
+  // this is a fragment, not a document
+  return false;
+}
+
+nsresult nsXMLFragmentContentSink::CreateElement(
+    const char16_t** aAtts, uint32_t aAttsCount,
+    mozilla::dom::NodeInfo* aNodeInfo, uint32_t aLineNumber,
+    uint32_t aColumnNumber, nsIContent** aResult, bool* aAppendContent,
+    FromParser /*aFromParser*/) {
+  // Claim to not be coming from parser, since we don't do any of the
+  // fancy CloseElement stuff.
+  nsresult rv = nsXMLContentSink::CreateElement(
+      aAtts, aAttsCount, aNodeInfo, aLineNumber, aColumnNumber, aResult,
+      aAppendContent, NOT_FROM_PARSER);
+
+  // When we aren't grabbing all of the content we, never open a doc
+  // element, we run into trouble on the first element, so we don't append,
+  // and simply push this onto the content stack.
+  if (mContentStack.Length() == 0) {
+    *aAppendContent = false;
+  }
+
+  return rv;
+}
+
+nsresult nsXMLFragmentContentSink::CloseElement(nsIContent* aContent) {
+  // don't do fancy stuff in nsXMLContentSink
+  if (mPreventScriptExecution && (aContent->IsHTMLElement(nsGkAtoms::script) ||
+                                  aContent->IsSVGElement(nsGkAtoms::script))) {
+    nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(aContent);
+    if (sele) {
+      sele->PreventExecution();
+    } else {
+      NS_ASSERTION(nsNameSpaceManager::GetInstance()->mSVGDisabled,
+                   "Script did QI correctly, but wasn't a disabled SVG!");
+    }
+  }
+  return NS_OK;
+}
+
+void nsXMLFragmentContentSink::MaybeStartLayout(bool aIgnorePendingSheets) {}
+
+////////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::HandleDoctypeDecl(const nsAString& aSubset,
+                                            const nsAString& aName,
+                                            const nsAString& aSystemId,
+                                            const nsAString& aPublicId,
+                                            nsISupports* aCatalogData) {
+  MOZ_ASSERT_UNREACHABLE("fragments shouldn't have doctype declarations");
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::HandleProcessingInstruction(const char16_t* aTarget,
+                                                      const char16_t* aData) {
+  FlushText();
+
+  const nsDependentString target(aTarget);
+  const nsDependentString data(aData);
+
+  RefPtr<ProcessingInstruction> node =
+      NS_NewXMLProcessingInstruction(mNodeInfoManager, target, data);
+
+  // no special processing here.  that should happen when the fragment moves
+  // into the document
+  return AddContentAsLeaf(node);
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::HandleXMLDeclaration(const char16_t* aVersion,
+                                               const char16_t* aEncoding,
+                                               int32_t aStandalone) {
+  MOZ_ASSERT_UNREACHABLE("fragments shouldn't have XML declarations");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::ReportError(const char16_t* aErrorText,
+                                      const char16_t* aSourceText,
+                                      nsIScriptError* aError, bool* _retval) {
+  MOZ_ASSERT(aError && aSourceText && aErrorText, "Check arguments!!!");
+
+  // The expat driver should report the error.
+  *_retval = true;
+
+  mParseError = true;
+
+#ifdef DEBUG
+  // Report the error to stderr.
+  fprintf(stderr, "\n%s\n%s\n\n", NS_LossyConvertUTF16toASCII(aErrorText).get(),
+          NS_LossyConvertUTF16toASCII(aSourceText).get());
+#endif
+
+  // The following code is similar to the cleanup in
+  // nsXMLContentSink::ReportError()
+  mState = eXMLContentSinkState_InProlog;
+
+  // Clear the current content
+  while (mRoot->GetLastChild()) {
+    mRoot->GetLastChild()->Remove();
+  }
+
+  // Clear any buffered-up text we have.  It's enough to set the length to 0.
+  // The buffer itself is allocated when we're created and deleted in our
+  // destructor, so don't mess with it.
+  mTextLength = 0;
+
+  return NS_OK;
+}
+
+nsresult nsXMLFragmentContentSink::ProcessStyleLinkFromHeader(
+    const nsAString& aHref, bool aAlternate, const nsAString& aTitle,
+    const nsAString& aIntegrity, const nsAString& aType,
+    const nsAString& aMedia, const nsAString& aReferrerPolicy)
+
+{
+  MOZ_ASSERT_UNREACHABLE("Shouldn't have headers for a fragment sink");
+  return NS_OK;
+}
+
+nsresult nsXMLFragmentContentSink::MaybeProcessXSLTLink(
+    ProcessingInstruction* aProcessingInstruction, const nsAString& aHref,
+    bool aAlternate, const nsAString& aTitle, const nsAString& aType,
+    const nsAString& aMedia, const nsAString& aReferrerPolicy, bool* aWasXSLT) {
+  MOZ_ASSERT(!aWasXSLT, "Our one caller doesn't care about whether we're XSLT");
+  return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::FinishFragmentParsing(DocumentFragment** aFragment) {
+  mTargetDocument = nullptr;
+  mNodeInfoManager = nullptr;
+  mScriptLoader = nullptr;
+  mCSSLoader = nullptr;
+  mContentStack.Clear();
+  mDocumentURI = nullptr;
+  mDocShell = nullptr;
+  mDocElement = nullptr;
+  mCurrentHead = nullptr;
+  if (mParseError) {
+    // XXX PARSE_ERR from DOM3 Load and Save would be more appropriate
+    mRoot = nullptr;
+    mParseError = false;
+    *aFragment = nullptr;
+    return NS_ERROR_DOM_SYNTAX_ERR;
+  }
+
+  mRoot.forget(aFragment);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::SetTargetDocument(Document* aTargetDocument) {
+  NS_ENSURE_ARG_POINTER(aTargetDocument);
+
+  mTargetDocument = aTargetDocument;
+  mNodeInfoManager = aTargetDocument->NodeInfoManager();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::WillBuildContent() {
+  PushContent(mRoot);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::DidBuildContent() {
+  // Note: we need to FlushText() here because if we don't, we might not get
+  // an end element to do it for us, so make sure.
+  if (!mParseError) {
+    FlushText();
+  }
+  PopContent();
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::DidProcessATokenImpl() { return NS_OK; }
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::IgnoreFirstContainer() {
+  MOZ_ASSERT_UNREACHABLE("XML isn't as broken as HTML");
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsXMLFragmentContentSink::SetPreventScriptExecution(bool aPrevent) {
+  mPreventScriptExecution = aPrevent;
+  return NS_OK;
+}