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-rw-r--r--dom/xul/nsXULContentSink.cpp869
1 files changed, 869 insertions, 0 deletions
diff --git a/dom/xul/nsXULContentSink.cpp b/dom/xul/nsXULContentSink.cpp
new file mode 100644
index 0000000000..a4c15c63cd
--- /dev/null
+++ b/dom/xul/nsXULContentSink.cpp
@@ -0,0 +1,869 @@
+/* -*- 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/. */
+
+/*
+ * An implementation for a Gecko-style content sink that knows how
+ * to build a content model (the "prototype" document) from XUL.
+ *
+ * For more information on XUL,
+ * see http://developer.mozilla.org/en/docs/XUL
+ */
+
+#include "nsXULContentSink.h"
+
+#include "jsfriendapi.h"
+
+#include "nsCOMPtr.h"
+#include "nsHTMLStyleSheet.h"
+#include "nsIContentSink.h"
+#include "mozilla/dom/Document.h"
+#include "nsIFormControl.h"
+#include "mozilla/dom/NodeInfo.h"
+#include "nsIScriptContext.h"
+#include "nsIScriptGlobalObject.h"
+#include "nsNameSpaceManager.h"
+#include "nsParserBase.h"
+#include "nsViewManager.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsLayoutCID.h"
+#include "nsNetUtil.h"
+#include "nsString.h"
+#include "nsReadableUtils.h"
+#include "nsXULElement.h"
+#include "mozilla/Logging.h"
+#include "nsCRT.h"
+
+#include "nsXULPrototypeDocument.h" // XXXbe temporary
+#include "mozilla/css/Loader.h"
+
+#include "nsUnicharUtils.h"
+#include "nsGkAtoms.h"
+#include "nsContentUtils.h"
+#include "nsAttrName.h"
+#include "nsXMLContentSink.h"
+#include "nsIScriptError.h"
+#include "nsContentTypeParser.h"
+
+static mozilla::LazyLogModule gContentSinkLog("nsXULContentSink");
+
+using namespace mozilla;
+using namespace mozilla::dom;
+//----------------------------------------------------------------------
+
+XULContentSinkImpl::ContextStack::ContextStack() : mTop(nullptr), mDepth(0) {}
+
+XULContentSinkImpl::ContextStack::~ContextStack() {
+ while (mTop) {
+ Entry* doomed = mTop;
+ mTop = mTop->mNext;
+ delete doomed;
+ }
+}
+
+void XULContentSinkImpl::ContextStack::Push(RefPtr<nsXULPrototypeNode>&& aNode,
+ State aState) {
+ mTop = new Entry(std::move(aNode), aState, mTop);
+ ++mDepth;
+}
+
+nsresult XULContentSinkImpl::ContextStack::Pop(State* aState) {
+ if (mDepth == 0) return NS_ERROR_UNEXPECTED;
+
+ Entry* entry = mTop;
+ mTop = mTop->mNext;
+ --mDepth;
+
+ *aState = entry->mState;
+ delete entry;
+
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::ContextStack::GetTopNode(
+ RefPtr<nsXULPrototypeNode>& aNode) {
+ if (mDepth == 0) return NS_ERROR_UNEXPECTED;
+
+ aNode = mTop->mNode;
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::ContextStack::GetTopChildren(
+ nsPrototypeArray** aChildren) {
+ if (mDepth == 0) return NS_ERROR_UNEXPECTED;
+
+ *aChildren = &(mTop->mChildren);
+ return NS_OK;
+}
+
+void XULContentSinkImpl::ContextStack::Clear() {
+ Entry* cur = mTop;
+ while (cur) {
+ // Release the root element (and its descendants).
+ Entry* next = cur->mNext;
+ delete cur;
+ cur = next;
+ }
+
+ mTop = nullptr;
+ mDepth = 0;
+}
+
+void XULContentSinkImpl::ContextStack::Traverse(
+ nsCycleCollectionTraversalCallback& aCb) {
+ nsCycleCollectionTraversalCallback& cb = aCb;
+ for (ContextStack::Entry* tmp = mTop; tmp; tmp = tmp->mNext) {
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNode)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mChildren)
+ }
+}
+
+//----------------------------------------------------------------------
+
+XULContentSinkImpl::XULContentSinkImpl()
+ : mText(nullptr),
+ mTextLength(0),
+ mTextSize(0),
+ mConstrainSize(true),
+ mState(eInProlog) {}
+
+XULContentSinkImpl::~XULContentSinkImpl() {
+ // The context stack _should_ be empty, unless something has gone wrong.
+ NS_ASSERTION(mContextStack.Depth() == 0, "Context stack not empty?");
+ mContextStack.Clear();
+
+ free(mText);
+}
+
+//----------------------------------------------------------------------
+// nsISupports interface
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(XULContentSinkImpl)
+
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(XULContentSinkImpl)
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mNodeInfoManager)
+ tmp->mContextStack.Clear();
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mPrototype)
+ NS_IMPL_CYCLE_COLLECTION_UNLINK(mParser)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(XULContentSinkImpl)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNodeInfoManager)
+ tmp->mContextStack.Traverse(cb);
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPrototype)
+ NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mParser)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(XULContentSinkImpl)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIXMLContentSink)
+ NS_INTERFACE_MAP_ENTRY(nsIXMLContentSink)
+ NS_INTERFACE_MAP_ENTRY(nsIExpatSink)
+ NS_INTERFACE_MAP_ENTRY(nsIContentSink)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(XULContentSinkImpl)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(XULContentSinkImpl)
+
+//----------------------------------------------------------------------
+// nsIContentSink interface
+
+NS_IMETHODIMP
+XULContentSinkImpl::DidBuildModel(bool aTerminated) {
+ nsCOMPtr<Document> doc = do_QueryReferent(mDocument);
+ if (doc) {
+ mPrototype->NotifyLoadDone();
+ mDocument = nullptr;
+ }
+
+ // Drop our reference to the parser to get rid of a circular
+ // reference.
+ mParser = nullptr;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::WillInterrupt(void) {
+ // XXX Notify the docshell, if necessary
+ return NS_OK;
+}
+
+void XULContentSinkImpl::WillResume() {
+ // XXX Notify the docshell, if necessary
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::SetParser(nsParserBase* aParser) {
+ mParser = aParser;
+ return NS_OK;
+}
+
+void XULContentSinkImpl::SetDocumentCharset(
+ NotNull<const Encoding*> aEncoding) {
+ nsCOMPtr<Document> doc = do_QueryReferent(mDocument);
+ if (doc) {
+ doc->SetDocumentCharacterSet(aEncoding);
+ }
+}
+
+nsISupports* XULContentSinkImpl::GetTarget() {
+ nsCOMPtr<Document> doc = do_QueryReferent(mDocument);
+ return ToSupports(doc);
+}
+
+//----------------------------------------------------------------------
+
+nsresult XULContentSinkImpl::Init(Document* aDocument,
+ nsXULPrototypeDocument* aPrototype) {
+ MOZ_ASSERT(aDocument != nullptr, "null ptr");
+ if (!aDocument) return NS_ERROR_NULL_POINTER;
+
+ mDocument = do_GetWeakReference(aDocument);
+ mPrototype = aPrototype;
+
+ mDocumentURL = mPrototype->GetURI();
+ mNodeInfoManager = aPrototype->GetNodeInfoManager();
+ if (!mNodeInfoManager) return NS_ERROR_UNEXPECTED;
+
+ mState = eInProlog;
+ return NS_OK;
+}
+
+//----------------------------------------------------------------------
+//
+// Text buffering
+//
+
+bool XULContentSinkImpl::IsDataInBuffer(char16_t* buffer, int32_t length) {
+ for (int32_t i = 0; i < length; ++i) {
+ if (buffer[i] == ' ' || buffer[i] == '\t' || buffer[i] == '\n' ||
+ buffer[i] == '\r')
+ continue;
+
+ return true;
+ }
+ return false;
+}
+
+nsresult XULContentSinkImpl::FlushText(bool aCreateTextNode) {
+ nsresult rv;
+
+ do {
+ // Don't do anything if there's no text to create a node from, or
+ // if they've told us not to create a text node
+ if (!mTextLength) break;
+
+ if (!aCreateTextNode) break;
+
+ RefPtr<nsXULPrototypeNode> node;
+ rv = mContextStack.GetTopNode(node);
+ if (NS_FAILED(rv)) return rv;
+
+ bool stripWhitespace = false;
+ if (node->mType == nsXULPrototypeNode::eType_Element) {
+ mozilla::dom::NodeInfo* nodeInfo =
+ static_cast<nsXULPrototypeElement*>(node.get())->mNodeInfo;
+
+ if (nodeInfo->NamespaceEquals(kNameSpaceID_XUL))
+ stripWhitespace = !nodeInfo->Equals(nsGkAtoms::label) &&
+ !nodeInfo->Equals(nsGkAtoms::description);
+ }
+
+ // Don't bother if there's nothing but whitespace.
+ if (stripWhitespace && !IsDataInBuffer(mText, mTextLength)) break;
+
+ // Don't bother if we're not in XUL document body
+ if (mState != eInDocumentElement || mContextStack.Depth() == 0) break;
+
+ RefPtr<nsXULPrototypeText> text = new nsXULPrototypeText();
+ text->mValue.Assign(mText, mTextLength);
+ if (stripWhitespace) text->mValue.Trim(" \t\n\r");
+
+ // hook it up
+ nsPrototypeArray* children = nullptr;
+ rv = mContextStack.GetTopChildren(&children);
+ if (NS_FAILED(rv)) return rv;
+
+ children->AppendElement(text.forget());
+ } while (0);
+
+ // Reset our text buffer
+ mTextLength = 0;
+ return NS_OK;
+}
+
+//----------------------------------------------------------------------
+
+nsresult XULContentSinkImpl::NormalizeAttributeString(
+ const char16_t* aExpatName, nsAttrName& aName) {
+ int32_t nameSpaceID;
+ RefPtr<nsAtom> prefix, localName;
+ nsContentUtils::SplitExpatName(aExpatName, getter_AddRefs(prefix),
+ getter_AddRefs(localName), &nameSpaceID);
+
+ if (nameSpaceID == kNameSpaceID_None) {
+ aName.SetTo(localName);
+
+ return NS_OK;
+ }
+
+ RefPtr<mozilla::dom::NodeInfo> ni;
+ ni = mNodeInfoManager->GetNodeInfo(localName, prefix, nameSpaceID,
+ nsINode::ATTRIBUTE_NODE);
+ aName.SetTo(ni);
+
+ return NS_OK;
+}
+
+/**** BEGIN NEW APIs ****/
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleStartElement(const char16_t* aName,
+ const char16_t** aAtts,
+ uint32_t aAttsCount,
+ uint32_t aLineNumber,
+ uint32_t aColumnNumber) {
+ // XXX Hopefully the parser will flag this before we get here. If
+ // we're in the epilog, there should be no new elements
+ MOZ_ASSERT(mState != eInEpilog, "tag in XUL doc epilog");
+ MOZ_ASSERT(aAttsCount % 2 == 0, "incorrect aAttsCount");
+
+ // Adjust aAttsCount so it's the actual number of attributes
+ aAttsCount /= 2;
+
+ if (mState == eInEpilog) return NS_ERROR_UNEXPECTED;
+
+ if (mState != eInScript) {
+ FlushText();
+ }
+
+ int32_t nameSpaceID;
+ RefPtr<nsAtom> prefix, localName;
+ nsContentUtils::SplitExpatName(aName, getter_AddRefs(prefix),
+ getter_AddRefs(localName), &nameSpaceID);
+
+ RefPtr<mozilla::dom::NodeInfo> nodeInfo;
+ nodeInfo = mNodeInfoManager->GetNodeInfo(localName, prefix, nameSpaceID,
+ nsINode::ELEMENT_NODE);
+
+ nsresult rv = NS_OK;
+ switch (mState) {
+ case eInProlog:
+ // We're the root document element
+ rv = OpenRoot(aAtts, aAttsCount, nodeInfo);
+ break;
+
+ case eInDocumentElement:
+ rv = OpenTag(aAtts, aAttsCount, aLineNumber, nodeInfo);
+ break;
+
+ case eInEpilog:
+ case eInScript:
+ MOZ_LOG(
+ gContentSinkLog, LogLevel::Warning,
+ ("xul: warning: unexpected tags in epilog at line %d", aLineNumber));
+ rv = NS_ERROR_UNEXPECTED; // XXX
+ break;
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleEndElement(const char16_t* aName) {
+ // Never EVER return anything but NS_OK or
+ // NS_ERROR_HTMLPARSER_BLOCK from this method. Doing so will blow
+ // the parser's little mind all over the planet.
+ nsresult rv;
+
+ RefPtr<nsXULPrototypeNode> node;
+ rv = mContextStack.GetTopNode(node);
+
+ if (NS_FAILED(rv)) {
+ return NS_OK;
+ }
+
+ switch (node->mType) {
+ case nsXULPrototypeNode::eType_Element: {
+ // Flush any text _now_, so that we'll get text nodes created
+ // before popping the stack.
+ FlushText();
+
+ // Pop the context stack and do prototype hookup.
+ nsPrototypeArray* children = nullptr;
+ rv = mContextStack.GetTopChildren(&children);
+ if (NS_FAILED(rv)) return rv;
+
+ nsXULPrototypeElement* element =
+ static_cast<nsXULPrototypeElement*>(node.get());
+
+ int32_t count = children->Length();
+ if (count) {
+ element->mChildren.SetCapacity(count);
+
+ for (int32_t i = 0; i < count; ++i)
+ element->mChildren.AppendElement(children->ElementAt(i));
+ }
+ } break;
+
+ case nsXULPrototypeNode::eType_Script: {
+ nsXULPrototypeScript* script =
+ static_cast<nsXULPrototypeScript*>(node.get());
+
+ // If given a src= attribute, we must ignore script tag content.
+ if (!script->mSrcURI && !script->HasStencil()) {
+ nsCOMPtr<Document> doc = do_QueryReferent(mDocument);
+
+ script->mOutOfLine = false;
+ if (doc) {
+ script->Compile(mText, mTextLength, JS::SourceOwnership::Borrowed,
+ mDocumentURL, script->mLineNo, doc);
+ }
+ }
+
+ FlushText(false);
+ } break;
+
+ default:
+ NS_ERROR("didn't expect that");
+ break;
+ }
+
+ rv = mContextStack.Pop(&mState);
+ NS_ASSERTION(NS_SUCCEEDED(rv), "context stack corrupted");
+ if (NS_FAILED(rv)) return rv;
+
+ if (mContextStack.Depth() == 0) {
+ // The root element should -always- be an element, because
+ // it'll have been created via XULContentSinkImpl::OpenRoot().
+ NS_ASSERTION(node->mType == nsXULPrototypeNode::eType_Element,
+ "root is not an element");
+ if (node->mType != nsXULPrototypeNode::eType_Element)
+ return NS_ERROR_UNEXPECTED;
+
+ // Now that we're done parsing, set the prototype document's
+ // root element. This transfers ownership of the prototype
+ // element tree to the prototype document.
+ nsXULPrototypeElement* element =
+ static_cast<nsXULPrototypeElement*>(node.get());
+
+ mPrototype->SetRootElement(element);
+ mState = eInEpilog;
+ }
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleComment(const char16_t* aName) {
+ FlushText();
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleCDataSection(const char16_t* aData,
+ uint32_t aLength) {
+ FlushText();
+ return AddText(aData, aLength);
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleDoctypeDecl(const nsAString& aSubset,
+ const nsAString& aName,
+ const nsAString& aSystemId,
+ const nsAString& aPublicId,
+ nsISupports* aCatalogData) {
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleCharacterData(const char16_t* aData,
+ uint32_t aLength) {
+ if (aData && mState != eInProlog && mState != eInEpilog) {
+ return AddText(aData, aLength);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleProcessingInstruction(const char16_t* aTarget,
+ const char16_t* aData) {
+ FlushText();
+
+ const nsDependentString target(aTarget);
+ const nsDependentString data(aData);
+
+ // Note: the created nsXULPrototypePI has mRefCnt == 1
+ RefPtr<nsXULPrototypePI> pi = new nsXULPrototypePI();
+ pi->mTarget = target;
+ pi->mData = data;
+
+ if (mState == eInProlog) {
+ // Note: passing in already addrefed pi
+ return mPrototype->AddProcessingInstruction(pi);
+ }
+
+ nsresult rv;
+ nsPrototypeArray* children = nullptr;
+ rv = mContextStack.GetTopChildren(&children);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // XXX(Bug 1631371) Check if this should use a fallible operation as it
+ // pretended earlier.
+ children->AppendElement(pi);
+
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::HandleXMLDeclaration(const char16_t* aVersion,
+ const char16_t* aEncoding,
+ int32_t aStandalone) {
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+XULContentSinkImpl::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;
+
+ nsresult rv = NS_OK;
+
+ // make sure to empty the context stack so that
+ // <parsererror> could become the root element.
+ mContextStack.Clear();
+
+ mState = eInProlog;
+
+ // 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 leaving the document empty if we're asked to not add a <parsererror>
+ // root node
+ nsCOMPtr<Document> idoc = do_QueryReferent(mDocument);
+ if (idoc && idoc->SuppressParserErrorElement()) {
+ return NS_OK;
+ };
+
+ const char16_t* noAtts[] = {0, 0};
+
+ constexpr auto errorNs =
+ u"http://www.mozilla.org/newlayout/xml/parsererror.xml"_ns;
+
+ nsAutoString parsererror(errorNs);
+ parsererror.Append((char16_t)0xFFFF);
+ parsererror.AppendLiteral("parsererror");
+
+ rv = HandleStartElement(parsererror.get(), noAtts, 0, 0, 0);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = HandleCharacterData(aErrorText, NS_strlen(aErrorText));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsAutoString sourcetext(errorNs);
+ sourcetext.Append((char16_t)0xFFFF);
+ sourcetext.AppendLiteral("sourcetext");
+
+ rv = HandleStartElement(sourcetext.get(), noAtts, 0, 0, 0);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = HandleCharacterData(aSourceText, NS_strlen(aSourceText));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = HandleEndElement(sourcetext.get());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = HandleEndElement(parsererror.get());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return rv;
+}
+
+nsresult XULContentSinkImpl::OpenRoot(const char16_t** aAttributes,
+ const uint32_t aAttrLen,
+ mozilla::dom::NodeInfo* aNodeInfo) {
+ NS_ASSERTION(mState == eInProlog, "how'd we get here?");
+ if (mState != eInProlog) return NS_ERROR_UNEXPECTED;
+
+ if (aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XHTML) ||
+ aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XUL)) {
+ MOZ_LOG(gContentSinkLog, LogLevel::Error,
+ ("xul: script tag not allowed as root content element"));
+
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ // Create the element
+ RefPtr<nsXULPrototypeElement> element = new nsXULPrototypeElement(aNodeInfo);
+
+ // Add the attributes
+ nsresult rv = AddAttributes(aAttributes, aAttrLen, element);
+ if (NS_FAILED(rv)) return rv;
+
+ // Push the element onto the context stack, so that child
+ // containers will hook up to us as their parent.
+ mContextStack.Push(std::move(element), mState);
+
+ mState = eInDocumentElement;
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::OpenTag(const char16_t** aAttributes,
+ const uint32_t aAttrLen,
+ const uint32_t aLineNumber,
+ mozilla::dom::NodeInfo* aNodeInfo) {
+ // Create the element
+ RefPtr<nsXULPrototypeElement> element = new nsXULPrototypeElement(aNodeInfo);
+
+ // Link this element to its parent.
+ nsPrototypeArray* children = nullptr;
+ nsresult rv = mContextStack.GetTopChildren(&children);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // Add the attributes
+ rv = AddAttributes(aAttributes, aAttrLen, element);
+ if (NS_FAILED(rv)) return rv;
+
+ children->AppendElement(element);
+
+ if (aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XHTML) ||
+ aNodeInfo->Equals(nsGkAtoms::script, kNameSpaceID_XUL)) {
+ // Do scripty things now
+ rv = OpenScript(aAttributes, aLineNumber);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ NS_ASSERTION(mState == eInScript || mState == eInDocumentElement,
+ "Unexpected state");
+ if (mState == eInScript) {
+ // OpenScript has pushed the nsPrototypeScriptElement onto the
+ // stack, so we're done.
+ return NS_OK;
+ }
+ }
+
+ // Push the element onto the context stack, so that child
+ // containers will hook up to us as their parent.
+ mContextStack.Push(std::move(element), mState);
+
+ mState = eInDocumentElement;
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::OpenScript(const char16_t** aAttributes,
+ const uint32_t aLineNumber) {
+ bool isJavaScript = true;
+ nsresult rv;
+
+ // Look for SRC attribute and look for a LANGUAGE attribute
+ nsAutoString src;
+ while (*aAttributes) {
+ const nsDependentString key(aAttributes[0]);
+ if (key.EqualsLiteral("src")) {
+ src.Assign(aAttributes[1]);
+ } else if (key.EqualsLiteral("type")) {
+ nsDependentString str(aAttributes[1]);
+ nsContentTypeParser parser(str);
+ nsAutoString mimeType;
+ rv = parser.GetType(mimeType);
+ if (NS_FAILED(rv)) {
+ if (rv == NS_ERROR_INVALID_ARG) {
+ // Fail immediately rather than checking if later things
+ // are okay.
+ return NS_OK;
+ }
+ // We do want the warning here
+ NS_ENSURE_SUCCESS(rv, rv);
+ }
+
+ // NOTE(emilio): Module scripts don't pass this test, aren't cached yet.
+ // If they become cached, then we need to tweak
+ // PrototypeDocumentContentSink and remove the special cases there.
+ if (nsContentUtils::IsJavascriptMIMEType(mimeType)) {
+ isJavaScript = true;
+
+ // Get the version string, and ensure that JavaScript supports it.
+ nsAutoString versionName;
+ rv = parser.GetParameter("version", versionName);
+
+ if (NS_SUCCEEDED(rv)) {
+ nsContentUtils::ReportToConsoleNonLocalized(
+ u"Versioned JavaScripts are no longer supported. "
+ "Please remove the version parameter."_ns,
+ nsIScriptError::errorFlag, "XUL Document"_ns, nullptr,
+ mDocumentURL, u""_ns, aLineNumber);
+ isJavaScript = false;
+ } else if (rv != NS_ERROR_INVALID_ARG) {
+ return rv;
+ }
+ } else {
+ isJavaScript = false;
+ }
+ } else if (key.EqualsLiteral("language")) {
+ // Language is deprecated, and the impl in ScriptLoader ignores the
+ // various version strings anyway. So we make no attempt to support
+ // languages other than JS for language=
+ nsAutoString lang(aAttributes[1]);
+ if (nsContentUtils::IsJavaScriptLanguage(lang)) {
+ isJavaScript = true;
+ }
+ }
+ aAttributes += 2;
+ }
+
+ // Don't process scripts that aren't JavaScript.
+ if (!isJavaScript) {
+ return NS_OK;
+ }
+
+ nsCOMPtr<Document> doc(do_QueryReferent(mDocument));
+ nsCOMPtr<nsIScriptGlobalObject> globalObject;
+ if (doc) globalObject = do_QueryInterface(doc->GetWindow());
+ RefPtr<nsXULPrototypeScript> script = new nsXULPrototypeScript(aLineNumber);
+
+ // If there is a SRC attribute...
+ if (!src.IsEmpty()) {
+ // Use the SRC attribute value to load the URL
+ rv = NS_NewURI(getter_AddRefs(script->mSrcURI), src, nullptr, mDocumentURL);
+
+ // Check if this document is allowed to load a script from this source
+ // NOTE: if we ever allow scripts added via the DOM to run, we need to
+ // add a CheckLoadURI call for that as well.
+ if (NS_SUCCEEDED(rv)) {
+ if (!mSecMan)
+ mSecMan = do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
+ if (NS_SUCCEEDED(rv)) {
+ nsCOMPtr<Document> doc = do_QueryReferent(mDocument, &rv);
+
+ if (NS_SUCCEEDED(rv)) {
+ rv = mSecMan->CheckLoadURIWithPrincipal(
+ doc->NodePrincipal(), script->mSrcURI,
+ nsIScriptSecurityManager::ALLOW_CHROME, doc->InnerWindowID());
+ }
+ }
+ }
+
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ // Attempt to deserialize an out-of-line script from the FastLoad
+ // file right away. Otherwise we'll end up reloading the script and
+ // corrupting the FastLoad file trying to serialize it, in the case
+ // where it's already there.
+ script->DeserializeOutOfLine(nullptr, mPrototype);
+ }
+
+ nsPrototypeArray* children = nullptr;
+ rv = mContextStack.GetTopChildren(&children);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ children->AppendElement(script);
+
+ mConstrainSize = false;
+
+ mContextStack.Push(script, mState);
+ mState = eInScript;
+
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::AddAttributes(const char16_t** aAttributes,
+ const uint32_t aAttrLen,
+ nsXULPrototypeElement* aElement) {
+ // Add tag attributes to the element
+ nsresult rv;
+
+ // Create storage for the attributes
+ nsXULPrototypeAttribute* attrs = nullptr;
+ if (aAttrLen > 0) {
+ attrs = aElement->mAttributes.AppendElements(aAttrLen);
+ }
+
+ // Copy the attributes into the prototype
+ uint32_t i;
+ for (i = 0; i < aAttrLen; ++i) {
+ rv = NormalizeAttributeString(aAttributes[i * 2], attrs[i].mName);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ rv = aElement->SetAttrAt(i, nsDependentString(aAttributes[i * 2 + 1]),
+ mDocumentURL);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ if (MOZ_LOG_TEST(gContentSinkLog, LogLevel::Debug)) {
+ nsAutoString extraWhiteSpace;
+ int32_t cnt = mContextStack.Depth();
+ while (--cnt >= 0) extraWhiteSpace.AppendLiteral(" ");
+ nsAutoString qnameC, valueC;
+ qnameC.Assign(aAttributes[0]);
+ valueC.Assign(aAttributes[1]);
+ MOZ_LOG(gContentSinkLog, LogLevel::Debug,
+ ("xul: %.5d. %s %s=%s",
+ -1, // XXX pass in line number
+ NS_ConvertUTF16toUTF8(extraWhiteSpace).get(),
+ NS_ConvertUTF16toUTF8(qnameC).get(),
+ NS_ConvertUTF16toUTF8(valueC).get()));
+ }
+ }
+
+ return NS_OK;
+}
+
+nsresult XULContentSinkImpl::AddText(const char16_t* aText, int32_t aLength) {
+ // Create buffer when we first need it
+ if (0 == mTextSize) {
+ mText = (char16_t*)malloc(sizeof(char16_t) * 4096);
+ if (nullptr == mText) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ mTextSize = 4096;
+ }
+
+ // Copy data from string into our buffer; flush buffer when it fills up
+ int32_t offset = 0;
+ while (0 != aLength) {
+ int32_t amount = mTextSize - mTextLength;
+ if (amount > aLength) {
+ amount = aLength;
+ }
+ if (0 == amount) {
+ if (mConstrainSize) {
+ nsresult rv = FlushText();
+ if (NS_OK != rv) {
+ return rv;
+ }
+ } else {
+ CheckedInt32 size = mTextSize;
+ size += aLength;
+ if (!size.isValid()) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ mTextSize = size.value();
+
+ mText = (char16_t*)realloc(mText, sizeof(char16_t) * mTextSize);
+ if (nullptr == mText) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+ }
+ }
+ memcpy(&mText[mTextLength], aText + offset, sizeof(char16_t) * amount);
+
+ mTextLength += amount;
+ offset += amount;
+ aLength -= amount;
+ }
+
+ return NS_OK;
+}