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/*
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
* Copyright (C) 2011-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HTMLTreeBuilder.h"
#include "CommonAtomStrings.h"
#include "DocumentFragment.h"
#include "HTMLDocument.h"
#include "HTMLDocumentParser.h"
#include "HTMLFormControlElement.h"
#include "HTMLFormElement.h"
#include "HTMLInputElement.h"
#include "HTMLOptGroupElement.h"
#include "HTMLOptionElement.h"
#include "HTMLParserIdioms.h"
#include "HTMLScriptElement.h"
#include "HTMLTableElement.h"
#include "JSCustomElementInterface.h"
#include "LocalizedStrings.h"
#include "NotImplemented.h"
#include "SVGElementTypeHelpers.h"
#include "SVGScriptElement.h"
#include "XLinkNames.h"
#include "XMLNSNames.h"
#include "XMLNames.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/RobinHoodHashMap.h>
#include <wtf/unicode/CharacterNames.h>
#if ENABLE(TELEPHONE_NUMBER_DETECTION) && PLATFORM(IOS_FAMILY)
#include "TelephoneNumberDetector.h"
#endif
namespace WebCore {
using namespace HTMLNames;
CustomElementConstructionData::CustomElementConstructionData(Ref<JSCustomElementInterface>&& customElementInterface, const AtomString& name, Vector<Attribute>&& attributes)
: elementInterface(WTFMove(customElementInterface))
, name(name)
, attributes(WTFMove(attributes))
{
}
CustomElementConstructionData::~CustomElementConstructionData() = default;
namespace {
inline bool isHTMLSpaceOrReplacementCharacter(UChar character)
{
return isHTMLSpace(character) || character == replacementCharacter;
}
}
static inline TextPosition uninitializedPositionValue1()
{
return TextPosition(OrdinalNumber::fromOneBasedInt(-1), OrdinalNumber());
}
static inline bool isAllWhitespace(const String& string)
{
return string.isAllSpecialCharacters<isHTMLSpace>();
}
static inline bool isAllWhitespaceOrReplacementCharacters(const String& string)
{
return string.isAllSpecialCharacters<isHTMLSpaceOrReplacementCharacter>();
}
static bool isNumberedHeaderTag(const AtomString& tagName)
{
return tagName == h1Tag
|| tagName == h2Tag
|| tagName == h3Tag
|| tagName == h4Tag
|| tagName == h5Tag
|| tagName == h6Tag;
}
static bool isCaptionColOrColgroupTag(const AtomString& tagName)
{
return tagName == captionTag || tagName == colTag || tagName == colgroupTag;
}
static bool isTableCellContextTag(const AtomString& tagName)
{
return tagName == thTag || tagName == tdTag;
}
static bool isTableBodyContextTag(const AtomString& tagName)
{
return tagName == tbodyTag || tagName == tfootTag || tagName == theadTag;
}
static bool isNonAnchorNonNobrFormattingTag(const AtomString& tagName)
{
return tagName == bTag
|| tagName == bigTag
|| tagName == codeTag
|| tagName == emTag
|| tagName == fontTag
|| tagName == iTag
|| tagName == sTag
|| tagName == smallTag
|| tagName == strikeTag
|| tagName == strongTag
|| tagName == ttTag
|| tagName == uTag;
}
static bool isNonAnchorFormattingTag(const AtomString& tagName)
{
return tagName == nobrTag || isNonAnchorNonNobrFormattingTag(tagName);
}
// https://html.spec.whatwg.org/multipage/syntax.html#formatting
bool HTMLConstructionSite::isFormattingTag(const AtomString& tagName)
{
return tagName == aTag || isNonAnchorFormattingTag(tagName);
}
class HTMLTreeBuilder::ExternalCharacterTokenBuffer {
public:
explicit ExternalCharacterTokenBuffer(AtomHTMLToken& token)
: m_text(token.characters())
, m_isAll8BitData(token.charactersIsAll8BitData())
{
ASSERT(!isEmpty());
}
explicit ExternalCharacterTokenBuffer(const String& string)
: m_text(string)
, m_isAll8BitData(m_text.is8Bit())
{
ASSERT(!isEmpty());
}
~ExternalCharacterTokenBuffer()
{
ASSERT(isEmpty());
}
bool isEmpty() const { return m_text.isEmpty(); }
bool isAll8BitData() const { return m_isAll8BitData; }
void skipAtMostOneLeadingNewline()
{
ASSERT(!isEmpty());
if (m_text[0] == '\n')
m_text = m_text.substring(1);
}
void skipLeadingWhitespace()
{
skipLeading<isHTMLSpace>();
}
String takeLeadingWhitespace()
{
return takeLeading<isHTMLSpace>();
}
void skipLeadingNonWhitespace()
{
skipLeading<isNotHTMLSpace>();
}
String takeRemaining()
{
auto result = makeString(m_text);
m_text = StringView();
return result;
}
void giveRemainingTo(StringBuilder& recipient)
{
recipient.append(m_text);
m_text = StringView();
}
String takeRemainingWhitespace()
{
ASSERT(!isEmpty());
Vector<LChar, 8> whitespace;
do {
UChar character = m_text[0];
if (isHTMLSpace(character))
whitespace.append(character);
m_text = m_text.substring(1);
} while (!m_text.isEmpty());
// Returning the null string when there aren't any whitespace
// characters is slightly cleaner semantically because we don't want
// to insert a text node (as opposed to inserting an empty text node).
if (whitespace.isEmpty())
return String();
return String::adopt(WTFMove(whitespace));
}
private:
template<bool characterPredicate(UChar)> void skipLeading()
{
ASSERT(!isEmpty());
while (characterPredicate(m_text[0])) {
m_text = m_text.substring(1);
if (m_text.isEmpty())
return;
}
}
template<bool characterPredicate(UChar)> String takeLeading()
{
ASSERT(!isEmpty());
StringView start = m_text;
skipLeading<characterPredicate>();
if (start.length() == m_text.length())
return String();
return makeString(start.left(start.length() - m_text.length()));
}
String makeString(StringView stringView) const
{
if (stringView.is8Bit() || !isAll8BitData())
return stringView.toString();
return String::make8BitFrom16BitSource(stringView.characters16(), stringView.length());
}
StringView m_text;
bool m_isAll8BitData;
};
inline bool HTMLTreeBuilder::isParsingTemplateContents() const
{
return m_tree.openElements().hasTemplateInHTMLScope();
}
inline bool HTMLTreeBuilder::isParsingFragmentOrTemplateContents() const
{
return isParsingFragment() || isParsingTemplateContents();
}
HTMLTreeBuilder::HTMLTreeBuilder(HTMLDocumentParser& parser, HTMLDocument& document, ParserContentPolicy parserContentPolicy, const HTMLParserOptions& options)
: m_parser(parser)
, m_options(options)
, m_tree(document, parserContentPolicy, options.maximumDOMTreeDepth)
, m_scriptToProcessStartPosition(uninitializedPositionValue1())
{
#if ASSERT_ENABLED
m_destructionProhibited = false;
#endif
}
HTMLTreeBuilder::HTMLTreeBuilder(HTMLDocumentParser& parser, DocumentFragment& fragment, Element& contextElement, ParserContentPolicy parserContentPolicy, const HTMLParserOptions& options)
: m_parser(parser)
, m_options(options)
, m_fragmentContext(fragment, contextElement)
, m_tree(fragment, parserContentPolicy, options.maximumDOMTreeDepth)
, m_scriptToProcessStartPosition(uninitializedPositionValue1())
{
ASSERT(isMainThread());
// https://html.spec.whatwg.org/multipage/syntax.html#parsing-html-fragments
// For efficiency, we skip step 5 ("Let root be a new html element with no attributes") and instead use the DocumentFragment as a root node.
m_tree.openElements().pushRootNode(HTMLStackItem(fragment));
if (contextElement.hasTagName(templateTag))
m_templateInsertionModes.append(InsertionMode::TemplateContents);
resetInsertionModeAppropriately();
m_tree.setForm(is<HTMLFormElement>(contextElement) ? &downcast<HTMLFormElement>(contextElement) : HTMLFormElement::findClosestFormAncestor(contextElement));
#if ASSERT_ENABLED
m_destructionProhibited = false;
#endif
}
HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext()
{
}
HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext(DocumentFragment& fragment, Element& contextElement)
: m_fragment(&fragment)
, m_contextElementStackItem(contextElement)
{
ASSERT(!fragment.hasChildNodes());
}
inline Element& HTMLTreeBuilder::FragmentParsingContext::contextElement()
{
return contextElementStackItem().element();
}
inline HTMLStackItem& HTMLTreeBuilder::FragmentParsingContext::contextElementStackItem()
{
ASSERT(m_fragment);
return m_contextElementStackItem;
}
RefPtr<ScriptElement> HTMLTreeBuilder::takeScriptToProcess(TextPosition& scriptStartPosition)
{
ASSERT(!m_destroyed);
if (!m_scriptToProcess)
return nullptr;
// Unpause ourselves, callers may pause us again when processing the script.
// The HTML5 spec is written as though scripts are executed inside the tree builder.
// We pause the parser to exit the tree builder, and then resume before running scripts.
scriptStartPosition = m_scriptToProcessStartPosition;
m_scriptToProcessStartPosition = uninitializedPositionValue1();
return WTFMove(m_scriptToProcess);
}
void HTMLTreeBuilder::constructTree(AtomHTMLToken&& token)
{
#if ASSERT_ENABLED
ASSERT(!m_destroyed);
ASSERT(!m_destructionProhibited);
m_destructionProhibited = true;
#endif
if (shouldProcessTokenInForeignContent(token))
processTokenInForeignContent(WTFMove(token));
else
processToken(WTFMove(token));
bool inForeignContent = !m_tree.isEmpty()
&& !isInHTMLNamespace(adjustedCurrentStackItem())
&& !HTMLElementStack::isHTMLIntegrationPoint(m_tree.currentStackItem())
&& !HTMLElementStack::isMathMLTextIntegrationPoint(m_tree.currentStackItem());
m_parser.tokenizer().setForceNullCharacterReplacement(m_insertionMode == InsertionMode::Text || inForeignContent);
m_parser.tokenizer().setShouldAllowCDATA(inForeignContent);
#if ASSERT_ENABLED
m_destructionProhibited = false;
#endif
m_tree.executeQueuedTasks();
// The tree builder might have been destroyed as an indirect result of executing the queued tasks.
}
void HTMLTreeBuilder::processToken(AtomHTMLToken&& token)
{
switch (token.type()) {
case HTMLToken::Type::Uninitialized:
ASSERT_NOT_REACHED();
break;
case HTMLToken::Type::DOCTYPE:
m_shouldSkipLeadingNewline = false;
processDoctypeToken(WTFMove(token));
break;
case HTMLToken::Type::StartTag:
m_shouldSkipLeadingNewline = false;
processStartTag(WTFMove(token));
break;
case HTMLToken::Type::EndTag:
m_shouldSkipLeadingNewline = false;
processEndTag(WTFMove(token));
break;
case HTMLToken::Type::Comment:
m_shouldSkipLeadingNewline = false;
processComment(WTFMove(token));
return;
case HTMLToken::Type::Character:
processCharacter(WTFMove(token));
break;
case HTMLToken::Type::EndOfFile:
m_shouldSkipLeadingNewline = false;
processEndOfFile(WTFMove(token));
break;
}
}
void HTMLTreeBuilder::processDoctypeToken(AtomHTMLToken&& token)
{
ASSERT(token.type() == HTMLToken::Type::DOCTYPE);
if (m_insertionMode == InsertionMode::Initial) {
m_tree.insertDoctype(WTFMove(token));
m_insertionMode = InsertionMode::BeforeHTML;
return;
}
if (m_insertionMode == InsertionMode::InTableText) {
defaultForInTableText();
processDoctypeToken(WTFMove(token));
return;
}
parseError(token);
}
void HTMLTreeBuilder::processFakeStartTag(const QualifiedName& tagName, Vector<Attribute>&& attributes)
{
// FIXME: We'll need a fancier conversion than just "localName" for SVG/MathML tags.
AtomHTMLToken fakeToken(HTMLToken::Type::StartTag, tagName.localName(), WTFMove(attributes));
processStartTag(WTFMove(fakeToken));
}
void HTMLTreeBuilder::processFakeEndTag(const AtomString& tagName)
{
AtomHTMLToken fakeToken(HTMLToken::Type::EndTag, tagName);
processEndTag(WTFMove(fakeToken));
}
void HTMLTreeBuilder::processFakeEndTag(const QualifiedName& tagName)
{
// FIXME: We'll need a fancier conversion than just "localName" for SVG/MathML tags.
processFakeEndTag(tagName.localName());
}
void HTMLTreeBuilder::processFakeCharacters(const String& characters)
{
ASSERT(!characters.isEmpty());
ExternalCharacterTokenBuffer buffer(characters);
processCharacterBuffer(buffer);
}
void HTMLTreeBuilder::processFakePEndTagIfPInButtonScope()
{
if (!m_tree.openElements().inButtonScope(pTag->localName()))
return;
AtomHTMLToken endP(HTMLToken::Type::EndTag, pTag->localName());
processEndTag(WTFMove(endP));
}
namespace {
bool isLi(const HTMLStackItem& item)
{
return item.hasTagName(liTag);
}
bool isDdOrDt(const HTMLStackItem& item)
{
return item.hasTagName(ddTag) || item.hasTagName(dtTag);
}
}
template <bool shouldClose(const HTMLStackItem&)> void HTMLTreeBuilder::processCloseWhenNestedTag(AtomHTMLToken&& token)
{
m_framesetOk = false;
for (auto* nodeRecord = &m_tree.openElements().topRecord(); ; nodeRecord = nodeRecord->next()) {
HTMLStackItem& item = nodeRecord->stackItem();
if (shouldClose(item)) {
ASSERT(item.isElement());
processFakeEndTag(item.localName());
break;
}
if (isSpecialNode(item) && !item.hasTagName(addressTag) && !item.hasTagName(divTag) && !item.hasTagName(pTag))
break;
}
processFakePEndTagIfPInButtonScope();
m_tree.insertHTMLElement(WTFMove(token));
}
template <typename TableQualifiedName> static MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName> createCaseMap(const TableQualifiedName* const names[], unsigned length)
{
MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName> map;
for (unsigned i = 0; i < length; ++i) {
const QualifiedName& name = *names[i];
const AtomString& localName = name.localName();
AtomString loweredLocalName = localName.convertToASCIILowercase();
if (loweredLocalName != localName)
map.add(loweredLocalName, name);
}
return map;
}
static void adjustSVGTagNameCase(AtomHTMLToken& token)
{
static NeverDestroyed<MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName>> map = createCaseMap(SVGNames::getSVGTags(), SVGNames::SVGTagsCount);
const QualifiedName& casedName = map.get().get(token.name());
if (casedName.localName().isNull())
return;
token.setName(casedName.localName());
}
static inline void adjustAttributes(const MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName>& map, AtomHTMLToken& token)
{
for (auto& attribute : token.attributes()) {
const QualifiedName& casedName = map.get(attribute.localName());
if (!casedName.localName().isNull())
attribute.parserSetName(casedName);
}
}
template<const QualifiedName* const* attributesTable(), unsigned attributesTableLength> static void adjustAttributes(AtomHTMLToken& token)
{
static NeverDestroyed<MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName>> map = createCaseMap(attributesTable(), attributesTableLength);
adjustAttributes(map, token);
}
static inline void adjustSVGAttributes(AtomHTMLToken& token)
{
adjustAttributes<SVGNames::getSVGAttrs, SVGNames::SVGAttrsCount>(token);
}
static inline void adjustMathMLAttributes(AtomHTMLToken& token)
{
adjustAttributes<MathMLNames::getMathMLAttrs, MathMLNames::MathMLAttrsCount>(token);
}
static MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName> createForeignAttributesMap()
{
auto addNamesWithPrefix = [](MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName>& map, const AtomString& prefix, const QualifiedName* const names[], unsigned length) {
for (unsigned i = 0; i < length; ++i) {
const QualifiedName& name = *names[i];
const AtomString& localName = name.localName();
map.add(makeAtomString(prefix, ':', localName), QualifiedName(prefix, localName, name.namespaceURI()));
}
};
MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName> map;
AtomString xlinkName("xlink"_s);
addNamesWithPrefix(map, xlinkName, XLinkNames::getXLinkAttrs(), XLinkNames::XLinkAttrsCount);
addNamesWithPrefix(map, xmlAtom(), XMLNames::getXMLAttrs(), XMLNames::XMLAttrsCount);
map.add(xmlnsAtom(), XMLNSNames::xmlnsAttr);
map.add("xmlns:xlink"_s, QualifiedName(xmlnsAtom(), xlinkName, XMLNSNames::xmlnsNamespaceURI));
return map;
}
static void adjustForeignAttributes(AtomHTMLToken& token)
{
static NeverDestroyed<MemoryCompactLookupOnlyRobinHoodHashMap<AtomString, QualifiedName>> map = createForeignAttributesMap();
adjustAttributes(map, token);
}
void HTMLTreeBuilder::processStartTagForInBody(AtomHTMLToken&& token)
{
ASSERT(token.type() == HTMLToken::Type::StartTag);
if (token.name() == htmlTag) {
processHtmlStartTagForInBody(WTFMove(token));
return;
}
if (token.name() == baseTag
|| token.name() == basefontTag
|| token.name() == bgsoundTag
|| token.name() == commandTag
|| token.name() == linkTag
|| token.name() == metaTag
|| token.name() == noframesTag
|| token.name() == scriptTag
|| token.name() == styleTag
|| token.name() == titleTag) {
bool didProcess = processStartTagForInHead(WTFMove(token));
ASSERT_UNUSED(didProcess, didProcess);
return;
}
if (token.name() == bodyTag) {
parseError(token);
bool fragmentOrTemplateCase = !m_tree.openElements().secondElementIsHTMLBodyElement() || m_tree.openElements().hasOnlyOneElement()
|| m_tree.openElements().hasTemplateInHTMLScope();
if (fragmentOrTemplateCase) {
ASSERT(isParsingFragmentOrTemplateContents());
return;
}
m_framesetOk = false;
m_tree.insertHTMLBodyStartTagInBody(WTFMove(token));
return;
}
if (token.name() == framesetTag) {
parseError(token);
if (!m_tree.openElements().secondElementIsHTMLBodyElement() || m_tree.openElements().hasOnlyOneElement()) {
ASSERT(isParsingFragmentOrTemplateContents());
return;
}
if (!m_framesetOk)
return;
m_tree.openElements().bodyElement().remove();
m_tree.openElements().popUntil(m_tree.openElements().bodyElement());
m_tree.openElements().popHTMLBodyElement();
// Note: in the fragment case the root is a DocumentFragment instead of a proper html element which is a quirk / optimization in WebKit.
ASSERT(!isParsingFragment() || is<DocumentFragment>(m_tree.openElements().topNode()));
ASSERT(isParsingFragment() || &m_tree.openElements().top() == &m_tree.openElements().htmlElement());
m_tree.insertHTMLElement(WTFMove(token));
m_insertionMode = InsertionMode::InFrameset;
return;
}
if (token.name() == addressTag
|| token.name() == articleTag
|| token.name() == asideTag
|| token.name() == blockquoteTag
|| token.name() == centerTag
|| token.name() == detailsTag
|| token.name() == dialogTag
|| token.name() == dirTag
|| token.name() == divTag
|| token.name() == dlTag
|| token.name() == fieldsetTag
|| token.name() == figcaptionTag
|| token.name() == figureTag
|| token.name() == footerTag
|| token.name() == headerTag
|| token.name() == hgroupTag
|| token.name() == mainTag
|| token.name() == menuTag
|| token.name() == navTag
|| token.name() == olTag
|| token.name() == pTag
|| token.name() == sectionTag
|| token.name() == summaryTag
|| token.name() == ulTag) {
processFakePEndTagIfPInButtonScope();
m_tree.insertHTMLElement(WTFMove(token));
return;
}
if (isNumberedHeaderTag(token.name())) {
processFakePEndTagIfPInButtonScope();
if (isNumberedHeaderElement(m_tree.currentStackItem())) {
parseError(token);
m_tree.openElements().pop();
}
m_tree.insertHTMLElement(WTFMove(token));
return;
}
if (token.name() == preTag || token.name() == listingTag) {
processFakePEndTagIfPInButtonScope();
m_tree.insertHTMLElement(WTFMove(token));
m_shouldSkipLeadingNewline = true;
m_framesetOk = false;
return;
}
if (token.name() == formTag) {
if (m_tree.form() && !isParsingTemplateContents()) {
parseError(token);
return;
}
processFakePEndTagIfPInButtonScope();
m_tree.insertHTMLFormElement(WTFMove(token));
return;
}
if (token.name() == liTag) {
processCloseWhenNestedTag<isLi>(WTFMove(token));
return;
}
if (token.name() == ddTag || token.name() == dtTag) {
processCloseWhenNestedTag<isDdOrDt>(WTFMove(token));
return;
}
if (token.name() == plaintextTag) {
processFakePEndTagIfPInButtonScope();
m_tree.insertHTMLElement(WTFMove(token));
m_parser.tokenizer().setPLAINTEXTState();
return;
}
if (token.name() == buttonTag) {
if (m_tree.openElements().inScope(buttonTag)) {
parseError(token);
processFakeEndTag(buttonTag);
processStartTag(WTFMove(token)); // FIXME: Could we just fall through here?
return;
}
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertHTMLElement(WTFMove(token));
m_framesetOk = false;
return;
}
if (token.name() == aTag) {
RefPtr<Element> activeATag = m_tree.activeFormattingElements().closestElementInScopeWithName(aTag->localName());
if (activeATag) {
parseError(token);
processFakeEndTag(aTag);
m_tree.activeFormattingElements().remove(*activeATag);
if (m_tree.openElements().contains(*activeATag))
m_tree.openElements().remove(*activeATag);
}
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertFormattingElement(WTFMove(token));
return;
}
if (isNonAnchorNonNobrFormattingTag(token.name())) {
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertFormattingElement(WTFMove(token));
return;
}
if (token.name() == nobrTag) {
m_tree.reconstructTheActiveFormattingElements();
if (m_tree.openElements().inScope(nobrTag)) {
parseError(token);
processFakeEndTag(nobrTag);
m_tree.reconstructTheActiveFormattingElements();
}
m_tree.insertFormattingElement(WTFMove(token));
return;
}
if (token.name() == appletTag || token.name() == embedTag || token.name() == objectTag) {
if (!pluginContentIsAllowed(m_tree.parserContentPolicy()))
return;
}
if (token.name() == appletTag || token.name() == marqueeTag || token.name() == objectTag) {
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertHTMLElement(WTFMove(token));
m_tree.activeFormattingElements().appendMarker();
m_framesetOk = false;
return;
}
if (token.name() == tableTag) {
if (!m_tree.inQuirksMode() && m_tree.openElements().inButtonScope(pTag))
processFakeEndTag(pTag);
m_tree.insertHTMLElement(WTFMove(token));
m_framesetOk = false;
m_insertionMode = InsertionMode::InTable;
return;
}
if (token.name() == imageTag) {
parseError(token);
// Apparently we're not supposed to ask.
token.setName(imgTag->localName());
// Note the fall through to the imgTag handling below!
}
if (token.name() == areaTag
|| token.name() == brTag
|| token.name() == embedTag
|| token.name() == imgTag
|| token.name() == keygenTag
|| token.name() == wbrTag) {
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertSelfClosingHTMLElement(WTFMove(token));
m_framesetOk = false;
return;
}
if (token.name() == inputTag) {
m_tree.reconstructTheActiveFormattingElements();
auto* typeAttribute = findAttribute(token.attributes(), typeAttr);
bool shouldClearFramesetOK = !typeAttribute || !equalLettersIgnoringASCIICase(typeAttribute->value(), "hidden"_s);
m_tree.insertSelfClosingHTMLElement(WTFMove(token));
if (shouldClearFramesetOK)
m_framesetOk = false;
return;
}
if (token.name() == paramTag || token.name() == sourceTag || token.name() == trackTag) {
m_tree.insertSelfClosingHTMLElement(WTFMove(token));
return;
}
if (token.name() == hrTag) {
processFakePEndTagIfPInButtonScope();
m_tree.insertSelfClosingHTMLElement(WTFMove(token));
m_framesetOk = false;
return;
}
if (token.name() == textareaTag) {
m_tree.insertHTMLElement(WTFMove(token));
m_shouldSkipLeadingNewline = true;
m_parser.tokenizer().setRCDATAState();
m_originalInsertionMode = m_insertionMode;
m_framesetOk = false;
m_insertionMode = InsertionMode::Text;
return;
}
if (token.name() == xmpTag) {
processFakePEndTagIfPInButtonScope();
m_tree.reconstructTheActiveFormattingElements();
m_framesetOk = false;
processGenericRawTextStartTag(WTFMove(token));
return;
}
if (token.name() == iframeTag) {
m_framesetOk = false;
processGenericRawTextStartTag(WTFMove(token));
return;
}
if (token.name() == noembedTag) {
processGenericRawTextStartTag(WTFMove(token));
return;
}
if (token.name() == noscriptTag && m_options.scriptingFlag) {
processGenericRawTextStartTag(WTFMove(token));
return;
}
if (token.name() == selectTag) {
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertHTMLElement(WTFMove(token));
m_framesetOk = false;
if (m_insertionMode == InsertionMode::InTable
|| m_insertionMode == InsertionMode::InCaption
|| m_insertionMode == InsertionMode::InColumnGroup
|| m_insertionMode == InsertionMode::InTableBody
|| m_insertionMode == InsertionMode::InRow
|| m_insertionMode == InsertionMode::InCell)
m_insertionMode = InsertionMode::InSelectInTable;
else
m_insertionMode = InsertionMode::InSelect;
return;
}
if (token.name() == optgroupTag || token.name() == optionTag) {
if (is<HTMLOptionElement>(m_tree.currentStackItem().node())) {
AtomHTMLToken endOption(HTMLToken::Type::EndTag, optionTag->localName());
processEndTag(WTFMove(endOption));
}
m_tree.reconstructTheActiveFormattingElements();
m_tree.insertHTMLElement(WTFMove(token));
return;
}
if (token.name() == rbTag || token.name() == rtcTag) {
if (m_tree.openElements().inScope(rubyTag->localName())) {
m_tree.generateImpliedEndTags();
if (!m_tree.currentStackItem().hasTagName(rubyTag))
parseError(token);
}
m_tree.insertHTMLElement(WTFMove(token));
return;
}
if (token.name() == rtTag || token.name() == rpTag) {
if (m_tree.openElements().inScope(rubyTag->localName())) {
m_tree.generateImpliedEndTagsWithExclusion(rtcTag->localName());
if (!m_tree.currentStackItem().hasTagName(rubyTag) && !m_tree.currentStackItem().hasTagName(rtcTag))
parseError(token);
}
m_tree.insertHTMLElement(WTFMove(token));
return;
}
if (token.name() == MathMLNames::mathTag->localName()) {
m_tree.reconstructTheActiveFormattingElements();
adjustMathMLAttributes(token);
adjustForeignAttributes(token);
m_tree.insertForeignElement(WTFMove(token), MathMLNames::mathmlNamespaceURI);
return;
}
if (token.name() == SVGNames::svgTag->localName()) {
m_tree.reconstructTheActiveFormattingElements();
adjustSVGAttributes(token);
adjustForeignAttributes(token);
m_tree.insertForeignElement(WTFMove(token), SVGNames::svgNamespaceURI);
return;
}
if (isCaptionColOrColgroupTag(token.name())
|| token.name() == frameTag
|| token.name() == headTag
|| isTableBodyContextTag(token.name())
|| isTableCellContextTag(token.name())
|| token.name() == trTag) {
parseError(token);
return;
}
if (token.name() == templateTag) {
m_framesetOk = false;
processTemplateStartTag(WTFMove(token));
return;
}
m_tree.reconstructTheActiveFormattingElements();
insertGenericHTMLElement(WTFMove(token));
}
inline void HTMLTreeBuilder::insertGenericHTMLElement(AtomHTMLToken&& token)
{
m_customElementToConstruct = m_tree.insertHTMLElementOrFindCustomElementInterface(WTFMove(token));
}
void HTMLTreeBuilder::didCreateCustomOrFallbackElement(Ref<Element>&& element, CustomElementConstructionData& data)
{
m_tree.insertCustomElement(WTFMove(element), data.name, WTFMove(data.attributes));
}
void HTMLTreeBuilder::processTemplateStartTag(AtomHTMLToken&& token)
{
m_tree.activeFormattingElements().appendMarker();
m_tree.insertHTMLElement(WTFMove(token));
m_templateInsertionModes.append(InsertionMode::TemplateContents);
m_insertionMode = InsertionMode::TemplateContents;
}
bool HTMLTreeBuilder::processTemplateEndTag(AtomHTMLToken&& token)
{
ASSERT(token.name() == templateTag->localName());
if (!m_tree.openElements().hasTemplateInHTMLScope()) {
ASSERT(m_templateInsertionModes.isEmpty() || (m_templateInsertionModes.size() == 1 && m_fragmentContext.contextElement().hasTagName(templateTag)));
parseError(token);
return false;
}
m_tree.generateImpliedEndTags();
if (!m_tree.currentStackItem().hasTagName(templateTag))
parseError(token);
m_tree.openElements().popUntilPopped(templateTag);
m_tree.activeFormattingElements().clearToLastMarker();
m_templateInsertionModes.removeLast();
resetInsertionModeAppropriately();
return true;
}
bool HTMLTreeBuilder::processEndOfFileForInTemplateContents(AtomHTMLToken&& token)
{
AtomHTMLToken endTemplate(HTMLToken::Type::EndTag, templateTag->localName());
if (!processTemplateEndTag(WTFMove(endTemplate)))
return false;
processEndOfFile(WTFMove(token));
return true;
}
bool HTMLTreeBuilder::processColgroupEndTagForInColumnGroup()
{
bool ignoreFakeEndTag = m_tree.currentIsRootNode() || m_tree.currentNode().hasTagName(templateTag);
if (ignoreFakeEndTag) {
ASSERT(isParsingFragmentOrTemplateContents());
// FIXME: parse error
return false;
}
m_tree.openElements().pop();
m_insertionMode = InsertionMode::InTable;
return true;
}
// http://www.whatwg.org/specs/web-apps/current-work/multipage/tokenization.html#close-the-cell
void HTMLTreeBuilder::closeTheCell()
{
ASSERT(m_insertionMode == InsertionMode::InCell);
if (m_tree.openElements().inTableScope(tdTag)) {
ASSERT(!m_tree.openElements().inTableScope(thTag));
processFakeEndTag(tdTag);
return;
}
ASSERT(m_tree.openElements().inTableScope(thTag));
processFakeEndTag(thTag);
ASSERT(m_insertionMode == InsertionMode::InRow);
}
void HTMLTreeBuilder::processStartTagForInTable(AtomHTMLToken&& token)
{
ASSERT(token.type() == HTMLToken::Type::StartTag);
if (token.name() == captionTag) {
m_tree.openElements().popUntilTableScopeMarker();
m_tree.activeFormattingElements().appendMarker();
m_tree.insertHTMLElement(WTFMove(token));
m_insertionMode = InsertionMode::InCaption;
return;
}
if (token.name() == colgroupTag) {
m_tree.openElements().popUntilTableScopeMarker();
m_tree.insertHTMLElement(WTFMove(token));
m_insertionMode = InsertionMode::InColumnGroup;
return;
}
if (token.name() == colTag) {
processFakeStartTag(colgroupTag);
ASSERT(m_insertionMode == InsertionMode::InColumnGroup);
processStartTag(WTFMove(token));
return;
}
if (isTableBodyContextTag(token.name())) {
m_tree.openElements().popUntilTableScopeMarker();
m_tree.insertHTMLElement(WTFMove(token));
m_insertionMode = InsertionMode::InTableBody;
return;
}
if (isTableCellContextTag(token.name()) || token.name() == trTag) {
processFakeStartTag(tbodyTag);
ASSERT(m_insertionMode == InsertionMode::InTableBody);
processStartTag(WTFMove(token));
return;
}
if (token.name() == tableTag) {
parseError(token);
if (!processTableEndTagForInTable()) {
ASSERT(isParsingFragmentOrTemplateContents());
return;
}
processStartTag(WTFMove(token));
return;
}
if (token.name() == styleTag || token.name() == scriptTag) {
processStartTagForInHead(WTFMove(token));
return;
}
if (token.name() == inputTag) {
auto* typeAttribute = findAttribute(token.attributes(), typeAttr);
if (typeAttribute && equalLettersIgnoringASCIICase(typeAttribute->value(), "hidden"_s)) {
parseError(token);
m_tree.insertSelfClosingHTMLElement(WTFMove(token));