Modernize and streamline HTMLStackItem

Modernize and streamline HTMLStackItem
https://bugs.webkit.org/show_bug.cgi?id=140056

Reviewed by Anders Carlsson.

* html/HTMLHtmlElement.cpp:
(WebCore::HTMLHtmlElement::create): Changed to return Ref.
* html/HTMLHtmlElement.h: Ditto.

* html/parser/HTMLConstructionSite.cpp:
(WebCore::hasImpliedEndTag): Update to use reference instead of pointer.
(WebCore::causesFosterParenting): Moved here from HTMLStackItem.h.
(WebCore::HTMLConstructionSite::insertHTMLHtmlStartTagBeforeHTML): Update
for references instead of pointers.
(WebCore::HTMLConstructionSite::insertHTMLHtmlStartTagInBody): Ditto.
(WebCore::HTMLConstructionSite::insertHTMLBodyStartTagInBody): Ditto.
(WebCore::HTMLConstructionSite::insertComment): Ditto.
(WebCore::HTMLConstructionSite::insertCommentOnHTMLHtmlElement): Ditto.
(WebCore::HTMLConstructionSite::insertHTMLHeadElement): Ditto.
(WebCore::HTMLConstructionSite::insertHTMLBodyElement): Ditto.
(WebCore::HTMLConstructionSite::insertHTMLFormElement): Ditto.
(WebCore::HTMLConstructionSite::insertHTMLElement): Ditto.
(WebCore::HTMLConstructionSite::insertSelfClosingHTMLElement): Ditto.
(WebCore::HTMLConstructionSite::insertFormattingElement): Ditto.
(WebCore::HTMLConstructionSite::insertScriptElement): Ditto.
(WebCore::HTMLConstructionSite::insertForeignElement): Ditto.
(WebCore::HTMLConstructionSite::insertTextNode): Ditto.
(WebCore::HTMLConstructionSite::reparent): Ditto.
(WebCore::HTMLConstructionSite::insertAlreadyParsedChild): Ditto.
(WebCore::HTMLConstructionSite::takeAllChildren): Ditto.
(WebCore::HTMLConstructionSite::ownerDocumentForCurrentNode): Ditto.
(WebCore::HTMLConstructionSite::createElementFromSavedToken): Ditto.
(WebCore::HTMLConstructionSite::indexOfFirstUnopenFormattingElement): Ditto.
(WebCore::HTMLConstructionSite::reconstructTheActiveFormattingElements): Ditto.
(WebCore::HTMLConstructionSite::generateImpliedEndTagsWithExclusion): Ditto.
(WebCore::HTMLConstructionSite::findFosterSite): Ditto.
(WebCore::HTMLConstructionSite::shouldFosterParent): Removed unneeded
isElementNode check, since causesFosterParenting will return false for a
document fragment node.

* html/parser/HTMLConstructionSite.h: Updated to use references instead of
pointers. Also removed the unneeded currentElementRecord function.

* html/parser/HTMLElementStack.cpp:
(WebCore::HTMLNames::isRootNode): Updated to use references instead of pointers.
(WebCore::HTMLNames::isScopeMarker): Ditto.
(WebCore::HTMLNames::isListItemScopeMarker): Ditto.
(WebCore::HTMLNames::isTableScopeMarker): Ditto.
(WebCore::HTMLNames::isTableBodyScopeMarker): Ditto.
(WebCore::HTMLNames::isTableRowScopeMarker): Ditto.
(WebCore::HTMLNames::isForeignContentScopeMarker): Ditto.
(WebCore::HTMLNames::isButtonScopeMarker): Ditto.
(WebCore::HTMLNames::isSelectScopeMarker): Ditto.
(WebCore::HTMLElementStack::ElementRecord::replaceElement): Ditto.
(WebCore::HTMLElementStack::hasOnlyOneElement): Ditto.
(WebCore::HTMLElementStack::popHTMLHeadElement): Ditto.
(WebCore::HTMLElementStack::popHTMLBodyElement): Ditto.
(WebCore::HTMLElementStack::popAll): Ditto.
(WebCore::HTMLElementStack::pop): Ditto.
(WebCore::HTMLElementStack::popUntil): Ditto.
(WebCore::HTMLElementStack::popUntilNumberedHeaderElementPopped): Ditto.
(WebCore::HTMLElementStack::isMathMLTextIntegrationPoint): Ditto. Also removed
unneeded isElementNode check.
(WebCore::HTMLElementStack::isHTMLIntegrationPoint): Ditto.
(WebCore::HTMLElementStack::pushRootNode): Ditto.
(WebCore::HTMLElementStack::pushRootNodeCommon): Ditto.
(WebCore::HTMLElementStack::pushHTMLHeadElement): Ditto.
(WebCore::HTMLElementStack::pushHTMLBodyElement): Ditto.
(WebCore::HTMLElementStack::insertAbove): Ditto.
(WebCore::HTMLElementStack::topRecord): Ditto.
(WebCore::HTMLElementStack::oneBelowTop): Ditto.
(WebCore::HTMLElementStack::removeHTMLHeadElement): Ditto.
(WebCore::HTMLElementStack::remove): Ditto.
(WebCore::HTMLElementStack::find): Ditto.
(WebCore::HTMLElementStack::topmost): Ditto.
(WebCore::inScopeCommon): Ditto.
(WebCore::HTMLElementStack::hasNumberedHeaderElementInScope): Ditto.
(WebCore::HTMLElementStack::inScope): Ditto.
(WebCore::HTMLElementStack::htmlElement): Ditto.
(WebCore::HTMLElementStack::headElement): Ditto.
(WebCore::HTMLElementStack::bodyElement): Ditto.
(WebCore::HTMLElementStack::rootNode): Ditto.
(WebCore::HTMLElementStack::popCommon): Ditto.
(WebCore::HTMLElementStack::removeNonTopCommon): Ditto.
(WebCore::HTMLElementStack::furthestBlockForFormattingElement): Ditto.
(WebCore::HTMLElementStack::show): Ditto.

* html/parser/HTMLElementStack.h: Use reference instead of pointer.

* html/parser/HTMLFormattingElementList.cpp:
(WebCore::HTMLFormattingElementList::closestElementInScopeWithName): Update
to use references instead of pointer.
(WebCore::HTMLFormattingElementList::swapTo): Ditto.
(WebCore::HTMLFormattingElementList::tryToEnsureNoahsArkConditionQuickly): Ditto.
(WebCore::HTMLFormattingElementList::ensureNoahsArkCondition): Ditto.
(WebCore::HTMLFormattingElementList::show): Ditto.

* html/parser/HTMLFormattingElementList.h: Use reference instead of pointer
and a raw pointer instead of a RefPtr.

* html/parser/HTMLStackItem.h: Removed unneeded includes. Got rid of "type"
concept and simply overload the create functions and constructors for both
Element and DOcumentFragment. Renamed isElementNode and isDocumentFragmentNode
to remove the "Node" suffix. Removed unused getAttributeItem, hasLocalName, and
one of the overloads of matchesHTMLTag. Moved all the policy functions such as
causesFosterParenting out of this class into free functions or into other
source files. Got rid of m_isDocumentFragmentNode boolean. Moved function
bodies out of the class definition. Marked all data members const since they
are all initialized in the constructor and never touched again. Restructured
the isSpecialNode function to avoid the repeated checks of the namespace.

* html/parser/HTMLTreeBuilder.cpp:
(WebCore::HTMLTreeBuilder::isParsingTemplateContents): Use reference instead of
pointer and free functions instead of member functions.
(WebCore::HTMLTreeBuilder::HTMLTreeBuilder): Ditto.
(WebCore::HTMLTreeBuilder::FragmentParsingContext::FragmentParsingContext): Ditto.
(WebCore::HTMLTreeBuilder::FragmentParsingContext::contextElement): Ditto.
(WebCore::HTMLTreeBuilder::constructTree): Ditto.
(WebCore::HTMLTreeBuilder::processFakePEndTagIfPInButtonScope): Ditto.
(WebCore::HTMLTreeBuilder::processCloseWhenNestedTag): Ditto.
(WebCore::HTMLTreeBuilder::processStartTagForInBody): Ditto.
(WebCore::HTMLTreeBuilder::processTemplateStartTag): Ditto.
(WebCore::HTMLTreeBuilder::processTemplateEndTag): Ditto.
(WebCore::HTMLTreeBuilder::processColgroupEndTagForInColumnGroup): Ditto.
(WebCore::HTMLTreeBuilder::closeTheCell): Ditto.
(WebCore::HTMLTreeBuilder::processStartTagForInTable): Ditto.
(WebCore::HTMLTreeBuilder::processStartTag): Ditto.
(WebCore::HTMLTreeBuilder::processHtmlStartTagForInBody): Ditto.
(WebCore::HTMLTreeBuilder::processBodyEndTagForInBody): Ditto.
(WebCore::HTMLTreeBuilder::processAnyOtherEndTagForInBody): Ditto.
(WebCore::HTMLTreeBuilder::callTheAdoptionAgency): Ditto.
(WebCore::HTMLTreeBuilder::resetInsertionModeAppropriately): Ditto.
(WebCore::HTMLTreeBuilder::processEndTagForInTableBody): Ditto.
(WebCore::HTMLTreeBuilder::processEndTagForInRow): Ditto.
(WebCore::HTMLTreeBuilder::processEndTagForInCell): Ditto.
(WebCore::HTMLTreeBuilder::processEndTagForInBody): Ditto.
(WebCore::HTMLTreeBuilder::processCaptionEndTagForInCaption): Ditto.
(WebCore::HTMLTreeBuilder::processTrEndTagForInRow): Ditto.
(WebCore::HTMLTreeBuilder::processTableEndTagForInTable): Ditto.
(WebCore::HTMLTreeBuilder::processEndTag): Ditto.
(WebCore::HTMLTreeBuilder::processCharacterBuffer): Ditto.
(WebCore::HTMLTreeBuilder::processEndOfFile): Ditto.
(WebCore::HTMLTreeBuilder::adjustedCurrentStackItem): Ditto.
(WebCore::HTMLTreeBuilder::shouldProcessTokenInForeignContent): Ditto.
(WebCore::HTMLTreeBuilder::processTokenInForeignContent): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@177910 268f45cc-cd09-0410-ab3c-d52691b4dbfc