/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.xowa.mediawiki.includes.parsers; import gplx.*; import gplx.xowa.*; import gplx.xowa.mediawiki.*; import gplx.xowa.mediawiki.includes.*;
import gplx.xowa.mediawiki.includes.linkers.*;
/**
* PHP Parser - Processes wiki markup (which uses a more user-friendly
* syntax, such as "[[link]]" for making links), and provides a one-way
* transformation of that wiki markup it into (X)HTML output / markup
* (which in turn the browser understands, and can display).
*
* There are seven main entry points into the Parser class:
*
* - Parser::parse()
*     produces HTML output
* - Parser::preSaveTransform()
*     produces altered wiki markup
* - Parser::preprocess()
*     removes HTML comments and expands templates
* - Parser::cleanSig() and Parser::cleanSigInSig()
*     cleans a signature before saving it to preferences
* - Parser::getSection()
*     return the content of a section from an article for section editing
* - Parser::replaceSection()
*     replaces a section by number inside an article
* - Parser::getPreloadText()
*     removes <noinclude> sections and <includeonly> tags
*
* Globals used:
*    Object: $wgContLang
*
* @warning $wgUser or $wgTitle or $wgRequest or $wgLang. Keep them away!
*
* @par Settings:
* $wgNamespacesWithSubpages
*
* @par Settings only within ParserOptions:
* $wgAllowExternalImages
* $wgAllowSpecialInclusion
* $wgInterwikiMagic
* $wgMaxArticleSize
*
* @ingroup Parser
*/
public class XomwParser {
//		/**
//		* Update this version number when the ParserOutput format
//		* changes in an incompatible way, so the parser cache
//		* can automatically discard old data.
//		*/
//		static final VERSION = '1.6.4';
//
//		/**
//		* Update this version number when the output of serialiseHalfParsedText()
//		* changes in an incompatible way
//		*/
//		static final HALF_PARSED_VERSION = 2;
//
//		# Flags for Parser::setFunctionHook
//		static final SFH_NO_HASH = 1;
//		static final SFH_OBJECT_ARGS = 2;
//
//		# Constants needed for external link processing
//		# Everything except bracket, space, or control characters
//		# \p{Zs} is unicode 'separator, space' category. It covers the space 0x20
//		# as well as U+3000 is IDEOGRAPHIC SPACE for T21052
//		static final EXT_LINK_URL_CLASS = '[^][<>"\\x00-\\x20\\x7F\p{Zs}]';
//		# Simplified expression to match an IPv4 or IPv6 address, or
//		# at least one character of a host name (embeds EXT_LINK_URL_CLASS)
//		static final EXT_LINK_ADDR = '(?:[0-9.]+|\\[(?i:[0-9a-f:.]+)\\]|[^][<>"\\x00-\\x20\\x7F\p{Zs}])';
//		# RegExp to make image URLs (embeds IPv6 part of EXT_LINK_ADDR)
//		// @codingStandardsIgnoreStart Generic.Files.LineLength
//		static final EXT_IMAGE_REGEX = '/^(http:\/\/|https:\/\/)((?:\\[(?i:[0-9a-f:.]+)\\])?[^][<>"\\x00-\\x20\\x7F\p{Zs}]+)
//			\\/([A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF]+)\\.((?i)gif|png|jpg|jpeg)$/Sxu';
//		// @codingStandardsIgnoreEnd
//
//		# Regular expression for a non-newline space
//		static final SPACE_NOT_NL = '(?:\t|&nbsp;|&\#0*160;|&\#[Xx]0*[Aa]0;|\p{Zs})';
//
//		# Flags for preprocessToDom
//		static final PTD_FOR_INCLUSION = 1;
//
//		# Allowed values for this.mOutputType
//		# Parameter to startExternalParse().
//		static final OT_HTML = 1; # like parse()
//		static final OT_WIKI = 2; # like preSaveTransform()
//		static final OT_PREPROCESS = 3; # like preprocess()
//		static final OT_MSG = 3;
//		static final OT_PLAIN = 4; # like extractSections() - portions of the original are returned unchanged.
//
//		/**
//		* @var String Prefix and suffix for temporary replacement strings
//		* for the multipass parser.
//		*
//		* \x7f should never appear in input as it's disallowed in XML.
//		* Using it at the front also gives us a little extra robustness
//		* since it shouldn't match when butted up against identifier-like
//		* String constructs.
//		*
//		* Must not consist of all title characters, or else it will change
//		* the behavior of <nowiki> in a link.
//		*
//		* Must have a character that needs escaping in attributes, otherwise
//		* someone could put a strip marker in an attribute, to get around
//		* escaping quote marks, and break out of the attribute. Thus we add
//		* `'".
//		*/
//		static final MARKER_SUFFIX = "-QINU`\"'\x7f";
//		static final MARKER_PREFIX = "\x7f'\"`UNIQ-";
//
//		# Markers used for wrapping the table of contents
//		static final TOC_START = '<mw:toc>';
//		static final TOC_END = '</mw:toc>';
//
//		# Persistent:
//		public $mTagHooks = [];
//		public $mTransparentTagHooks = [];
//		public $mFunctionHooks = [];
//		public $mFunctionSynonyms = [ 0 => [], 1 => [] ];
//		public $mFunctionTagHooks = [];
//		public $mStripList = [];
//		public $mDefaultStripList = [];
//		public $mVarCache = [];
//		public $mImageParams = [];
//		public $mImageParamsMagicArray = [];
//		public $mMarkerIndex = 0;
//		public $mFirstCall = true;
//
//		# Initialised by initialiseVariables()
//
//		/**
//		* @var MagicWordArray
//		*/
//		public $mVariables;
//
//		/**
//		* @var MagicWordArray
//		*/
//		public $mSubstWords;
//		# Initialised in constructor
//		public $mConf, $mExtLinkBracketedRegex, $mUrlProtocols;
//
//		# Initialized in getPreprocessor()
//		/** @var Preprocessor */
//		public $mPreprocessor;
//
//		# Cleared with clearState():
//		/**
//		* @var ParserOutput
//		*/
//		public $mOutput;
//		public $mAutonumber;
//
//		/**
//		* @var StripState
//		*/
//		public $mStripState;
//
//		public $mIncludeCount;
//		/**
//		* @var LinkHolderArray
//		*/
//		public $mLinkHolders;

	private int mLinkID;
//		public $mIncludeSizes, $mPPNodeCount, $mGeneratedPPNodeCount, $mHighestExpansionDepth;
//		public $mDefaultSort;
//		public $mTplRedirCache, $mTplDomCache, $mHeadings, $mDoubleUnderscores;
//		public $mExpensiveFunctionCount; # number of expensive parser function calls
//		public $mShowToc, $mForceTocPosition;
//
//		/**
//		* @var User
//		*/
//		public $mUser; # User Object; only used when doing pre-save transform
//
//		# Temporary
//		# These are variables reset at least once per parse regardless of $clearState
//
//		/**
//		* @var ParserOptions
//		*/
//		public $mOptions;
//
//		/**
//		* @var Title
//		*/
//		public $mTitle;        # Title context, used for self-link rendering and similar things
//		public $mOutputType;   # Output type, one of the OT_xxx constants
//		public $ot;            # Shortcut alias, see setOutputType()
//		public $mRevisionObject; # The revision Object of the specified revision ID
//		public $mRevisionId;   # ID to display in {{REVISIONID}} tags
//		public $mRevisionTimestamp; # The timestamp of the specified revision ID
//		public $mRevisionUser; # User to display in {{REVISIONUSER}} tag
//		public $mRevisionSize; # Size to display in {{REVISIONSIZE}} variable
//		public $mRevIdForTs;   # The revision ID which was used to fetch the timestamp
//		public $mInputSize = false; # For {{PAGESIZE}} on current page.
//
//		/**
//		* @var String Deprecated accessor for the strip marker prefix.
//		* @deprecated since 1.26; use Parser::MARKER_PREFIX instead.
//		*/
//		public $mUniqPrefix = Parser::MARKER_PREFIX;
//
//		/**
//		* @var array Array with the language name of each language link (i.e. the
//		* interwiki prefix) in the key, value arbitrary. Used to avoid sending
//		* duplicate language links to the ParserOutput.
//		*/
//		public $mLangLinkLanguages;
//
//		/**
//		* @var MapCacheLRU|null
//		* @since 1.24
//		*
//		* A cache of the current revisions of titles. Keys are $title->getPrefixedDbKey()
//		*/
//		public $currentRevisionCache;
//
//		/**
//		* @var boolean Recursive call protection.
//		* This variable should be treated as if it were private.
//		*/
//		public $mInParse = false;
//
//		/** @var SectionProfiler */
//		protected $mProfiler;

	/**
	* @var LinkRenderer
	*/
	private Xomw_link_renderer mLinkRenderer;

	private final    XomwSanitizer sanitizer = new XomwSanitizer();

//		/**
//		* @param array $conf
//		*/
//		public function __construct($conf = []) {
//			this.mConf = $conf;
//			this.mUrlProtocols = wfUrlProtocols();
//			this.mExtLinkBracketedRegex = '/\[(((?i)' . this.mUrlProtocols . ')' .
//				self::EXT_LINK_ADDR .
//				self::EXT_LINK_URL_CLASS . '*)\p{Zs}*([^\]\\x00-\\x08\\x0a-\\x1F]*?)\]/Su';
//			if (isset($conf['preprocessorClass'])) {
//				this.mPreprocessorClass = $conf['preprocessorClass'];
//			} elseif (defined('HPHP_VERSION')) {
//				# Preprocessor_Hash is much faster than Preprocessor_DOM under HipHop
//				this.mPreprocessorClass = 'Preprocessor_Hash';
//			} elseif (extension_loaded('domxml')) {
//				# PECL extension that conflicts with the core DOM extension (T15770)
//				wfDebug("Warning: you have the obsolete domxml extension for PHP. Please remove it!\n");
//				this.mPreprocessorClass = 'Preprocessor_Hash';
//			} elseif (extension_loaded('dom')) {
//				this.mPreprocessorClass = 'Preprocessor_DOM';
//			} else {
//				this.mPreprocessorClass = 'Preprocessor_Hash';
//			}
//			wfDebug(__CLASS__ . ": using preprocessor: {this.mPreprocessorClass}\n");
//		}
//
//		/**
//		* Reduce memory usage to reduce the impact of circular references
//		*/
//		public function __destruct() {
//			if (isset(this.mLinkHolders)) {
//				unset(this.mLinkHolders);
//			}
//			foreach ($this as $name => $value) {
//				unset(this.$name);
//			}
//		}
//
//		/**
//		* Allow extensions to clean up when the parser is cloned
//		*/
//		public function __clone() {
//			this.mInParse = false;
//
//			// T58226: When you create a reference "to" an Object field, that
//			// makes the Object field itself be a reference too (until the other
//			// reference goes out of scope). When cloning, any field that's a
//			// reference is copied as a reference in the new Object. Both of these
//			// are defined PHP5 behaviors, as inconvenient as it is for us when old
//			// hooks from PHP4 days are passing fields by reference.
//			foreach ([ 'mStripState', 'mVarCache' ] as $k) {
//				// Make a non-reference copy of the field, then rebind the field to
//				// reference the new copy.
//				$tmp = this.$k;
//				this.$k =& $tmp;
//				unset($tmp);
//			}
//
//			Hooks::run('ParserCloned', [ $this ]);
//		}
//
//		/**
//		* Do various kinds of initialisation on the first call of the parser
//		*/
//		public function firstCallInit() {
//			if (!this.mFirstCall) {
//				return;
//			}
//			this.mFirstCall = false;
//
//			CoreParserFunctions::register($this);
//			CoreTagHooks::register($this);
//			this.initialiseVariables();
//
//			Hooks::run('ParserFirstCallInit', [ &$this ]);
//		}
//
//		/**
//		* Clear Parser state
//		*
//		* @private
//		*/
//		public function clearState() {
//			if (this.mFirstCall) {
//				this.firstCallInit();
//			}
//			this.mOutput = new ParserOutput;
//			this.mOptions->registerWatcher([ this.mOutput, 'recordOption' ]);
//			this.mAutonumber = 0;
//			this.mIncludeCount = [];
//			this.mLinkHolders = new LinkHolderArray($this);
//			this.mLinkID = 0;
//			this.mRevisionObject = this.mRevisionTimestamp =
//				this.mRevisionId = this.mRevisionUser = this.mRevisionSize = null;
//			this.mVarCache = [];
//			this.mUser = null;
//			this.mLangLinkLanguages = [];
//			this.currentRevisionCache = null;
//
//			this.mStripState = new StripState;
//
//			# Clear these on every parse, T6549
//			this.mTplRedirCache = this.mTplDomCache = [];
//
//			this.mShowToc = true;
//			this.mForceTocPosition = false;
//			this.mIncludeSizes = [
//				'post-expand' => 0,
//				'arg' => 0,
//			];
//			this.mPPNodeCount = 0;
//			this.mGeneratedPPNodeCount = 0;
//			this.mHighestExpansionDepth = 0;
//			this.mDefaultSort = false;
//			this.mHeadings = [];
//			this.mDoubleUnderscores = [];
//			this.mExpensiveFunctionCount = 0;
//
//			# Fix cloning
//			if (isset(this.mPreprocessor) && this.mPreprocessor->parser !== $this) {
//				this.mPreprocessor = null;
//			}
//
//			this.mProfiler = new SectionProfiler();
//
//			Hooks::run('ParserClearState', [ &$this ]);
//		}
//
//		/**
//		* Convert wikitext to HTML
//		* Do not call this function recursively.
//		*
//		* @param String $text Text we want to parse
//		* @param Title $title
//		* @param ParserOptions $options
//		* @param boolean $linestart
//		* @param boolean $clearState
//		* @param int $revid Number to pass in {{REVISIONID}}
//		* @return ParserOutput A ParserOutput
//		*/
//		public function parse(
//			$text, Title $title, ParserOptions $options,
//			$linestart = true, $clearState = true, $revid = null
//		) {
//			/**
//			* First pass--just handle <nowiki> sections, pass the rest off
//			* to internalParse() which does all the real work.
//			*/
//
//			global $wgShowHostnames;
//
//			if ($clearState) {
//				// We use U+007F DELETE to construct strip markers, so we have to make
//				// sure that this character does not occur in the input text.
//				$text = strtr($text, "\x7f", "?");
//				$magicScopeVariable = this.synchronized();
//			}
//
//			this.startParse($title, $options, self::OT_HTML, $clearState);
//
//			this.currentRevisionCache = null;
//			this.mInputSize = strlen($text);
//			if (this.mOptions->getEnableLimitReport()) {
//				this.mOutput->resetParseStartTime();
//			}
//
//			$oldRevisionId = this.mRevisionId;
//			$oldRevisionObject = this.mRevisionObject;
//			$oldRevisionTimestamp = this.mRevisionTimestamp;
//			$oldRevisionUser = this.mRevisionUser;
//			$oldRevisionSize = this.mRevisionSize;
//			if ($revid !== null) {
//				this.mRevisionId = $revid;
//				this.mRevisionObject = null;
//				this.mRevisionTimestamp = null;
//				this.mRevisionUser = null;
//				this.mRevisionSize = null;
//			}
//
//			Hooks::run('ParserBeforeStrip', [ &$this, &$text, &this.mStripState ]);
//			# No more strip!
//			Hooks::run('ParserAfterStrip', [ &$this, &$text, &this.mStripState ]);
//			$text = this.internalParse($text);
//			Hooks::run('ParserAfterParse', [ &$this, &$text, &this.mStripState ]);
//
//			$text = this.internalParseHalfParsed($text, true, $linestart);
//
//			/**
//			* A converted title will be provided in the output Object if title and
//			* content conversion are enabled, the article text does not contain
//			* a conversion-suppressing double-underscore tag, and no
//			* {{DISPLAYTITLE:...}} is present. DISPLAYTITLE takes precedence over
//			* automatic link conversion.
//			*/
//			if (!($options->getDisableTitleConversion()
//				|| isset(this.mDoubleUnderscores['nocontentconvert'])
//				|| isset(this.mDoubleUnderscores['notitleconvert'])
//				|| this.mOutput->getDisplayTitle() !== false)
//			) {
//				$convruletitle = this.getConverterLanguage()->getConvRuleTitle();
//				if ($convruletitle) {
//					this.mOutput->setTitleText($convruletitle);
//				} else {
//					$titleText = this.getConverterLanguage()->convertTitle($title);
//					this.mOutput->setTitleText($titleText);
//				}
//			}
//
//			# Done parsing! Compute runtime adaptive expiry if set
//			this.mOutput->finalizeAdaptiveCacheExpiry();
//
//			# Warn if too many heavyweight parser functions were used
//			if (this.mExpensiveFunctionCount > this.mOptions->getExpensiveParserFunctionLimit()) {
//				this.limitationWarn('expensive-parserfunction',
//					this.mExpensiveFunctionCount,
//					this.mOptions->getExpensiveParserFunctionLimit()
//				);
//			}
//
//			# Information on include size limits, for the benefit of users who try to skirt them
//			if (this.mOptions->getEnableLimitReport()) {
//				$max = this.mOptions->getMaxIncludeSize();
//
//				$cpuTime = this.mOutput->getTimeSinceStart('cpu');
//				if ($cpuTime !== null) {
//					this.mOutput->setLimitReportData('limitreport-cputime',
//						sprintf("%.3f", $cpuTime)
//					);
//				}
//
//				$wallTime = this.mOutput->getTimeSinceStart('wall');
//				this.mOutput->setLimitReportData('limitreport-walltime',
//					sprintf("%.3f", $wallTime)
//				);
//
//				this.mOutput->setLimitReportData('limitreport-ppvisitednodes',
//					[ this.mPPNodeCount, this.mOptions->getMaxPPNodeCount() ]
//				);
//				this.mOutput->setLimitReportData('limitreport-ppgeneratednodes',
//					[ this.mGeneratedPPNodeCount, this.mOptions->getMaxGeneratedPPNodeCount() ]
//				);
//				this.mOutput->setLimitReportData('limitreport-postexpandincludesize',
//					[ this.mIncludeSizes['post-expand'], $max ]
//				);
//				this.mOutput->setLimitReportData('limitreport-templateargumentsize',
//					[ this.mIncludeSizes['arg'], $max ]
//				);
//				this.mOutput->setLimitReportData('limitreport-expansiondepth',
//					[ this.mHighestExpansionDepth, this.mOptions->getMaxPPExpandDepth() ]
//				);
//				this.mOutput->setLimitReportData('limitreport-expensivefunctioncount',
//					[ this.mExpensiveFunctionCount, this.mOptions->getExpensiveParserFunctionLimit() ]
//				);
//				Hooks::run('ParserLimitReportPrepare', [ $this, this.mOutput ]);
//
//				$limitReport = "NewPP limit report\n";
//				if ($wgShowHostnames) {
//					$limitReport .= 'Parsed by ' . wfHostname() . "\n";
//				}
//				$limitReport .= 'Cached time: ' . this.mOutput->getCacheTime() . "\n";
//				$limitReport .= 'Cache expiry: ' . this.mOutput->getCacheExpiry() . "\n";
//				$limitReport .= 'Dynamic content: ' .
//					(this.mOutput->hasDynamicContent() ? 'true' : 'false') .
//					"\n";
//
//				foreach (this.mOutput->getLimitReportData() as $key => $value) {
//					if (Hooks::run('ParserLimitReportFormat',
//						[ $key, &$value, &$limitReport, false, false ]
//					)) {
//						$keyMsg = wfMessage($key)->inLanguage('en')->useDatabase(false);
//						$valueMsg = wfMessage([ "$key-value-text", "$key-value" ])
//							->inLanguage('en')->useDatabase(false);
//						if (!$valueMsg->exists()) {
//							$valueMsg = new RawMessage('$1');
//						}
//						if (!$keyMsg->isDisabled() && !$valueMsg->isDisabled()) {
//							$valueMsg->params($value);
//							$limitReport .= "{$keyMsg->text()}: {$valueMsg->text()}\n";
//						}
//					}
//				}
//				// Since we're not really outputting HTML, decode the entities and
//				// then re-encode the things that need hiding inside HTML comments.
//				$limitReport = htmlspecialchars_decode($limitReport);
//				Hooks::run('ParserLimitReport', [ $this, &$limitReport ]);
//
//				// Sanitize for comment. Note '-' in the replacement is U+2010,
//				// which looks much like the problematic '-'.
//				$limitReport = str_replace([ '-', '&' ], [ '-', '&amp;' ], $limitReport);
//				$text .= "\n<!-- \n$limitReport-->\n";
//
//				// Add on template profiling data in human/machine readable way
//				$dataByFunc = this.mProfiler->getFunctionStats();
//				uasort($dataByFunc, function ($a, $b) {
//					return $a['real'] < $b['real']; // descending order
//				});
//				$profileReport = [];
//				foreach (array_slice($dataByFunc, 0, 10) as $item) {
//					$profileReport[] = sprintf("%6.2f%% %8.3f %6d %s",
//						$item['%real'], $item['real'], $item['calls'],
//						htmlspecialchars($item['name']));
//				}
//				$text .= "<!--\nTransclusion expansion time report (%,ms,calls,template)\n";
//				$text .= implode("\n", $profileReport) . "\n-->\n";
//
//				this.mOutput->setLimitReportData('limitreport-timingprofile', $profileReport);
//
//				// Add other cache related metadata
//				if ($wgShowHostnames) {
//					this.mOutput->setLimitReportData('cachereport-origin', wfHostname());
//				}
//				this.mOutput->setLimitReportData('cachereport-timestamp',
//					this.mOutput->getCacheTime());
//				this.mOutput->setLimitReportData('cachereport-ttl',
//					this.mOutput->getCacheExpiry());
//				this.mOutput->setLimitReportData('cachereport-transientcontent',
//					this.mOutput->hasDynamicContent());
//
//				if (this.mGeneratedPPNodeCount > this.mOptions->getMaxGeneratedPPNodeCount() / 10) {
//					wfDebugLog('generated-pp-node-count', this.mGeneratedPPNodeCount . ' ' .
//						this.mTitle->getPrefixedDBkey());
//				}
//			}
//			this.mOutput->setText($text);
//
//			this.mRevisionId = $oldRevisionId;
//			this.mRevisionObject = $oldRevisionObject;
//			this.mRevisionTimestamp = $oldRevisionTimestamp;
//			this.mRevisionUser = $oldRevisionUser;
//			this.mRevisionSize = $oldRevisionSize;
//			this.mInputSize = false;
//			this.currentRevisionCache = null;
//
//			return this.mOutput;
//		}
//
//		/**
//		* Half-parse wikitext to half-parsed HTML. This recursive parser entry point
//		* can be called from an extension tag hook.
//		*
//		* The output of this function IS NOT SAFE PARSED HTML; it is "half-parsed"
//		* instead, which means that lists and links have not been fully parsed yet,
//		* and strip markers are still present.
//		*
//		* Use recursiveTagParseFully() to fully parse wikitext to output-safe HTML.
//		*
//		* Use this function if you're a parser tag hook and you want to parse
//		* wikitext before or after applying additional transformations, and you
//		* intend to *return the result as hook output*, which will cause it to go
//		* through the rest of parsing process automatically.
//		*
//		* If $frame is not provided, then template variables (e.g., {{{1}}}) within
//		* $text are not expanded
//		*
//		* @param String $text Text extension wants to have parsed
//		* @param boolean|PPFrame $frame The frame to use for expanding any template variables
//		* @return String UNSAFE half-parsed HTML
//		*/
//		public function recursiveTagParse($text, $frame = false) {
//			Hooks::run('ParserBeforeStrip', [ &$this, &$text, &this.mStripState ]);
//			Hooks::run('ParserAfterStrip', [ &$this, &$text, &this.mStripState ]);
//			$text = this.internalParse($text, false, $frame);
//			return $text;
//		}
//
//		/**
//		* Fully parse wikitext to fully parsed HTML. This recursive parser entry
//		* point can be called from an extension tag hook.
//		*
//		* The output of this function is fully-parsed HTML that is safe for output.
//		* If you're a parser tag hook, you might want to use recursiveTagParse()
//		* instead.
//		*
//		* If $frame is not provided, then template variables (e.g., {{{1}}}) within
//		* $text are not expanded
//		*
//		* @since 1.25
//		*
//		* @param String $text Text extension wants to have parsed
//		* @param boolean|PPFrame $frame The frame to use for expanding any template variables
//		* @return String Fully parsed HTML
//		*/
//		public function recursiveTagParseFully($text, $frame = false) {
//			$text = this.recursiveTagParse($text, $frame);
//			$text = this.internalParseHalfParsed($text, false);
//			return $text;
//		}
//
//		/**
//		* Expand templates and variables in the text, producing valid, static wikitext.
//		* Also removes comments.
//		* Do not call this function recursively.
//		* @param String $text
//		* @param Title $title
//		* @param ParserOptions $options
//		* @param int|null $revid
//		* @param boolean|PPFrame $frame
//		* @return mixed|String
//		*/
//		public function preprocess($text, Title $title = null,
//			ParserOptions $options, $revid = null, $frame = false
//		) {
//			$magicScopeVariable = this.synchronized();
//			this.startParse($title, $options, self::OT_PREPROCESS, true);
//			if ($revid !== null) {
//				this.mRevisionId = $revid;
//			}
//			Hooks::run('ParserBeforeStrip', [ &$this, &$text, &this.mStripState ]);
//			Hooks::run('ParserAfterStrip', [ &$this, &$text, &this.mStripState ]);
//			$text = this.replaceVariables($text, $frame);
//			$text = this.mStripState->unstripBoth($text);
//			return $text;
//		}
//
//		/**
//		* Recursive parser entry point that can be called from an extension tag
//		* hook.
//		*
//		* @param String $text Text to be expanded
//		* @param boolean|PPFrame $frame The frame to use for expanding any template variables
//		* @return String
//		* @since 1.19
//		*/
//		public function recursivePreprocess($text, $frame = false) {
//			$text = this.replaceVariables($text, $frame);
//			$text = this.mStripState->unstripBoth($text);
//			return $text;
//		}
//
//		/**
//		* Process the wikitext for the "?preload=" feature. (T7210)
//		*
//		* "<noinclude>", "<includeonly>" etc. are parsed as for template
//		* transclusion, comments, templates, arguments, tags hooks and parser
//		* functions are untouched.
//		*
//		* @param String $text
//		* @param Title $title
//		* @param ParserOptions $options
//		* @param array $params
//		* @return String
//		*/
//		public function getPreloadText($text, Title $title, ParserOptions $options, $params = []) {
//			$msg = new RawMessage($text);
//			$text = $msg->params($params)->plain();
//
//			# Parser (re)initialisation
//			$magicScopeVariable = this.synchronized();
//			this.startParse($title, $options, self::OT_PLAIN, true);
//
//			$flags = PPFrame::NO_ARGS | PPFrame::NO_TEMPLATES;
//			$dom = this.preprocessToDom($text, self::PTD_FOR_INCLUSION);
//			$text = this.getPreprocessor()->newFrame()->expand($dom, $flags);
//			$text = this.mStripState->unstripBoth($text);
//			return $text;
//		}
//
//		/**
//		* Get a random String
//		*
//		* @return String
//		* @deprecated since 1.26; use wfRandomString() instead.
//		*/
//		public static function getRandomString() {
//			wfDeprecated(__METHOD__, '1.26');
//			return wfRandomString(16);
//		}
//
//		/**
//		* Set the current user.
//		* Should only be used when doing pre-save transform.
//		*
//		* @param User|null $user User Object or null (to reset)
//		*/
//		public function setUser($user) {
//			this.mUser = $user;
//		}
//
//		/**
//		* Accessor for mUniqPrefix.
//		*
//		* @return String
//		* @deprecated since 1.26; use Parser::MARKER_PREFIX instead.
//		*/
//		public function uniqPrefix() {
//			wfDeprecated(__METHOD__, '1.26');
//			return self::MARKER_PREFIX;
//		}
//
//		/**
//		* Set the context title
//		*
//		* @param Title $t
//		*/
//		public function setTitle($t) {
//			if (!$t) {
//				$t = Title::newFromText('NO TITLE');
//			}
//
//			if ($t->hasFragment()) {
//				# Strip the fragment to avoid various odd effects
//				this.mTitle = $t->createFragmentTarget('');
//			} else {
//				this.mTitle = $t;
//			}
//		}
//
//		/**
//		* Accessor for the Title Object
//		*
//		* @return Title
//		*/
//		public function getTitle() {
//			return this.mTitle;
//		}
//
//		/**
//		* Accessor/mutator for the Title Object
//		*
//		* @param Title $x Title Object or null to just get the current one
//		* @return Title
//		*/
//		public function Title($x = null) {
//			return wfSetVar(this.mTitle, $x);
//		}
//
//		/**
//		* Set the output type
//		*
//		* @param int $ot New value
//		*/
//		public function setOutputType($ot) {
//			this.mOutputType = $ot;
//			# Shortcut alias
//			this.ot = [
//				'html' => $ot == self::OT_HTML,
//				'wiki' => $ot == self::OT_WIKI,
//				'pre' => $ot == self::OT_PREPROCESS,
//				'plain' => $ot == self::OT_PLAIN,
//			];
//		}
//
//		/**
//		* Accessor/mutator for the output type
//		*
//		* @param int|null $x New value or null to just get the current one
//		* @return int
//		*/
//		public function OutputType($x = null) {
//			return wfSetVar(this.mOutputType, $x);
//		}
//
//		/**
//		* Get the ParserOutput Object
//		*
//		* @return ParserOutput
//		*/
//		public function getOutput() {
//			return this.mOutput;
//		}
//
//		/**
//		* Get the ParserOptions Object
//		*
//		* @return ParserOptions
//		*/
//		public function getOptions() {
//			return this.mOptions;
//		}
//
//		/**
//		* Accessor/mutator for the ParserOptions Object
//		*
//		* @param ParserOptions $x New value or null to just get the current one
//		* @return ParserOptions Current ParserOptions Object
//		*/
//		public function Options($x = null) {
//			return wfSetVar(this.mOptions, $x);
//		}

	/**
	* @return int
	*/
	public int nextLinkID() {
		return this.mLinkID++;
	}

//		/**
//		* @param int $id
//		*/
//		public function setLinkID($id) {
//			this.mLinkID = $id;
//		}
//
//		/**
//		* Get a language Object for use in parser functions such as {{FORMATNUM:}}
//		* @return Language
//		*/
//		public function getFunctionLang() {
//			return this.getTargetLanguage();
//		}
//
//		/**
//		* Get the target language for the content being parsed. This is usually the
//		* language that the content is in.
//		*
//		* @since 1.19
//		*
//		* @throws MWException
//		* @return Language
//		*/
//		public function getTargetLanguage() {
//			$target = this.mOptions->getTargetLanguage();
//
//			if ($target !== null) {
//				return $target;
//			} elseif (this.mOptions->getInterfaceMessage()) {
//				return this.mOptions->getUserLangObj();
//			} elseif (is_null(this.mTitle)) {
//				throw new MWException(__METHOD__ . ': this.mTitle is null');
//			}
//
//			return this.mTitle->getPageLanguage();
//		}
//
//		/**
//		* Get the language Object for language conversion
//		* @return Language|null
//		*/
//		public function getConverterLanguage() {
//			return this.getTargetLanguage();
//		}
//
//		/**
//		* Get a User Object either from this.mUser, if set, or from the
//		* ParserOptions Object otherwise
//		*
//		* @return User
//		*/
//		public function getUser() {
//			if (!is_null(this.mUser)) {
//				return this.mUser;
//			}
//			return this.mOptions->getUser();
//		}
//
//		/**
//		* Get a preprocessor Object
//		*
//		* @return Preprocessor
//		*/
//		public function getPreprocessor() {
//			if (!isset(this.mPreprocessor)) {
//				$class = this.mPreprocessorClass;
//				this.mPreprocessor = new $class($this);
//			}
//			return this.mPreprocessor;
//		}

	/**
	* Get a LinkRenderer instance to make links with
	*
	* @since 1.28
	* @return LinkRenderer
	*/
	public Xomw_link_renderer getLinkRenderer() {
		if (this.mLinkRenderer == null) {
//				this.mLinkRenderer = XomwMediaWikiServices.getInstance()
//					.getLinkRendererFactory()->create();
//				this.mLinkRenderer->setStubThreshold(
//					this.getOptions()->getStubThreshold()
//				);
			this.mLinkRenderer = new Xomw_link_renderer(sanitizer);
		}

		return this.mLinkRenderer;
	}

//		/**
//		* Replaces all occurrences of HTML-style comments and the given tags
//		* in the text with a random marker and returns the next text. The output
//		* parameter $matches will be an associative array filled with data in
//		* the form:
//		*
//		* @code
//		*   'UNIQ-xxxxx' => [
//		*     'element',
//		*     'tag content',
//		*     [ 'param' => 'x' ],
//		*     '<element param="x">tag content</element>' ]
//		* @endcode
//		*
//		* @param array $elements List of element names. Comments are always extracted.
//		* @param String $text Source text String.
//		* @param array $matches Out parameter, Array: extracted tags
//		* @param String|null $uniq_prefix
//		* @return String Stripped text
//		* @since 1.26 The uniq_prefix argument is deprecated.
//		*/
//		public static function extractTagsAndParams($elements, $text, &$matches, $uniq_prefix = null) {
//			if ($uniq_prefix !== null) {
//				wfDeprecated(__METHOD__ . ' called with $prefix argument', '1.26');
//			}
//			static $n = 1;
//			$stripped = '';
//			$matches = [];
//
//			$taglist = implode('|', $elements);
//			$start = "/<($taglist)(\\s+[^>]*?|\\s*?)(\/?" . ">)|<(!--)/i";
//
//			while ($text != '') {
//				$p = preg_split($start, $text, 2, PREG_SPLIT_DELIM_CAPTURE);
//				$stripped .= $p[0];
//				if (count($p) < 5) {
//					break;
//				}
//				if (count($p) > 5) {
//					# comment
//					$element = $p[4];
//					$attributes = '';
//					$close = '';
//					$inside = $p[5];
//				} else {
//					# tag
//					$element = $p[1];
//					$attributes = $p[2];
//					$close = $p[3];
//					$inside = $p[4];
//				}
//
//				$marker = self::MARKER_PREFIX . "-$element-" . sprintf('%08X', $n++) . self::MARKER_SUFFIX;
//				$stripped .= $marker;
//
//				if ($close === '/>') {
//					# Empty element tag, <tag />
//					$content = null;
//					$text = $inside;
//					$tail = null;
//				} else {
//					if ($element === '!--') {
//						$end = '/(-->)/';
//					} else {
//						$end = "/(<\\/$element\\s*>)/i";
//					}
//					$q = preg_split($end, $inside, 2, PREG_SPLIT_DELIM_CAPTURE);
//					$content = $q[0];
//					if (count($q) < 3) {
//						# No end tag -- let it run out to the end of the text.
//						$tail = '';
//						$text = '';
//					} else {
//						$tail = $q[1];
//						$text = $q[2];
//					}
//				}
//
//				$matches[$marker] = [ $element,
//					$content,
//					Sanitizer::decodeTagAttributes($attributes),
//					"<$element$attributes$close$content$tail" ];
//			}
//			return $stripped;
//		}
//
//		/**
//		* Get a list of strippable XML-like elements
//		*
//		* @return array
//		*/
//		public function getStripList() {
//			return this.mStripList;
//		}
//
//		/**
//		* Add an item to the strip state
//		* Returns the unique tag which must be inserted into the stripped text
//		* The tag will be replaced with the original text in unstrip()
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function insertStripItem($text) {
//			$marker = self::MARKER_PREFIX . "-item-{this.mMarkerIndex}-" . self::MARKER_SUFFIX;
//			this.mMarkerIndex++;
//			this.mStripState->addGeneral($marker, $text);
//			return $marker;
//		}
//
//		/**
//		* parse the wiki syntax used to render tables
//		*
//		* @private
//		* @param String $text
//		* @return String
//		*/
//		public function doTableStuff($text) {
//
//			$lines = StringUtils::explode("\n", $text);
//			$out = '';
//			$td_history = []; # Is currently a td tag open?
//			$last_tag_history = []; # Save history of last lag activated (td, th or caption)
//			$tr_history = []; # Is currently a tr tag open?
//			$tr_attributes = []; # history of tr attributes
//			$has_opened_tr = []; # Did this table open a <tr> element?
//			$indent_level = 0; # indent level of the table
//
//			foreach ($lines as $outLine) {
//				$line = trim($outLine);
//
//				if ($line === '') { # empty line, go to next line
//					$out .= $outLine . "\n";
//					continue;
//				}
//
//				$first_character = $line[0];
//				$first_two = substr($line, 0, 2);
//				$matches = [];
//
//				if (preg_match('/^(:*)\s*\{\|(.*)$/', $line, $matches)) {
//					# First check if we are starting a new table
//					$indent_level = strlen($matches[1]);
//
//					$attributes = this.mStripState->unstripBoth($matches[2]);
//					$attributes = Sanitizer::fixTagAttributes($attributes, 'table');
//
//					$outLine = str_repeat('<dl><dd>', $indent_level) . "<table{$attributes}>";
//					array_push($td_history, false);
//					array_push($last_tag_history, '');
//					array_push($tr_history, false);
//					array_push($tr_attributes, '');
//					array_push($has_opened_tr, false);
//				} elseif (count($td_history) == 0) {
//					# Don't do any of the following
//					$out .= $outLine . "\n";
//					continue;
//				} elseif ($first_two === '|}') {
//					# We are ending a table
//					$line = '</table>' . substr($line, 2);
//					$last_tag = array_pop($last_tag_history);
//
//					if (!array_pop($has_opened_tr)) {
//						$line = "<tr><td></td></tr>{$line}";
//					}
//
//					if (array_pop($tr_history)) {
//						$line = "</tr>{$line}";
//					}
//
//					if (array_pop($td_history)) {
//						$line = "</{$last_tag}>{$line}";
//					}
//					array_pop($tr_attributes);
//					$outLine = $line . str_repeat('</dd></dl>', $indent_level);
//				} elseif ($first_two === '|-') {
//					# Now we have a table row
//					$line = preg_replace('#^\|-+#', '', $line);
//
//					# Whats after the tag is now only attributes
//					$attributes = this.mStripState->unstripBoth($line);
//					$attributes = Sanitizer::fixTagAttributes($attributes, 'tr');
//					array_pop($tr_attributes);
//					array_push($tr_attributes, $attributes);
//
//					$line = '';
//					$last_tag = array_pop($last_tag_history);
//					array_pop($has_opened_tr);
//					array_push($has_opened_tr, true);
//
//					if (array_pop($tr_history)) {
//						$line = '</tr>';
//					}
//
//					if (array_pop($td_history)) {
//						$line = "</{$last_tag}>{$line}";
//					}
//
//					$outLine = $line;
//					array_push($tr_history, false);
//					array_push($td_history, false);
//					array_push($last_tag_history, '');
//				} elseif ($first_character === '|'
//					|| $first_character === '!'
//					|| $first_two === '|+'
//				) {
//					# This might be cell elements, td, th or captions
//					if ($first_two === '|+') {
//						$first_character = '+';
//						$line = substr($line, 2);
//					} else {
//						$line = substr($line, 1);
//					}
//
//					// Implies both are valid for table headings.
//					if ($first_character === '!') {
//						$line = StringUtils::replaceMarkup('!!', '||', $line);
//					}
//
//					# Split up multiple cells on the same line.
//					# FIXME : This can result in improper nesting of tags processed
//					# by earlier parser steps.
//					$cells = explode('||', $line);
//
//					$outLine = '';
//
//					# Loop through each table cell
//					foreach ($cells as $cell) {
//						$previous = '';
//						if ($first_character !== '+') {
//							$tr_after = array_pop($tr_attributes);
//							if (!array_pop($tr_history)) {
//								$previous = "<tr{$tr_after}>\n";
//							}
//							array_push($tr_history, true);
//							array_push($tr_attributes, '');
//							array_pop($has_opened_tr);
//							array_push($has_opened_tr, true);
//						}
//
//						$last_tag = array_pop($last_tag_history);
//
//						if (array_pop($td_history)) {
//							$previous = "</{$last_tag}>\n{$previous}";
//						}
//
//						if ($first_character === '|') {
//							$last_tag = 'td';
//						} elseif ($first_character === '!') {
//							$last_tag = 'th';
//						} elseif ($first_character === '+') {
//							$last_tag = 'caption';
//						} else {
//							$last_tag = '';
//						}
//
//						array_push($last_tag_history, $last_tag);
//
//						# A cell could contain both parameters and data
//						$cell_data = explode('|', $cell, 2);
//
//						# T2553: Note that a '|' inside an invalid link should not
//						# be mistaken as delimiting cell parameters
//						# Bug T153140: Neither should language converter markup.
//						if (preg_match('/\[\[|-\{/', $cell_data[0]) === 1) {
//							$cell = "{$previous}<{$last_tag}>{$cell}";
//						} elseif (count($cell_data) == 1) {
//							$cell = "{$previous}<{$last_tag}>{$cell_data[0]}";
//						} else {
//							$attributes = this.mStripState->unstripBoth($cell_data[0]);
//							$attributes = Sanitizer::fixTagAttributes($attributes, $last_tag);
//							$cell = "{$previous}<{$last_tag}{$attributes}>{$cell_data[1]}";
//						}
//
//						$outLine .= $cell;
//						array_push($td_history, true);
//					}
//				}
//				$out .= $outLine . "\n";
//			}
//
//			# Closing open td, tr && table
//			while (count($td_history) > 0) {
//				if (array_pop($td_history)) {
//					$out .= "</td>\n";
//				}
//				if (array_pop($tr_history)) {
//					$out .= "</tr>\n";
//				}
//				if (!array_pop($has_opened_tr)) {
//					$out .= "<tr><td></td></tr>\n";
//				}
//
//				$out .= "</table>\n";
//			}
//
//			# Remove trailing line-ending (b/c)
//			if (substr($out, -1) === "\n") {
//				$out = substr($out, 0, -1);
//			}
//
//			# special case: don't return empty table
//			if ($out === "<table>\n<tr><td></td></tr>\n</table>") {
//				$out = '';
//			}
//
//			return $out;
//		}
//
//		/**
//		* Helper function for parse() that transforms wiki markup into half-parsed
//		* HTML. Only called for $mOutputType == self::OT_HTML.
//		*
//		* @private
//		*
//		* @param String $text The text to parse
//		* @param boolean $isMain Whether this is being called from the main parse() function
//		* @param PPFrame|boolean $frame A pre-processor frame
//		*
//		* @return String
//		*/
//		public function internalParse($text, $isMain = true, $frame = false) {
//
//			$origText = $text;
//
//			# Hook to suspend the parser in this state
//			if (!Hooks::run('ParserBeforeInternalParse', [ &$this, &$text, &this.mStripState ])) {
//				return $text;
//			}
//
//			# if $frame is provided, then use $frame for replacing any variables
//			if ($frame) {
//				# use frame depth to infer how include/noinclude tags should be handled
//				# depth=0 means this is the top-level document; otherwise it's an included document
//				if (!$frame->depth) {
//					$flag = 0;
//				} else {
//					$flag = Parser::PTD_FOR_INCLUSION;
//				}
//				$dom = this.preprocessToDom($text, $flag);
//				$text = $frame->expand($dom);
//			} else {
//				# if $frame is not provided, then use old-style replaceVariables
//				$text = this.replaceVariables($text);
//			}
//
//			Hooks::run('InternalParseBeforeSanitize', [ &$this, &$text, &this.mStripState ]);
//			$text = Sanitizer::removeHTMLtags(
//				$text,
//				[ &$this, 'attributeStripCallback' ],
//				false,
//				array_keys(this.mTransparentTagHooks),
//				[],
//				[ &$this, 'addTrackingCategory' ]
//			);
//			Hooks::run('InternalParseBeforeLinks', [ &$this, &$text, &this.mStripState ]);
//
//			# Tables need to come after variable replacement for things to work
//			# properly; putting them before other transformations should keep
//			# exciting things like link expansions from showing up in surprising
//			# places.
//			$text = this.doTableStuff($text);
//
//			$text = preg_replace('/(^|\n)-----*/', '\\1<hr />', $text);
//
//			$text = this.doDoubleUnderscore($text);
//
//			$text = this.doHeadings($text);
//			$text = this.replaceInternalLinks($text);
//			$text = this.doAllQuotes($text);
//			$text = this.replaceExternalLinks($text);
//
//			# replaceInternalLinks may sometimes leave behind
//			# absolute URLs, which have to be masked to hide them from replaceExternalLinks
//			$text = str_replace(self::MARKER_PREFIX . 'NOPARSE', '', $text);
//
//			$text = this.doMagicLinks($text);
//			$text = this.formatHeadings($text, $origText, $isMain);
//
//			return $text;
//		}
//
//		/**
//		* Helper function for parse() that transforms half-parsed HTML into fully
//		* parsed HTML.
//		*
//		* @param String $text
//		* @param boolean $isMain
//		* @param boolean $linestart
//		* @return String
//		*/
//		private function internalParseHalfParsed($text, $isMain = true, $linestart = true) {
//			$text = this.mStripState->unstripGeneral($text);
//
//			if ($isMain) {
//				Hooks::run('ParserAfterUnstrip', [ &$this, &$text ]);
//			}
//
//			# Clean up special characters, only run once, next-to-last before doBlockLevels
//			$fixtags = [
//				# French spaces, last one Guillemet-left
//				# only if there is something before the space
//				'/(.) (?=\\?|:|;|!|%|\\302\\273)/' => '\\1&#160;',
//				# french spaces, Guillemet-right
//				'/(\\302\\253) /' => '\\1&#160;',
//				'/&#160;(!\s*important)/' => ' \\1', # Beware of CSS magic word !important, T13874.
//			];
//			$text = preg_replace(array_keys($fixtags), array_values($fixtags), $text);
//
//			$text = this.doBlockLevels($text, $linestart);
//
//			this.replaceLinkHolders($text);
//
//			/**
//			* The input doesn't get language converted if
//			* a) It's disabled
//			* b) Content isn't converted
//			* c) It's a conversion table
//			* d) it is an interface message (which is in the user language)
//			*/
//			if (!(this.mOptions->getDisableContentConversion()
//				|| isset(this.mDoubleUnderscores['nocontentconvert']))
//			) {
//				if (!this.mOptions->getInterfaceMessage()) {
//					# The position of the convert() call should not be changed. it
//					# assumes that the links are all replaced and the only thing left
//					# is the <nowiki> mark.
//					$text = this.getConverterLanguage()->convert($text);
//				}
//			}
//
//			$text = this.mStripState->unstripNoWiki($text);
//
//			if ($isMain) {
//				Hooks::run('ParserBeforeTidy', [ &$this, &$text ]);
//			}
//
//			$text = this.replaceTransparentTags($text);
//			$text = this.mStripState->unstripGeneral($text);
//
//			$text = Sanitizer::normalizeCharReferences($text);
//
//			if (MWTidy::isEnabled()) {
//				if (this.mOptions->getTidy()) {
//					$text = MWTidy::tidy($text);
//				}
//			} else {
//				# attempt to sanitize at least some nesting problems
//				# (T4702 and quite a few others)
//				$tidyregs = [
//					# ''Something [http://www.cool.com cool''] -->
//					# <i>Something</i><a href="http://www.cool.com"..><i>cool></i></a>
//					'/(<([bi])>)(<([bi])>)?([^<]*)(<\/?a[^<]*>)([^<]*)(<\/\\4>)?(<\/\\2>)/' =>
//					'\\1\\3\\5\\8\\9\\6\\1\\3\\7\\8\\9',
//					# fix up an anchor inside another anchor, only
//					# at least for a single single nested link (T5695)
//					'/(<a[^>]+>)([^<]*)(<a[^>]+>[^<]*)<\/a>(.*)<\/a>/' =>
//					'\\1\\2</a>\\3</a>\\1\\4</a>',
//					# fix div inside inline elements- doBlockLevels won't wrap a line which
//					# contains a div, so fix it up here; replace
//					# div with escaped text
//					'/(<([aib]) [^>]+>)([^<]*)(<div([^>]*)>)(.*)(<\/div>)([^<]*)(<\/\\2>)/' =>
//					'\\1\\3&lt;div\\5&gt;\\6&lt;/div&gt;\\8\\9',
//					# remove empty italic or bold tag pairs, some
//					# introduced by rules above
//					'/<([bi])><\/\\1>/' => '',
//				];
//
//				$text = preg_replace(
//					array_keys($tidyregs),
//					array_values($tidyregs),
//					$text);
//			}
//
//			if ($isMain) {
//				Hooks::run('ParserAfterTidy', [ &$this, &$text ]);
//			}
//
//			return $text;
//		}
//
//		/**
//		* Replace special strings like "ISBN xxx" and "RFC xxx" with
//		* magic external links.
//		*
//		* DML
//		* @private
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function doMagicLinks($text) {
//			$prots = wfUrlProtocolsWithoutProtRel();
//			$urlChar = self::EXT_LINK_URL_CLASS;
//			$addr = self::EXT_LINK_ADDR;
//			$space = self::SPACE_NOT_NL; #  non-newline space
//			$spdash = "(?:-|$space)"; # a dash or a non-newline space
//			$spaces = "$space++"; # possessive match of 1 or more spaces
//			$text = preg_replace_callback(
//				'!(?:                            # Start cases
//					(<a[ \t\r\n>].*?</a>) |      # m[1]: Skip link text
//					(<.*?>) |                    # m[2]: Skip stuff inside
//												#       HTML elements' . "
//					(\b(?i:$prots)($addr$urlChar*)) | # m[3]: Free external links
//												# m[4]: Post-protocol path
//					\b(?:RFC|PMID) $spaces       # m[5]: RFC or PMID, capture number
//						([0-9]+)\b |
//					\bISBN $spaces (            # m[6]: ISBN, capture number
//						(?: 97[89] $spdash?)?   #  optional 13-digit ISBN prefix
//						(?: [0-9]  $spdash?){9} #  9 digits with opt. delimiters
//						[0-9Xx]                  #  check digit
//					)\b
//				)!xu", [ &$this, 'magicLinkCallback' ], $text);
//			return $text;
//		}
//
//		/**
//		* @throws MWException
//		* @param array $m
//		* @return HTML|String
//		*/
//		public function magicLinkCallback($m) {
//			if (isset($m[1]) && $m[1] !== '') {
//				# Skip anchor
//				return $m[0];
//			} elseif (isset($m[2]) && $m[2] !== '') {
//				# Skip HTML element
//				return $m[0];
//			} elseif (isset($m[3]) && $m[3] !== '') {
//				# Free external link
//				return this.makeFreeExternalLink($m[0], strlen($m[4]));
//			} elseif (isset($m[5]) && $m[5] !== '') {
//				# RFC or PMID
//				if (substr($m[0], 0, 3) === 'RFC') {
//					if (!this.mOptions->getMagicRFCLinks()) {
//						return $m[0];
//					}
//					$keyword = 'RFC';
//					$urlmsg = 'rfcurl';
//					$cssClass = 'mw-magiclink-rfc';
//					$trackingCat = 'magiclink-tracking-rfc';
//					$id = $m[5];
//				} elseif (substr($m[0], 0, 4) === 'PMID') {
//					if (!this.mOptions->getMagicPMIDLinks()) {
//						return $m[0];
//					}
//					$keyword = 'PMID';
//					$urlmsg = 'pubmedurl';
//					$cssClass = 'mw-magiclink-pmid';
//					$trackingCat = 'magiclink-tracking-pmid';
//					$id = $m[5];
//				} else {
//					throw new MWException(__METHOD__ . ': unrecognised match type "' .
//						substr($m[0], 0, 20) . '"');
//				}
//				$url = wfMessage($urlmsg, $id)->inContentLanguage()->text();
//				this.addTrackingCategory($trackingCat);
//				return Linker::makeExternalLink($url, "{$keyword} {$id}", true, $cssClass, [], this.mTitle);
//			} elseif (isset($m[6]) && $m[6] !== ''
//				&& this.mOptions->getMagicISBNLinks()
//			) {
//				# ISBN
//				$isbn = $m[6];
//				$space = self::SPACE_NOT_NL; #  non-newline space
//				$isbn = preg_replace("/$space/", ' ', $isbn);
//				$num = strtr($isbn, [
//					'-' => '',
//					' ' => '',
//					'x' => 'X',
//				]);
//				this.addTrackingCategory('magiclink-tracking-isbn');
//				return this.getLinkRenderer()->makeKnownLink(
//					SpecialPage::getTitleFor('Booksources', $num),
//					"ISBN $isbn",
//					[
//						'class' => '@gplx.Internal protected mw-magiclink-isbn',
//						'title' => false // suppress title attribute
//					]
//				);
//			} else {
//				return $m[0];
//			}
//		}
//
//		/**
//		* Make a free external link, given a user-supplied URL
//		*
//		* @param String $url
//		* @param int $numPostProto
//		*   The number of characters after the protocol.
//		* @return String HTML
//		* @private
//		*/
//		public function makeFreeExternalLink($url, $numPostProto) {
//			$trail = '';
//
//			# The characters '<' and '>' (which were escaped by
//			# removeHTMLtags()) should not be included in
//			# URLs, per RFC 2396.
//			# Make &nbsp; terminate a URL as well (bug T84937)
//			$m2 = [];
//			if (preg_match(
//				'/&(lt|gt|nbsp|#x0*(3[CcEe]|[Aa]0)|#0*(60|62|160));/',
//				$url,
//				$m2,
//				PREG_OFFSET_CAPTURE
//			)) {
//				$trail = substr($url, $m2[0][1]) . $trail;
//				$url = substr($url, 0, $m2[0][1]);
//			}
//
//			# Move trailing punctuation to $trail
//			$sep = ',;\.:!?';
//			# If there is no left bracket, then consider right brackets fair game too
//			if (strpos($url, '(') === false) {
//				$sep .= ')';
//			}
//
//			$urlRev = strrev($url);
//			$numSepChars = strspn($urlRev, $sep);
//			# Don't break a trailing HTML entity by moving the ; into $trail
//			# This is in hot code, so use substr_compare to avoid having to
//			# create a new String Object for the comparison
//			if ($numSepChars && substr_compare($url, ";", -$numSepChars, 1) === 0) {
//				# more optimization: instead of running preg_match with a $
//				# anchor, which can be slow, do the match on the reversed
//				# String starting at the desired offset.
//				# un-reversed regexp is: /&([a-z]+|#x[\da-f]+|#\d+)$/i
//				if (preg_match('/\G([a-z]+|[\da-f]+x#|\d+#)&/i', $urlRev, $m2, 0, $numSepChars)) {
//					$numSepChars--;
//				}
//			}
//			if ($numSepChars) {
//				$trail = substr($url, -$numSepChars) . $trail;
//				$url = substr($url, 0, -$numSepChars);
//			}
//
//			# Verify that we still have a real URL after trail removal, and
//			# not just lone protocol
//			if (strlen($trail) >= $numPostProto) {
//				return $url . $trail;
//			}
//
//			$url = Sanitizer::cleanUrl($url);
//
//			# Is this an external image?
//			$text = this.maybeMakeExternalImage($url);
//			if ($text === false) {
//				# Not an image, make a link
//				$text = Linker::makeExternalLink($url,
//					this.getConverterLanguage()->markNoConversion($url, true),
//					true, 'free',
//					this.getExternalLinkAttribs($url), this.mTitle);
//				# Register it in the output Object...
//				# Replace unnecessary URL escape codes with their equivalent characters
//				$pasteurized = self::normalizeLinkUrl($url);
//				this.mOutput->addExternalLink($pasteurized);
//			}
//			return $text . $trail;
//		}
//
//		/**
//		* Parse headers and return html
//		*
//		* @private
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function doHeadings($text) {
//			for ($i = 6; $i >= 1; --$i) {
//				$h = str_repeat('=', $i);
//				$text = preg_replace("/^$h(.+)$h\\s*$/m", "<h$i>\\1</h$i>", $text);
//			}
//			return $text;
//		}
//
//		/**
//		* Replace single quotes with HTML markup
//		* @private
//		*
//		* @param String $text
//		*
//		* @return String The altered text
//		*/
//		public function doAllQuotes($text) {
//			$outtext = '';
//			$lines = StringUtils::explode("\n", $text);
//			foreach ($lines as $line) {
//				$outtext .= this.doQuotes($line) . "\n";
//			}
//			$outtext = substr($outtext, 0, -1);
//			return $outtext;
//		}
//
//		/**
//		* Helper function for doAllQuotes()
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function doQuotes($text) {
//			$arr = preg_split("/(''+)/", $text, -1, PREG_SPLIT_DELIM_CAPTURE);
//			$countarr = count($arr);
//			if ($countarr == 1) {
//				return $text;
//			}
//
//			// First, do some preliminary work. This may shift some apostrophes from
//			// being mark-up to being text. It also counts the number of occurrences
//			// of bold and italics mark-ups.
//			$numbold = 0;
//			$numitalics = 0;
//			for ($i = 1; $i < $countarr; $i += 2) {
//				$thislen = strlen($arr[$i]);
//				// If there are ever four apostrophes, assume the first is supposed to
//				// be text, and the remaining three constitute mark-up for bold text.
//				// (T15227: ''''foo'''' turns into ' ''' foo ' ''')
//				if ($thislen == 4) {
//					$arr[$i - 1] .= "'";
//					$arr[$i] = "'''";
//					$thislen = 3;
//				} elseif ($thislen > 5) {
//					// If there are more than 5 apostrophes in a row, assume they're all
//					// text except for the last 5.
//					// (T15227: ''''''foo'''''' turns into ' ''''' foo ' ''''')
//					$arr[$i - 1] .= str_repeat("'", $thislen - 5);
//					$arr[$i] = "'''''";
//					$thislen = 5;
//				}
//				// Count the number of occurrences of bold and italics mark-ups.
//				if ($thislen == 2) {
//					$numitalics++;
//				} elseif ($thislen == 3) {
//					$numbold++;
//				} elseif ($thislen == 5) {
//					$numitalics++;
//					$numbold++;
//				}
//			}
//
//			// If there is an odd number of both bold and italics, it is likely
//			// that one of the bold ones was meant to be an apostrophe followed
//			// by italics. Which one we cannot know for certain, but it is more
//			// likely to be one that has a single-letter word before it.
//			if (($numbold % 2 == 1) && ($numitalics % 2 == 1)) {
//				$firstsingleletterword = -1;
//				$firstmultiletterword = -1;
//				$firstspace = -1;
//				for ($i = 1; $i < $countarr; $i += 2) {
//					if (strlen($arr[$i]) == 3) {
//						$x1 = substr($arr[$i - 1], -1);
//						$x2 = substr($arr[$i - 1], -2, 1);
//						if ($x1 === ' ') {
//							if ($firstspace == -1) {
//								$firstspace = $i;
//							}
//						} elseif ($x2 === ' ') {
//							$firstsingleletterword = $i;
//							// if $firstsingleletterword is set, we don't
//							// look at the other options, so we can bail early.
//							break;
//						} else {
//							if ($firstmultiletterword == -1) {
//								$firstmultiletterword = $i;
//							}
//						}
//					}
//				}
//
//				// If there is a single-letter word, use it!
//				if ($firstsingleletterword > -1) {
//					$arr[$firstsingleletterword] = "''";
//					$arr[$firstsingleletterword - 1] .= "'";
//				} elseif ($firstmultiletterword > -1) {
//					// If not, but there's a multi-letter word, use that one.
//					$arr[$firstmultiletterword] = "''";
//					$arr[$firstmultiletterword - 1] .= "'";
//				} elseif ($firstspace > -1) {
//					// ... otherwise use the first one that has neither.
//					// (notice that it is possible for all three to be -1 if, for example,
//					// there is only one pentuple-apostrophe in the line)
//					$arr[$firstspace] = "''";
//					$arr[$firstspace - 1] .= "'";
//				}
//			}
//
//			// Now let's actually convert our apostrophic mush to HTML!
//			$output = '';
//			$buffer = '';
//			$state = '';
//			$i = 0;
//			foreach ($arr as $r) {
//				if (($i % 2) == 0) {
//					if ($state === 'both') {
//						$buffer .= $r;
//					} else {
//						$output .= $r;
//					}
//				} else {
//					$thislen = strlen($r);
//					if ($thislen == 2) {
//						if ($state === 'i') {
//							$output .= '</i>';
//							$state = '';
//						} elseif ($state === 'bi') {
//							$output .= '</i>';
//							$state = 'b';
//						} elseif ($state === 'ib') {
//							$output .= '</b></i><b>';
//							$state = 'b';
//						} elseif ($state === 'both') {
//							$output .= '<b><i>' . $buffer . '</i>';
//							$state = 'b';
//						} else { // $state can be 'b' or ''
//							$output .= '<i>';
//							$state .= 'i';
//						}
//					} elseif ($thislen == 3) {
//						if ($state === 'b') {
//							$output .= '</b>';
//							$state = '';
//						} elseif ($state === 'bi') {
//							$output .= '</i></b><i>';
//							$state = 'i';
//						} elseif ($state === 'ib') {
//							$output .= '</b>';
//							$state = 'i';
//						} elseif ($state === 'both') {
//							$output .= '<i><b>' . $buffer . '</b>';
//							$state = 'i';
//						} else { // $state can be 'i' or ''
//							$output .= '<b>';
//							$state .= 'b';
//						}
//					} elseif ($thislen == 5) {
//						if ($state === 'b') {
//							$output .= '</b><i>';
//							$state = 'i';
//						} elseif ($state === 'i') {
//							$output .= '</i><b>';
//							$state = 'b';
//						} elseif ($state === 'bi') {
//							$output .= '</i></b>';
//							$state = '';
//						} elseif ($state === 'ib') {
//							$output .= '</b></i>';
//							$state = '';
//						} elseif ($state === 'both') {
//							$output .= '<i><b>' . $buffer . '</b></i>';
//							$state = '';
//						} else { // ($state == '')
//							$buffer = '';
//							$state = 'both';
//						}
//					}
//				}
//				$i++;
//			}
//			// Now close all remaining tags.  Notice that the order is important.
//			if ($state === 'b' || $state === 'ib') {
//				$output .= '</b>';
//			}
//			if ($state === 'i' || $state === 'bi' || $state === 'ib') {
//				$output .= '</i>';
//			}
//			if ($state === 'bi') {
//				$output .= '</b>';
//			}
//			// There might be lonely ''''', so make sure we have a buffer
//			if ($state === 'both' && $buffer) {
//				$output .= '<b><i>' . $buffer . '</i></b>';
//			}
//			return $output;
//		}
//
//		/**
//		* Replace external links (REL)
//		*
//		* Note: this is all very hackish and the order of execution matters a lot.
//		* Make sure to run tests/parser/parserTests.php if you change this code.
//		*
//		* @private
//		*
//		* @param String $text
//		*
//		* @throws MWException
//		* @return String
//		*/
//		public function replaceExternalLinks($text) {
//
//			$bits = preg_split(this.mExtLinkBracketedRegex, $text, -1, PREG_SPLIT_DELIM_CAPTURE);
//			if ($bits === false) {
//				throw new MWException("PCRE needs to be compiled with "
//					. "--enable-unicode-properties in order for MediaWiki to function");
//			}
//			$s = array_shift($bits);
//
//			$i = 0;
//			while ($i < count($bits)) {
//				$url = $bits[$i++];
//				$i++; // protocol
//				$text = $bits[$i++];
//				$trail = $bits[$i++];
//
//				# The characters '<' and '>' (which were escaped by
//				# removeHTMLtags()) should not be included in
//				# URLs, per RFC 2396.
//				$m2 = [];
//				if (preg_match('/&(lt|gt);/', $url, $m2, PREG_OFFSET_CAPTURE)) {
//					$text = substr($url, $m2[0][1]) . ' ' . $text;
//					$url = substr($url, 0, $m2[0][1]);
//				}
//
//				# If the link text is an image URL, replace it with an <img> tag
//				# This happened by accident in the original parser, but some people used it extensively
//				$img = this.maybeMakeExternalImage($text);
//				if ($img !== false) {
//					$text = $img;
//				}
//
//				$dtrail = '';
//
//				# Set linktype for CSS - if URL==text, link is essentially free
//				$linktype = ($text === $url) ? 'free' : 'text';
//
//				# No link text, e.g. [http://domain.tld/some.link]
//				if ($text == '') {
//					# Autonumber
//					$langObj = this.getTargetLanguage();
//					$text = '[' . $langObj->formatNum(++this.mAutonumber) . ']';
//					$linktype = 'autonumber';
//				} else {
//					# Have link text, e.g. [http://domain.tld/some.link text]s
//					# Check for trail
//					list($dtrail, $trail) = Linker::splitTrail($trail);
//				}
//
//				$text = this.getConverterLanguage()->markNoConversion($text);
//
//				$url = Sanitizer::cleanUrl($url);
//
//				# Use the encoded URL
//				# This means that users can paste URLs directly into the text
//				# Funny characters like � aren't valid in URLs anyway
//				# This was changed in August 2004
//				$s .= Linker::makeExternalLink($url, $text, false, $linktype,
//					this.getExternalLinkAttribs($url), this.mTitle) . $dtrail . $trail;
//
//				# Register link in the output Object.
//				# Replace unnecessary URL escape codes with the referenced character
//				# This prevents spammers from hiding links from the filters
//				$pasteurized = self::normalizeLinkUrl($url);
//				this.mOutput->addExternalLink($pasteurized);
//			}
//
//			return $s;
//		}
//
//		/**
//		* Get the rel attribute for a particular external link.
//		*
//		* @since 1.21
//		* @param String|boolean $url Optional URL, to extract the domain from for rel =>
//		*   nofollow if appropriate
//		* @param Title $title Optional Title, for wgNoFollowNsExceptions lookups
//		* @return String|null Rel attribute for $url
//		*/
//		public static function getExternalLinkRel($url = false, $title = null) {
//			global $wgNoFollowLinks, $wgNoFollowNsExceptions, $wgNoFollowDomainExceptions;
//			$ns = $title ? $title->getNamespace() : false;
//			if ($wgNoFollowLinks && !in_array($ns, $wgNoFollowNsExceptions)
//				&& !wfMatchesDomainList($url, $wgNoFollowDomainExceptions)
//			) {
//				return 'nofollow';
//			}
//			return null;
//		}
//
//		/**
//		* Get an associative array of additional HTML attributes appropriate for a
//		* particular external link.  This currently may include rel => nofollow
//		* (depending on configuration, namespace, and the URL's domain) and/or a
//		* target attribute (depending on configuration).
//		*
//		* @param String $url URL to extract the domain from for rel =>
//		*   nofollow if appropriate
//		* @return array Associative array of HTML attributes
//		*/
//		public function getExternalLinkAttribs($url) {
//			$attribs = [];
//			$rel = self::getExternalLinkRel($url, this.mTitle);
//
//			$target = this.mOptions->getExternalLinkTarget();
//			if ($target) {
//				$attribs['target'] = $target;
//				if (!in_array($target, [ '_self', '_parent', '_top' ])) {
//					// T133507. New windows can navigate parent cross-origin.
//					// Including noreferrer due to lacking browser
//					// support of noopener. Eventually noreferrer should be removed.
//					if ($rel !== '') {
//						$rel .= ' ';
//					}
//					$rel .= 'noreferrer noopener';
//				}
//			}
//			$attribs['rel'] = $rel;
//			return $attribs;
//		}
//
//		/**
//		* Replace unusual escape codes in a URL with their equivalent characters
//		*
//		* This generally follows the syntax defined in RFC 3986, with special
//		* consideration for HTTP query strings.
//		*
//		* @param String $url
//		* @return String
//		*/
//		public static function normalizeLinkUrl($url) {
//			# First, make sure unsafe characters are encoded
//			$url = preg_replace_callback('/[\x00-\x20"<>\[\\\\\]^`{|}\x7F-\xFF]/',
//				function ($m) {
//					return rawurlencode($m[0]);
//				},
//				$url
//			);
//
//			$ret = '';
//			$end = strlen($url);
//
//			# Fragment part - 'fragment'
//			$start = strpos($url, '#');
//			if ($start !== false && $start < $end) {
//				$ret = self::normalizeUrlComponent(
//					substr($url, $start, $end - $start), '"#%<>[\]^`{|}') . $ret;
//				$end = $start;
//			}
//
//			# Query part - 'query' minus &=+;
//			$start = strpos($url, '?');
//			if ($start !== false && $start < $end) {
//				$ret = self::normalizeUrlComponent(
//					substr($url, $start, $end - $start), '"#%<>[\]^`{|}&=+;') . $ret;
//				$end = $start;
//			}
//
//			# Scheme and path part - 'pchar'
//			# (we assume no userinfo or encoded colons in the host)
//			$ret = self::normalizeUrlComponent(
//				substr($url, 0, $end), '"#%<>[\]^`{|}/?') . $ret;
//
//			return $ret;
//		}
//
//		private static function normalizeUrlComponent($component, $unsafe) {
//			$callback = function ($matches) use ($unsafe) {
//				$char = urldecode($matches[0]);
//				$ord = ord($char);
//				if ($ord > 32 && $ord < 127 && strpos($unsafe, $char) === false) {
//					# Unescape it
//					return $char;
//				} else {
//					# Leave it escaped, but use uppercase for a-f
//					return strtoupper($matches[0]);
//				}
//			};
//			return preg_replace_callback('/%[0-9A-Fa-f]{2}/', $callback, $component);
//		}
//
//		/**
//		* make an image if it's allowed, either through the global
//		* option, through the exception, or through the on-wiki whitelist
//		*
//		* @param String $url
//		*
//		* @return String
//		*/
//		private function maybeMakeExternalImage($url) {
//			$imagesfrom = this.mOptions->getAllowExternalImagesFrom();
//			$imagesexception = !empty($imagesfrom);
//			$text = false;
//			# $imagesfrom could be either a single String or an array of strings, parse out the latter
//			if ($imagesexception && is_array($imagesfrom)) {
//				$imagematch = false;
//				foreach ($imagesfrom as $match) {
//					if (strpos($url, $match) === 0) {
//						$imagematch = true;
//						break;
//					}
//				}
//			} elseif ($imagesexception) {
//				$imagematch = (strpos($url, $imagesfrom) === 0);
//			} else {
//				$imagematch = false;
//			}
//
//			if (this.mOptions->getAllowExternalImages()
//				|| ($imagesexception && $imagematch)
//			) {
//				if (preg_match(self::EXT_IMAGE_REGEX, $url)) {
//					# Image found
//					$text = Linker::makeExternalImage($url);
//				}
//			}
//			if (!$text && this.mOptions->getEnableImageWhitelist()
//				&& preg_match(self::EXT_IMAGE_REGEX, $url)
//			) {
//				$whitelist = explode(
//					"\n",
//					wfMessage('external_image_whitelist')->inContentLanguage()->text()
//				);
//
//				foreach ($whitelist as $entry) {
//					# Sanitize the regex fragment, make it case-insensitive, ignore blank entries/comments
//					if (strpos($entry, '#') === 0 || $entry === '') {
//						continue;
//					}
//					if (preg_match('/' . str_replace('/', '\\/', $entry) . '/i', $url)) {
//						# Image matches a whitelist entry
//						$text = Linker::makeExternalImage($url);
//						break;
//					}
//				}
//			}
//			return $text;
//		}
//
//		/**
//		* Process [[ ]] wikilinks
//		*
//		* @param String $s
//		*
//		* @return String Processed text
//		*
//		* @private
//		*/
//		public function replaceInternalLinks($s) {
//			this.mLinkHolders->merge(this.replaceInternalLinks2($s));
//			return $s;
//		}
//
//		/**
//		* Process [[ ]] wikilinks (RIL)
//		* @param String $s
//		* @throws MWException
//		* @return LinkHolderArray
//		*
//		* @private
//		*/
//		public function replaceInternalLinks2(&$s) {
//			global $wgExtraInterlanguageLinkPrefixes;
//
//			static $tc = false, $e1, $e1_img;
//			# the % is needed to support urlencoded titles as well
//			if (!$tc) {
//				$tc = Title::legalChars() . '#%';
//				# Match a link having the form [[namespace:link|alternate]]trail
//				$e1 = "/^([{$tc}]+)(?:\\|(.+?))?]](.*)\$/sD";
//				# Match cases where there is no "]]", which might still be images
//				$e1_img = "/^([{$tc}]+)\\|(.*)\$/sD";
//			}
//
//			$holders = new LinkHolderArray($this);
//
//			# split the entire text String on occurrences of [[
//			$a = StringUtils::explode('[[', ' ' . $s);
//			# get the first element (all text up to first [[), and remove the space we added
//			$s = $a->current();
//			$a->next();
//			$line = $a->current(); # Workaround for broken ArrayIterator::next() that returns "void"
//			$s = substr($s, 1);
//
//			$useLinkPrefixExtension = this.getTargetLanguage()->linkPrefixExtension();
//			$e2 = null;
//			if ($useLinkPrefixExtension) {
//				# Match the end of a line for a word that's not followed by whitespace,
//				# e.g. in the case of 'The Arab al[[Razi]]', 'al' will be matched
//				global $wgContLang;
//				$charset = $wgContLang->linkPrefixCharset();
//				$e2 = "/^((?>.*[^$charset]|))(.+)$/sDu";
//			}
//
//			if (is_null(this.mTitle)) {
//				throw new MWException(__METHOD__ . ": \this.mTitle is null\n");
//			}
//			$nottalk = !this.mTitle->isTalkPage();
//
//			if ($useLinkPrefixExtension) {
//				$m = [];
//				if (preg_match($e2, $s, $m)) {
//					$first_prefix = $m[2];
//				} else {
//					$first_prefix = false;
//				}
//			} else {
//				$prefix = '';
//			}
//
//			$useSubpages = this.areSubpagesAllowed();
//
//			// @codingStandardsIgnoreStart Squiz.WhiteSpace.SemicolonSpacing.Incorrect
//			# Loop for each link
//			for (; $line !== false && $line !== null; $a->next(), $line = $a->current()) {
//				// @codingStandardsIgnoreEnd
//
//				# Check for excessive memory usage
//				if ($holders->isBig()) {
//					# Too big
//					# Do the existence check, replace the link holders and clear the array
//					$holders->replace($s);
//					$holders->clear();
//				}
//
//				if ($useLinkPrefixExtension) {
//					if (preg_match($e2, $s, $m)) {
//						$prefix = $m[2];
//						$s = $m[1];
//					} else {
//						$prefix = '';
//					}
//					# first link
//					if ($first_prefix) {
//						$prefix = $first_prefix;
//						$first_prefix = false;
//					}
//				}
//
//				$might_be_img = false;
//
//				if (preg_match($e1, $line, $m)) { # page with normal text or alt
//					$text = $m[2];
//					# If we get a ] at the beginning of $m[3] that means we have a link that's something like:
//					# [[Image:Foo.jpg|[http://example.com desc]]] <- having three ] in a row fucks up,
//					# the real problem is with the $e1 regex
//					# See T1500.
//					# Still some problems for cases where the ] is meant to be outside punctuation,
//					# and no image is in sight. See T4095.
//					if ($text !== ''
//						&& substr($m[3], 0, 1) === ']'
//						&& strpos($text, '[') !== false
//					) {
//						$text .= ']'; # so that replaceExternalLinks($text) works later
//						$m[3] = substr($m[3], 1);
//					}
//					# fix up urlencoded title texts
//					if (strpos($m[1], '%') !== false) {
//						# Should anchors '#' also be rejected?
//						$m[1] = str_replace([ '<', '>' ], [ '&lt;', '&gt;' ], rawurldecode($m[1]));
//					}
//					$trail = $m[3];
//				} elseif (preg_match($e1_img, $line, $m)) {
//					# Invalid, but might be an image with a link in its caption
//					$might_be_img = true;
//					$text = $m[2];
//					if (strpos($m[1], '%') !== false) {
//						$m[1] = str_replace([ '<', '>' ], [ '&lt;', '&gt;' ], rawurldecode($m[1]));
//					}
//					$trail = "";
//				} else { # Invalid form; output directly
//					$s .= $prefix . '[[' . $line;
//					continue;
//				}
//
//				$origLink = ltrim($m[1], ' ');
//
//				# Don't allow @gplx.Internal protected links to pages containing
//				# PROTO: where PROTO is a valid URL protocol; these
//				# should be external links.
//				if (preg_match('/^(?i:' . this.mUrlProtocols . ')/', $origLink)) {
//					$s .= $prefix . '[[' . $line;
//					continue;
//				}
//
//				# Make subpage if necessary
//				if ($useSubpages) {
//					$link = this.maybeDoSubpageLink($origLink, $text);
//				} else {
//					$link = $origLink;
//				}
//
//				$noforce = (substr($origLink, 0, 1) !== ':');
//				if (!$noforce) {
//					# Strip off leading ':'
//					$link = substr($link, 1);
//				}
//
//				$unstrip = this.mStripState->unstripNoWiki($link);
//				$nt = is_string($unstrip) ? Title::newFromText($unstrip) : null;
//				if ($nt === null) {
//					$s .= $prefix . '[[' . $line;
//					continue;
//				}
//
//				$ns = $nt->getNamespace();
//				$iw = $nt->getInterwiki();
//
//				if ($might_be_img) { # if this is actually an invalid link
//					if ($ns == NS_FILE && $noforce) { # but might be an image
//						$found = false;
//						while (true) {
//							# look at the next 'line' to see if we can close it there
//							$a->next();
//							$next_line = $a->current();
//							if ($next_line === false || $next_line === null) {
//								break;
//							}
//							$m = explode(']]', $next_line, 3);
//							if (count($m) == 3) {
//								# the first ]] closes the inner link, the second the image
//								$found = true;
//								$text .= "[[{$m[0]}]]{$m[1]}";
//								$trail = $m[2];
//								break;
//							} elseif (count($m) == 2) {
//								# if there's exactly one ]] that's fine, we'll keep looking
//								$text .= "[[{$m[0]}]]{$m[1]}";
//							} else {
//								# if $next_line is invalid too, we need look no further
//								$text .= '[[' . $next_line;
//								break;
//							}
//						}
//						if (!$found) {
//							# we couldn't find the end of this imageLink, so output it raw
//							# but don't ignore what might be perfectly normal links in the text we've examined
//							$holders->merge(this.replaceInternalLinks2($text));
//							$s .= "{$prefix}[[$link|$text";
//							# note: no $trail, because without an end, there *is* no trail
//							continue;
//						}
//					} else { # it's not an image, so output it raw
//						$s .= "{$prefix}[[$link|$text";
//						# note: no $trail, because without an end, there *is* no trail
//						continue;
//					}
//				}
//
//				$wasblank = ($text == '');
//				if ($wasblank) {
//					$text = $link;
//				} else {
//					# T6598 madness. Handle the quotes only if they come from the alternate part
//					# [[Lista d''e paise d''o munno]] -> <a href="...">Lista d''e paise d''o munno</a>
//					# [[Criticism of Harry Potter|Criticism of ''Harry Potter'']]
//					#    -> <a href="Criticism of Harry Potter">Criticism of <i>Harry Potter</i></a>
//					$text = this.doQuotes($text);
//				}
//
//				# Link not escaped by : , create the various objects
//				if ($noforce && !$nt->wasLocalInterwiki()) {
//					# Interwikis
//					if (
//						$iw && this.mOptions->getInterwikiMagic() && $nottalk && (
//							Language::fetchLanguageName($iw, null, 'mw') ||
//							in_array($iw, $wgExtraInterlanguageLinkPrefixes)
//						)
//					) {
//						# T26502: filter duplicates
//						if (!isset(this.mLangLinkLanguages[$iw])) {
//							this.mLangLinkLanguages[$iw] = true;
//							this.mOutput->addLanguageLink($nt->getFullText());
//						}
//
//						$s = rtrim($s . $prefix);
//						$s .= trim($trail, "\n") == '' ? '': $prefix . $trail;
//						continue;
//					}
//
//					if ($ns == NS_FILE) {
//						if (!wfIsBadImage($nt->getDBkey(), this.mTitle)) {
//							if ($wasblank) {
//								# if no parameters were passed, $text
//								# becomes something like "File:Foo.png",
//								# which we don't want to pass on to the
//								# image generator
//								$text = '';
//							} else {
//								# recursively parse links inside the image caption
//								# actually, this will parse them in any other parameters, too,
//								# but it might be hard to fix that, and it doesn't matter ATM
//								$text = this.replaceExternalLinks($text);
//								$holders->merge(this.replaceInternalLinks2($text));
//							}
//							# cloak any absolute URLs inside the image markup, so replaceExternalLinks() won't touch them
//							$s .= $prefix . this.armorLinks(
//								this.makeImage($nt, $text, $holders)) . $trail;
//							continue;
//						}
//					} elseif ($ns == NS_CATEGORY) {
//						$s = rtrim($s . "\n"); # T2087
//
//						if ($wasblank) {
//							$sortkey = this.getDefaultSort();
//						} else {
//							$sortkey = $text;
//						}
//						$sortkey = Sanitizer::decodeCharReferences($sortkey);
//						$sortkey = str_replace("\n", '', $sortkey);
//						$sortkey = this.getConverterLanguage()->convertCategoryKey($sortkey);
//						this.mOutput->addCategory($nt->getDBkey(), $sortkey);
//
//						/**
//						* Strip the whitespace Category links produce, see T2087
//						*/
//						$s .= trim($prefix . $trail, "\n") == '' ? '' : $prefix . $trail;
//
//						continue;
//					}
//				}
//
//				# Self-link checking. For some languages, variants of the title are checked in
//				# LinkHolderArray::doVariants() to allow batching the existence checks necessary
//				# for linking to a different variant.
//				if ($ns != NS_SPECIAL && $nt->equals(this.mTitle) && !$nt->hasFragment()) {
//					$s .= $prefix . Linker::makeSelfLinkObj($nt, $text, '', $trail);
//					continue;
//				}
//
//				# NS_MEDIA is a pseudo-namespace for linking directly to a file
//				# @todo FIXME: Should do batch file existence checks, see comment below
//				if ($ns == NS_MEDIA) {
//					# Give extensions a chance to select the file revision for us
//					$options = [];
//					$descQuery = false;
//					Hooks::run('BeforeParserFetchFileAndTitle',
//						[ $this, $nt, &$options, &$descQuery ]);
//					# Fetch and register the file (file title may be different via hooks)
//					list($file, $nt) = this.fetchFileAndTitle($nt, $options);
//					# Cloak with NOPARSE to avoid replacement in replaceExternalLinks
//					$s .= $prefix . this.armorLinks(
//						Linker::makeMediaLinkFile($nt, $file, $text)) . $trail;
//					continue;
//				}
//
//				# Some titles, such as valid special pages or files in foreign repos, should
//				# be shown as bluelinks even though they're not included in the page table
//				# @todo FIXME: isAlwaysKnown() can be expensive for file links; we should really do
//				# batch file existence checks for NS_FILE and NS_MEDIA
//				if ($iw == '' && $nt->isAlwaysKnown()) {
//					this.mOutput->addLink($nt);
//					$s .= this.makeKnownLinkHolder($nt, $text, $trail, $prefix);
//				} else {
//					# Links will be added to the output link list after checking
//					$s .= $holders->makeHolder($nt, $text, [], $trail, $prefix);
//				}
//			}
//			return $holders;
//		}
//
//		/**
//		* Render a forced-blue link inline; protect against double expansion of
//		* URLs if we're in a mode that prepends full URL prefixes to @gplx.Internal protected links.
//		* Since this little disaster has to split off the trail text to avoid
//		* breaking URLs in the following text without breaking trails on the
//		* wiki links, it's been made into a horrible function.
//		*
//		* @param Title $nt
//		* @param String $text
//		* @param String $trail
//		* @param String $prefix
//		* @return String HTML-wikitext mix oh yuck
//		*/
//		protected function makeKnownLinkHolder($nt, $text = '', $trail = '', $prefix = '') {
//			list($inside, $trail) = Linker::splitTrail($trail);
//
//			if ($text == '') {
//				$text = htmlspecialchars($nt->getPrefixedText());
//			}
//
//			$link = this.getLinkRenderer()->makeKnownLink(
//				$nt, new HtmlArmor("$prefix$text$inside")
//			);
//
//			return this.armorLinks($link) . $trail;
//		}
//
//		/**
//		* Insert a NOPARSE hacky thing into any inline links in a chunk that's
//		* going to go through further parsing steps before inline URL expansion.
//		*
//		* Not needed quite as much as it used to be since free links are a bit
//		* more sensible these days. But bracketed links are still an issue.
//		*
//		* @param String $text More-or-less HTML
//		* @return String Less-or-more HTML with NOPARSE bits
//		*/
//		public function armorLinks($text) {
//			return preg_replace('/\b((?i)' . this.mUrlProtocols . ')/',
//				self::MARKER_PREFIX . "NOPARSE$1", $text);
//		}
//
//		/**
//		* Return true if subpage links should be expanded on this page.
//		* @return boolean
//		*/
//		public function areSubpagesAllowed() {
//			# Some namespaces don't allow subpages
//			return MWNamespace::hasSubpages(this.mTitle->getNamespace());
//		}
//
//		/**
//		* Handle link to subpage if necessary
//		*
//		* @param String $target The source of the link
//		* @param String &$text The link text, modified as necessary
//		* @return String The full name of the link
//		* @private
//		*/
//		public function maybeDoSubpageLink($target, &$text) {
//			return Linker::normalizeSubpageLink(this.mTitle, $target, $text);
//		}
//
//		/**
//		* Make lists from lines starting with ':', '*', '#', etc. (DBL)
//		*
//		* @param String $text
//		* @param boolean $linestart Whether or not this is at the start of a line.
//		* @private
//		* @return String The lists rendered as HTML
//		*/
//		public function doBlockLevels($text, $linestart) {
//			return BlockLevelPass::doBlockLevels($text, $linestart);
//		}
//
//		/**
//		* Return value of a magic variable (like PAGENAME)
//		*
//		* @private
//		*
//		* @param int $index
//		* @param boolean|PPFrame $frame
//		*
//		* @throws MWException
//		* @return String
//		*/
//		public function getVariableValue($index, $frame = false) {
//			global $wgContLang, $wgSitename, $wgServer, $wgServerName;
//			global $wgArticlePath, $wgScriptPath, $wgStylePath;
//
//			if (is_null(this.mTitle)) {
//				// If no title set, bad things are going to happen
//				// later. Title should always be set since this
//				// should only be called in the middle of a parse
//				// operation (but the unit-tests do funky stuff)
//				throw new MWException(__METHOD__ . ' Should only be '
//					. ' called while parsing (no title set)');
//			}
//
//			/**
//			* Some of these require message or data lookups and can be
//			* expensive to check many times.
//			*/
//			if (Hooks::run('ParserGetVariableValueVarCache', [ &$this, &this.mVarCache ])) {
//				if (isset(this.mVarCache[$index])) {
//					return this.mVarCache[$index];
//				}
//			}
//
//			$ts = wfTimestamp(TS_UNIX, this.mOptions->getTimestamp());
//			Hooks::run('ParserGetVariableValueTs', [ &$this, &$ts ]);
//
//			$pageLang = this.getFunctionLang();
//
//			switch ($index) {
//				case '!':
//					$value = '|';
//					break;
//				case 'currentmonth':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('m'));
//					break;
//				case 'currentmonth1':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('n'));
//					break;
//				case 'currentmonthname':
//					$value = $pageLang->getMonthName(MWTimestamp::getInstance($ts)->format('n'));
//					break;
//				case 'currentmonthnamegen':
//					$value = $pageLang->getMonthNameGen(MWTimestamp::getInstance($ts)->format('n'));
//					break;
//				case 'currentmonthabbrev':
//					$value = $pageLang->getMonthAbbreviation(MWTimestamp::getInstance($ts)->format('n'));
//					break;
//				case 'currentday':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('j'));
//					break;
//				case 'currentday2':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('d'));
//					break;
//				case 'localmonth':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('m'));
//					break;
//				case 'localmonth1':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('n'));
//					break;
//				case 'localmonthname':
//					$value = $pageLang->getMonthName(MWTimestamp::getLocalInstance($ts)->format('n'));
//					break;
//				case 'localmonthnamegen':
//					$value = $pageLang->getMonthNameGen(MWTimestamp::getLocalInstance($ts)->format('n'));
//					break;
//				case 'localmonthabbrev':
//					$value = $pageLang->getMonthAbbreviation(MWTimestamp::getLocalInstance($ts)->format('n'));
//					break;
//				case 'localday':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('j'));
//					break;
//				case 'localday2':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('d'));
//					break;
//				case 'pagename':
//					$value = wfEscapeWikiText(this.mTitle->getText());
//					break;
//				case 'pagenamee':
//					$value = wfEscapeWikiText(this.mTitle->getPartialURL());
//					break;
//				case 'fullpagename':
//					$value = wfEscapeWikiText(this.mTitle->getPrefixedText());
//					break;
//				case 'fullpagenamee':
//					$value = wfEscapeWikiText(this.mTitle->getPrefixedURL());
//					break;
//				case 'subpagename':
//					$value = wfEscapeWikiText(this.mTitle->getSubpageText());
//					break;
//				case 'subpagenamee':
//					$value = wfEscapeWikiText(this.mTitle->getSubpageUrlForm());
//					break;
//				case 'rootpagename':
//					$value = wfEscapeWikiText(this.mTitle->getRootText());
//					break;
//				case 'rootpagenamee':
//					$value = wfEscapeWikiText(wfUrlencode(str_replace(
//						' ',
//						'_',
//						this.mTitle->getRootText()
//					)));
//					break;
//				case 'basepagename':
//					$value = wfEscapeWikiText(this.mTitle->getBaseText());
//					break;
//				case 'basepagenamee':
//					$value = wfEscapeWikiText(wfUrlencode(str_replace(
//						' ',
//						'_',
//						this.mTitle->getBaseText()
//					)));
//					break;
//				case 'talkpagename':
//					if (this.mTitle->canTalk()) {
//						$talkPage = this.mTitle->getTalkPage();
//						$value = wfEscapeWikiText($talkPage->getPrefixedText());
//					} else {
//						$value = '';
//					}
//					break;
//				case 'talkpagenamee':
//					if (this.mTitle->canTalk()) {
//						$talkPage = this.mTitle->getTalkPage();
//						$value = wfEscapeWikiText($talkPage->getPrefixedURL());
//					} else {
//						$value = '';
//					}
//					break;
//				case 'subjectpagename':
//					$subjPage = this.mTitle->getSubjectPage();
//					$value = wfEscapeWikiText($subjPage->getPrefixedText());
//					break;
//				case 'subjectpagenamee':
//					$subjPage = this.mTitle->getSubjectPage();
//					$value = wfEscapeWikiText($subjPage->getPrefixedURL());
//					break;
//				case 'pageid': // requested in T25427
//					$pageid = this.getTitle()->getArticleID();
//					if ($pageid == 0) {
//						# 0 means the page doesn't exist in the database,
//						# which means the user is previewing a new page.
//						# The vary-revision flag must be set, because the magic word
//						# will have a different value once the page is saved.
//						this.mOutput->setFlag('vary-revision');
//						wfDebug(__METHOD__ . ": {{PAGEID}} used in a new page, setting vary-revision...\n");
//					}
//					$value = $pageid ? $pageid : null;
//					break;
//				case 'revisionid':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned.
//					this.mOutput->setFlag('vary-revision-id');
//					wfDebug(__METHOD__ . ": {{REVISIONID}} used, setting vary-revision-id...\n");
//					$value = this.mRevisionId;
//					if (!$value && this.mOptions->getSpeculativeRevIdCallback()) {
//						$value = call_user_func(this.mOptions->getSpeculativeRevIdCallback());
//						this.mOutput->setSpeculativeRevIdUsed($value);
//					}
//					break;
//				case 'revisionday':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONDAY}} used, setting vary-revision...\n");
//					$value = intval(substr(this.getRevisionTimestamp(), 6, 2));
//					break;
//				case 'revisionday2':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONDAY2}} used, setting vary-revision...\n");
//					$value = substr(this.getRevisionTimestamp(), 6, 2);
//					break;
//				case 'revisionmonth':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONMONTH}} used, setting vary-revision...\n");
//					$value = substr(this.getRevisionTimestamp(), 4, 2);
//					break;
//				case 'revisionmonth1':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONMONTH1}} used, setting vary-revision...\n");
//					$value = intval(substr(this.getRevisionTimestamp(), 4, 2));
//					break;
//				case 'revisionyear':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONYEAR}} used, setting vary-revision...\n");
//					$value = substr(this.getRevisionTimestamp(), 0, 4);
//					break;
//				case 'revisiontimestamp':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned. This is for null edits.
//					this.mOutput->setFlag('vary-revision');
//					wfDebug(__METHOD__ . ": {{REVISIONTIMESTAMP}} used, setting vary-revision...\n");
//					$value = this.getRevisionTimestamp();
//					break;
//				case 'revisionuser':
//					# Let the edit saving system know we should parse the page
//					# *after* a revision ID has been assigned for null edits.
//					this.mOutput->setFlag('vary-user');
//					wfDebug(__METHOD__ . ": {{REVISIONUSER}} used, setting vary-user...\n");
//					$value = this.getRevisionUser();
//					break;
//				case 'revisionsize':
//					$value = this.getRevisionSize();
//					break;
//				case 'namespace':
//					$value = str_replace('_', ' ', $wgContLang->getNsText(this.mTitle->getNamespace()));
//					break;
//				case 'namespacee':
//					$value = wfUrlencode($wgContLang->getNsText(this.mTitle->getNamespace()));
//					break;
//				case 'namespacenumber':
//					$value = this.mTitle->getNamespace();
//					break;
//				case 'talkspace':
//					$value = this.mTitle->canTalk()
//						? str_replace('_', ' ', this.mTitle->getTalkNsText())
//						: '';
//					break;
//				case 'talkspacee':
//					$value = this.mTitle->canTalk() ? wfUrlencode(this.mTitle->getTalkNsText()) : '';
//					break;
//				case 'subjectspace':
//					$value = str_replace('_', ' ', this.mTitle->getSubjectNsText());
//					break;
//				case 'subjectspacee':
//					$value = (wfUrlencode(this.mTitle->getSubjectNsText()));
//					break;
//				case 'currentdayname':
//					$value = $pageLang->getWeekdayName((int)MWTimestamp::getInstance($ts)->format('w') + 1);
//					break;
//				case 'currentyear':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('Y'), true);
//					break;
//				case 'currenttime':
//					$value = $pageLang->time(wfTimestamp(TS_MW, $ts), false, false);
//					break;
//				case 'currenthour':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('H'), true);
//					break;
//				case 'currentweek':
//					# @bug T6594 PHP5 has it zero padded, PHP4 does not, cast to
//					# int to remove the padding
//					$value = $pageLang->formatNum((int)MWTimestamp::getInstance($ts)->format('W'));
//					break;
//				case 'currentdow':
//					$value = $pageLang->formatNum(MWTimestamp::getInstance($ts)->format('w'));
//					break;
//				case 'localdayname':
//					$value = $pageLang->getWeekdayName(
//						(int)MWTimestamp::getLocalInstance($ts)->format('w') + 1
//					);
//					break;
//				case 'localyear':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('Y'), true);
//					break;
//				case 'localtime':
//					$value = $pageLang->time(
//						MWTimestamp::getLocalInstance($ts)->format('YmdHis'),
//						false,
//						false
//					);
//					break;
//				case 'localhour':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('H'), true);
//					break;
//				case 'localweek':
//					# @bug T6594 PHP5 has it zero padded, PHP4 does not, cast to
//					# int to remove the padding
//					$value = $pageLang->formatNum((int)MWTimestamp::getLocalInstance($ts)->format('W'));
//					break;
//				case 'localdow':
//					$value = $pageLang->formatNum(MWTimestamp::getLocalInstance($ts)->format('w'));
//					break;
//				case 'numberofarticles':
//					$value = $pageLang->formatNum(SiteStats::articles());
//					break;
//				case 'numberoffiles':
//					$value = $pageLang->formatNum(SiteStats::images());
//					break;
//				case 'numberofusers':
//					$value = $pageLang->formatNum(SiteStats::users());
//					break;
//				case 'numberofactiveusers':
//					$value = $pageLang->formatNum(SiteStats::activeUsers());
//					break;
//				case 'numberofpages':
//					$value = $pageLang->formatNum(SiteStats::pages());
//					break;
//				case 'numberofadmins':
//					$value = $pageLang->formatNum(SiteStats::numberingroup('sysop'));
//					break;
//				case 'numberofedits':
//					$value = $pageLang->formatNum(SiteStats::edits());
//					break;
//				case 'currenttimestamp':
//					$value = wfTimestamp(TS_MW, $ts);
//					break;
//				case 'localtimestamp':
//					$value = MWTimestamp::getLocalInstance($ts)->format('YmdHis');
//					break;
//				case 'currentversion':
//					$value = SpecialVersion::getVersion();
//					break;
//				case 'articlepath':
//					return $wgArticlePath;
//				case 'sitename':
//					return $wgSitename;
//				case 'server':
//					return $wgServer;
//				case 'servername':
//					return $wgServerName;
//				case 'scriptpath':
//					return $wgScriptPath;
//				case 'stylepath':
//					return $wgStylePath;
//				case 'directionmark':
//					return $pageLang->getDirMark();
//				case 'contentlanguage':
//					global $wgLanguageCode;
//					return $wgLanguageCode;
//				case 'pagelanguage':
//					$value = $pageLang->getCode();
//					break;
//				case 'cascadingsources':
//					$value = CoreParserFunctions::cascadingsources($this);
//					break;
//				default:
//					$ret = null;
//					Hooks::run(
//						'ParserGetVariableValueSwitch',
//						[ &$this, &this.mVarCache, &$index, &$ret, &$frame ]
//					);
//
//					return $ret;
//			}
//
//			if ($index) {
//				this.mVarCache[$index] = $value;
//			}
//
//			return $value;
//		}
//
//		/**
//		* initialise the magic variables (like CURRENTMONTHNAME) and substitution modifiers
//		*
//		* @private
//		*/
//		public function initialiseVariables() {
//			$variableIDs = MagicWord::getVariableIDs();
//			$substIDs = MagicWord::getSubstIDs();
//
//			this.mVariables = new MagicWordArray($variableIDs);
//			this.mSubstWords = new MagicWordArray($substIDs);
//		}
//
//		/**
//		* Preprocess some wikitext and return the document tree.
//		* This is the ghost of replace_variables().
//		*
//		* @param String $text The text to parse
//		* @param int $flags Bitwise combination of:
//		*   - self::PTD_FOR_INCLUSION: Handle "<noinclude>" and "<includeonly>" as if the text is being
//		*     included. Default is to assume a direct page view.
//		*
//		* The generated DOM tree must depend only on the input text and the flags.
//		* The DOM tree must be the same in OT_HTML and OT_WIKI mode, to avoid a regression of T6899.
//		*
//		* Any flag added to the $flags parameter here, or any other parameter liable to cause a
//		* change in the DOM tree for a given text, must be passed through the section identifier
//		* in the section edit link and thus back to extractSections().
//		*
//		* The output of this function is currently only cached in process memory, but a persistent
//		* cache may be implemented at a later date which takes further advantage of these strict
//		* dependency requirements.
//		*
//		* @return PPNode
//		*/
//		public function preprocessToDom($text, $flags = 0) {
//			$dom = this.getPreprocessor()->preprocessToObj($text, $flags);
//			return $dom;
//		}
//
//		/**
//		* Return a three-element array: leading whitespace, String contents, trailing whitespace
//		*
//		* @param String $s
//		*
//		* @return array
//		*/
//		public static function splitWhitespace($s) {
//			$ltrimmed = ltrim($s);
//			$w1 = substr($s, 0, strlen($s) - strlen($ltrimmed));
//			$trimmed = rtrim($ltrimmed);
//			$diff = strlen($ltrimmed) - strlen($trimmed);
//			if ($diff > 0) {
//				$w2 = substr($ltrimmed, -$diff);
//			} else {
//				$w2 = '';
//			}
//			return [ $w1, $trimmed, $w2 ];
//		}
//
//		/**
//		* Replace magic variables, templates, and template arguments
//		* with the appropriate text. Templates are substituted recursively,
//		* taking care to avoid infinite loops.
//		*
//		* Note that the substitution depends on value of $mOutputType:
//		*  self::OT_WIKI: only {{subst:}} templates
//		*  self::OT_PREPROCESS: templates but not extension tags
//		*  self::OT_HTML: all templates and extension tags
//		*
//		* @param String $text The text to transform
//		* @param boolean|PPFrame $frame Object describing the arguments passed to the
//		*   template. Arguments may also be provided as an associative array, as
//		*   was the usual case before MW1.12. Providing arguments this way may be
//		*   useful for extensions wishing to perform variable replacement
//		*   explicitly.
//		* @param boolean $argsOnly Only do argument (triple-brace) expansion, not
//		*   double-brace expansion.
//		* @return String
//		*/
//		public function replaceVariables($text, $frame = false, $argsOnly = false) {
//			# Is there any text? Also, Prevent too big inclusions!
//			$textSize = strlen($text);
//			if ($textSize < 1 || $textSize > this.mOptions->getMaxIncludeSize()) {
//				return $text;
//			}
//
//			if ($frame === false) {
//				$frame = this.getPreprocessor()->newFrame();
//			} elseif (!($frame instanceof PPFrame)) {
//				wfDebug(__METHOD__ . " called using plain parameters instead of "
//					. "a PPFrame instance. Creating custom frame.\n");
//				$frame = this.getPreprocessor()->newCustomFrame($frame);
//			}
//
//			$dom = this.preprocessToDom($text);
//			$flags = $argsOnly ? PPFrame::NO_TEMPLATES : 0;
//			$text = $frame->expand($dom, $flags);
//
//			return $text;
//		}
//
//		/**
//		* Clean up argument array - refactored in 1.9 so parserfunctions can use it, too.
//		*
//		* @param array $args
//		*
//		* @return array
//		*/
//		public static function createAssocArgs($args) {
//			$assocArgs = [];
//			$index = 1;
//			foreach ($args as $arg) {
//				$eqpos = strpos($arg, '=');
//				if ($eqpos === false) {
//					$assocArgs[$index++] = $arg;
//				} else {
//					$name = trim(substr($arg, 0, $eqpos));
//					$value = trim(substr($arg, $eqpos + 1));
//					if ($value === false) {
//						$value = '';
//					}
//					if ($name !== false) {
//						$assocArgs[$name] = $value;
//					}
//				}
//			}
//
//			return $assocArgs;
//		}
//
//		/**
//		* Warn the user when a parser limitation is reached
//		* Will warn at most once the user per limitation type
//		*
//		* The results are shown during preview and run through the Parser (See EditPage.php)
//		*
//		* @param String $limitationType Should be one of:
//		*   'expensive-parserfunction' (corresponding messages:
//		*       'expensive-parserfunction-warning',
//		*       'expensive-parserfunction-category')
//		*   'post-expand-template-argument' (corresponding messages:
//		*       'post-expand-template-argument-warning',
//		*       'post-expand-template-argument-category')
//		*   'post-expand-template-inclusion' (corresponding messages:
//		*       'post-expand-template-inclusion-warning',
//		*       'post-expand-template-inclusion-category')
//		*   'node-count-exceeded' (corresponding messages:
//		*       'node-count-exceeded-warning',
//		*       'node-count-exceeded-category')
//		*   'expansion-depth-exceeded' (corresponding messages:
//		*       'expansion-depth-exceeded-warning',
//		*       'expansion-depth-exceeded-category')
//		* @param String|int|null $current Current value
//		* @param String|int|null $max Maximum allowed, when an explicit limit has been
//		*	 exceeded, provide the values (optional)
//		*/
//		public function limitationWarn($limitationType, $current = '', $max = '') {
//			# does no harm if $current and $max are present but are unnecessary for the message
//			# Not doing ->inLanguage(this.mOptions->getUserLangObj()), since this is shown
//			# only during preview, and that would split the parser cache unnecessarily.
//			$warning = wfMessage("$limitationType-warning")->numParams($current, $max)
//				->text();
//			this.mOutput->addWarning($warning);
//			this.addTrackingCategory("$limitationType-category");
//		}
//
//		/**
//		* Return the text of a template, after recursively
//		* replacing any variables or templates within the template.
//		*
//		* @param array $piece The parts of the template
//		*   $piece['title']: the title, i.e. the part before the |
//		*   $piece['parts']: the parameter array
//		*   $piece['lineStart']: whether the brace was at the start of a line
//		* @param PPFrame $frame The current frame, contains template arguments
//		* @throws Exception
//		* @return String The text of the template
//		*/
//		public function braceSubstitution($piece, $frame) {
//
//			// Flags
//
//			// $text has been filled
//			$found = false;
//			// wiki markup in $text should be escaped
//			$nowiki = false;
//			// $text is HTML, armour it against wikitext transformation
//			$isHTML = false;
//			// Force interwiki transclusion to be done in raw mode not rendered
//			$forceRawInterwiki = false;
//			// $text is a DOM node needing expansion in a child frame
//			$isChildObj = false;
//			// $text is a DOM node needing expansion in the current frame
//			$isLocalObj = false;
//
//			# Title Object, where $text came from
//			$title = false;
//
//			# $part1 is the bit before the first |, and must contain only title characters.
//			# Various prefixes will be stripped from it later.
//			$titleWithSpaces = $frame->expand($piece['title']);
//			$part1 = trim($titleWithSpaces);
//			$titleText = false;
//
//			# Original title text preserved for various purposes
//			$originalTitle = $part1;
//
//			# $args is a list of argument nodes, starting from index 0, not including $part1
//			# @todo FIXME: If piece['parts'] is null then the call to getLength()
//			# below won't work b/c this $args isn't an Object
//			$args = (null == $piece['parts']) ? [] : $piece['parts'];
//
//			$profileSection = null; // profile templates
//
//			# SUBST
//			if (!$found) {
//				$substMatch = this.mSubstWords->matchStartAndRemove($part1);
//
//				# Possibilities for substMatch: "subst", "safesubst" or FALSE
//				# Decide whether to expand template or keep wikitext as-is.
//				if (this.ot['wiki']) {
//					if ($substMatch === false) {
//						$literal = true;  # literal when in PST with no prefix
//					} else {
//						$literal = false; # expand when in PST with subst: or safesubst:
//					}
//				} else {
//					if ($substMatch == 'subst') {
//						$literal = true;  # literal when not in PST with plain subst:
//					} else {
//						$literal = false; # expand when not in PST with safesubst: or no prefix
//					}
//				}
//				if ($literal) {
//					$text = $frame->virtualBracketedImplode('{{', '|', '}}', $titleWithSpaces, $args);
//					$isLocalObj = true;
//					$found = true;
//				}
//			}
//
//			# Variables
//			if (!$found && $args->getLength() == 0) {
//				$id = this.mVariables->matchStartToEnd($part1);
//				if ($id !== false) {
//					$text = this.getVariableValue($id, $frame);
//					if (MagicWord::getCacheTTL($id) > -1) {
//						this.mOutput->updateCacheExpiry(MagicWord::getCacheTTL($id));
//					}
//					$found = true;
//				}
//			}
//
//			# MSG, MSGNW and RAW
//			if (!$found) {
//				# Check for MSGNW:
//				$mwMsgnw = MagicWord::get('msgnw');
//				if ($mwMsgnw->matchStartAndRemove($part1)) {
//					$nowiki = true;
//				} else {
//					# Remove obsolete MSG:
//					$mwMsg = MagicWord::get('msg');
//					$mwMsg->matchStartAndRemove($part1);
//				}
//
//				# Check for RAW:
//				$mwRaw = MagicWord::get('raw');
//				if ($mwRaw->matchStartAndRemove($part1)) {
//					$forceRawInterwiki = true;
//				}
//			}
//
//			# Parser functions
//			if (!$found) {
//				$colonPos = strpos($part1, ':');
//				if ($colonPos !== false) {
//					$func = substr($part1, 0, $colonPos);
//					$funcArgs = [ trim(substr($part1, $colonPos + 1)) ];
//					$argsLength = $args->getLength();
//					for ($i = 0; $i < $argsLength; $i++) {
//						$funcArgs[] = $args->item($i);
//					}
//					try {
//						$result = this.callParserFunction($frame, $func, $funcArgs);
//					} catch (Exception $ex) {
//						throw $ex;
//					}
//
//					# The interface for parser functions allows for extracting
//					# flags into the local scope. Extract any forwarded flags
//					# here.
//					extract($result);
//				}
//			}
//
//			# Finish mangling title and then check for loops.
//			# Set $title to a Title Object and $titleText to the PDBK
//			if (!$found) {
//				$ns = NS_TEMPLATE;
//				# Split the title into page and subpage
//				$subpage = '';
//				$relative = this.maybeDoSubpageLink($part1, $subpage);
//				if ($part1 !== $relative) {
//					$part1 = $relative;
//					$ns = this.mTitle->getNamespace();
//				}
//				$title = Title::newFromText($part1, $ns);
//				if ($title) {
//					$titleText = $title->getPrefixedText();
//					# Check for language variants if the template is not found
//					if (this.getConverterLanguage()->hasVariants() && $title->getArticleID() == 0) {
//						this.getConverterLanguage()->findVariantLink($part1, $title, true);
//					}
//					# Do recursion depth check
//					$limit = this.mOptions->getMaxTemplateDepth();
//					if ($frame->depth >= $limit) {
//						$found = true;
//						$text = '<span class="error">'
//							. wfMessage('parser-template-recursion-depth-warning')
//								->numParams($limit)->inContentLanguage()->text()
//							. '</span>';
//					}
//				}
//			}
//
//			# Load from database
//			if (!$found && $title) {
//				$profileSection = this.mProfiler->scopedProfileIn($title->getPrefixedDBkey());
//				if (!$title->isExternal()) {
//					if ($title->isSpecialPage()
//						&& this.mOptions->getAllowSpecialInclusion()
//						&& this.ot['html']
//					) {
//						$specialPage = SpecialPageFactory::getPage($title->getDBkey());
//						// Pass the template arguments as URL parameters.
//						// "uselang" will have no effect since the Language Object
//						// is forced to the one defined in ParserOptions.
//						$pageArgs = [];
//						$argsLength = $args->getLength();
//						for ($i = 0; $i < $argsLength; $i++) {
//							$bits = $args->item($i)->splitArg();
//							if (strval($bits['index']) === '') {
//								$name = trim($frame->expand($bits['name'], PPFrame::STRIP_COMMENTS));
//								$value = trim($frame->expand($bits['value']));
//								$pageArgs[$name] = $value;
//							}
//						}
//
//						// Create a new context to execute the special page
//						$context = new RequestContext;
//						$context->setTitle($title);
//						$context->setRequest(new FauxRequest($pageArgs));
//						if ($specialPage && $specialPage->maxIncludeCacheTime() === 0) {
//							$context->setUser(this.getUser());
//						} else {
//							// If this page is cached, then we better not be per user.
//							$context->setUser(User::newFromName('127.0.0.1', false));
//						}
//						$context->setLanguage(this.mOptions->getUserLangObj());
//						$ret = SpecialPageFactory::capturePath(
//							$title, $context, this.getLinkRenderer());
//						if ($ret) {
//							$text = $context->getOutput()->getHTML();
//							this.mOutput->addOutputPageMetadata($context->getOutput());
//							$found = true;
//							$isHTML = true;
//							if ($specialPage && $specialPage->maxIncludeCacheTime() !== false) {
//								this.mOutput->updateRuntimeAdaptiveExpiry(
//									$specialPage->maxIncludeCacheTime()
//								);
//							}
//						}
//					} elseif (MWNamespace::isNonincludable($title->getNamespace())) {
//						$found = false; # access denied
//						wfDebug(__METHOD__ . ": template inclusion denied for " .
//							$title->getPrefixedDBkey() . "\n");
//					} else {
//						list($text, $title) = this.getTemplateDom($title);
//						if ($text !== false) {
//							$found = true;
//							$isChildObj = true;
//						}
//					}
//
//					# If the title is valid but undisplayable, make a link to it
//					if (!$found && (this.ot['html'] || this.ot['pre'])) {
//						$text = "[[:$titleText]]";
//						$found = true;
//					}
//				} elseif ($title->isTrans()) {
//					# Interwiki transclusion
//					if (this.ot['html'] && !$forceRawInterwiki) {
//						$text = this.interwikiTransclude($title, 'render');
//						$isHTML = true;
//					} else {
//						$text = this.interwikiTransclude($title, 'raw');
//						# Preprocess it like a template
//						$text = this.preprocessToDom($text, self::PTD_FOR_INCLUSION);
//						$isChildObj = true;
//					}
//					$found = true;
//				}
//
//				# Do infinite loop check
//				# This has to be done after redirect resolution to avoid infinite loops via redirects
//				if (!$frame->loopCheck($title)) {
//					$found = true;
//					$text = '<span class="error">'
//						. wfMessage('parser-template-loop-warning', $titleText)->inContentLanguage()->text()
//						. '</span>';
//					wfDebug(__METHOD__ . ": template loop broken at '$titleText'\n");
//				}
//			}
//
//			# If we haven't found text to substitute by now, we're done
//			# Recover the source wikitext and return it
//			if (!$found) {
//				$text = $frame->virtualBracketedImplode('{{', '|', '}}', $titleWithSpaces, $args);
//				if ($profileSection) {
//					this.mProfiler->scopedProfileOut($profileSection);
//				}
//				return [ 'Object' => $text ];
//			}
//
//			# Expand DOM-style return values in a child frame
//			if ($isChildObj) {
//				# Clean up argument array
//				$newFrame = $frame->newChild($args, $title);
//
//				if ($nowiki) {
//					$text = $newFrame->expand($text, PPFrame::RECOVER_ORIG);
//				} elseif ($titleText !== false && $newFrame->isEmpty()) {
//					# Expansion is eligible for the empty-frame cache
//					$text = $newFrame->cachedExpand($titleText, $text);
//				} else {
//					# Uncached expansion
//					$text = $newFrame->expand($text);
//				}
//			}
//			if ($isLocalObj && $nowiki) {
//				$text = $frame->expand($text, PPFrame::RECOVER_ORIG);
//				$isLocalObj = false;
//			}
//
//			if ($profileSection) {
//				this.mProfiler->scopedProfileOut($profileSection);
//			}
//
//			# Replace raw HTML by a placeholder
//			if ($isHTML) {
//				$text = this.insertStripItem($text);
//			} elseif ($nowiki && (this.ot['html'] || this.ot['pre'])) {
//				# Escape nowiki-style return values
//				$text = wfEscapeWikiText($text);
//			} elseif (is_string($text)
//				&& !$piece['lineStart']
//				&& preg_match('/^(?:{\\||:|;|#|\*)/', $text)
//			) {
//				# T2529: if the template begins with a table or block-level
//				# element, it should be treated as beginning a new line.
//				# This behavior is somewhat controversial.
//				$text = "\n" . $text;
//			}
//
//			if (is_string($text) && !this.incrementIncludeSize('post-expand', strlen($text))) {
//				# Error, oversize inclusion
//				if ($titleText !== false) {
//					# Make a working, properly escaped link if possible (T25588)
//					$text = "[[:$titleText]]";
//				} else {
//					# This will probably not be a working link, but at least it may
//					# provide some hint of where the problem is
//					preg_replace('/^:/', '', $originalTitle);
//					$text = "[[:$originalTitle]]";
//				}
//				$text .= this.insertStripItem('<!-- WARNING: template omitted, '
//					. 'post-expand include size too large -->');
//				this.limitationWarn('post-expand-template-inclusion');
//			}
//
//			if ($isLocalObj) {
//				$ret = [ 'Object' => $text ];
//			} else {
//				$ret = [ 'text' => $text ];
//			}
//
//			return $ret;
//		}
//
//		/**
//		* Call a parser function and return an array with text and flags.
//		*
//		* The returned array will always contain a boolean 'found', indicating
//		* whether the parser function was found or not. It may also contain the
//		* following:
//		*  text: String|Object, resulting wikitext or PP DOM Object
//		*  isHTML: boolean, $text is HTML, armour it against wikitext transformation
//		*  isChildObj: boolean, $text is a DOM node needing expansion in a child frame
//		*  isLocalObj: boolean, $text is a DOM node needing expansion in the current frame
//		*  nowiki: boolean, wiki markup in $text should be escaped
//		*
//		* @since 1.21
//		* @param PPFrame $frame The current frame, contains template arguments
//		* @param String $function Function name
//		* @param array $args Arguments to the function
//		* @throws MWException
//		* @return array
//		*/
//		public function callParserFunction($frame, $function, array $args = []) {
//			global $wgContLang;
//
//			# Case sensitive functions
//			if (isset(this.mFunctionSynonyms[1][$function])) {
//				$function = this.mFunctionSynonyms[1][$function];
//			} else {
//				# Case insensitive functions
//				$function = $wgContLang->lc($function);
//				if (isset(this.mFunctionSynonyms[0][$function])) {
//					$function = this.mFunctionSynonyms[0][$function];
//				} else {
//					return [ 'found' => false ];
//				}
//			}
//
//			list($callback, $flags) = this.mFunctionHooks[$function];
//
//			# Workaround for PHP bug 35229 and similar
//			if (!is_callable($callback)) {
//				throw new MWException("Tag hook for $function is not callable\n");
//			}
//
//			$allArgs = [ &$this ];
//			if ($flags & self::SFH_OBJECT_ARGS) {
//				# Convert arguments to PPNodes and collect for appending to $allArgs
//				$funcArgs = [];
//				foreach ($args as $k => $v) {
//					if ($v instanceof PPNode || $k === 0) {
//						$funcArgs[] = $v;
//					} else {
//						$funcArgs[] = this.mPreprocessor->newPartNodeArray([ $k => $v ])->item(0);
//					}
//				}
//
//				# Add a frame parameter, and pass the arguments as an array
//				$allArgs[] = $frame;
//				$allArgs[] = $funcArgs;
//			} else {
//				# Convert arguments to plain text and append to $allArgs
//				foreach ($args as $k => $v) {
//					if ($v instanceof PPNode) {
//						$allArgs[] = trim($frame->expand($v));
//					} elseif (is_int($k) && $k >= 0) {
//						$allArgs[] = trim($v);
//					} else {
//						$allArgs[] = trim("$k=$v");
//					}
//				}
//			}
//
//			$result = call_user_func_array($callback, $allArgs);
//
//			# The interface for function hooks allows them to return a wikitext
//			# String or an array containing the String and any flags. This mungs
//			# things around to match what this method should return.
//			if (!is_array($result)) {
//				$result =[
//					'found' => true,
//					'text' => $result,
//				];
//			} else {
//				if (isset($result[0]) && !isset($result['text'])) {
//					$result['text'] = $result[0];
//				}
//				unset($result[0]);
//				$result += [
//					'found' => true,
//				];
//			}
//
//			$noparse = true;
//			$preprocessFlags = 0;
//			if (isset($result['noparse'])) {
//				$noparse = $result['noparse'];
//			}
//			if (isset($result['preprocessFlags'])) {
//				$preprocessFlags = $result['preprocessFlags'];
//			}
//
//			if (!$noparse) {
//				$result['text'] = this.preprocessToDom($result['text'], $preprocessFlags);
//				$result['isChildObj'] = true;
//			}
//
//			return $result;
//		}
//
//		/**
//		* Get the semi-parsed DOM representation of a template with a given title,
//		* and its redirect destination title. Cached.
//		*
//		* @param Title $title
//		*
//		* @return array
//		*/
//		public function getTemplateDom($title) {
//			$cacheTitle = $title;
//			$titleText = $title->getPrefixedDBkey();
//
//			if (isset(this.mTplRedirCache[$titleText])) {
//				list($ns, $dbk) = this.mTplRedirCache[$titleText];
//				$title = Title::makeTitle($ns, $dbk);
//				$titleText = $title->getPrefixedDBkey();
//			}
//			if (isset(this.mTplDomCache[$titleText])) {
//				return [ this.mTplDomCache[$titleText], $title ];
//			}
//
//			# Cache miss, go to the database
//			list($text, $title) = this.fetchTemplateAndTitle($title);
//
//			if ($text === false) {
//				this.mTplDomCache[$titleText] = false;
//				return [ false, $title ];
//			}
//
//			$dom = this.preprocessToDom($text, self::PTD_FOR_INCLUSION);
//			this.mTplDomCache[$titleText] = $dom;
//
//			if (!$title->equals($cacheTitle)) {
//				this.mTplRedirCache[$cacheTitle->getPrefixedDBkey()] =
//					[ $title->getNamespace(), $cdb = $title->getDBkey() ];
//			}
//
//			return [ $dom, $title ];
//		}
//
//		/**
//		* Fetch the current revision of a given title. Note that the revision
//		* (and even the title) may not exist in the database, so everything
//		* contributing to the output of the parser should use this method
//		* where possible, rather than getting the revisions themselves. This
//		* method also caches its results, so using it benefits performance.
//		*
//		* @since 1.24
//		* @param Title $title
//		* @return Revision
//		*/
//		public function fetchCurrentRevisionOfTitle($title) {
//			$cacheKey = $title->getPrefixedDBkey();
//			if (!this.currentRevisionCache) {
//				this.currentRevisionCache = new MapCacheLRU(100);
//			}
//			if (!this.currentRevisionCache->has($cacheKey)) {
//				this.currentRevisionCache->set($cacheKey,
//					// Defaults to Parser::statelessFetchRevision()
//					call_user_func(this.mOptions->getCurrentRevisionCallback(), $title, $this)
//				);
//			}
//			return this.currentRevisionCache->get($cacheKey);
//		}
//
//		/**
//		* Wrapper around Revision::newFromTitle to allow passing additional parameters
//		* without passing them on to it.
//		*
//		* @since 1.24
//		* @param Title $title
//		* @param Parser|boolean $parser
//		* @return Revision|boolean False if missing
//		*/
//		public static function statelessFetchRevision(Title $title, $parser = false) {
//			$pageId = $title->getArticleID();
//			$revId = $title->getLatestRevID();
//
//			$rev = Revision::newKnownCurrent(wfGetDB(DB_REPLICA), $pageId, $revId);
//			if ($rev) {
//				$rev->setTitle($title);
//			}
//
//			return $rev;
//		}
//
//		/**
//		* Fetch the unparsed text of a template and register a reference to it.
//		* @param Title $title
//		* @return array (String or false, Title)
//		*/
//		public function fetchTemplateAndTitle($title) {
//			// Defaults to Parser::statelessFetchTemplate()
//			$templateCb = this.mOptions->getTemplateCallback();
//			$stuff = call_user_func($templateCb, $title, $this);
//			// We use U+007F DELETE to distinguish strip markers from regular text.
//			$text = $stuff['text'];
//			if (is_string($stuff['text'])) {
//				$text = strtr($text, "\x7f", "?");
//			}
//			$finalTitle = isset($stuff['finalTitle']) ? $stuff['finalTitle'] : $title;
//			if (isset($stuff['deps'])) {
//				foreach ($stuff['deps'] as $dep) {
//					this.mOutput->addTemplate($dep['title'], $dep['page_id'], $dep['rev_id']);
//					if ($dep['title']->equals(this.getTitle())) {
//						// If we transclude ourselves, the final result
//						// will change based on the new version of the page
//						this.mOutput->setFlag('vary-revision');
//					}
//				}
//			}
//			return [ $text, $finalTitle ];
//		}
//
//		/**
//		* Fetch the unparsed text of a template and register a reference to it.
//		* @param Title $title
//		* @return String|boolean
//		*/
//		public function fetchTemplate($title) {
//			return this.fetchTemplateAndTitle($title)[0];
//		}
//
//		/**
//		* Static function to get a template
//		* Can be overridden via ParserOptions::setTemplateCallback().
//		*
//		* @param Title $title
//		* @param boolean|Parser $parser
//		*
//		* @return array
//		*/
//		public static function statelessFetchTemplate($title, $parser = false) {
//			$text = $skip = false;
//			$finalTitle = $title;
//			$deps = [];
//
//			# Loop to fetch the article, with up to 1 redirect
//			// @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
//			for ($i = 0; $i < 2 && is_object($title); $i++) {
//				// @codingStandardsIgnoreEnd
//				# Give extensions a chance to select the revision instead
//				$id = false; # Assume current
//				Hooks::run('BeforeParserFetchTemplateAndtitle',
//					[ $parser, $title, &$skip, &$id ]);
//
//				if ($skip) {
//					$text = false;
//					$deps[] = [
//						'title' => $title,
//						'page_id' => $title->getArticleID(),
//						'rev_id' => null
//					];
//					break;
//				}
//				# Get the revision
//				if ($id) {
//					$rev = Revision::newFromId($id);
//				} elseif ($parser) {
//					$rev = $parser->fetchCurrentRevisionOfTitle($title);
//				} else {
//					$rev = Revision::newFromTitle($title);
//				}
//				$rev_id = $rev ? $rev->getId() : 0;
//				# If there is no current revision, there is no page
//				if ($id === false && !$rev) {
//					$linkCache = LinkCache::singleton();
//					$linkCache->addBadLinkObj($title);
//				}
//
//				$deps[] = [
//					'title' => $title,
//					'page_id' => $title->getArticleID(),
//					'rev_id' => $rev_id ];
//				if ($rev && !$title->equals($rev->getTitle())) {
//					# We fetched a rev from a different title; register it too...
//					$deps[] = [
//						'title' => $rev->getTitle(),
//						'page_id' => $rev->getPage(),
//						'rev_id' => $rev_id ];
//				}
//
//				if ($rev) {
//					$content = $rev->getContent();
//					$text = $content ? $content->getWikitextForTransclusion() : null;
//
//					Hooks::run('ParserFetchTemplate',
//						[ $parser, $title, $rev, &$text, &$deps ]);
//
//					if ($text === false || $text === null) {
//						$text = false;
//						break;
//					}
//				} elseif ($title->getNamespace() == NS_MEDIAWIKI) {
//					global $wgContLang;
//					$message = wfMessage($wgContLang->lcfirst($title->getText()))->inContentLanguage();
//					if (!$message->exists()) {
//						$text = false;
//						break;
//					}
//					$content = $message->content();
//					$text = $message->plain();
//				} else {
//					break;
//				}
//				if (!$content) {
//					break;
//				}
//				# Redirect?
//				$finalTitle = $title;
//				$title = $content->getRedirectTarget();
//			}
//			return [
//				'text' => $text,
//				'finalTitle' => $finalTitle,
//				'deps' => $deps ];
//		}
//
//		/**
//		* Fetch a file and its title and register a reference to it.
//		* If 'broken' is a key in $options then the file will appear as a broken thumbnail.
//		* @param Title $title
//		* @param array $options Array of options to RepoGroup::findFile
//		* @return File|boolean
//		*/
//		public function fetchFile($title, $options = []) {
//			return this.fetchFileAndTitle($title, $options)[0];
//		}
//
//		/**
//		* Fetch a file and its title and register a reference to it.
//		* If 'broken' is a key in $options then the file will appear as a broken thumbnail.
//		* @param Title $title
//		* @param array $options Array of options to RepoGroup::findFile
//		* @return array (File or false, Title of file)
//		*/
//		public function fetchFileAndTitle($title, $options = []) {
//			$file = this.fetchFileNoRegister($title, $options);
//
//			$time = $file ? $file->getTimestamp() : false;
//			$sha1 = $file ? $file->getSha1() : false;
//			# Register the file as a dependency...
//			this.mOutput->addImage($title->getDBkey(), $time, $sha1);
//			if ($file && !$title->equals($file->getTitle())) {
//				# Update fetched file title
//				$title = $file->getTitle();
//				this.mOutput->addImage($title->getDBkey(), $time, $sha1);
//			}
//			return [ $file, $title ];
//		}
//
//		/**
//		* Helper function for fetchFileAndTitle.
//		*
//		* Also useful if you need to fetch a file but not use it yet,
//		* for example to get the file's handler.
//		*
//		* @param Title $title
//		* @param array $options Array of options to RepoGroup::findFile
//		* @return File|boolean
//		*/
//		protected function fetchFileNoRegister($title, $options = []) {
//			if (isset($options['broken'])) {
//				$file = false; // broken thumbnail forced by hook
//			} elseif (isset($options['sha1'])) { // get by (sha1,timestamp)
//				$file = RepoGroup::singleton()->findFileFromKey($options['sha1'], $options);
//			} else { // get by (name,timestamp)
//				$file = wfFindFile($title, $options);
//			}
//			return $file;
//		}
//
//		/**
//		* Transclude an interwiki link.
//		*
//		* @param Title $title
//		* @param String $action
//		*
//		* @return String
//		*/
//		public function interwikiTransclude($title, $action) {
//			global $wgEnableScaryTranscluding;
//
//			if (!$wgEnableScaryTranscluding) {
//				return wfMessage('scarytranscludedisabled')->inContentLanguage()->text();
//			}
//
//			$url = $title->getFullURL([ 'action' => $action ]);
//
//			if (strlen($url) > 255) {
//				return wfMessage('scarytranscludetoolong')->inContentLanguage()->text();
//			}
//			return this.fetchScaryTemplateMaybeFromCache($url);
//		}
//
//		/**
//		* @param String $url
//		* @return mixed|String
//		*/
//		public function fetchScaryTemplateMaybeFromCache($url) {
//			global $wgTranscludeCacheExpiry;
//			$dbr = wfGetDB(DB_REPLICA);
//			$tsCond = $dbr->timestamp(time() - $wgTranscludeCacheExpiry);
//			$obj = $dbr->selectRow('transcache', [ 'tc_time', 'tc_contents' ],
//					[ 'tc_url' => $url, "tc_time >= " . $dbr->addQuotes($tsCond) ]);
//			if ($obj) {
//				return $obj->tc_contents;
//			}
//
//			$req = MWHttpRequest::factory($url, [], __METHOD__);
//			$status = $req->execute(); // Status Object
//			if ($status->isOK()) {
//				$text = $req->getContent();
//			} elseif ($req->getStatus() != 200) {
//				// Though we failed to fetch the content, this status is useless.
//				return wfMessage('scarytranscludefailed-httpstatus')
//					->params($url, $req->getStatus() /* HTTP status */)->inContentLanguage()->text();
//			} else {
//				return wfMessage('scarytranscludefailed', $url)->inContentLanguage()->text();
//			}
//
//			$dbw = wfGetDB(DB_MASTER);
//			$dbw->replace('transcache', [ 'tc_url' ], [
//				'tc_url' => $url,
//				'tc_time' => $dbw->timestamp(time()),
//				'tc_contents' => $text
//			]);
//			return $text;
//		}
//
//		/**
//		* Triple brace replacement -- used for template arguments
//		* @private
//		*
//		* @param array $piece
//		* @param PPFrame $frame
//		*
//		* @return array
//		*/
//		public function argSubstitution($piece, $frame) {
//
//			$error = false;
//			$parts = $piece['parts'];
//			$nameWithSpaces = $frame->expand($piece['title']);
//			$argName = trim($nameWithSpaces);
//			$Object = false;
//			$text = $frame->getArgument($argName);
//			if ($text === false && $parts->getLength() > 0
//				&& (this.ot['html']
//					|| this.ot['pre']
//					|| (this.ot['wiki'] && $frame->isTemplate())
//				)
//			) {
//				# No match in frame, use the supplied default
//				$Object = $parts->item(0)->getChildren();
//			}
//			if (!this.incrementIncludeSize('arg', strlen($text))) {
//				$error = '<!-- WARNING: argument omitted, expansion size too large -->';
//				this.limitationWarn('post-expand-template-argument');
//			}
//
//			if ($text === false && $Object === false) {
//				# No match anywhere
//				$Object = $frame->virtualBracketedImplode('{{{', '|', '}}}', $nameWithSpaces, $parts);
//			}
//			if ($error !== false) {
//				$text .= $error;
//			}
//			if ($Object !== false) {
//				$ret = [ 'Object' => $Object ];
//			} else {
//				$ret = [ 'text' => $text ];
//			}
//
//			return $ret;
//		}
//
//		/**
//		* Return the text to be used for a given extension tag.
//		* This is the ghost of strip().
//		*
//		* @param array $params Associative array of parameters:
//		*     name       PPNode for the tag name
//		*     attr       PPNode for unparsed text where tag attributes are thought to be
//		*     attributes Optional associative array of parsed attributes
//		*     inner      Contents of extension element
//		*     noClose    Original text did not have a close tag
//		* @param PPFrame $frame
//		*
//		* @throws MWException
//		* @return String
//		*/
//		public function extensionSubstitution($params, $frame) {
//			static $errorStr = '<span class="error">';
//			static $errorLen = 20;
//
//			$name = $frame->expand($params['name']);
//			if (substr($name, 0, $errorLen) === $errorStr) {
//				// Probably expansion depth or node count exceeded. Just punt the
//				// error up.
//				return $name;
//			}
//
//			$attrText = !isset($params['attr']) ? null : $frame->expand($params['attr']);
//			if (substr($attrText, 0, $errorLen) === $errorStr) {
//				// See above
//				return $attrText;
//			}
//
//			// We can't safely check if the expansion for $content resulted in an
//			// error, because the content could happen to be the error String
//			// (T149622).
//			$content = !isset($params['inner']) ? null : $frame->expand($params['inner']);
//
//			$marker = self::MARKER_PREFIX . "-$name-"
//				. sprintf('%08X', this.mMarkerIndex++) . self::MARKER_SUFFIX;
//
//			$isFunctionTag = isset(this.mFunctionTagHooks[strtolower($name)]) &&
//				(this.ot['html'] || this.ot['pre']);
//			if ($isFunctionTag) {
//				$markerType = 'none';
//			} else {
//				$markerType = 'general';
//			}
//			if (this.ot['html'] || $isFunctionTag) {
//				$name = strtolower($name);
//				$attributes = Sanitizer::decodeTagAttributes($attrText);
//				if (isset($params['attributes'])) {
//					$attributes = $attributes + $params['attributes'];
//				}
//
//				if (isset(this.mTagHooks[$name])) {
//					# Workaround for PHP bug 35229 and similar
//					if (!is_callable(this.mTagHooks[$name])) {
//						throw new MWException("Tag hook for $name is not callable\n");
//					}
//					$output = call_user_func_array(this.mTagHooks[$name],
//						[ $content, $attributes, $this, $frame ]);
//				} elseif (isset(this.mFunctionTagHooks[$name])) {
//					list($callback,) = this.mFunctionTagHooks[$name];
//					if (!is_callable($callback)) {
//						throw new MWException("Tag hook for $name is not callable\n");
//					}
//
//					$output = call_user_func_array($callback, [ &$this, $frame, $content, $attributes ]);
//				} else {
//					$output = '<span class="error">Invalid tag extension name: ' .
//						htmlspecialchars($name) . '</span>';
//				}
//
//				if (is_array($output)) {
//					# Extract flags to local scope (to override $markerType)
//					$flags = $output;
//					$output = $flags[0];
//					unset($flags[0]);
//					extract($flags);
//				}
//			} else {
//				if (is_null($attrText)) {
//					$attrText = '';
//				}
//				if (isset($params['attributes'])) {
//					foreach ($params['attributes'] as $attrName => $attrValue) {
//						$attrText .= ' ' . htmlspecialchars($attrName) . '="' .
//							htmlspecialchars($attrValue) . '"';
//					}
//				}
//				if ($content === null) {
//					$output = "<$name$attrText/>";
//				} else {
//					$close = is_null($params['close']) ? '' : $frame->expand($params['close']);
//					if (substr($close, 0, $errorLen) === $errorStr) {
//						// See above
//						return $close;
//					}
//					$output = "<$name$attrText>$content$close";
//				}
//			}
//
//			if ($markerType === 'none') {
//				return $output;
//			} elseif ($markerType === 'nowiki') {
//				this.mStripState->addNoWiki($marker, $output);
//			} elseif ($markerType === 'general') {
//				this.mStripState->addGeneral($marker, $output);
//			} else {
//				throw new MWException(__METHOD__ . ': invalid marker type');
//			}
//			return $marker;
//		}
//
//		/**
//		* Increment an include size counter
//		*
//		* @param String $type The type of expansion
//		* @param int $size The size of the text
//		* @return boolean False if this inclusion would take it over the maximum, true otherwise
//		*/
//		public function incrementIncludeSize($type, $size) {
//			if (this.mIncludeSizes[$type] + $size > this.mOptions->getMaxIncludeSize()) {
//				return false;
//			} else {
//				this.mIncludeSizes[$type] += $size;
//				return true;
//			}
//		}
//
//		/**
//		* Increment the expensive function count
//		*
//		* @return boolean False if the limit has been exceeded
//		*/
//		public function incrementExpensiveFunctionCount() {
//			this.mExpensiveFunctionCount++;
//			return this.mExpensiveFunctionCount <= this.mOptions->getExpensiveParserFunctionLimit();
//		}
//
//		/**
//		* Strip double-underscore items like __NOGALLERY__ and __NOTOC__
//		* Fills this.mDoubleUnderscores, returns the modified text
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function doDoubleUnderscore($text) {
//
//			# The position of __TOC__ needs to be recorded
//			$mw = MagicWord::get('toc');
//			if ($mw->match($text)) {
//				this.mShowToc = true;
//				this.mForceTocPosition = true;
//
//				# Set a placeholder. At the end we'll fill it in with the TOC.
//				$text = $mw->replace('<!--MWTOC-->', $text, 1);
//
//				# Only keep the first one.
//				$text = $mw->replace('', $text);
//			}
//
//			# Now match and remove the rest of them
//			$mwa = MagicWord::getDoubleUnderscoreArray();
//			this.mDoubleUnderscores = $mwa->matchAndRemove($text);
//
//			if (isset(this.mDoubleUnderscores['nogallery'])) {
//				this.mOutput->mNoGallery = true;
//			}
//			if (isset(this.mDoubleUnderscores['notoc']) && !this.mForceTocPosition) {
//				this.mShowToc = false;
//			}
//			if (isset(this.mDoubleUnderscores['hiddencat'])
//				&& this.mTitle->getNamespace() == NS_CATEGORY
//			) {
//				this.addTrackingCategory('hidden-category-category');
//			}
//			# (T10068) Allow control over whether robots index a page.
//			# __INDEX__ always overrides __NOINDEX__, see T16899
//			if (isset(this.mDoubleUnderscores['noindex']) && this.mTitle->canUseNoindex()) {
//				this.mOutput->setIndexPolicy('noindex');
//				this.addTrackingCategory('noindex-category');
//			}
//			if (isset(this.mDoubleUnderscores['index']) && this.mTitle->canUseNoindex()) {
//				this.mOutput->setIndexPolicy('index');
//				this.addTrackingCategory('index-category');
//			}
//
//			# Cache all double underscores in the database
//			foreach (this.mDoubleUnderscores as $key => $val) {
//				this.mOutput->setProperty($key, '');
//			}
//
//			return $text;
//		}
//
//		/**
//		* @see ParserOutput::addTrackingCategory()
//		* @param String $msg Message key
//		* @return boolean Whether the addition was successful
//		*/
//		public function addTrackingCategory($msg) {
//			return this.mOutput->addTrackingCategory($msg, this.mTitle);
//		}
//
//		/**
//		* This function accomplishes several tasks:
//		* 1) Auto-number headings if that option is enabled
//		* 2) Add an [edit] link to sections for users who have enabled the option and can edit the page
//		* 3) Add a Table of contents on the top for users who have enabled the option
//		* 4) Auto-anchor headings
//		*
//		* It loops through all headlines, collects the necessary data, then splits up the
//		* String and re-inserts the newly formatted headlines.
//		*
//		* @param String $text
//		* @param String $origText Original, untouched wikitext
//		* @param boolean $isMain
//		* @return mixed|String
//		* @private
//		*/
//		public function formatHeadings($text, $origText, $isMain = true) {
//			global $wgMaxTocLevel, $wgExperimentalHtmlIds;
//
//			# Inhibit editsection links if requested in the page
//			if (isset(this.mDoubleUnderscores['noeditsection'])) {
//				$maybeShowEditLink = $showEditLink = false;
//			} else {
//				$maybeShowEditLink = true; /* Actual presence will depend on ParserOptions option */
//				$showEditLink = this.mOptions->getEditSection();
//			}
//			if ($showEditLink) {
//				this.mOutput->setEditSectionTokens(true);
//			}
//
//			# Get all headlines for numbering them and adding funky stuff like [edit]
//			# links - this is for later, but we need the number of headlines right now
//			$matches = [];
//			$numMatches = preg_match_all(
//				'/<H(?P<level>[1-6])(?P<attrib>.*?>)\s*(?P<header>[\s\S]*?)\s*<\/H[1-6] *>/i',
//				$text,
//				$matches
//			);
//
//			# if there are fewer than 4 headlines in the article, do not show TOC
//			# unless it's been explicitly enabled.
//			$enoughToc = this.mShowToc &&
//				(($numMatches >= 4) || this.mForceTocPosition);
//
//			# Allow user to stipulate that a page should have a "new section"
//			# link added via __NEWSECTIONLINK__
//			if (isset(this.mDoubleUnderscores['newsectionlink'])) {
//				this.mOutput->setNewSection(true);
//			}
//
//			# Allow user to remove the "new section"
//			# link via __NONEWSECTIONLINK__
//			if (isset(this.mDoubleUnderscores['nonewsectionlink'])) {
//				this.mOutput->hideNewSection(true);
//			}
//
//			# if the String __FORCETOC__ (not case-sensitive) occurs in the HTML,
//			# override above conditions and always show TOC above first header
//			if (isset(this.mDoubleUnderscores['forcetoc'])) {
//				this.mShowToc = true;
//				$enoughToc = true;
//			}
//
//			# headline counter
//			$headlineCount = 0;
//			$numVisible = 0;
//
//			# Ugh .. the TOC should have neat indentation levels which can be
//			# passed to the skin functions. These are determined here
//			$toc = '';
//			$full = '';
//			$head = [];
//			$sublevelCount = [];
//			$levelCount = [];
//			$level = 0;
//			$prevlevel = 0;
//			$toclevel = 0;
//			$prevtoclevel = 0;
//			$markerRegex = self::MARKER_PREFIX . "-h-(\d+)-" . self::MARKER_SUFFIX;
//			$baseTitleText = this.mTitle->getPrefixedDBkey();
//			$oldType = this.mOutputType;
//			this.setOutputType(self::OT_WIKI);
//			$frame = this.getPreprocessor()->newFrame();
//			$root = this.preprocessToDom($origText);
//			$node = $root->getFirstChild();
//			$byteOffset = 0;
//			$tocraw = [];
//			$refers = [];
//
//			$headlines = $numMatches !== false ? $matches[3] : [];
//
//			foreach ($headlines as $headline) {
//				$isTemplate = false;
//				$titleText = false;
//				$sectionIndex = false;
//				$numbering = '';
//				$markerMatches = [];
//				if (preg_match("/^$markerRegex/", $headline, $markerMatches)) {
//					$serial = $markerMatches[1];
//					list($titleText, $sectionIndex) = this.mHeadings[$serial];
//					$isTemplate = ($titleText != $baseTitleText);
//					$headline = preg_replace("/^$markerRegex\\s*/", "", $headline);
//				}
//
//				if ($toclevel) {
//					$prevlevel = $level;
//				}
//				$level = $matches[1][$headlineCount];
//
//				if ($level > $prevlevel) {
//					# Increase TOC level
//					$toclevel++;
//					$sublevelCount[$toclevel] = 0;
//					if ($toclevel < $wgMaxTocLevel) {
//						$prevtoclevel = $toclevel;
//						$toc .= Linker::tocIndent();
//						$numVisible++;
//					}
//				} elseif ($level < $prevlevel && $toclevel > 1) {
//					# Decrease TOC level, find level to jump to
//
//					for ($i = $toclevel; $i > 0; $i--) {
//						if ($levelCount[$i] == $level) {
//							# Found last matching level
//							$toclevel = $i;
//							break;
//						} elseif ($levelCount[$i] < $level) {
//							# Found first matching level below current level
//							$toclevel = $i + 1;
//							break;
//						}
//					}
//					if ($i == 0) {
//						$toclevel = 1;
//					}
//					if ($toclevel < $wgMaxTocLevel) {
//						if ($prevtoclevel < $wgMaxTocLevel) {
//							# Unindent only if the previous toc level was shown :p
//							$toc .= Linker::tocUnindent($prevtoclevel - $toclevel);
//							$prevtoclevel = $toclevel;
//						} else {
//							$toc .= Linker::tocLineEnd();
//						}
//					}
//				} else {
//					# No change in level, end TOC line
//					if ($toclevel < $wgMaxTocLevel) {
//						$toc .= Linker::tocLineEnd();
//					}
//				}
//
//				$levelCount[$toclevel] = $level;
//
//				# count number of headlines for each level
//				$sublevelCount[$toclevel]++;
//				$dot = 0;
//				for ($i = 1; $i <= $toclevel; $i++) {
//					if (!empty($sublevelCount[$i])) {
//						if ($dot) {
//							$numbering .= '.';
//						}
//						$numbering .= this.getTargetLanguage()->formatNum($sublevelCount[$i]);
//						$dot = 1;
//					}
//				}
//
//				# The safe header is a version of the header text safe to use for links
//
//				# Remove link placeholders by the link text.
//				#     <!--LINK number-->
//				# turns into
//				#     link text with suffix
//				# Do this before unstrip since link text can contain strip markers
//				$safeHeadline = this.replaceLinkHoldersText($headline);
//
//				# Avoid insertion of weird stuff like <math> by expanding the relevant sections
//				$safeHeadline = this.mStripState->unstripBoth($safeHeadline);
//
//				# Strip out HTML (first regex removes any tag not allowed)
//				# Allowed tags are:
//				# * <sup> and <sub> (T10393)
//				# * <i> (T28375)
//				# * <b> (r105284)
//				# * <bdi> (T74884)
//				# * <span dir="rtl"> and <span dir="ltr"> (T37167)
//				# * <s> and <strike> (T35715)
//				# We strip any parameter from accepted tags (second regex), except dir="rtl|ltr" from <span>,
//				# to allow setting directionality in toc items.
//				$tocline = preg_replace(
//					[
//						'#<(?!/?(span|sup|sub|bdi|i|b|s|strike)(?: [^>]*)?>).*?>#',
//						'#<(/?(?:span(?: dir="(?:rtl|ltr)")?|sup|sub|bdi|i|b|s|strike))(?: .*?)?>#'
//					],
//					[ '', '<$1>' ],
//					$safeHeadline
//				);
//
//				# Strip '<span></span>', which is the result from the above if
//				# <span id="foo"></span> is used to produce an additional anchor
//				# for a section.
//				$tocline = str_replace('<span></span>', '', $tocline);
//
//				$tocline = trim($tocline);
//
//				# For the anchor, strip out HTML-y stuff period
//				$safeHeadline = preg_replace('/<.*?>/', '', $safeHeadline);
//				$safeHeadline = Sanitizer::normalizeSectionNameWhitespace($safeHeadline);
//
//				# Save headline for section edit hint before it's escaped
//				$headlineHint = $safeHeadline;
//
//				if ($wgExperimentalHtmlIds) {
//					# For reverse compatibility, provide an id that's
//					# HTML4-compatible, like we used to.
//					# It may be worth noting, academically, that it's possible for
//					# the legacy anchor to conflict with a non-legacy headline
//					# anchor on the page.  In this case likely the "correct" thing
//					# would be to either drop the legacy anchors or make sure
//					# they're numbered first.  However, this would require people
//					# to type in section names like "abc_.D7.93.D7.90.D7.A4"
//					# manually, so let's not bother worrying about it.
//					$legacyHeadline = Sanitizer::escapeId($safeHeadline,
//						[ 'noninitial', 'legacy' ]);
//					$safeHeadline = Sanitizer::escapeId($safeHeadline);
//
//					if ($legacyHeadline == $safeHeadline) {
//						# No reason to have both (in fact, we can't)
//						$legacyHeadline = false;
//					}
//				} else {
//					$legacyHeadline = false;
//					$safeHeadline = Sanitizer::escapeId($safeHeadline,
//						'noninitial');
//				}
//
//				# HTML names must be case-insensitively unique (T12721).
//				# This does not apply to Unicode characters per
//				# https://www.w3.org/TR/html5/infrastructure.html#case-sensitivity-and-String-comparison
//				# @todo FIXME: We may be changing them depending on the current locale.
//				$arrayKey = strtolower($safeHeadline);
//				if ($legacyHeadline === false) {
//					$legacyArrayKey = false;
//				} else {
//					$legacyArrayKey = strtolower($legacyHeadline);
//				}
//
//				# Create the anchor for linking from the TOC to the section
//				$anchor = $safeHeadline;
//				$legacyAnchor = $legacyHeadline;
//				if (isset($refers[$arrayKey])) {
//					// @codingStandardsIgnoreStart
//					for ($i = 2; isset($refers["${arrayKey}_$i"]); ++$i);
//					// @codingStandardsIgnoreEnd
//					$anchor .= "_$i";
//					$refers["${arrayKey}_$i"] = true;
//				} else {
//					$refers[$arrayKey] = true;
//				}
//				if ($legacyHeadline !== false && isset($refers[$legacyArrayKey])) {
//					// @codingStandardsIgnoreStart
//					for ($i = 2; isset($refers["${legacyArrayKey}_$i"]); ++$i);
//					// @codingStandardsIgnoreEnd
//					$legacyAnchor .= "_$i";
//					$refers["${legacyArrayKey}_$i"] = true;
//				} else {
//					$refers[$legacyArrayKey] = true;
//				}
//
//				# Don't number the heading if it is the only one (looks silly)
//				if (count($matches[3]) > 1 && this.mOptions->getNumberHeadings()) {
//					# the two are different if the line contains a link
//					$headline = Html::element(
//						'span',
//						[ 'class' => 'mw-headline-number' ],
//						$numbering
//					) . ' ' . $headline;
//				}
//
//				if ($enoughToc && (!isset($wgMaxTocLevel) || $toclevel < $wgMaxTocLevel)) {
//					$toc .= Linker::tocLine($anchor, $tocline,
//						$numbering, $toclevel, ($isTemplate ? false : $sectionIndex));
//				}
//
//				# Add the section to the section tree
//				# Find the DOM node for this header
//				$noOffset = ($isTemplate || $sectionIndex === false);
//				while ($node && !$noOffset) {
//					if ($node->getName() === 'h') {
//						$bits = $node->splitHeading();
//						if ($bits['i'] == $sectionIndex) {
//							break;
//						}
//					}
//					$byteOffset += mb_strlen(this.mStripState->unstripBoth(
//						$frame->expand($node, PPFrame::RECOVER_ORIG)));
//					$node = $node->getNextSibling();
//				}
//				$tocraw[] = [
//					'toclevel' => $toclevel,
//					'level' => $level,
//					'line' => $tocline,
//					'number' => $numbering,
//					'index' => ($isTemplate ? 'T-' : '') . $sectionIndex,
//					'fromtitle' => $titleText,
//					'byteoffset' => ($noOffset ? null : $byteOffset),
//					'anchor' => $anchor,
//				];
//
//				# give headline the correct <h#> tag
//				if ($maybeShowEditLink && $sectionIndex !== false) {
//					// Output edit section links as markers with styles that can be customized by skins
//					if ($isTemplate) {
//						# Put a T flag in the section identifier, to indicate to extractSections()
//						# that sections inside <includeonly> should be counted.
//						$editsectionPage = $titleText;
//						$editsectionSection = "T-$sectionIndex";
//						$editsectionContent = null;
//					} else {
//						$editsectionPage = this.mTitle->getPrefixedText();
//						$editsectionSection = $sectionIndex;
//						$editsectionContent = $headlineHint;
//					}
//					// We use a bit of pesudo-xml for editsection markers. The
//					// language converter is run later on. Using a UNIQ style marker
//					// leads to the converter screwing up the tokens when it
//					// converts stuff. And trying to insert strip tags fails too. At
//					// this point all real inputted tags have already been escaped,
//					// so we don't have to worry about a user trying to input one of
//					// these markers directly. We use a page and section attribute
//					// to stop the language converter from converting these
//					// important bits of data, but put the headline hint inside a
//					// content block because the language converter is supposed to
//					// be able to convert that piece of data.
//					// Gets replaced with html in ParserOutput::getText
//					$editlink = '<mw:editsection page="' . htmlspecialchars($editsectionPage);
//					$editlink .= '" section="' . htmlspecialchars($editsectionSection) . '"';
//					if ($editsectionContent !== null) {
//						$editlink .= '>' . $editsectionContent . '</mw:editsection>';
//					} else {
//						$editlink .= '/>';
//					}
//				} else {
//					$editlink = '';
//				}
//				$head[$headlineCount] = Linker::makeHeadline($level,
//					$matches['attrib'][$headlineCount], $anchor, $headline,
//					$editlink, $legacyAnchor);
//
//				$headlineCount++;
//			}
//
//			this.setOutputType($oldType);
//
//			# Never ever show TOC if no headers
//			if ($numVisible < 1) {
//				$enoughToc = false;
//			}
//
//			if ($enoughToc) {
//				if ($prevtoclevel > 0 && $prevtoclevel < $wgMaxTocLevel) {
//					$toc .= Linker::tocUnindent($prevtoclevel - 1);
//				}
//				$toc = Linker::tocList($toc, this.mOptions->getUserLangObj());
//				this.mOutput->setTOCHTML($toc);
//				$toc = self::TOC_START . $toc . self::TOC_END;
//				this.mOutput->addModules('mediawiki.toc');
//			}
//
//			if ($isMain) {
//				this.mOutput->setSections($tocraw);
//			}
//
//			# split up and insert constructed headlines
//			$blocks = preg_split('/<H[1-6].*?>[\s\S]*?<\/H[1-6]>/i', $text);
//			$i = 0;
//
//			// build an array of document sections
//			$sections = [];
//			foreach ($blocks as $block) {
//				// $head is zero-based, sections aren't.
//				if (empty($head[$i - 1])) {
//					$sections[$i] = $block;
//				} else {
//					$sections[$i] = $head[$i - 1] . $block;
//				}
//
//				/**
//				* Send a hook, one per section.
//				* The idea here is to be able to make section-level DIVs, but to do so in a
//				* lower-impact, more correct way than r50769
//				*
//				* $this : caller
//				* $section : the section number
//				* &$sectionContent : ref to the content of the section
//				* $showEditLinks : boolean describing whether this section has an edit link
//				*/
//				Hooks::run('ParserSectionCreate', [ $this, $i, &$sections[$i], $showEditLink ]);
//
//				$i++;
//			}
//
//			if ($enoughToc && $isMain && !this.mForceTocPosition) {
//				// append the TOC at the beginning
//				// Top anchor now in skin
//				$sections[0] = $sections[0] . $toc . "\n";
//			}
//
//			$full .= implode('', $sections);
//
//			if (this.mForceTocPosition) {
//				return str_replace('<!--MWTOC-->', $toc, $full);
//			} else {
//				return $full;
//			}
//		}
//
//		/**
//		* Transform wiki markup when saving a page by doing "\r\n" -> "\n"
//		* conversion, substituting signatures, {{subst:}} templates, etc.
//		*
//		* @param String $text The text to transform
//		* @param Title $title The Title Object for the current article
//		* @param User $user The User Object describing the current user
//		* @param ParserOptions $options Parsing options
//		* @param boolean $clearState Whether to clear the parser state first
//		* @return String The altered wiki markup
//		*/
//		public function preSaveTransform($text, Title $title, User $user,
//			ParserOptions $options, $clearState = true
//		) {
//			if ($clearState) {
//				$magicScopeVariable = this.synchronized();
//			}
//			this.startParse($title, $options, self::OT_WIKI, $clearState);
//			this.setUser($user);
//
//			// We still normalize line endings for backwards-compatibility
//			// with other code that just calls PST, but this should already
//			// be handled in TextContent subclasses
//			$text = TextContent::normalizeLineEndings($text);
//
//			if ($options->getPreSaveTransform()) {
//				$text = this.pstPass2($text, $user);
//			}
//			$text = this.mStripState->unstripBoth($text);
//
//			this.setUser(null); # Reset
//
//			return $text;
//		}
//
//		/**
//		* Pre-save transform helper function
//		*
//		* @param String $text
//		* @param User $user
//		*
//		* @return String
//		*/
//		private function pstPass2($text, $user) {
//			global $wgContLang;
//
//			# Note: This is the timestamp saved as hardcoded wikitext to
//			# the database, we use $wgContLang here in order to give
//			# everyone the same signature and use the default one rather
//			# than the one selected in each user's preferences.
//			# (see also T14815)
//			$ts = this.mOptions->getTimestamp();
//			$timestamp = MWTimestamp::getLocalInstance($ts);
//			$ts = $timestamp->format('YmdHis');
//			$tzMsg = $timestamp->getTimezoneMessage()->inContentLanguage()->text();
//
//			$d = $wgContLang->timeanddate($ts, false, false) . " ($tzMsg)";
//
//			# Variable replacement
//			# Because mOutputType is OT_WIKI, this will only process {{subst:xxx}} type tags
//			$text = this.replaceVariables($text);
//
//			# This works almost by chance, as the replaceVariables are done before the getUserSig(),
//			# which may corrupt this parser instance via its wfMessage()->text() call-
//
//			# Signatures
//			$sigText = this.getUserSig($user);
//			$text = strtr($text, [
//				'~~~~~' => $d,
//				'~~~~' => "$sigText $d",
//				'~~~' => $sigText
//			]);
//
//			# Context links ("pipe tricks"): [[|name]] and [[name (context)|]]
//			$tc = '[' . Title::legalChars() . ']';
//			$nc = '[ _0-9A-Za-z\x80-\xff-]'; # Namespaces can use non-ascii!
//
//			// [[ns:page (context)|]]
//			$p1 = "/\[\[(:?$nc+:|:|)($tc+?)(?\\($tc+\\))\\|]]/";
//			// [[ns:page(context)|]] (double-width brackets, added in r40257)
//			$p4 = "/\[\[(:?$nc+:|:|)($tc+?)(?($tc+))\\|]]/";
//			// [[ns:page (context), context|]] (using either single or double-width comma)
//			$p3 = "/\[\[(:?$nc+:|:|)($tc+?)(?\\($tc+\\)|)((?:, |,)$tc+|)\\|]]/";
//			// [[|page]] (reverse pipe trick: add context from page title)
//			$p2 = "/\[\[\\|($tc+)]]/";
//
//			# try $p1 first, to turn "[[A, B (C)|]]" into "[[A, B (C)|A, B]]"
//			$text = preg_replace($p1, '[[\\1\\2\\3|\\2]]', $text);
//			$text = preg_replace($p4, '[[\\1\\2\\3|\\2]]', $text);
//			$text = preg_replace($p3, '[[\\1\\2\\3\\4|\\2]]', $text);
//
//			$t = this.mTitle->getText();
//			$m = [];
//			if (preg_match("/^($nc+:|)$tc+?(\\($tc+\\))$/", $t, $m)) {
//				$text = preg_replace($p2, "[[$m[1]\\1$m[2]|\\1]]", $text);
//			} elseif (preg_match("/^($nc+:|)$tc+?(, $tc+|)$/", $t, $m) && "$m[1]$m[2]" != '') {
//				$text = preg_replace($p2, "[[$m[1]\\1$m[2]|\\1]]", $text);
//			} else {
//				# if there's no context, don't bother duplicating the title
//				$text = preg_replace($p2, '[[\\1]]', $text);
//			}
//
//			return $text;
//		}
//
//		/**
//		* Fetch the user's signature text, if any, and normalize to
//		* validated, ready-to-insert wikitext.
//		* If you have pre-fetched the nickname or the fancySig option, you can
//		* specify them here to save a database query.
//		* Do not reuse this parser instance after calling getUserSig(),
//		* as it may have changed if it's the $wgParser.
//		*
//		* @param User $user
//		* @param String|boolean $nickname Nickname to use or false to use user's default nickname
//		* @param boolean|null $fancySig whether the nicknname is the complete signature
//		*    or null to use default value
//		* @return String
//		*/
//		public function getUserSig(&$user, $nickname = false, $fancySig = null) {
//			global $wgMaxSigChars;
//
//			$username = $user->getName();
//
//			# If not given, retrieve from the user Object.
//			if ($nickname === false) {
//				$nickname = $user->getOption('nickname');
//			}
//
//			if (is_null($fancySig)) {
//				$fancySig = $user->getBoolOption('fancysig');
//			}
//
//			$nickname = $nickname == null ? $username : $nickname;
//
//			if (mb_strlen($nickname) > $wgMaxSigChars) {
//				$nickname = $username;
//				wfDebug(__METHOD__ . ": $username has overlong signature.\n");
//			} elseif ($fancySig !== false) {
//				# Sig. might contain markup; validate this
//				if (this.validateSig($nickname) !== false) {
//					# Validated; clean up (if needed) and return it
//					return this.cleanSig($nickname, true);
//				} else {
//					# Failed to validate; fall back to the default
//					$nickname = $username;
//					wfDebug(__METHOD__ . ": $username has bad XML tags in signature.\n");
//				}
//			}
//
//			# Make sure nickname doesnt get a sig in a sig
//			$nickname = self::cleanSigInSig($nickname);
//
//			# If we're still here, make it a link to the user page
//			$userText = wfEscapeWikiText($username);
//			$nickText = wfEscapeWikiText($nickname);
//			$msgName = $user->isAnon() ? 'signature-anon' : 'signature';
//
//			return wfMessage($msgName, $userText, $nickText)->inContentLanguage()
//				->title(this.getTitle())->text();
//		}
//
//		/**
//		* Check that the user's signature contains no bad XML
//		*
//		* @param String $text
//		* @return String|boolean An expanded String, or false if invalid.
//		*/
//		public function validateSig($text) {
//			return Xml::isWellFormedXmlFragment($text) ? $text : false;
//		}
//
//		/**
//		* Clean up signature text
//		*
//		* 1) Strip 3, 4 or 5 tildes out of signatures @see cleanSigInSig
//		* 2) Substitute all transclusions
//		*
//		* @param String $text
//		* @param boolean $parsing Whether we're cleaning (preferences save) or parsing
//		* @return String Signature text
//		*/
//		public function cleanSig($text, $parsing = false) {
//			if (!$parsing) {
//				global $wgTitle;
//				$magicScopeVariable = this.synchronized();
//				this.startParse($wgTitle, new ParserOptions, self::OT_PREPROCESS, true);
//			}
//
//			# Option to disable this feature
//			if (!this.mOptions->getCleanSignatures()) {
//				return $text;
//			}
//
//			# @todo FIXME: Regex doesn't respect extension tags or nowiki
//			#  => Move this logic to braceSubstitution()
//			$substWord = MagicWord::get('subst');
//			$substRegex = '/\{\{(?!(?:' . $substWord->getBaseRegex() . '))/x' . $substWord->getRegexCase();
//			$substText = '{{' . $substWord->getSynonym(0);
//
//			$text = preg_replace($substRegex, $substText, $text);
//			$text = self::cleanSigInSig($text);
//			$dom = this.preprocessToDom($text);
//			$frame = this.getPreprocessor()->newFrame();
//			$text = $frame->expand($dom);
//
//			if (!$parsing) {
//				$text = this.mStripState->unstripBoth($text);
//			}
//
//			return $text;
//		}
//
//		/**
//		* Strip 3, 4 or 5 tildes out of signatures.
//		*
//		* @param String $text
//		* @return String Signature text with /~{3,5}/ removed
//		*/
//		public static function cleanSigInSig($text) {
//			$text = preg_replace('/~{3,5}/', '', $text);
//			return $text;
//		}
//
//		/**
//		* Set up some variables which are usually set up in parse()
//		* so that an external function can call some class members with confidence
//		*
//		* @param Title|null $title
//		* @param ParserOptions $options
//		* @param int $outputType
//		* @param boolean $clearState
//		*/
//		public function startExternalParse(Title $title = null, ParserOptions $options,
//			$outputType, $clearState = true
//		) {
//			this.startParse($title, $options, $outputType, $clearState);
//		}
//
//		/**
//		* @param Title|null $title
//		* @param ParserOptions $options
//		* @param int $outputType
//		* @param boolean $clearState
//		*/
//		private function startParse(Title $title = null, ParserOptions $options,
//			$outputType, $clearState = true
//		) {
//			this.setTitle($title);
//			this.mOptions = $options;
//			this.setOutputType($outputType);
//			if ($clearState) {
//				this.clearState();
//			}
//		}
//
//		/**
//		* Wrapper for preprocess()
//		*
//		* @param String $text The text to preprocess
//		* @param ParserOptions $options Options
//		* @param Title|null $title Title Object or null to use $wgTitle
//		* @return String
//		*/
//		public function transformMsg($text, $options, $title = null) {
//			static $executing = false;
//
//			# Guard against infinite recursion
//			if ($executing) {
//				return $text;
//			}
//			$executing = true;
//
//			if (!$title) {
//				global $wgTitle;
//				$title = $wgTitle;
//			}
//
//			$text = this.preprocess($text, $title, $options);
//
//			$executing = false;
//			return $text;
//		}
//
//		/**
//		* Create an HTML-style tag, e.g. "<yourtag>special text</yourtag>"
//		* The callback should have the following form:
//		*    function myParserHook($text, $params, $parser, $frame) { ... }
//		*
//		* Transform and return $text. Use $parser for any required context, e.g. use
//		* $parser->getTitle() and $parser->getOptions() not $wgTitle or $wgOut->mParserOptions
//		*
//		* Hooks may return extended information by returning an array, of which the
//		* first numbered element (index 0) must be the return String, and all other
//		* entries are extracted into local variables within an @gplx.Internal protected function
//		* in the Parser class.
//		*
//		* This interface (introduced r61913) appears to be undocumented, but
//		* 'markerType' is used by some core tag hooks to override which strip
//		* array their results are placed in. **Use great caution if attempting
//		* this interface, as it is not documented and injudicious use could smash
//		* private variables.**
//		*
//		* @param String $tag The tag to use, e.g. 'hook' for "<hook>"
//		* @param callable $callback The callback function (and Object) to use for the tag
//		* @throws MWException
//		* @return callable|null The old value of the mTagHooks array associated with the hook
//		*/
//		public function setHook($tag, $callback) {
//			$tag = strtolower($tag);
//			if (preg_match('/[<>\r\n]/', $tag, $m)) {
//				throw new MWException("Invalid character {$m[0]} in setHook('$tag', ...) call");
//			}
//			$oldVal = isset(this.mTagHooks[$tag]) ? this.mTagHooks[$tag] : null;
//			this.mTagHooks[$tag] = $callback;
//			if (!in_array($tag, this.mStripList)) {
//				this.mStripList[] = $tag;
//			}
//
//			return $oldVal;
//		}
//
//		/**
//		* As setHook(), but letting the contents be parsed.
//		*
//		* Transparent tag hooks are like regular XML-style tag hooks, except they
//		* operate late in the transformation sequence, on HTML instead of wikitext.
//		*
//		* This is probably obsoleted by things dealing with parser frames?
//		* The only extension currently using it is geoserver.
//		*
//		* @since 1.10
//		* @todo better document or deprecate this
//		*
//		* @param String $tag The tag to use, e.g. 'hook' for "<hook>"
//		* @param callable $callback The callback function (and Object) to use for the tag
//		* @throws MWException
//		* @return callable|null The old value of the mTagHooks array associated with the hook
//		*/
//		public function setTransparentTagHook($tag, $callback) {
//			$tag = strtolower($tag);
//			if (preg_match('/[<>\r\n]/', $tag, $m)) {
//				throw new MWException("Invalid character {$m[0]} in setTransparentHook('$tag', ...) call");
//			}
//			$oldVal = isset(this.mTransparentTagHooks[$tag]) ? this.mTransparentTagHooks[$tag] : null;
//			this.mTransparentTagHooks[$tag] = $callback;
//
//			return $oldVal;
//		}
//
//		/**
//		* Remove all tag hooks
//		*/
//		public function clearTagHooks() {
//			this.mTagHooks = [];
//			this.mFunctionTagHooks = [];
//			this.mStripList = this.mDefaultStripList;
//		}
//
//		/**
//		* Create a function, e.g. {{sum:1|2|3}}
//		* The callback function should have the form:
//		*    function myParserFunction(&$parser, $arg1, $arg2, $arg3) { ... }
//		*
//		* Or with Parser::SFH_OBJECT_ARGS:
//		*    function myParserFunction($parser, $frame, $args) { ... }
//		*
//		* The callback may either return the text result of the function, or an array with the text
//		* in element 0, and a number of flags in the other elements. The names of the flags are
//		* specified in the keys. Valid flags are:
//		*   found                     The text returned is valid, stop processing the template. This
//		*                             is on by default.
//		*   nowiki                    Wiki markup in the return value should be escaped
//		*   isHTML                    The returned text is HTML, armour it against wikitext transformation
//		*
//		* @param String $id The magic word ID
//		* @param callable $callback The callback function (and Object) to use
//		* @param int $flags A combination of the following flags:
//		*     Parser::SFH_NO_HASH      No leading hash, i.e. {{plural:...}} instead of {{#if:...}}
//		*
//		*     Parser::SFH_OBJECT_ARGS  Pass the template arguments as PPNode objects instead of text.
//		*     This allows for conditional expansion of the parse tree, allowing you to eliminate dead
//		*     branches and thus speed up parsing. It is also possible to analyse the parse tree of
//		*     the arguments, and to control the way they are expanded.
//		*
//		*     The $frame parameter is a PPFrame. This can be used to produce expanded text from the
//		*     arguments, for instance:
//		*         $text = isset($args[0]) ? $frame->expand($args[0]) : '';
//		*
//		*     For technical reasons, $args[0] is pre-expanded and will be a String. This may change in
//		*     future versions. Please call $frame->expand() on it anyway so that your code keeps
//		*     working if/when this is changed.
//		*
//		*     If you want whitespace to be trimmed from $args, you need to do it yourself, post-
//		*     expansion.
//		*
//		*     Please read the documentation in includes/parser/Preprocessor.php for more information
//		*     about the methods available in PPFrame and PPNode.
//		*
//		* @throws MWException
//		* @return String|callable The old callback function for this name, if any
//		*/
//		public function setFunctionHook($id, $callback, $flags = 0) {
//			global $wgContLang;
//
//			$oldVal = isset(this.mFunctionHooks[$id]) ? this.mFunctionHooks[$id][0] : null;
//			this.mFunctionHooks[$id] = [ $callback, $flags ];
//
//			# Add to function cache
//			$mw = MagicWord::get($id);
//			if (!$mw) {
//				throw new MWException(__METHOD__ . '() expecting a magic word identifier.');
//			}
//
//			$synonyms = $mw->getSynonyms();
//			$sensitive = intval($mw->isCaseSensitive());
//
//			foreach ($synonyms as $syn) {
//				# Case
//				if (!$sensitive) {
//					$syn = $wgContLang->lc($syn);
//				}
//				# Add leading hash
//				if (!($flags & self::SFH_NO_HASH)) {
//					$syn = '#' . $syn;
//				}
//				# Remove trailing colon
//				if (substr($syn, -1, 1) === ':') {
//					$syn = substr($syn, 0, -1);
//				}
//				this.mFunctionSynonyms[$sensitive][$syn] = $id;
//			}
//			return $oldVal;
//		}
//
//		/**
//		* Get all registered function hook identifiers
//		*
//		* @return array
//		*/
//		public function getFunctionHooks() {
//			return array_keys(this.mFunctionHooks);
//		}
//
//		/**
//		* Create a tag function, e.g. "<test>some stuff</test>".
//		* Unlike tag hooks, tag functions are parsed at preprocessor level.
//		* Unlike parser functions, their content is not preprocessed.
//		* @param String $tag
//		* @param callable $callback
//		* @param int $flags
//		* @throws MWException
//		* @return null
//		*/
//		public function setFunctionTagHook($tag, $callback, $flags) {
//			$tag = strtolower($tag);
//			if (preg_match('/[<>\r\n]/', $tag, $m)) {
//				throw new MWException("Invalid character {$m[0]} in setFunctionTagHook('$tag', ...) call");
//			}
//			$old = isset(this.mFunctionTagHooks[$tag]) ?
//				this.mFunctionTagHooks[$tag] : null;
//			this.mFunctionTagHooks[$tag] = [ $callback, $flags ];
//
//			if (!in_array($tag, this.mStripList)) {
//				this.mStripList[] = $tag;
//			}
//
//			return $old;
//		}
//
//		/**
//		* Replace "<!--LINK-->" link placeholders with actual links, in the buffer
//		* Placeholders created in Linker::link()
//		*
//		* @param String $text
//		* @param int $options
//		*/
//		public function replaceLinkHolders(&$text, $options = 0) {
//			this.mLinkHolders->replace($text);
//		}
//
//		/**
//		* Replace "<!--LINK-->" link placeholders with plain text of links
//		* (not HTML-formatted).
//		*
//		* @param String $text
//		* @return String
//		*/
//		public function replaceLinkHoldersText($text) {
//			return this.mLinkHolders->replaceText($text);
//		}
//
//		/**
//		* Renders an image gallery from a text with one line per image.
//		* text labels may be given by using |-style alternative text. E.g.
//		*   Image:one.jpg|The number "1"
//		*   Image:tree.jpg|A tree
//		* given as text will return the HTML of a gallery with two images,
//		* labeled 'The number "1"' and
//		* 'A tree'.
//		*
//		* @param String $text
//		* @param array $params
//		* @return String HTML
//		*/
//		public function renderImageGallery($text, $params) {
//
//			$mode = false;
//			if (isset($params['mode'])) {
//				$mode = $params['mode'];
//			}
//
//			try {
//				$ig = ImageGalleryBase::factory($mode);
//			} catch (Exception $e) {
//				// If invalid type set, fallback to default.
//				$ig = ImageGalleryBase::factory(false);
//			}
//
//			$ig->setContextTitle(this.mTitle);
//			$ig->setShowBytes(false);
//			$ig->setShowFilename(false);
//			$ig->setParser($this);
//			$ig->setHideBadImages();
//			$ig->setAttributes(Sanitizer::validateTagAttributes($params, 'table'));
//
//			if (isset($params['showfilename'])) {
//				$ig->setShowFilename(true);
//			} else {
//				$ig->setShowFilename(false);
//			}
//			if (isset($params['caption'])) {
//				$caption = $params['caption'];
//				$caption = htmlspecialchars($caption);
//				$caption = this.replaceInternalLinks($caption);
//				$ig->setCaptionHtml($caption);
//			}
//			if (isset($params['perrow'])) {
//				$ig->setPerRow($params['perrow']);
//			}
//			if (isset($params['widths'])) {
//				$ig->setWidths($params['widths']);
//			}
//			if (isset($params['heights'])) {
//				$ig->setHeights($params['heights']);
//			}
//			$ig->setAdditionalOptions($params);
//
//			Hooks::run('BeforeParserrenderImageGallery', [ &$this, &$ig ]);
//
//			$lines = StringUtils::explode("\n", $text);
//			foreach ($lines as $line) {
//				# match lines like these:
//				# Image:someimage.jpg|This is some image
//				$matches = [];
//				preg_match("/^([^|]+)(\\|(.*))?$/", $line, $matches);
//				# Skip empty lines
//				if (count($matches) == 0) {
//					continue;
//				}
//
//				if (strpos($matches[0], '%') !== false) {
//					$matches[1] = rawurldecode($matches[1]);
//				}
//				$title = Title::newFromText($matches[1], NS_FILE);
//				if (is_null($title)) {
//					# Bogus title. Ignore these so we don't bomb out later.
//					continue;
//				}
//
//				# We need to get what handler the file uses, to figure out parameters.
//				# Note, a hook can overide the file name, and chose an entirely different
//				# file (which potentially could be of a different type and have different handler).
//				$options = [];
//				$descQuery = false;
//				Hooks::run('BeforeParserFetchFileAndTitle',
//					[ $this, $title, &$options, &$descQuery ]);
//				# Don't register it now, as TraditionalImageGallery does that later.
//				$file = this.fetchFileNoRegister($title, $options);
//				$handler = $file ? $file->getHandler() : false;
//
//				$paramMap = [
//					'img_alt' => 'gallery-@gplx.Internal protected-alt',
//					'img_link' => 'gallery-@gplx.Internal protected-link',
//				];
//				if ($handler) {
//					$paramMap = $paramMap + $handler->getParamMap();
//					// We don't want people to specify per-image widths.
//					// Additionally the width parameter would need special casing anyhow.
//					unset($paramMap['img_width']);
//				}
//
//				$mwArray = new MagicWordArray(array_keys($paramMap));
//
//				$label = '';
//				$alt = '';
//				$link = '';
//				$handlerOptions = [];
//				if (isset($matches[3])) {
//					// look for an |alt= definition while trying not to break existing
//					// captions with multiple pipes (|) in it, until a more sensible grammar
//					// is defined for images in galleries
//
//					// FIXME: Doing recursiveTagParse at this stage, and the trim before
//					// splitting on '|' is a bit odd, and different from makeImage.
//					$matches[3] = this.recursiveTagParse(trim($matches[3]));
//					// Protect LanguageConverter markup
//					$parameterMatches = StringUtils::delimiterExplode(
//						'-{', '}-', '|', $matches[3], true /* nested */
//					);
//
//					foreach ($parameterMatches as $parameterMatch) {
//						list($magicName, $match) = $mwArray->matchVariableStartToEnd($parameterMatch);
//						if ($magicName) {
//							$paramName = $paramMap[$magicName];
//
//							switch ($paramName) {
//							case 'gallery-@gplx.Internal protected-alt':
//								$alt = this.stripAltText($match, false);
//								break;
//							case 'gallery-@gplx.Internal protected-link':
//								$linkValue = strip_tags(this.replaceLinkHoldersText($match));
//								$chars = self::EXT_LINK_URL_CLASS;
//								$addr = self::EXT_LINK_ADDR;
//								$prots = this.mUrlProtocols;
//								// check to see if link matches an absolute url, if not then it must be a wiki link.
//								if (preg_match('/^-{R|(.*)}-$/', $linkValue)) {
//									// Result of LanguageConverter::markNoConversion
//									// invoked on an external link.
//									$linkValue = substr($linkValue, 4, -2);
//								}
//								if (preg_match("/^($prots)$addr$chars*$/u", $linkValue)) {
//									$link = $linkValue;
//								} else {
//									$localLinkTitle = Title::newFromText($linkValue);
//									if ($localLinkTitle !== null) {
//										$link = $localLinkTitle->getLinkURL();
//									}
//								}
//								break;
//							default:
//								// Must be a handler specific parameter.
//								if ($handler->validateParam($paramName, $match)) {
//									$handlerOptions[$paramName] = $match;
//								} else {
//									// Guess not, consider it as caption.
//									wfDebug("$parameterMatch failed parameter validation\n");
//									$label = '|' . $parameterMatch;
//								}
//							}
//
//						} else {
//							// Last pipe wins.
//							$label = '|' . $parameterMatch;
//						}
//					}
//					// Remove the pipe.
//					$label = substr($label, 1);
//				}
//
//				$ig->add($title, $label, $alt, $link, $handlerOptions);
//			}
//			$html = $ig->toHTML();
//			Hooks::run('AfterParserFetchFileAndTitle', [ $this, $ig, &$html ]);
//			return $html;
//		}
//
//		/**
//		* @param MediaHandler $handler
//		* @return array
//		*/
//		public function getImageParams($handler) {
//			if ($handler) {
//				$handlerClass = get_class($handler);
//			} else {
//				$handlerClass = '';
//			}
//			if (!isset(this.mImageParams[$handlerClass])) {
//				# Initialise static lists
//				static $internalParamNames = [
//					'horizAlign' => [ 'left', 'right', 'center', 'none' ],
//					'vertAlign' => [ 'baseline', 'sub', 'super', 'top', 'text-top', 'middle',
//						'bottom', 'text-bottom' ],
//					'frame' => [ 'thumbnail', 'manualthumb', 'framed', 'frameless',
//						'upright', 'border', 'link', 'alt', 'class' ],
//				];
//				static $internalParamMap;
//				if (!$internalParamMap) {
//					$internalParamMap = [];
//					foreach ($internalParamNames as $type => $names) {
//						foreach ($names as $name) {
//							$magicName = str_replace('-', '_', "img_$name");
//							$internalParamMap[$magicName] = [ $type, $name ];
//						}
//					}
//				}
//
//				# Add handler params
//				$paramMap = $internalParamMap;
//				if ($handler) {
//					$handlerParamMap = $handler->getParamMap();
//					foreach ($handlerParamMap as $magic => $paramName) {
//						$paramMap[$magic] = [ 'handler', $paramName ];
//					}
//				}
//				this.mImageParams[$handlerClass] = $paramMap;
//				this.mImageParamsMagicArray[$handlerClass] = new MagicWordArray(array_keys($paramMap));
//			}
//			return [ this.mImageParams[$handlerClass], this.mImageParamsMagicArray[$handlerClass] ];
//		}
//
//		/**
//		* Parse image options text and use it to make an image
//		*
//		* @param Title $title
//		* @param String $options
//		* @param LinkHolderArray|boolean $holders
//		* @return String HTML
//		*/
//		public function makeImage($title, $options, $holders = false) {
//			# Check if the options text is of the form "options|alt text"
//			# Options are:
//			#  * thumbnail  make a thumbnail with enlarge-icon and caption, alignment depends on lang
//			#  * left       no resizing, just left align. label is used for alt= only
//			#  * right      same, but right aligned
//			#  * none       same, but not aligned
//			#  * ___px      scale to ___ pixels width, no aligning. e.g. use in taxobox
//			#  * center     center the image
//			#  * frame      Keep original image size, no magnify-button.
//			#  * framed     Same as "frame"
//			#  * frameless  like 'thumb' but without a frame. Keeps user preferences for width
//			#  * upright    reduce width for upright images, rounded to full __0 px
//			#  * border     draw a 1px border around the image
//			#  * alt        Text for HTML alt attribute (defaults to empty)
//			#  * class      Set a class for img node
//			#  * link       Set the target of the image link. Can be external, interwiki, or local
//			# vertical-align values (no % or length right now):
//			#  * baseline
//			#  * sub
//			#  * super
//			#  * top
//			#  * text-top
//			#  * middle
//			#  * bottom
//			#  * text-bottom
//
//			# Protect LanguageConverter markup when splitting into parts
//			$parts = StringUtils::delimiterExplode(
//				'-{', '}-', '|', $options, true /* allow nesting */
//			);
//
//			# Give extensions a chance to select the file revision for us
//			$options = [];
//			$descQuery = false;
//			Hooks::run('BeforeParserFetchFileAndTitle',
//				[ $this, $title, &$options, &$descQuery ]);
//			# Fetch and register the file (file title may be different via hooks)
//			list($file, $title) = this.fetchFileAndTitle($title, $options);
//
//			# Get parameter map
//			$handler = $file ? $file->getHandler() : false;
//
//			list($paramMap, $mwArray) = this.getImageParams($handler);
//
//			if (!$file) {
//				this.addTrackingCategory('broken-file-category');
//			}
//
//			# Process the input parameters
//			$caption = '';
//			$params = [ 'frame' => [], 'handler' => [],
//				'horizAlign' => [], 'vertAlign' => [] ];
//			$seenformat = false;
//			foreach ($parts as $part) {
//				$part = trim($part);
//				list($magicName, $value) = $mwArray->matchVariableStartToEnd($part);
//				$validated = false;
//				if (isset($paramMap[$magicName])) {
//					list($type, $paramName) = $paramMap[$magicName];
//
//					# Special case; width and height come in one variable together
//					if ($type === 'handler' && $paramName === 'width') {
//						$parsedWidthParam = this.parseWidthParam($value);
//						if (isset($parsedWidthParam['width'])) {
//							$width = $parsedWidthParam['width'];
//							if ($handler->validateParam('width', $width)) {
//								$params[$type]['width'] = $width;
//								$validated = true;
//							}
//						}
//						if (isset($parsedWidthParam['height'])) {
//							$height = $parsedWidthParam['height'];
//							if ($handler->validateParam('height', $height)) {
//								$params[$type]['height'] = $height;
//								$validated = true;
//							}
//						}
//						# else no validation -- T15436
//					} else {
//						if ($type === 'handler') {
//							# Validate handler parameter
//							$validated = $handler->validateParam($paramName, $value);
//						} else {
//							# Validate @gplx.Internal protected parameters
//							switch ($paramName) {
//							case 'manualthumb':
//							case 'alt':
//							case 'class':
//								# @todo FIXME: Possibly check validity here for
//								# manualthumb? downstream behavior seems odd with
//								# missing manual thumbs.
//								$validated = true;
//								$value = this.stripAltText($value, $holders);
//								break;
//							case 'link':
//								$chars = self::EXT_LINK_URL_CLASS;
//								$addr = self::EXT_LINK_ADDR;
//								$prots = this.mUrlProtocols;
//								if ($value === '') {
//									$paramName = 'no-link';
//									$value = true;
//									$validated = true;
//								} elseif (preg_match("/^((?i)$prots)/", $value)) {
//									if (preg_match("/^((?i)$prots)$addr$chars*$/u", $value, $m)) {
//										$paramName = 'link-url';
//										this.mOutput->addExternalLink($value);
//										if (this.mOptions->getExternalLinkTarget()) {
//											$params[$type]['link-target'] = this.mOptions->getExternalLinkTarget();
//										}
//										$validated = true;
//									}
//								} else {
//									$linkTitle = Title::newFromText($value);
//									if ($linkTitle) {
//										$paramName = 'link-title';
//										$value = $linkTitle;
//										this.mOutput->addLink($linkTitle);
//										$validated = true;
//									}
//								}
//								break;
//							case 'frameless':
//							case 'framed':
//							case 'thumbnail':
//								// use first appearing option, discard others.
//								$validated = !$seenformat;
//								$seenformat = true;
//								break;
//							default:
//								# Most other things appear to be empty or numeric...
//								$validated = ($value === false || is_numeric(trim($value)));
//							}
//						}
//
//						if ($validated) {
//							$params[$type][$paramName] = $value;
//						}
//					}
//				}
//				if (!$validated) {
//					$caption = $part;
//				}
//			}
//
//			# Process alignment parameters
//			if ($params['horizAlign']) {
//				$params['frame']['align'] = key($params['horizAlign']);
//			}
//			if ($params['vertAlign']) {
//				$params['frame']['valign'] = key($params['vertAlign']);
//			}
//
//			$params['frame']['caption'] = $caption;
//
//			# Will the image be presented in a frame, with the caption below?
//			$imageIsFramed = isset($params['frame']['frame'])
//				|| isset($params['frame']['framed'])
//				|| isset($params['frame']['thumbnail'])
//				|| isset($params['frame']['manualthumb']);
//
//			# In the old days, [[Image:Foo|text...]] would set alt text.  Later it
//			# came to also set the caption, ordinary text after the image -- which
//			# makes no sense, because that just repeats the text multiple times in
//			# screen readers.  It *also* came to set the title attribute.
//			# Now that we have an alt attribute, we should not set the alt text to
//			# equal the caption: that's worse than useless, it just repeats the
//			# text.  This is the framed/thumbnail case.  If there's no caption, we
//			# use the unnamed parameter for alt text as well, just for the time be-
//			# ing, if the unnamed param is set and the alt param is not.
//			# For the future, we need to figure out if we want to tweak this more,
//			# e.g., introducing a title= parameter for the title; ignoring the un-
//			# named parameter entirely for images without a caption; adding an ex-
//			# plicit caption= parameter and preserving the old magic unnamed para-
//			# meter for BC; ...
//			if ($imageIsFramed) { # Framed image
//				if ($caption === '' && !isset($params['frame']['alt'])) {
//					# No caption or alt text, add the filename as the alt text so
//					# that screen readers at least get some description of the image
//					$params['frame']['alt'] = $title->getText();
//				}
//				# Do not set $params['frame']['title'] because tooltips don't make sense
//				# for framed images
//			} else { # Inline image
//				if (!isset($params['frame']['alt'])) {
//					# No alt text, use the "caption" for the alt text
//					if ($caption !== '') {
//						$params['frame']['alt'] = this.stripAltText($caption, $holders);
//					} else {
//						# No caption, fall back to using the filename for the
//						# alt text
//						$params['frame']['alt'] = $title->getText();
//					}
//				}
//				# Use the "caption" for the tooltip text
//				$params['frame']['title'] = this.stripAltText($caption, $holders);
//			}
//
//			Hooks::run('ParserMakeImageParams', [ $title, $file, &$params, $this ]);
//
//			# Linker does the rest
//			$time = isset($options['time']) ? $options['time'] : false;
//			$ret = Linker::makeImageLink($this, $title, $file, $params['frame'], $params['handler'],
//				$time, $descQuery, this.mOptions->getThumbSize());
//
//			# Give the handler a chance to modify the parser Object
//			if ($handler) {
//				$handler->parserTransformHook($this, $file);
//			}
//
//			return $ret;
//		}
//
//		/**
//		* @param String $caption
//		* @param LinkHolderArray|boolean $holders
//		* @return mixed|String
//		*/
//		protected function stripAltText($caption, $holders) {
//			# Strip bad stuff out of the title (tooltip).  We can't just use
//			# replaceLinkHoldersText() here, because if this function is called
//			# from replaceInternalLinks2(), mLinkHolders won't be up-to-date.
//			if ($holders) {
//				$tooltip = $holders->replaceText($caption);
//			} else {
//				$tooltip = this.replaceLinkHoldersText($caption);
//			}
//
//			# make sure there are no placeholders in thumbnail attributes
//			# that are later expanded to html- so expand them now and
//			# remove the tags
//			$tooltip = this.mStripState->unstripBoth($tooltip);
//			$tooltip = Sanitizer::stripAllTags($tooltip);
//
//			return $tooltip;
//		}
//
//		/**
//		* Set a flag in the output Object indicating that the content is dynamic and
//		* shouldn't be cached.
//		* @deprecated since 1.28; use getOutput()->updateCacheExpiry()
//		*/
//		public function disableCache() {
//			wfDebug("Parser output marked as uncacheable.\n");
//			if (!this.mOutput) {
//				throw new MWException(__METHOD__ .
//					" can only be called when actually parsing something");
//			}
//			this.mOutput->updateCacheExpiry(0); // new style, for consistency
//		}
//
//		/**
//		* Callback from the Sanitizer for expanding items found in HTML attribute
//		* values, so they can be safely tested and escaped.
//		*
//		* @param String $text
//		* @param boolean|PPFrame $frame
//		* @return String
//		*/
//		public function attributeStripCallback(&$text, $frame = false) {
//			$text = this.replaceVariables($text, $frame);
//			$text = this.mStripState->unstripBoth($text);
//			return $text;
//		}
//
//		/**
//		* Accessor
//		*
//		* @return array
//		*/
//		public function getTags() {
//			return array_merge(
//				array_keys(this.mTransparentTagHooks),
//				array_keys(this.mTagHooks),
//				array_keys(this.mFunctionTagHooks)
//			);
//		}
//
//		/**
//		* Replace transparent tags in $text with the values given by the callbacks.
//		*
//		* Transparent tag hooks are like regular XML-style tag hooks, except they
//		* operate late in the transformation sequence, on HTML instead of wikitext.
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function replaceTransparentTags($text) {
//			$matches = [];
//			$elements = array_keys(this.mTransparentTagHooks);
//			$text = self::extractTagsAndParams($elements, $text, $matches);
//			$replacements = [];
//
//			foreach ($matches as $marker => $data) {
//				list($element, $content, $params, $tag) = $data;
//				$tagName = strtolower($element);
//				if (isset(this.mTransparentTagHooks[$tagName])) {
//					$output = call_user_func_array(
//						this.mTransparentTagHooks[$tagName],
//						[ $content, $params, $this ]
//					);
//				} else {
//					$output = $tag;
//				}
//				$replacements[$marker] = $output;
//			}
//			return strtr($text, $replacements);
//		}
//
//		/**
//		* Break wikitext input into sections, and either pull or replace
//		* some particular section's text.
//		*
//		* External callers should use the getSection and replaceSection methods.
//		*
//		* @param String $text Page wikitext
//		* @param String|int $sectionId A section identifier String of the form:
//		*   "<flag1> - <flag2> - ... - <section number>"
//		*
//		* Currently the only recognised flag is "T", which means the target section number
//		* was derived during a template inclusion parse, in other words this is a template
//		* section edit link. If no flags are given, it was an ordinary section edit link.
//		* This flag is required to avoid a section numbering mismatch when a section is
//		* enclosed by "<includeonly>" (T8563).
//		*
//		* The section number 0 pulls the text before the first heading; other numbers will
//		* pull the given section along with its lower-level subsections. If the section is
//		* not found, $mode=get will return $newtext, and $mode=replace will return $text.
//		*
//		* Section 0 is always considered to exist, even if it only contains the empty
//		* String. If $text is the empty String and section 0 is replaced, $newText is
//		* returned.
//		*
//		* @param String $mode One of "get" or "replace"
//		* @param String $newText Replacement text for section data.
//		* @return String For "get", the extracted section text.
//		*   for "replace", the whole page with the section replaced.
//		*/
//		private function extractSections($text, $sectionId, $mode, $newText = '') {
//			global $wgTitle; # not generally used but removes an ugly failure mode
//
//			$magicScopeVariable = this.synchronized();
//			this.startParse($wgTitle, new ParserOptions, self::OT_PLAIN, true);
//			$outText = '';
//			$frame = this.getPreprocessor()->newFrame();
//
//			# Process section extraction flags
//			$flags = 0;
//			$sectionParts = explode('-', $sectionId);
//			$sectionIndex = array_pop($sectionParts);
//			foreach ($sectionParts as $part) {
//				if ($part === 'T') {
//					$flags |= self::PTD_FOR_INCLUSION;
//				}
//			}
//
//			# Check for empty input
//			if (strval($text) === '') {
//				# Only sections 0 and T-0 exist in an empty document
//				if ($sectionIndex == 0) {
//					if ($mode === 'get') {
//						return '';
//					} else {
//						return $newText;
//					}
//				} else {
//					if ($mode === 'get') {
//						return $newText;
//					} else {
//						return $text;
//					}
//				}
//			}
//
//			# Preprocess the text
//			$root = this.preprocessToDom($text, $flags);
//
//			# <h> nodes indicate section breaks
//			# They can only occur at the top level, so we can find them by iterating the root's children
//			$node = $root->getFirstChild();
//
//			# Find the target section
//			if ($sectionIndex == 0) {
//				# Section zero doesn't nest, level=big
//				$targetLevel = 1000;
//			} else {
//				while ($node) {
//					if ($node->getName() === 'h') {
//						$bits = $node->splitHeading();
//						if ($bits['i'] == $sectionIndex) {
//							$targetLevel = $bits['level'];
//							break;
//						}
//					}
//					if ($mode === 'replace') {
//						$outText .= $frame->expand($node, PPFrame::RECOVER_ORIG);
//					}
//					$node = $node->getNextSibling();
//				}
//			}
//
//			if (!$node) {
//				# Not found
//				if ($mode === 'get') {
//					return $newText;
//				} else {
//					return $text;
//				}
//			}
//
//			# Find the end of the section, including nested sections
//			do {
//				if ($node->getName() === 'h') {
//					$bits = $node->splitHeading();
//					$curLevel = $bits['level'];
//					if ($bits['i'] != $sectionIndex && $curLevel <= $targetLevel) {
//						break;
//					}
//				}
//				if ($mode === 'get') {
//					$outText .= $frame->expand($node, PPFrame::RECOVER_ORIG);
//				}
//				$node = $node->getNextSibling();
//			} while ($node);
//
//			# Write out the remainder (in replace mode only)
//			if ($mode === 'replace') {
//				# Output the replacement text
//				# Add two newlines on -- trailing whitespace in $newText is conventionally
//				# stripped by the editor, so we need both newlines to restore the paragraph gap
//				# Only add trailing whitespace if there is newText
//				if ($newText != "") {
//					$outText .= $newText . "\n\n";
//				}
//
//				while ($node) {
//					$outText .= $frame->expand($node, PPFrame::RECOVER_ORIG);
//					$node = $node->getNextSibling();
//				}
//			}
//
//			if (is_string($outText)) {
//				# Re-insert stripped tags
//				$outText = rtrim(this.mStripState->unstripBoth($outText));
//			}
//
//			return $outText;
//		}
//
//		/**
//		* This function returns the text of a section, specified by a number ($section).
//		* A section is text under a heading like == Heading == or \<h1\>Heading\</h1\>, or
//		* the first section before any such heading (section 0).
//		*
//		* If a section contains subsections, these are also returned.
//		*
//		* @param String $text Text to look in
//		* @param String|int $sectionId Section identifier as a number or String
//		* (e.g. 0, 1 or 'T-1').
//		* @param String $defaultText Default to return if section is not found
//		*
//		* @return String Text of the requested section
//		*/
//		public function getSection($text, $sectionId, $defaultText = '') {
//			return this.extractSections($text, $sectionId, 'get', $defaultText);
//		}
//
//		/**
//		* This function returns $oldtext after the content of the section
//		* specified by $section has been replaced with $text. If the target
//		* section does not exist, $oldtext is returned unchanged.
//		*
//		* @param String $oldText Former text of the article
//		* @param String|int $sectionId Section identifier as a number or String
//		* (e.g. 0, 1 or 'T-1').
//		* @param String $newText Replacing text
//		*
//		* @return String Modified text
//		*/
//		public function replaceSection($oldText, $sectionId, $newText) {
//			return this.extractSections($oldText, $sectionId, 'replace', $newText);
//		}
//
//		/**
//		* Get the ID of the revision we are parsing
//		*
//		* @return int|null
//		*/
//		public function getRevisionId() {
//			return this.mRevisionId;
//		}
//
//		/**
//		* Get the revision Object for this.mRevisionId
//		*
//		* @return Revision|null Either a Revision Object or null
//		* @since 1.23 (public since 1.23)
//		*/
//		public function getRevisionObject() {
//			if (!is_null(this.mRevisionObject)) {
//				return this.mRevisionObject;
//			}
//			if (is_null(this.mRevisionId)) {
//				return null;
//			}
//
//			$rev = call_user_func(
//				this.mOptions->getCurrentRevisionCallback(), this.getTitle(), $this
//			);
//
//			# If the parse is for a new revision, then the callback should have
//			# already been set to force the Object and should match mRevisionId.
//			# If not, try to fetch by mRevisionId for sanity.
//			if ($rev && $rev->getId() != this.mRevisionId) {
//				$rev = Revision::newFromId(this.mRevisionId);
//			}
//
//			this.mRevisionObject = $rev;
//
//			return this.mRevisionObject;
//		}
//
//		/**
//		* Get the timestamp associated with the current revision, adjusted for
//		* the default server-local timestamp
//		* @return String
//		*/
//		public function getRevisionTimestamp() {
//			if (is_null(this.mRevisionTimestamp)) {
//				global $wgContLang;
//
//				$revObject = this.getRevisionObject();
//				$timestamp = $revObject ? $revObject->getTimestamp() : wfTimestampNow();
//
//				# The cryptic '' timezone parameter tells to use the site-default
//				# timezone offset instead of the user settings.
//				# Since this value will be saved into the parser cache, served
//				# to other users, and potentially even used inside links and such,
//				# it needs to be consistent for all visitors.
//				this.mRevisionTimestamp = $wgContLang->userAdjust($timestamp, '');
//
//			}
//			return this.mRevisionTimestamp;
//		}
//
//		/**
//		* Get the name of the user that edited the last revision
//		*
//		* @return String User name
//		*/
//		public function getRevisionUser() {
//			if (is_null(this.mRevisionUser)) {
//				$revObject = this.getRevisionObject();
//
//				# if this template is subst: the revision id will be blank,
//				# so just use the current user's name
//				if ($revObject) {
//					this.mRevisionUser = $revObject->getUserText();
//				} elseif (this.ot['wiki'] || this.mOptions->getIsPreview()) {
//					this.mRevisionUser = this.getUser()->getName();
//				}
//			}
//			return this.mRevisionUser;
//		}
//
//		/**
//		* Get the size of the revision
//		*
//		* @return int|null Revision size
//		*/
//		public function getRevisionSize() {
//			if (is_null(this.mRevisionSize)) {
//				$revObject = this.getRevisionObject();
//
//				# if this variable is subst: the revision id will be blank,
//				# so just use the parser input size, because the own substituation
//				# will change the size.
//				if ($revObject) {
//					this.mRevisionSize = $revObject->getSize();
//				} else {
//					this.mRevisionSize = this.mInputSize;
//				}
//			}
//			return this.mRevisionSize;
//		}
//
//		/**
//		* Mutator for $mDefaultSort
//		*
//		* @param String $sort New value
//		*/
//		public function setDefaultSort($sort) {
//			this.mDefaultSort = $sort;
//			this.mOutput->setProperty('defaultsort', $sort);
//		}
//
//		/**
//		* Accessor for $mDefaultSort
//		* Will use the empty String if none is set.
//		*
//		* This value is treated as a prefix, so the
//		* empty String is equivalent to sorting by
//		* page name.
//		*
//		* @return String
//		*/
//		public function getDefaultSort() {
//			if (this.mDefaultSort !== false) {
//				return this.mDefaultSort;
//			} else {
//				return '';
//			}
//		}
//
//		/**
//		* Accessor for $mDefaultSort
//		* Unlike getDefaultSort(), will return false if none is set
//		*
//		* @return String|boolean
//		*/
//		public function getCustomDefaultSort() {
//			return this.mDefaultSort;
//		}
//
//		/**
//		* Try to guess the section anchor name based on a wikitext fragment
//		* presumably extracted from a heading, for example "Header" from
//		* "== Header ==".
//		*
//		* @param String $text
//		*
//		* @return String
//		*/
//		public function guessSectionNameFromWikiText($text) {
//			# Strip out wikitext links(they break the anchor)
//			$text = this.stripSectionName($text);
//			$text = Sanitizer::normalizeSectionNameWhitespace($text);
//			return '#' . Sanitizer::escapeId($text, 'noninitial');
//		}
//
//		/**
//		* Same as guessSectionNameFromWikiText(), but produces legacy anchors
//		* instead.  For use in redirects, since IE6 interprets Redirect: headers
//		* as something other than UTF-8 (apparently?), resulting in breakage.
//		*
//		* @param String $text The section name
//		* @return String An anchor
//		*/
//		public function guessLegacySectionNameFromWikiText($text) {
//			# Strip out wikitext links(they break the anchor)
//			$text = this.stripSectionName($text);
//			$text = Sanitizer::normalizeSectionNameWhitespace($text);
//			return '#' . Sanitizer::escapeId($text, [ 'noninitial', 'legacy' ]);
//		}
//
//		/**
//		* Strips a text String of wikitext for use in a section anchor
//		*
//		* Accepts a text String and then removes all wikitext from the
//		* String and leaves only the resultant text (i.e. the result of
//		* [[User:WikiSysop|Sysop]] would be "Sysop" and the result of
//		* [[User:WikiSysop]] would be "User:WikiSysop") - this is intended
//		* to create valid section anchors by mimicing the output of the
//		* parser when headings are parsed.
//		*
//		* @param String $text Text String to be stripped of wikitext
//		* for use in a Section anchor
//		* @return String Filtered text String
//		*/
//		public function stripSectionName($text) {
//			# Strip @gplx.Internal protected link markup
//			$text = preg_replace('/\[\[:?([^[|]+)\|([^[]+)\]\]/', '$2', $text);
//			$text = preg_replace('/\[\[:?([^[]+)\|?\]\]/', '$1', $text);
//
//			# Strip external link markup
//			# @todo FIXME: Not tolerant to blank link text
//			# I.E. [https://www.mediawiki.org] will render as [1] or something depending
//			# on how many empty links there are on the page - need to figure that out.
//			$text = preg_replace('/\[(?i:' . this.mUrlProtocols . ')([^ ]+?) ([^[]+)\]/', '$2', $text);
//
//			# Parse wikitext quotes (italics & bold)
//			$text = this.doQuotes($text);
//
//			# Strip HTML tags
//			$text = StringUtils::delimiterReplace('<', '>', '', $text);
//			return $text;
//		}
//
//		/**
//		* strip/replaceVariables/unstrip for preprocessor regression testing
//		*
//		* @param String $text
//		* @param Title $title
//		* @param ParserOptions $options
//		* @param int $outputType
//		*
//		* @return String
//		*/
//		public function testSrvus($text, Title $title, ParserOptions $options,
//			$outputType = self::OT_HTML
//		) {
//			$magicScopeVariable = this.synchronized();
//			this.startParse($title, $options, $outputType, true);
//
//			$text = this.replaceVariables($text);
//			$text = this.mStripState->unstripBoth($text);
//			$text = Sanitizer::removeHTMLtags($text);
//			return $text;
//		}
//
//		/**
//		* @param String $text
//		* @param Title $title
//		* @param ParserOptions $options
//		* @return String
//		*/
//		public function testPst($text, Title $title, ParserOptions $options) {
//			return this.preSaveTransform($text, $title, $options->getUser(), $options);
//		}
//
//		/**
//		* @param String $text
//		* @param Title $title
//		* @param ParserOptions $options
//		* @return String
//		*/
//		public function testPreprocess($text, Title $title, ParserOptions $options) {
//			return this.testSrvus($text, $title, $options, self::OT_PREPROCESS);
//		}
//
//		/**
//		* Call a callback function on all regions of the given text that are not
//		* inside strip markers, and replace those regions with the return value
//		* of the callback. For example, with input:
//		*
//		*  aaa<MARKER>bbb
//		*
//		* This will call the callback function twice, with 'aaa' and 'bbb'. Those
//		* two strings will be replaced with the value returned by the callback in
//		* each case.
//		*
//		* @param String $s
//		* @param callable $callback
//		*
//		* @return String
//		*/
//		public function markerSkipCallback($s, $callback) {
//			$i = 0;
//			$out = '';
//			while ($i < strlen($s)) {
//				$markerStart = strpos($s, self::MARKER_PREFIX, $i);
//				if ($markerStart === false) {
//					$out .= call_user_func($callback, substr($s, $i));
//					break;
//				} else {
//					$out .= call_user_func($callback, substr($s, $i, $markerStart - $i));
//					$markerEnd = strpos($s, self::MARKER_SUFFIX, $markerStart);
//					if ($markerEnd === false) {
//						$out .= substr($s, $markerStart);
//						break;
//					} else {
//						$markerEnd += strlen(self::MARKER_SUFFIX);
//						$out .= substr($s, $markerStart, $markerEnd - $markerStart);
//						$i = $markerEnd;
//					}
//				}
//			}
//			return $out;
//		}
//
//		/**
//		* Remove any strip markers found in the given text.
//		*
//		* @param String $text Input String
//		* @return String
//		*/
//		public function killMarkers($text) {
//			return this.mStripState->killMarkers($text);
//		}
//
//		/**
//		* Save the parser state required to convert the given half-parsed text to
//		* HTML. "Half-parsed" in this context means the output of
//		* recursiveTagParse() or internalParse(). This output has strip markers
//		* from replaceVariables (extensionSubstitution() etc.), and link
//		* placeholders from replaceLinkHolders().
//		*
//		* Returns an array which can be serialized and stored persistently. This
//		* array can later be loaded into another parser instance with
//		* unserializeHalfParsedText(). The text can then be safely incorporated into
//		* the return value of a parser hook.
//		*
//		* @param String $text
//		*
//		* @return array
//		*/
//		public function serializeHalfParsedText($text) {
//			$data = [
//				'text' => $text,
//				'version' => self::HALF_PARSED_VERSION,
//				'stripState' => this.mStripState->getSubState($text),
//				'linkHolders' => this.mLinkHolders->getSubArray($text)
//			];
//			return $data;
//		}
//
//		/**
//		* Load the parser state given in the $data array, which is assumed to
//		* have been generated by serializeHalfParsedText(). The text contents is
//		* extracted from the array, and its markers are transformed into markers
//		* appropriate for the current Parser instance. This transformed text is
//		* returned, and can be safely included in the return value of a parser
//		* hook.
//		*
//		* If the $data array has been stored persistently, the caller should first
//		* check whether it is still valid, by calling isValidHalfParsedText().
//		*
//		* @param array $data Serialized data
//		* @throws MWException
//		* @return String
//		*/
//		public function unserializeHalfParsedText($data) {
//			if (!isset($data['version']) || $data['version'] != self::HALF_PARSED_VERSION) {
//				throw new MWException(__METHOD__ . ': invalid version');
//			}
//
//			# First, extract the strip state.
//			$texts = [ $data['text'] ];
//			$texts = this.mStripState->merge($data['stripState'], $texts);
//
//			# Now renumber links
//			$texts = this.mLinkHolders->mergeForeign($data['linkHolders'], $texts);
//
//			# Should be good to go.
//			return $texts[0];
//		}
//
//		/**
//		* Returns true if the given array, presumed to be generated by
//		* serializeHalfParsedText(), is compatible with the current version of the
//		* parser.
//		*
//		* @param array $data
//		*
//		* @return boolean
//		*/
//		public function isValidHalfParsedText($data) {
//			return isset($data['version']) && $data['version'] == self::HALF_PARSED_VERSION;
//		}
//
//		/**
//		* Parsed a width param of imagelink like 300px or 200x300px
//		*
//		* @param String $value
//		*
//		* @return array
//		* @since 1.20
//		*/
//		public function parseWidthParam($value) {
//			$parsedWidthParam = [];
//			if ($value === '') {
//				return $parsedWidthParam;
//			}
//			$m = [];
//			# (T15500) In both cases (width/height and width only),
//			# permit trailing "px" for backward compatibility.
//			if (preg_match('/^([0-9]*)x([0-9]*)\s*(?:px)?\s*$/', $value, $m)) {
//				$width = intval($m[1]);
//				$height = intval($m[2]);
//				$parsedWidthParam['width'] = $width;
//				$parsedWidthParam['height'] = $height;
//			} elseif (preg_match('/^[0-9]*\s*(?:px)?\s*$/', $value)) {
//				$width = intval($value);
//				$parsedWidthParam['width'] = $width;
//			}
//			return $parsedWidthParam;
//		}
//
//		/**
//		* Lock the current instance of the parser.
//		*
//		* This is meant to stop someone from calling the parser
//		* recursively and messing up all the strip state.
//		*
//		* @throws MWException If parser is in a parse
//		* @return ScopedCallback The synchronized will be released once the return value goes out of scope.
//		*/
//		protected function synchronized() {
//			if (this.mInParse) {
//				throw new MWException("Parser state cleared while parsing. "
//					. "Did you call Parser::parse recursively?");
//			}
//			this.mInParse = true;
//
//			$recursiveCheck = new ScopedCallback(function() {
//				this.mInParse = false;
//			});
//
//			return $recursiveCheck;
//		}
//
//		/**
//		* Strip outer <p></p> tag from the HTML source of a single paragraph.
//		*
//		* Returns original HTML if the <p/> tag has any attributes, if there's no wrapping <p/> tag,
//		* or if there is more than one <p/> tag in the input HTML.
//		*
//		* @param String $html
//		* @return String
//		* @since 1.24
//		*/
//		public static function stripOuterParagraph($html) {
//			$m = [];
//			if (preg_match('/^<p>(.*)\n?<\/p>\n?$/sU', $html, $m)) {
//				if (strpos($m[1], '</p>') === false) {
//					$html = $m[1];
//				}
//			}
//
//			return $html;
//		}
//
//		/**
//		* Return this parser if it is not doing anything, otherwise
//		* get a fresh parser. You can use this method by doing
//		* $myParser = $wgParser->getFreshParser(), or more simply
//		* $wgParser->getFreshParser()->parse(...);
//		* if you're unsure if $wgParser is safe to use.
//		*
//		* @since 1.24
//		* @return Parser A parser Object that is not parsing anything
//		*/
//		public function getFreshParser() {
//			global $wgParserConf;
//			if (this.mInParse) {
//				return new $wgParserConf['class']($wgParserConf);
//			} else {
//				return $this;
//			}
//		}
//
//		/**
//		* Set's up the PHP implementation of OOUI for use in this request
//		* and instructs OutputPage to enable OOUI for itself.
//		*
//		* @since 1.26
//		*/
//		public function enableOOUI() {
//			OutputPage::setupOOUI();
//			this.mOutput->setEnableOOUI(true);
//		}
}