From 99c1d9af689e5325f3cf535c4007b3aeb8325229 Mon Sep 17 00:00:00 2001
From: Minteck <contact@minteck.org>
Date: Tue, 10 Jan 2023 14:54:04 +0100
Subject: Update - This is an automated commit

---
 school/node_modules/parse5/lib/parser/index.js | 2956 ++++++++++++++++++++++++
 1 file changed, 2956 insertions(+)
 create mode 100644 school/node_modules/parse5/lib/parser/index.js

(limited to 'school/node_modules/parse5/lib/parser/index.js')

diff --git a/school/node_modules/parse5/lib/parser/index.js b/school/node_modules/parse5/lib/parser/index.js
new file mode 100644
index 0000000..45d3e83
--- /dev/null
+++ b/school/node_modules/parse5/lib/parser/index.js
@@ -0,0 +1,2956 @@
+'use strict';
+
+const Tokenizer = require('../tokenizer');
+const OpenElementStack = require('./open-element-stack');
+const FormattingElementList = require('./formatting-element-list');
+const LocationInfoParserMixin = require('../extensions/location-info/parser-mixin');
+const ErrorReportingParserMixin = require('../extensions/error-reporting/parser-mixin');
+const Mixin = require('../utils/mixin');
+const defaultTreeAdapter = require('../tree-adapters/default');
+const mergeOptions = require('../utils/merge-options');
+const doctype = require('../common/doctype');
+const foreignContent = require('../common/foreign-content');
+const ERR = require('../common/error-codes');
+const unicode = require('../common/unicode');
+const HTML = require('../common/html');
+
+//Aliases
+const $ = HTML.TAG_NAMES;
+const NS = HTML.NAMESPACES;
+const ATTRS = HTML.ATTRS;
+
+const DEFAULT_OPTIONS = {
+    scriptingEnabled: true,
+    sourceCodeLocationInfo: false,
+    onParseError: null,
+    treeAdapter: defaultTreeAdapter
+};
+
+//Misc constants
+const HIDDEN_INPUT_TYPE = 'hidden';
+
+//Adoption agency loops iteration count
+const AA_OUTER_LOOP_ITER = 8;
+const AA_INNER_LOOP_ITER = 3;
+
+//Insertion modes
+const INITIAL_MODE = 'INITIAL_MODE';
+const BEFORE_HTML_MODE = 'BEFORE_HTML_MODE';
+const BEFORE_HEAD_MODE = 'BEFORE_HEAD_MODE';
+const IN_HEAD_MODE = 'IN_HEAD_MODE';
+const IN_HEAD_NO_SCRIPT_MODE = 'IN_HEAD_NO_SCRIPT_MODE';
+const AFTER_HEAD_MODE = 'AFTER_HEAD_MODE';
+const IN_BODY_MODE = 'IN_BODY_MODE';
+const TEXT_MODE = 'TEXT_MODE';
+const IN_TABLE_MODE = 'IN_TABLE_MODE';
+const IN_TABLE_TEXT_MODE = 'IN_TABLE_TEXT_MODE';
+const IN_CAPTION_MODE = 'IN_CAPTION_MODE';
+const IN_COLUMN_GROUP_MODE = 'IN_COLUMN_GROUP_MODE';
+const IN_TABLE_BODY_MODE = 'IN_TABLE_BODY_MODE';
+const IN_ROW_MODE = 'IN_ROW_MODE';
+const IN_CELL_MODE = 'IN_CELL_MODE';
+const IN_SELECT_MODE = 'IN_SELECT_MODE';
+const IN_SELECT_IN_TABLE_MODE = 'IN_SELECT_IN_TABLE_MODE';
+const IN_TEMPLATE_MODE = 'IN_TEMPLATE_MODE';
+const AFTER_BODY_MODE = 'AFTER_BODY_MODE';
+const IN_FRAMESET_MODE = 'IN_FRAMESET_MODE';
+const AFTER_FRAMESET_MODE = 'AFTER_FRAMESET_MODE';
+const AFTER_AFTER_BODY_MODE = 'AFTER_AFTER_BODY_MODE';
+const AFTER_AFTER_FRAMESET_MODE = 'AFTER_AFTER_FRAMESET_MODE';
+
+//Insertion mode reset map
+const INSERTION_MODE_RESET_MAP = {
+    [$.TR]: IN_ROW_MODE,
+    [$.TBODY]: IN_TABLE_BODY_MODE,
+    [$.THEAD]: IN_TABLE_BODY_MODE,
+    [$.TFOOT]: IN_TABLE_BODY_MODE,
+    [$.CAPTION]: IN_CAPTION_MODE,
+    [$.COLGROUP]: IN_COLUMN_GROUP_MODE,
+    [$.TABLE]: IN_TABLE_MODE,
+    [$.BODY]: IN_BODY_MODE,
+    [$.FRAMESET]: IN_FRAMESET_MODE
+};
+
+//Template insertion mode switch map
+const TEMPLATE_INSERTION_MODE_SWITCH_MAP = {
+    [$.CAPTION]: IN_TABLE_MODE,
+    [$.COLGROUP]: IN_TABLE_MODE,
+    [$.TBODY]: IN_TABLE_MODE,
+    [$.TFOOT]: IN_TABLE_MODE,
+    [$.THEAD]: IN_TABLE_MODE,
+    [$.COL]: IN_COLUMN_GROUP_MODE,
+    [$.TR]: IN_TABLE_BODY_MODE,
+    [$.TD]: IN_ROW_MODE,
+    [$.TH]: IN_ROW_MODE
+};
+
+//Token handlers map for insertion modes
+const TOKEN_HANDLERS = {
+    [INITIAL_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenInInitialMode,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenInInitialMode,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: doctypeInInitialMode,
+        [Tokenizer.START_TAG_TOKEN]: tokenInInitialMode,
+        [Tokenizer.END_TAG_TOKEN]: tokenInInitialMode,
+        [Tokenizer.EOF_TOKEN]: tokenInInitialMode
+    },
+    [BEFORE_HTML_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenBeforeHtml,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenBeforeHtml,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagBeforeHtml,
+        [Tokenizer.END_TAG_TOKEN]: endTagBeforeHtml,
+        [Tokenizer.EOF_TOKEN]: tokenBeforeHtml
+    },
+    [BEFORE_HEAD_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenBeforeHead,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenBeforeHead,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: misplacedDoctype,
+        [Tokenizer.START_TAG_TOKEN]: startTagBeforeHead,
+        [Tokenizer.END_TAG_TOKEN]: endTagBeforeHead,
+        [Tokenizer.EOF_TOKEN]: tokenBeforeHead
+    },
+    [IN_HEAD_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenInHead,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenInHead,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: misplacedDoctype,
+        [Tokenizer.START_TAG_TOKEN]: startTagInHead,
+        [Tokenizer.END_TAG_TOKEN]: endTagInHead,
+        [Tokenizer.EOF_TOKEN]: tokenInHead
+    },
+    [IN_HEAD_NO_SCRIPT_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenInHeadNoScript,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenInHeadNoScript,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: misplacedDoctype,
+        [Tokenizer.START_TAG_TOKEN]: startTagInHeadNoScript,
+        [Tokenizer.END_TAG_TOKEN]: endTagInHeadNoScript,
+        [Tokenizer.EOF_TOKEN]: tokenInHeadNoScript
+    },
+    [AFTER_HEAD_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenAfterHead,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenAfterHead,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: misplacedDoctype,
+        [Tokenizer.START_TAG_TOKEN]: startTagAfterHead,
+        [Tokenizer.END_TAG_TOKEN]: endTagAfterHead,
+        [Tokenizer.EOF_TOKEN]: tokenAfterHead
+    },
+    [IN_BODY_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInBody,
+        [Tokenizer.END_TAG_TOKEN]: endTagInBody,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [TEXT_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: ignoreToken,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: ignoreToken,
+        [Tokenizer.END_TAG_TOKEN]: endTagInText,
+        [Tokenizer.EOF_TOKEN]: eofInText
+    },
+    [IN_TABLE_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInTable,
+        [Tokenizer.END_TAG_TOKEN]: endTagInTable,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_TABLE_TEXT_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInTableText,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInTableText,
+        [Tokenizer.COMMENT_TOKEN]: tokenInTableText,
+        [Tokenizer.DOCTYPE_TOKEN]: tokenInTableText,
+        [Tokenizer.START_TAG_TOKEN]: tokenInTableText,
+        [Tokenizer.END_TAG_TOKEN]: tokenInTableText,
+        [Tokenizer.EOF_TOKEN]: tokenInTableText
+    },
+    [IN_CAPTION_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInCaption,
+        [Tokenizer.END_TAG_TOKEN]: endTagInCaption,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_COLUMN_GROUP_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenInColumnGroup,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenInColumnGroup,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInColumnGroup,
+        [Tokenizer.END_TAG_TOKEN]: endTagInColumnGroup,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_TABLE_BODY_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInTableBody,
+        [Tokenizer.END_TAG_TOKEN]: endTagInTableBody,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_ROW_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: characterInTable,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInRow,
+        [Tokenizer.END_TAG_TOKEN]: endTagInRow,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_CELL_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInCell,
+        [Tokenizer.END_TAG_TOKEN]: endTagInCell,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_SELECT_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInSelect,
+        [Tokenizer.END_TAG_TOKEN]: endTagInSelect,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_SELECT_IN_TABLE_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInSelectInTable,
+        [Tokenizer.END_TAG_TOKEN]: endTagInSelectInTable,
+        [Tokenizer.EOF_TOKEN]: eofInBody
+    },
+    [IN_TEMPLATE_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: characterInBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInTemplate,
+        [Tokenizer.END_TAG_TOKEN]: endTagInTemplate,
+        [Tokenizer.EOF_TOKEN]: eofInTemplate
+    },
+    [AFTER_BODY_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenAfterBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenAfterBody,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendCommentToRootHtmlElement,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagAfterBody,
+        [Tokenizer.END_TAG_TOKEN]: endTagAfterBody,
+        [Tokenizer.EOF_TOKEN]: stopParsing
+    },
+    [IN_FRAMESET_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagInFrameset,
+        [Tokenizer.END_TAG_TOKEN]: endTagInFrameset,
+        [Tokenizer.EOF_TOKEN]: stopParsing
+    },
+    [AFTER_FRAMESET_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: insertCharacters,
+        [Tokenizer.COMMENT_TOKEN]: appendComment,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagAfterFrameset,
+        [Tokenizer.END_TAG_TOKEN]: endTagAfterFrameset,
+        [Tokenizer.EOF_TOKEN]: stopParsing
+    },
+    [AFTER_AFTER_BODY_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: tokenAfterAfterBody,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: tokenAfterAfterBody,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendCommentToDocument,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagAfterAfterBody,
+        [Tokenizer.END_TAG_TOKEN]: tokenAfterAfterBody,
+        [Tokenizer.EOF_TOKEN]: stopParsing
+    },
+    [AFTER_AFTER_FRAMESET_MODE]: {
+        [Tokenizer.CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.NULL_CHARACTER_TOKEN]: ignoreToken,
+        [Tokenizer.WHITESPACE_CHARACTER_TOKEN]: whitespaceCharacterInBody,
+        [Tokenizer.COMMENT_TOKEN]: appendCommentToDocument,
+        [Tokenizer.DOCTYPE_TOKEN]: ignoreToken,
+        [Tokenizer.START_TAG_TOKEN]: startTagAfterAfterFrameset,
+        [Tokenizer.END_TAG_TOKEN]: ignoreToken,
+        [Tokenizer.EOF_TOKEN]: stopParsing
+    }
+};
+
+//Parser
+class Parser {
+    constructor(options) {
+        this.options = mergeOptions(DEFAULT_OPTIONS, options);
+
+        this.treeAdapter = this.options.treeAdapter;
+        this.pendingScript = null;
+
+        if (this.options.sourceCodeLocationInfo) {
+            Mixin.install(this, LocationInfoParserMixin);
+        }
+
+        if (this.options.onParseError) {
+            Mixin.install(this, ErrorReportingParserMixin, { onParseError: this.options.onParseError });
+        }
+    }
+
+    // API
+    parse(html) {
+        const document = this.treeAdapter.createDocument();
+
+        this._bootstrap(document, null);
+        this.tokenizer.write(html, true);
+        this._runParsingLoop(null);
+
+        return document;
+    }
+
+    parseFragment(html, fragmentContext) {
+        //NOTE: use <template> element as a fragment context if context element was not provided,
+        //so we will parse in "forgiving" manner
+        if (!fragmentContext) {
+            fragmentContext = this.treeAdapter.createElement($.TEMPLATE, NS.HTML, []);
+        }
+
+        //NOTE: create fake element which will be used as 'document' for fragment parsing.
+        //This is important for jsdom there 'document' can't be recreated, therefore
+        //fragment parsing causes messing of the main `document`.
+        const documentMock = this.treeAdapter.createElement('documentmock', NS.HTML, []);
+
+        this._bootstrap(documentMock, fragmentContext);
+
+        if (this.treeAdapter.getTagName(fragmentContext) === $.TEMPLATE) {
+            this._pushTmplInsertionMode(IN_TEMPLATE_MODE);
+        }
+
+        this._initTokenizerForFragmentParsing();
+        this._insertFakeRootElement();
+        this._resetInsertionMode();
+        this._findFormInFragmentContext();
+        this.tokenizer.write(html, true);
+        this._runParsingLoop(null);
+
+        const rootElement = this.treeAdapter.getFirstChild(documentMock);
+        const fragment = this.treeAdapter.createDocumentFragment();
+
+        this._adoptNodes(rootElement, fragment);
+
+        return fragment;
+    }
+
+    //Bootstrap parser
+    _bootstrap(document, fragmentContext) {
+        this.tokenizer = new Tokenizer(this.options);
+
+        this.stopped = false;
+
+        this.insertionMode = INITIAL_MODE;
+        this.originalInsertionMode = '';
+
+        this.document = document;
+        this.fragmentContext = fragmentContext;
+
+        this.headElement = null;
+        this.formElement = null;
+
+        this.openElements = new OpenElementStack(this.document, this.treeAdapter);
+        this.activeFormattingElements = new FormattingElementList(this.treeAdapter);
+
+        this.tmplInsertionModeStack = [];
+        this.tmplInsertionModeStackTop = -1;
+        this.currentTmplInsertionMode = null;
+
+        this.pendingCharacterTokens = [];
+        this.hasNonWhitespacePendingCharacterToken = false;
+
+        this.framesetOk = true;
+        this.skipNextNewLine = false;
+        this.fosterParentingEnabled = false;
+    }
+
+    //Errors
+    _err() {
+        // NOTE: err reporting is noop by default. Enabled by mixin.
+    }
+
+    //Parsing loop
+    _runParsingLoop(scriptHandler) {
+        while (!this.stopped) {
+            this._setupTokenizerCDATAMode();
+
+            const token = this.tokenizer.getNextToken();
+
+            if (token.type === Tokenizer.HIBERNATION_TOKEN) {
+                break;
+            }
+
+            if (this.skipNextNewLine) {
+                this.skipNextNewLine = false;
+
+                if (token.type === Tokenizer.WHITESPACE_CHARACTER_TOKEN && token.chars[0] === '\n') {
+                    if (token.chars.length === 1) {
+                        continue;
+                    }
+
+                    token.chars = token.chars.substr(1);
+                }
+            }
+
+            this._processInputToken(token);
+
+            if (scriptHandler && this.pendingScript) {
+                break;
+            }
+        }
+    }
+
+    runParsingLoopForCurrentChunk(writeCallback, scriptHandler) {
+        this._runParsingLoop(scriptHandler);
+
+        if (scriptHandler && this.pendingScript) {
+            const script = this.pendingScript;
+
+            this.pendingScript = null;
+
+            scriptHandler(script);
+
+            return;
+        }
+
+        if (writeCallback) {
+            writeCallback();
+        }
+    }
+
+    //Text parsing
+    _setupTokenizerCDATAMode() {
+        const current = this._getAdjustedCurrentElement();
+
+        this.tokenizer.allowCDATA =
+            current &&
+            current !== this.document &&
+            this.treeAdapter.getNamespaceURI(current) !== NS.HTML &&
+            !this._isIntegrationPoint(current);
+    }
+
+    _switchToTextParsing(currentToken, nextTokenizerState) {
+        this._insertElement(currentToken, NS.HTML);
+        this.tokenizer.state = nextTokenizerState;
+        this.originalInsertionMode = this.insertionMode;
+        this.insertionMode = TEXT_MODE;
+    }
+
+    switchToPlaintextParsing() {
+        this.insertionMode = TEXT_MODE;
+        this.originalInsertionMode = IN_BODY_MODE;
+        this.tokenizer.state = Tokenizer.MODE.PLAINTEXT;
+    }
+
+    //Fragment parsing
+    _getAdjustedCurrentElement() {
+        return this.openElements.stackTop === 0 && this.fragmentContext
+            ? this.fragmentContext
+            : this.openElements.current;
+    }
+
+    _findFormInFragmentContext() {
+        let node = this.fragmentContext;
+
+        do {
+            if (this.treeAdapter.getTagName(node) === $.FORM) {
+                this.formElement = node;
+                break;
+            }
+
+            node = this.treeAdapter.getParentNode(node);
+        } while (node);
+    }
+
+    _initTokenizerForFragmentParsing() {
+        if (this.treeAdapter.getNamespaceURI(this.fragmentContext) === NS.HTML) {
+            const tn = this.treeAdapter.getTagName(this.fragmentContext);
+
+            if (tn === $.TITLE || tn === $.TEXTAREA) {
+                this.tokenizer.state = Tokenizer.MODE.RCDATA;
+            } else if (
+                tn === $.STYLE ||
+                tn === $.XMP ||
+                tn === $.IFRAME ||
+                tn === $.NOEMBED ||
+                tn === $.NOFRAMES ||
+                tn === $.NOSCRIPT
+            ) {
+                this.tokenizer.state = Tokenizer.MODE.RAWTEXT;
+            } else if (tn === $.SCRIPT) {
+                this.tokenizer.state = Tokenizer.MODE.SCRIPT_DATA;
+            } else if (tn === $.PLAINTEXT) {
+                this.tokenizer.state = Tokenizer.MODE.PLAINTEXT;
+            }
+        }
+    }
+
+    //Tree mutation
+    _setDocumentType(token) {
+        const name = token.name || '';
+        const publicId = token.publicId || '';
+        const systemId = token.systemId || '';
+
+        this.treeAdapter.setDocumentType(this.document, name, publicId, systemId);
+    }
+
+    _attachElementToTree(element) {
+        if (this._shouldFosterParentOnInsertion()) {
+            this._fosterParentElement(element);
+        } else {
+            const parent = this.openElements.currentTmplContent || this.openElements.current;
+
+            this.treeAdapter.appendChild(parent, element);
+        }
+    }
+
+    _appendElement(token, namespaceURI) {
+        const element = this.treeAdapter.createElement(token.tagName, namespaceURI, token.attrs);
+
+        this._attachElementToTree(element);
+    }
+
+    _insertElement(token, namespaceURI) {
+        const element = this.treeAdapter.createElement(token.tagName, namespaceURI, token.attrs);
+
+        this._attachElementToTree(element);
+        this.openElements.push(element);
+    }
+
+    _insertFakeElement(tagName) {
+        const element = this.treeAdapter.createElement(tagName, NS.HTML, []);
+
+        this._attachElementToTree(element);
+        this.openElements.push(element);
+    }
+
+    _insertTemplate(token) {
+        const tmpl = this.treeAdapter.createElement(token.tagName, NS.HTML, token.attrs);
+        const content = this.treeAdapter.createDocumentFragment();
+
+        this.treeAdapter.setTemplateContent(tmpl, content);
+        this._attachElementToTree(tmpl);
+        this.openElements.push(tmpl);
+    }
+
+    _insertFakeRootElement() {
+        const element = this.treeAdapter.createElement($.HTML, NS.HTML, []);
+
+        this.treeAdapter.appendChild(this.openElements.current, element);
+        this.openElements.push(element);
+    }
+
+    _appendCommentNode(token, parent) {
+        const commentNode = this.treeAdapter.createCommentNode(token.data);
+
+        this.treeAdapter.appendChild(parent, commentNode);
+    }
+
+    _insertCharacters(token) {
+        if (this._shouldFosterParentOnInsertion()) {
+            this._fosterParentText(token.chars);
+        } else {
+            const parent = this.openElements.currentTmplContent || this.openElements.current;
+
+            this.treeAdapter.insertText(parent, token.chars);
+        }
+    }
+
+    _adoptNodes(donor, recipient) {
+        for (let child = this.treeAdapter.getFirstChild(donor); child; child = this.treeAdapter.getFirstChild(donor)) {
+            this.treeAdapter.detachNode(child);
+            this.treeAdapter.appendChild(recipient, child);
+        }
+    }
+
+    //Token processing
+    _shouldProcessTokenInForeignContent(token) {
+        const current = this._getAdjustedCurrentElement();
+
+        if (!current || current === this.document) {
+            return false;
+        }
+
+        const ns = this.treeAdapter.getNamespaceURI(current);
+
+        if (ns === NS.HTML) {
+            return false;
+        }
+
+        if (
+            this.treeAdapter.getTagName(current) === $.ANNOTATION_XML &&
+            ns === NS.MATHML &&
+            token.type === Tokenizer.START_TAG_TOKEN &&
+            token.tagName === $.SVG
+        ) {
+            return false;
+        }
+
+        const isCharacterToken =
+            token.type === Tokenizer.CHARACTER_TOKEN ||
+            token.type === Tokenizer.NULL_CHARACTER_TOKEN ||
+            token.type === Tokenizer.WHITESPACE_CHARACTER_TOKEN;
+
+        const isMathMLTextStartTag =
+            token.type === Tokenizer.START_TAG_TOKEN && token.tagName !== $.MGLYPH && token.tagName !== $.MALIGNMARK;
+
+        if ((isMathMLTextStartTag || isCharacterToken) && this._isIntegrationPoint(current, NS.MATHML)) {
+            return false;
+        }
+
+        if (
+            (token.type === Tokenizer.START_TAG_TOKEN || isCharacterToken) &&
+            this._isIntegrationPoint(current, NS.HTML)
+        ) {
+            return false;
+        }
+
+        return token.type !== Tokenizer.EOF_TOKEN;
+    }
+
+    _processToken(token) {
+        TOKEN_HANDLERS[this.insertionMode][token.type](this, token);
+    }
+
+    _processTokenInBodyMode(token) {
+        TOKEN_HANDLERS[IN_BODY_MODE][token.type](this, token);
+    }
+
+    _processTokenInForeignContent(token) {
+        if (token.type === Tokenizer.CHARACTER_TOKEN) {
+            characterInForeignContent(this, token);
+        } else if (token.type === Tokenizer.NULL_CHARACTER_TOKEN) {
+            nullCharacterInForeignContent(this, token);
+        } else if (token.type === Tokenizer.WHITESPACE_CHARACTER_TOKEN) {
+            insertCharacters(this, token);
+        } else if (token.type === Tokenizer.COMMENT_TOKEN) {
+            appendComment(this, token);
+        } else if (token.type === Tokenizer.START_TAG_TOKEN) {
+            startTagInForeignContent(this, token);
+        } else if (token.type === Tokenizer.END_TAG_TOKEN) {
+            endTagInForeignContent(this, token);
+        }
+    }
+
+    _processInputToken(token) {
+        if (this._shouldProcessTokenInForeignContent(token)) {
+            this._processTokenInForeignContent(token);
+        } else {
+            this._processToken(token);
+        }
+
+        if (token.type === Tokenizer.START_TAG_TOKEN && token.selfClosing && !token.ackSelfClosing) {
+            this._err(ERR.nonVoidHtmlElementStartTagWithTrailingSolidus);
+        }
+    }
+
+    //Integration points
+    _isIntegrationPoint(element, foreignNS) {
+        const tn = this.treeAdapter.getTagName(element);
+        const ns = this.treeAdapter.getNamespaceURI(element);
+        const attrs = this.treeAdapter.getAttrList(element);
+
+        return foreignContent.isIntegrationPoint(tn, ns, attrs, foreignNS);
+    }
+
+    //Active formatting elements reconstruction
+    _reconstructActiveFormattingElements() {
+        const listLength = this.activeFormattingElements.length;
+
+        if (listLength) {
+            let unopenIdx = listLength;
+            let entry = null;
+
+            do {
+                unopenIdx--;
+                entry = this.activeFormattingElements.entries[unopenIdx];
+
+                if (entry.type === FormattingElementList.MARKER_ENTRY || this.openElements.contains(entry.element)) {
+                    unopenIdx++;
+                    break;
+                }
+            } while (unopenIdx > 0);
+
+            for (let i = unopenIdx; i < listLength; i++) {
+                entry = this.activeFormattingElements.entries[i];
+                this._insertElement(entry.token, this.treeAdapter.getNamespaceURI(entry.element));
+                entry.element = this.openElements.current;
+            }
+        }
+    }
+
+    //Close elements
+    _closeTableCell() {
+        this.openElements.generateImpliedEndTags();
+        this.openElements.popUntilTableCellPopped();
+        this.activeFormattingElements.clearToLastMarker();
+        this.insertionMode = IN_ROW_MODE;
+    }
+
+    _closePElement() {
+        this.openElements.generateImpliedEndTagsWithExclusion($.P);
+        this.openElements.popUntilTagNamePopped($.P);
+    }
+
+    //Insertion modes
+    _resetInsertionMode() {
+        for (let i = this.openElements.stackTop, last = false; i >= 0; i--) {
+            let element = this.openElements.items[i];
+
+            if (i === 0) {
+                last = true;
+
+                if (this.fragmentContext) {
+                    element = this.fragmentContext;
+                }
+            }
+
+            const tn = this.treeAdapter.getTagName(element);
+            const newInsertionMode = INSERTION_MODE_RESET_MAP[tn];
+
+            if (newInsertionMode) {
+                this.insertionMode = newInsertionMode;
+                break;
+            } else if (!last && (tn === $.TD || tn === $.TH)) {
+                this.insertionMode = IN_CELL_MODE;
+                break;
+            } else if (!last && tn === $.HEAD) {
+                this.insertionMode = IN_HEAD_MODE;
+                break;
+            } else if (tn === $.SELECT) {
+                this._resetInsertionModeForSelect(i);
+                break;
+            } else if (tn === $.TEMPLATE) {
+                this.insertionMode = this.currentTmplInsertionMode;
+                break;
+            } else if (tn === $.HTML) {
+                this.insertionMode = this.headElement ? AFTER_HEAD_MODE : BEFORE_HEAD_MODE;
+                break;
+            } else if (last) {
+                this.insertionMode = IN_BODY_MODE;
+                break;
+            }
+        }
+    }
+
+    _resetInsertionModeForSelect(selectIdx) {
+        if (selectIdx > 0) {
+            for (let i = selectIdx - 1; i > 0; i--) {
+                const ancestor = this.openElements.items[i];
+                const tn = this.treeAdapter.getTagName(ancestor);
+
+                if (tn === $.TEMPLATE) {
+                    break;
+                } else if (tn === $.TABLE) {
+                    this.insertionMode = IN_SELECT_IN_TABLE_MODE;
+                    return;
+                }
+            }
+        }
+
+        this.insertionMode = IN_SELECT_MODE;
+    }
+
+    _pushTmplInsertionMode(mode) {
+        this.tmplInsertionModeStack.push(mode);
+        this.tmplInsertionModeStackTop++;
+        this.currentTmplInsertionMode = mode;
+    }
+
+    _popTmplInsertionMode() {
+        this.tmplInsertionModeStack.pop();
+        this.tmplInsertionModeStackTop--;
+        this.currentTmplInsertionMode = this.tmplInsertionModeStack[this.tmplInsertionModeStackTop];
+    }
+
+    //Foster parenting
+    _isElementCausesFosterParenting(element) {
+        const tn = this.treeAdapter.getTagName(element);
+
+        return tn === $.TABLE || tn === $.TBODY || tn === $.TFOOT || tn === $.THEAD || tn === $.TR;
+    }
+
+    _shouldFosterParentOnInsertion() {
+        return this.fosterParentingEnabled && this._isElementCausesFosterParenting(this.openElements.current);
+    }
+
+    _findFosterParentingLocation() {
+        const location = {
+            parent: null,
+            beforeElement: null
+        };
+
+        for (let i = this.openElements.stackTop; i >= 0; i--) {
+            const openElement = this.openElements.items[i];
+            const tn = this.treeAdapter.getTagName(openElement);
+            const ns = this.treeAdapter.getNamespaceURI(openElement);
+
+            if (tn === $.TEMPLATE && ns === NS.HTML) {
+                location.parent = this.treeAdapter.getTemplateContent(openElement);
+                break;
+            } else if (tn === $.TABLE) {
+                location.parent = this.treeAdapter.getParentNode(openElement);
+
+                if (location.parent) {
+                    location.beforeElement = openElement;
+                } else {
+                    location.parent = this.openElements.items[i - 1];
+                }
+
+                break;
+            }
+        }
+
+        if (!location.parent) {
+            location.parent = this.openElements.items[0];
+        }
+
+        return location;
+    }
+
+    _fosterParentElement(element) {
+        const location = this._findFosterParentingLocation();
+
+        if (location.beforeElement) {
+            this.treeAdapter.insertBefore(location.parent, element, location.beforeElement);
+        } else {
+            this.treeAdapter.appendChild(location.parent, element);
+        }
+    }
+
+    _fosterParentText(chars) {
+        const location = this._findFosterParentingLocation();
+
+        if (location.beforeElement) {
+            this.treeAdapter.insertTextBefore(location.parent, chars, location.beforeElement);
+        } else {
+            this.treeAdapter.insertText(location.parent, chars);
+        }
+    }
+
+    //Special elements
+    _isSpecialElement(element) {
+        const tn = this.treeAdapter.getTagName(element);
+        const ns = this.treeAdapter.getNamespaceURI(element);
+
+        return HTML.SPECIAL_ELEMENTS[ns][tn];
+    }
+}
+
+module.exports = Parser;
+
+//Adoption agency algorithm
+//(see: http://www.whatwg.org/specs/web-apps/current-work/multipage/tree-construction.html#adoptionAgency)
+//------------------------------------------------------------------
+
+//Steps 5-8 of the algorithm
+function aaObtainFormattingElementEntry(p, token) {
+    let formattingElementEntry = p.activeFormattingElements.getElementEntryInScopeWithTagName(token.tagName);
+
+    if (formattingElementEntry) {
+        if (!p.openElements.contains(formattingElementEntry.element)) {
+            p.activeFormattingElements.removeEntry(formattingElementEntry);
+            formattingElementEntry = null;
+        } else if (!p.openElements.hasInScope(token.tagName)) {
+            formattingElementEntry = null;
+        }
+    } else {
+        genericEndTagInBody(p, token);
+    }
+
+    return formattingElementEntry;
+}
+
+//Steps 9 and 10 of the algorithm
+function aaObtainFurthestBlock(p, formattingElementEntry) {
+    let furthestBlock = null;
+
+    for (let i = p.openElements.stackTop; i >= 0; i--) {
+        const element = p.openElements.items[i];
+
+        if (element === formattingElementEntry.element) {
+            break;
+        }
+
+        if (p._isSpecialElement(element)) {
+            furthestBlock = element;
+        }
+    }
+
+    if (!furthestBlock) {
+        p.openElements.popUntilElementPopped(formattingElementEntry.element);
+        p.activeFormattingElements.removeEntry(formattingElementEntry);
+    }
+
+    return furthestBlock;
+}
+
+//Step 13 of the algorithm
+function aaInnerLoop(p, furthestBlock, formattingElement) {
+    let lastElement = furthestBlock;
+    let nextElement = p.openElements.getCommonAncestor(furthestBlock);
+
+    for (let i = 0, element = nextElement; element !== formattingElement; i++, element = nextElement) {
+        //NOTE: store next element for the next loop iteration (it may be deleted from the stack by step 9.5)
+        nextElement = p.openElements.getCommonAncestor(element);
+
+        const elementEntry = p.activeFormattingElements.getElementEntry(element);
+        const counterOverflow = elementEntry && i >= AA_INNER_LOOP_ITER;
+        const shouldRemoveFromOpenElements = !elementEntry || counterOverflow;
+
+        if (shouldRemoveFromOpenElements) {
+            if (counterOverflow) {
+                p.activeFormattingElements.removeEntry(elementEntry);
+            }
+
+            p.openElements.remove(element);
+        } else {
+            element = aaRecreateElementFromEntry(p, elementEntry);
+
+            if (lastElement === furthestBlock) {
+                p.activeFormattingElements.bookmark = elementEntry;
+            }
+
+            p.treeAdapter.detachNode(lastElement);
+            p.treeAdapter.appendChild(element, lastElement);
+            lastElement = element;
+        }
+    }
+
+    return lastElement;
+}
+
+//Step 13.7 of the algorithm
+function aaRecreateElementFromEntry(p, elementEntry) {
+    const ns = p.treeAdapter.getNamespaceURI(elementEntry.element);
+    const newElement = p.treeAdapter.createElement(elementEntry.token.tagName, ns, elementEntry.token.attrs);
+
+    p.openElements.replace(elementEntry.element, newElement);
+    elementEntry.element = newElement;
+
+    return newElement;
+}
+
+//Step 14 of the algorithm
+function aaInsertLastNodeInCommonAncestor(p, commonAncestor, lastElement) {
+    if (p._isElementCausesFosterParenting(commonAncestor)) {
+        p._fosterParentElement(lastElement);
+    } else {
+        const tn = p.treeAdapter.getTagName(commonAncestor);
+        const ns = p.treeAdapter.getNamespaceURI(commonAncestor);
+
+        if (tn === $.TEMPLATE && ns === NS.HTML) {
+            commonAncestor = p.treeAdapter.getTemplateContent(commonAncestor);
+        }
+
+        p.treeAdapter.appendChild(commonAncestor, lastElement);
+    }
+}
+
+//Steps 15-19 of the algorithm
+function aaReplaceFormattingElement(p, furthestBlock, formattingElementEntry) {
+    const ns = p.treeAdapter.getNamespaceURI(formattingElementEntry.element);
+    const token = formattingElementEntry.token;
+    const newElement = p.treeAdapter.createElement(token.tagName, ns, token.attrs);
+
+    p._adoptNodes(furthestBlock, newElement);
+    p.treeAdapter.appendChild(furthestBlock, newElement);
+
+    p.activeFormattingElements.insertElementAfterBookmark(newElement, formattingElementEntry.token);
+    p.activeFormattingElements.removeEntry(formattingElementEntry);
+
+    p.openElements.remove(formattingElementEntry.element);
+    p.openElements.insertAfter(furthestBlock, newElement);
+}
+
+//Algorithm entry point
+function callAdoptionAgency(p, token) {
+    let formattingElementEntry;
+
+    for (let i = 0; i < AA_OUTER_LOOP_ITER; i++) {
+        formattingElementEntry = aaObtainFormattingElementEntry(p, token, formattingElementEntry);
+
+        if (!formattingElementEntry) {
+            break;
+        }
+
+        const furthestBlock = aaObtainFurthestBlock(p, formattingElementEntry);
+
+        if (!furthestBlock) {
+            break;
+        }
+
+        p.activeFormattingElements.bookmark = formattingElementEntry;
+
+        const lastElement = aaInnerLoop(p, furthestBlock, formattingElementEntry.element);
+        const commonAncestor = p.openElements.getCommonAncestor(formattingElementEntry.element);
+
+        p.treeAdapter.detachNode(lastElement);
+        aaInsertLastNodeInCommonAncestor(p, commonAncestor, lastElement);
+        aaReplaceFormattingElement(p, furthestBlock, formattingElementEntry);
+    }
+}
+
+//Generic token handlers
+//------------------------------------------------------------------
+function ignoreToken() {
+    //NOTE: do nothing =)
+}
+
+function misplacedDoctype(p) {
+    p._err(ERR.misplacedDoctype);
+}
+
+function appendComment(p, token) {
+    p._appendCommentNode(token, p.openElements.currentTmplContent || p.openElements.current);
+}
+
+function appendCommentToRootHtmlElement(p, token) {
+    p._appendCommentNode(token, p.openElements.items[0]);
+}
+
+function appendCommentToDocument(p, token) {
+    p._appendCommentNode(token, p.document);
+}
+
+function insertCharacters(p, token) {
+    p._insertCharacters(token);
+}
+
+function stopParsing(p) {
+    p.stopped = true;
+}
+
+// The "initial" insertion mode
+//------------------------------------------------------------------
+function doctypeInInitialMode(p, token) {
+    p._setDocumentType(token);
+
+    const mode = token.forceQuirks ? HTML.DOCUMENT_MODE.QUIRKS : doctype.getDocumentMode(token);
+
+    if (!doctype.isConforming(token)) {
+        p._err(ERR.nonConformingDoctype);
+    }
+
+    p.treeAdapter.setDocumentMode(p.document, mode);
+
+    p.insertionMode = BEFORE_HTML_MODE;
+}
+
+function tokenInInitialMode(p, token) {
+    p._err(ERR.missingDoctype, { beforeToken: true });
+    p.treeAdapter.setDocumentMode(p.document, HTML.DOCUMENT_MODE.QUIRKS);
+    p.insertionMode = BEFORE_HTML_MODE;
+    p._processToken(token);
+}
+
+// The "before html" insertion mode
+//------------------------------------------------------------------
+function startTagBeforeHtml(p, token) {
+    if (token.tagName === $.HTML) {
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = BEFORE_HEAD_MODE;
+    } else {
+        tokenBeforeHtml(p, token);
+    }
+}
+
+function endTagBeforeHtml(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML || tn === $.HEAD || tn === $.BODY || tn === $.BR) {
+        tokenBeforeHtml(p, token);
+    }
+}
+
+function tokenBeforeHtml(p, token) {
+    p._insertFakeRootElement();
+    p.insertionMode = BEFORE_HEAD_MODE;
+    p._processToken(token);
+}
+
+// The "before head" insertion mode
+//------------------------------------------------------------------
+function startTagBeforeHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.HEAD) {
+        p._insertElement(token, NS.HTML);
+        p.headElement = p.openElements.current;
+        p.insertionMode = IN_HEAD_MODE;
+    } else {
+        tokenBeforeHead(p, token);
+    }
+}
+
+function endTagBeforeHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HEAD || tn === $.BODY || tn === $.HTML || tn === $.BR) {
+        tokenBeforeHead(p, token);
+    } else {
+        p._err(ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+
+function tokenBeforeHead(p, token) {
+    p._insertFakeElement($.HEAD);
+    p.headElement = p.openElements.current;
+    p.insertionMode = IN_HEAD_MODE;
+    p._processToken(token);
+}
+
+// The "in head" insertion mode
+//------------------------------------------------------------------
+function startTagInHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.BASE || tn === $.BASEFONT || tn === $.BGSOUND || tn === $.LINK || tn === $.META) {
+        p._appendElement(token, NS.HTML);
+        token.ackSelfClosing = true;
+    } else if (tn === $.TITLE) {
+        p._switchToTextParsing(token, Tokenizer.MODE.RCDATA);
+    } else if (tn === $.NOSCRIPT) {
+        if (p.options.scriptingEnabled) {
+            p._switchToTextParsing(token, Tokenizer.MODE.RAWTEXT);
+        } else {
+            p._insertElement(token, NS.HTML);
+            p.insertionMode = IN_HEAD_NO_SCRIPT_MODE;
+        }
+    } else if (tn === $.NOFRAMES || tn === $.STYLE) {
+        p._switchToTextParsing(token, Tokenizer.MODE.RAWTEXT);
+    } else if (tn === $.SCRIPT) {
+        p._switchToTextParsing(token, Tokenizer.MODE.SCRIPT_DATA);
+    } else if (tn === $.TEMPLATE) {
+        p._insertTemplate(token, NS.HTML);
+        p.activeFormattingElements.insertMarker();
+        p.framesetOk = false;
+        p.insertionMode = IN_TEMPLATE_MODE;
+        p._pushTmplInsertionMode(IN_TEMPLATE_MODE);
+    } else if (tn === $.HEAD) {
+        p._err(ERR.misplacedStartTagForHeadElement);
+    } else {
+        tokenInHead(p, token);
+    }
+}
+
+function endTagInHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HEAD) {
+        p.openElements.pop();
+        p.insertionMode = AFTER_HEAD_MODE;
+    } else if (tn === $.BODY || tn === $.BR || tn === $.HTML) {
+        tokenInHead(p, token);
+    } else if (tn === $.TEMPLATE) {
+        if (p.openElements.tmplCount > 0) {
+            p.openElements.generateImpliedEndTagsThoroughly();
+
+            if (p.openElements.currentTagName !== $.TEMPLATE) {
+                p._err(ERR.closingOfElementWithOpenChildElements);
+            }
+
+            p.openElements.popUntilTagNamePopped($.TEMPLATE);
+            p.activeFormattingElements.clearToLastMarker();
+            p._popTmplInsertionMode();
+            p._resetInsertionMode();
+        } else {
+            p._err(ERR.endTagWithoutMatchingOpenElement);
+        }
+    } else {
+        p._err(ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+
+function tokenInHead(p, token) {
+    p.openElements.pop();
+    p.insertionMode = AFTER_HEAD_MODE;
+    p._processToken(token);
+}
+
+// The "in head no script" insertion mode
+//------------------------------------------------------------------
+function startTagInHeadNoScript(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (
+        tn === $.BASEFONT ||
+        tn === $.BGSOUND ||
+        tn === $.HEAD ||
+        tn === $.LINK ||
+        tn === $.META ||
+        tn === $.NOFRAMES ||
+        tn === $.STYLE
+    ) {
+        startTagInHead(p, token);
+    } else if (tn === $.NOSCRIPT) {
+        p._err(ERR.nestedNoscriptInHead);
+    } else {
+        tokenInHeadNoScript(p, token);
+    }
+}
+
+function endTagInHeadNoScript(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.NOSCRIPT) {
+        p.openElements.pop();
+        p.insertionMode = IN_HEAD_MODE;
+    } else if (tn === $.BR) {
+        tokenInHeadNoScript(p, token);
+    } else {
+        p._err(ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+
+function tokenInHeadNoScript(p, token) {
+    const errCode =
+        token.type === Tokenizer.EOF_TOKEN ? ERR.openElementsLeftAfterEof : ERR.disallowedContentInNoscriptInHead;
+
+    p._err(errCode);
+    p.openElements.pop();
+    p.insertionMode = IN_HEAD_MODE;
+    p._processToken(token);
+}
+
+// The "after head" insertion mode
+//------------------------------------------------------------------
+function startTagAfterHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.BODY) {
+        p._insertElement(token, NS.HTML);
+        p.framesetOk = false;
+        p.insertionMode = IN_BODY_MODE;
+    } else if (tn === $.FRAMESET) {
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = IN_FRAMESET_MODE;
+    } else if (
+        tn === $.BASE ||
+        tn === $.BASEFONT ||
+        tn === $.BGSOUND ||
+        tn === $.LINK ||
+        tn === $.META ||
+        tn === $.NOFRAMES ||
+        tn === $.SCRIPT ||
+        tn === $.STYLE ||
+        tn === $.TEMPLATE ||
+        tn === $.TITLE
+    ) {
+        p._err(ERR.abandonedHeadElementChild);
+        p.openElements.push(p.headElement);
+        startTagInHead(p, token);
+        p.openElements.remove(p.headElement);
+    } else if (tn === $.HEAD) {
+        p._err(ERR.misplacedStartTagForHeadElement);
+    } else {
+        tokenAfterHead(p, token);
+    }
+}
+
+function endTagAfterHead(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.BODY || tn === $.HTML || tn === $.BR) {
+        tokenAfterHead(p, token);
+    } else if (tn === $.TEMPLATE) {
+        endTagInHead(p, token);
+    } else {
+        p._err(ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+
+function tokenAfterHead(p, token) {
+    p._insertFakeElement($.BODY);
+    p.insertionMode = IN_BODY_MODE;
+    p._processToken(token);
+}
+
+// The "in body" insertion mode
+//------------------------------------------------------------------
+function whitespaceCharacterInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertCharacters(token);
+}
+
+function characterInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertCharacters(token);
+    p.framesetOk = false;
+}
+
+function htmlStartTagInBody(p, token) {
+    if (p.openElements.tmplCount === 0) {
+        p.treeAdapter.adoptAttributes(p.openElements.items[0], token.attrs);
+    }
+}
+
+function bodyStartTagInBody(p, token) {
+    const bodyElement = p.openElements.tryPeekProperlyNestedBodyElement();
+
+    if (bodyElement && p.openElements.tmplCount === 0) {
+        p.framesetOk = false;
+        p.treeAdapter.adoptAttributes(bodyElement, token.attrs);
+    }
+}
+
+function framesetStartTagInBody(p, token) {
+    const bodyElement = p.openElements.tryPeekProperlyNestedBodyElement();
+
+    if (p.framesetOk && bodyElement) {
+        p.treeAdapter.detachNode(bodyElement);
+        p.openElements.popAllUpToHtmlElement();
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = IN_FRAMESET_MODE;
+    }
+}
+
+function addressStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function numberedHeaderStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    const tn = p.openElements.currentTagName;
+
+    if (tn === $.H1 || tn === $.H2 || tn === $.H3 || tn === $.H4 || tn === $.H5 || tn === $.H6) {
+        p.openElements.pop();
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function preStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+    //NOTE: If the next token is a U+000A LINE FEED (LF) character token, then ignore that token and move
+    //on to the next one. (Newlines at the start of pre blocks are ignored as an authoring convenience.)
+    p.skipNextNewLine = true;
+    p.framesetOk = false;
+}
+
+function formStartTagInBody(p, token) {
+    const inTemplate = p.openElements.tmplCount > 0;
+
+    if (!p.formElement || inTemplate) {
+        if (p.openElements.hasInButtonScope($.P)) {
+            p._closePElement();
+        }
+
+        p._insertElement(token, NS.HTML);
+
+        if (!inTemplate) {
+            p.formElement = p.openElements.current;
+        }
+    }
+}
+
+function listItemStartTagInBody(p, token) {
+    p.framesetOk = false;
+
+    const tn = token.tagName;
+
+    for (let i = p.openElements.stackTop; i >= 0; i--) {
+        const element = p.openElements.items[i];
+        const elementTn = p.treeAdapter.getTagName(element);
+        let closeTn = null;
+
+        if (tn === $.LI && elementTn === $.LI) {
+            closeTn = $.LI;
+        } else if ((tn === $.DD || tn === $.DT) && (elementTn === $.DD || elementTn === $.DT)) {
+            closeTn = elementTn;
+        }
+
+        if (closeTn) {
+            p.openElements.generateImpliedEndTagsWithExclusion(closeTn);
+            p.openElements.popUntilTagNamePopped(closeTn);
+            break;
+        }
+
+        if (elementTn !== $.ADDRESS && elementTn !== $.DIV && elementTn !== $.P && p._isSpecialElement(element)) {
+            break;
+        }
+    }
+
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function plaintextStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+    p.tokenizer.state = Tokenizer.MODE.PLAINTEXT;
+}
+
+function buttonStartTagInBody(p, token) {
+    if (p.openElements.hasInScope($.BUTTON)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped($.BUTTON);
+    }
+
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+}
+
+function aStartTagInBody(p, token) {
+    const activeElementEntry = p.activeFormattingElements.getElementEntryInScopeWithTagName($.A);
+
+    if (activeElementEntry) {
+        callAdoptionAgency(p, token);
+        p.openElements.remove(activeElementEntry.element);
+        p.activeFormattingElements.removeEntry(activeElementEntry);
+    }
+
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.pushElement(p.openElements.current, token);
+}
+
+function bStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.pushElement(p.openElements.current, token);
+}
+
+function nobrStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+
+    if (p.openElements.hasInScope($.NOBR)) {
+        callAdoptionAgency(p, token);
+        p._reconstructActiveFormattingElements();
+    }
+
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.pushElement(p.openElements.current, token);
+}
+
+function appletStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.insertMarker();
+    p.framesetOk = false;
+}
+
+function tableStartTagInBody(p, token) {
+    if (
+        p.treeAdapter.getDocumentMode(p.document) !== HTML.DOCUMENT_MODE.QUIRKS &&
+        p.openElements.hasInButtonScope($.P)
+    ) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+    p.insertionMode = IN_TABLE_MODE;
+}
+
+function areaStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._appendElement(token, NS.HTML);
+    p.framesetOk = false;
+    token.ackSelfClosing = true;
+}
+
+function inputStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._appendElement(token, NS.HTML);
+
+    const inputType = Tokenizer.getTokenAttr(token, ATTRS.TYPE);
+
+    if (!inputType || inputType.toLowerCase() !== HIDDEN_INPUT_TYPE) {
+        p.framesetOk = false;
+    }
+
+    token.ackSelfClosing = true;
+}
+
+function paramStartTagInBody(p, token) {
+    p._appendElement(token, NS.HTML);
+    token.ackSelfClosing = true;
+}
+
+function hrStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._appendElement(token, NS.HTML);
+    p.framesetOk = false;
+    token.ackSelfClosing = true;
+}
+
+function imageStartTagInBody(p, token) {
+    token.tagName = $.IMG;
+    areaStartTagInBody(p, token);
+}
+
+function textareaStartTagInBody(p, token) {
+    p._insertElement(token, NS.HTML);
+    //NOTE: If the next token is a U+000A LINE FEED (LF) character token, then ignore that token and move
+    //on to the next one. (Newlines at the start of textarea elements are ignored as an authoring convenience.)
+    p.skipNextNewLine = true;
+    p.tokenizer.state = Tokenizer.MODE.RCDATA;
+    p.originalInsertionMode = p.insertionMode;
+    p.framesetOk = false;
+    p.insertionMode = TEXT_MODE;
+}
+
+function xmpStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._reconstructActiveFormattingElements();
+    p.framesetOk = false;
+    p._switchToTextParsing(token, Tokenizer.MODE.RAWTEXT);
+}
+
+function iframeStartTagInBody(p, token) {
+    p.framesetOk = false;
+    p._switchToTextParsing(token, Tokenizer.MODE.RAWTEXT);
+}
+
+//NOTE: here we assume that we always act as an user agent with enabled plugins, so we parse
+//<noembed> as a rawtext.
+function noembedStartTagInBody(p, token) {
+    p._switchToTextParsing(token, Tokenizer.MODE.RAWTEXT);
+}
+
+function selectStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+
+    if (
+        p.insertionMode === IN_TABLE_MODE ||
+        p.insertionMode === IN_CAPTION_MODE ||
+        p.insertionMode === IN_TABLE_BODY_MODE ||
+        p.insertionMode === IN_ROW_MODE ||
+        p.insertionMode === IN_CELL_MODE
+    ) {
+        p.insertionMode = IN_SELECT_IN_TABLE_MODE;
+    } else {
+        p.insertionMode = IN_SELECT_MODE;
+    }
+}
+
+function optgroupStartTagInBody(p, token) {
+    if (p.openElements.currentTagName === $.OPTION) {
+        p.openElements.pop();
+    }
+
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+}
+
+function rbStartTagInBody(p, token) {
+    if (p.openElements.hasInScope($.RUBY)) {
+        p.openElements.generateImpliedEndTags();
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function rtStartTagInBody(p, token) {
+    if (p.openElements.hasInScope($.RUBY)) {
+        p.openElements.generateImpliedEndTagsWithExclusion($.RTC);
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function menuStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+
+    p._insertElement(token, NS.HTML);
+}
+
+function mathStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+
+    foreignContent.adjustTokenMathMLAttrs(token);
+    foreignContent.adjustTokenXMLAttrs(token);
+
+    if (token.selfClosing) {
+        p._appendElement(token, NS.MATHML);
+    } else {
+        p._insertElement(token, NS.MATHML);
+    }
+
+    token.ackSelfClosing = true;
+}
+
+function svgStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+
+    foreignContent.adjustTokenSVGAttrs(token);
+    foreignContent.adjustTokenXMLAttrs(token);
+
+    if (token.selfClosing) {
+        p._appendElement(token, NS.SVG);
+    } else {
+        p._insertElement(token, NS.SVG);
+    }
+
+    token.ackSelfClosing = true;
+}
+
+function genericStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+}
+
+//OPTIMIZATION: Integer comparisons are low-cost, so we can use very fast tag name length filters here.
+//It's faster than using dictionary.
+function startTagInBody(p, token) {
+    const tn = token.tagName;
+
+    switch (tn.length) {
+        case 1:
+            if (tn === $.I || tn === $.S || tn === $.B || tn === $.U) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.P) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.A) {
+                aStartTagInBody(p, token);
+            } else {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 2:
+            if (tn === $.DL || tn === $.OL || tn === $.UL) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.H1 || tn === $.H2 || tn === $.H3 || tn === $.H4 || tn === $.H5 || tn === $.H6) {
+                numberedHeaderStartTagInBody(p, token);
+            } else if (tn === $.LI || tn === $.DD || tn === $.DT) {
+                listItemStartTagInBody(p, token);
+            } else if (tn === $.EM || tn === $.TT) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.BR) {
+                areaStartTagInBody(p, token);
+            } else if (tn === $.HR) {
+                hrStartTagInBody(p, token);
+            } else if (tn === $.RB) {
+                rbStartTagInBody(p, token);
+            } else if (tn === $.RT || tn === $.RP) {
+                rtStartTagInBody(p, token);
+            } else if (tn !== $.TH && tn !== $.TD && tn !== $.TR) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 3:
+            if (tn === $.DIV || tn === $.DIR || tn === $.NAV) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.PRE) {
+                preStartTagInBody(p, token);
+            } else if (tn === $.BIG) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.IMG || tn === $.WBR) {
+                areaStartTagInBody(p, token);
+            } else if (tn === $.XMP) {
+                xmpStartTagInBody(p, token);
+            } else if (tn === $.SVG) {
+                svgStartTagInBody(p, token);
+            } else if (tn === $.RTC) {
+                rbStartTagInBody(p, token);
+            } else if (tn !== $.COL) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 4:
+            if (tn === $.HTML) {
+                htmlStartTagInBody(p, token);
+            } else if (tn === $.BASE || tn === $.LINK || tn === $.META) {
+                startTagInHead(p, token);
+            } else if (tn === $.BODY) {
+                bodyStartTagInBody(p, token);
+            } else if (tn === $.MAIN || tn === $.MENU) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.FORM) {
+                formStartTagInBody(p, token);
+            } else if (tn === $.CODE || tn === $.FONT) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.NOBR) {
+                nobrStartTagInBody(p, token);
+            } else if (tn === $.AREA) {
+                areaStartTagInBody(p, token);
+            } else if (tn === $.MATH) {
+                mathStartTagInBody(p, token);
+            } else if (tn === $.MENU) {
+                menuStartTagInBody(p, token);
+            } else if (tn !== $.HEAD) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 5:
+            if (tn === $.STYLE || tn === $.TITLE) {
+                startTagInHead(p, token);
+            } else if (tn === $.ASIDE) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.SMALL) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.TABLE) {
+                tableStartTagInBody(p, token);
+            } else if (tn === $.EMBED) {
+                areaStartTagInBody(p, token);
+            } else if (tn === $.INPUT) {
+                inputStartTagInBody(p, token);
+            } else if (tn === $.PARAM || tn === $.TRACK) {
+                paramStartTagInBody(p, token);
+            } else if (tn === $.IMAGE) {
+                imageStartTagInBody(p, token);
+            } else if (tn !== $.FRAME && tn !== $.TBODY && tn !== $.TFOOT && tn !== $.THEAD) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 6:
+            if (tn === $.SCRIPT) {
+                startTagInHead(p, token);
+            } else if (
+                tn === $.CENTER ||
+                tn === $.FIGURE ||
+                tn === $.FOOTER ||
+                tn === $.HEADER ||
+                tn === $.HGROUP ||
+                tn === $.DIALOG
+            ) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.BUTTON) {
+                buttonStartTagInBody(p, token);
+            } else if (tn === $.STRIKE || tn === $.STRONG) {
+                bStartTagInBody(p, token);
+            } else if (tn === $.APPLET || tn === $.OBJECT) {
+                appletStartTagInBody(p, token);
+            } else if (tn === $.KEYGEN) {
+                areaStartTagInBody(p, token);
+            } else if (tn === $.SOURCE) {
+                paramStartTagInBody(p, token);
+            } else if (tn === $.IFRAME) {
+                iframeStartTagInBody(p, token);
+            } else if (tn === $.SELECT) {
+                selectStartTagInBody(p, token);
+            } else if (tn === $.OPTION) {
+                optgroupStartTagInBody(p, token);
+            } else {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 7:
+            if (tn === $.BGSOUND) {
+                startTagInHead(p, token);
+            } else if (
+                tn === $.DETAILS ||
+                tn === $.ADDRESS ||
+                tn === $.ARTICLE ||
+                tn === $.SECTION ||
+                tn === $.SUMMARY
+            ) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.LISTING) {
+                preStartTagInBody(p, token);
+            } else if (tn === $.MARQUEE) {
+                appletStartTagInBody(p, token);
+            } else if (tn === $.NOEMBED) {
+                noembedStartTagInBody(p, token);
+            } else if (tn !== $.CAPTION) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 8:
+            if (tn === $.BASEFONT) {
+                startTagInHead(p, token);
+            } else if (tn === $.FRAMESET) {
+                framesetStartTagInBody(p, token);
+            } else if (tn === $.FIELDSET) {
+                addressStartTagInBody(p, token);
+            } else if (tn === $.TEXTAREA) {
+                textareaStartTagInBody(p, token);
+            } else if (tn === $.TEMPLATE) {
+                startTagInHead(p, token);
+            } else if (tn === $.NOSCRIPT) {
+                if (p.options.scriptingEnabled) {
+                    noembedStartTagInBody(p, token);
+                } else {
+                    genericStartTagInBody(p, token);
+                }
+            } else if (tn === $.OPTGROUP) {
+                optgroupStartTagInBody(p, token);
+            } else if (tn !== $.COLGROUP) {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 9:
+            if (tn === $.PLAINTEXT) {
+                plaintextStartTagInBody(p, token);
+            } else {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        case 10:
+            if (tn === $.BLOCKQUOTE || tn === $.FIGCAPTION) {
+                addressStartTagInBody(p, token);
+            } else {
+                genericStartTagInBody(p, token);
+            }
+
+            break;
+
+        default:
+            genericStartTagInBody(p, token);
+    }
+}
+
+function bodyEndTagInBody(p) {
+    if (p.openElements.hasInScope($.BODY)) {
+        p.insertionMode = AFTER_BODY_MODE;
+    }
+}
+
+function htmlEndTagInBody(p, token) {
+    if (p.openElements.hasInScope($.BODY)) {
+        p.insertionMode = AFTER_BODY_MODE;
+        p._processToken(token);
+    }
+}
+
+function addressEndTagInBody(p, token) {
+    const tn = token.tagName;
+
+    if (p.openElements.hasInScope(tn)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped(tn);
+    }
+}
+
+function formEndTagInBody(p) {
+    const inTemplate = p.openElements.tmplCount > 0;
+    const formElement = p.formElement;
+
+    if (!inTemplate) {
+        p.formElement = null;
+    }
+
+    if ((formElement || inTemplate) && p.openElements.hasInScope($.FORM)) {
+        p.openElements.generateImpliedEndTags();
+
+        if (inTemplate) {
+            p.openElements.popUntilTagNamePopped($.FORM);
+        } else {
+            p.openElements.remove(formElement);
+        }
+    }
+}
+
+function pEndTagInBody(p) {
+    if (!p.openElements.hasInButtonScope($.P)) {
+        p._insertFakeElement($.P);
+    }
+
+    p._closePElement();
+}
+
+function liEndTagInBody(p) {
+    if (p.openElements.hasInListItemScope($.LI)) {
+        p.openElements.generateImpliedEndTagsWithExclusion($.LI);
+        p.openElements.popUntilTagNamePopped($.LI);
+    }
+}
+
+function ddEndTagInBody(p, token) {
+    const tn = token.tagName;
+
+    if (p.openElements.hasInScope(tn)) {
+        p.openElements.generateImpliedEndTagsWithExclusion(tn);
+        p.openElements.popUntilTagNamePopped(tn);
+    }
+}
+
+function numberedHeaderEndTagInBody(p) {
+    if (p.openElements.hasNumberedHeaderInScope()) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilNumberedHeaderPopped();
+    }
+}
+
+function appletEndTagInBody(p, token) {
+    const tn = token.tagName;
+
+    if (p.openElements.hasInScope(tn)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped(tn);
+        p.activeFormattingElements.clearToLastMarker();
+    }
+}
+
+function brEndTagInBody(p) {
+    p._reconstructActiveFormattingElements();
+    p._insertFakeElement($.BR);
+    p.openElements.pop();
+    p.framesetOk = false;
+}
+
+function genericEndTagInBody(p, token) {
+    const tn = token.tagName;
+
+    for (let i = p.openElements.stackTop; i > 0; i--) {
+        const element = p.openElements.items[i];
+
+        if (p.treeAdapter.getTagName(element) === tn) {
+            p.openElements.generateImpliedEndTagsWithExclusion(tn);
+            p.openElements.popUntilElementPopped(element);
+            break;
+        }
+
+        if (p._isSpecialElement(element)) {
+            break;
+        }
+    }
+}
+
+//OPTIMIZATION: Integer comparisons are low-cost, so we can use very fast tag name length filters here.
+//It's faster than using dictionary.
+function endTagInBody(p, token) {
+    const tn = token.tagName;
+
+    switch (tn.length) {
+        case 1:
+            if (tn === $.A || tn === $.B || tn === $.I || tn === $.S || tn === $.U) {
+                callAdoptionAgency(p, token);
+            } else if (tn === $.P) {
+                pEndTagInBody(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 2:
+            if (tn === $.DL || tn === $.UL || tn === $.OL) {
+                addressEndTagInBody(p, token);
+            } else if (tn === $.LI) {
+                liEndTagInBody(p, token);
+            } else if (tn === $.DD || tn === $.DT) {
+                ddEndTagInBody(p, token);
+            } else if (tn === $.H1 || tn === $.H2 || tn === $.H3 || tn === $.H4 || tn === $.H5 || tn === $.H6) {
+                numberedHeaderEndTagInBody(p, token);
+            } else if (tn === $.BR) {
+                brEndTagInBody(p, token);
+            } else if (tn === $.EM || tn === $.TT) {
+                callAdoptionAgency(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 3:
+            if (tn === $.BIG) {
+                callAdoptionAgency(p, token);
+            } else if (tn === $.DIR || tn === $.DIV || tn === $.NAV || tn === $.PRE) {
+                addressEndTagInBody(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 4:
+            if (tn === $.BODY) {
+                bodyEndTagInBody(p, token);
+            } else if (tn === $.HTML) {
+                htmlEndTagInBody(p, token);
+            } else if (tn === $.FORM) {
+                formEndTagInBody(p, token);
+            } else if (tn === $.CODE || tn === $.FONT || tn === $.NOBR) {
+                callAdoptionAgency(p, token);
+            } else if (tn === $.MAIN || tn === $.MENU) {
+                addressEndTagInBody(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 5:
+            if (tn === $.ASIDE) {
+                addressEndTagInBody(p, token);
+            } else if (tn === $.SMALL) {
+                callAdoptionAgency(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 6:
+            if (
+                tn === $.CENTER ||
+                tn === $.FIGURE ||
+                tn === $.FOOTER ||
+                tn === $.HEADER ||
+                tn === $.HGROUP ||
+                tn === $.DIALOG
+            ) {
+                addressEndTagInBody(p, token);
+            } else if (tn === $.APPLET || tn === $.OBJECT) {
+                appletEndTagInBody(p, token);
+            } else if (tn === $.STRIKE || tn === $.STRONG) {
+                callAdoptionAgency(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 7:
+            if (
+                tn === $.ADDRESS ||
+                tn === $.ARTICLE ||
+                tn === $.DETAILS ||
+                tn === $.SECTION ||
+                tn === $.SUMMARY ||
+                tn === $.LISTING
+            ) {
+                addressEndTagInBody(p, token);
+            } else if (tn === $.MARQUEE) {
+                appletEndTagInBody(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 8:
+            if (tn === $.FIELDSET) {
+                addressEndTagInBody(p, token);
+            } else if (tn === $.TEMPLATE) {
+                endTagInHead(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        case 10:
+            if (tn === $.BLOCKQUOTE || tn === $.FIGCAPTION) {
+                addressEndTagInBody(p, token);
+            } else {
+                genericEndTagInBody(p, token);
+            }
+
+            break;
+
+        default:
+            genericEndTagInBody(p, token);
+    }
+}
+
+function eofInBody(p, token) {
+    if (p.tmplInsertionModeStackTop > -1) {
+        eofInTemplate(p, token);
+    } else {
+        p.stopped = true;
+    }
+}
+
+// The "text" insertion mode
+//------------------------------------------------------------------
+function endTagInText(p, token) {
+    if (token.tagName === $.SCRIPT) {
+        p.pendingScript = p.openElements.current;
+    }
+
+    p.openElements.pop();
+    p.insertionMode = p.originalInsertionMode;
+}
+
+function eofInText(p, token) {
+    p._err(ERR.eofInElementThatCanContainOnlyText);
+    p.openElements.pop();
+    p.insertionMode = p.originalInsertionMode;
+    p._processToken(token);
+}
+
+// The "in table" insertion mode
+//------------------------------------------------------------------
+function characterInTable(p, token) {
+    const curTn = p.openElements.currentTagName;
+
+    if (curTn === $.TABLE || curTn === $.TBODY || curTn === $.TFOOT || curTn === $.THEAD || curTn === $.TR) {
+        p.pendingCharacterTokens = [];
+        p.hasNonWhitespacePendingCharacterToken = false;
+        p.originalInsertionMode = p.insertionMode;
+        p.insertionMode = IN_TABLE_TEXT_MODE;
+        p._processToken(token);
+    } else {
+        tokenInTable(p, token);
+    }
+}
+
+function captionStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p.activeFormattingElements.insertMarker();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = IN_CAPTION_MODE;
+}
+
+function colgroupStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = IN_COLUMN_GROUP_MODE;
+}
+
+function colStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertFakeElement($.COLGROUP);
+    p.insertionMode = IN_COLUMN_GROUP_MODE;
+    p._processToken(token);
+}
+
+function tbodyStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = IN_TABLE_BODY_MODE;
+}
+
+function tdStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertFakeElement($.TBODY);
+    p.insertionMode = IN_TABLE_BODY_MODE;
+    p._processToken(token);
+}
+
+function tableStartTagInTable(p, token) {
+    if (p.openElements.hasInTableScope($.TABLE)) {
+        p.openElements.popUntilTagNamePopped($.TABLE);
+        p._resetInsertionMode();
+        p._processToken(token);
+    }
+}
+
+function inputStartTagInTable(p, token) {
+    const inputType = Tokenizer.getTokenAttr(token, ATTRS.TYPE);
+
+    if (inputType && inputType.toLowerCase() === HIDDEN_INPUT_TYPE) {
+        p._appendElement(token, NS.HTML);
+    } else {
+        tokenInTable(p, token);
+    }
+
+    token.ackSelfClosing = true;
+}
+
+function formStartTagInTable(p, token) {
+    if (!p.formElement && p.openElements.tmplCount === 0) {
+        p._insertElement(token, NS.HTML);
+        p.formElement = p.openElements.current;
+        p.openElements.pop();
+    }
+}
+
+function startTagInTable(p, token) {
+    const tn = token.tagName;
+
+    switch (tn.length) {
+        case 2:
+            if (tn === $.TD || tn === $.TH || tn === $.TR) {
+                tdStartTagInTable(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 3:
+            if (tn === $.COL) {
+                colStartTagInTable(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 4:
+            if (tn === $.FORM) {
+                formStartTagInTable(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 5:
+            if (tn === $.TABLE) {
+                tableStartTagInTable(p, token);
+            } else if (tn === $.STYLE) {
+                startTagInHead(p, token);
+            } else if (tn === $.TBODY || tn === $.TFOOT || tn === $.THEAD) {
+                tbodyStartTagInTable(p, token);
+            } else if (tn === $.INPUT) {
+                inputStartTagInTable(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 6:
+            if (tn === $.SCRIPT) {
+                startTagInHead(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 7:
+            if (tn === $.CAPTION) {
+                captionStartTagInTable(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        case 8:
+            if (tn === $.COLGROUP) {
+                colgroupStartTagInTable(p, token);
+            } else if (tn === $.TEMPLATE) {
+                startTagInHead(p, token);
+            } else {
+                tokenInTable(p, token);
+            }
+
+            break;
+
+        default:
+            tokenInTable(p, token);
+    }
+}
+
+function endTagInTable(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TABLE) {
+        if (p.openElements.hasInTableScope($.TABLE)) {
+            p.openElements.popUntilTagNamePopped($.TABLE);
+            p._resetInsertionMode();
+        }
+    } else if (tn === $.TEMPLATE) {
+        endTagInHead(p, token);
+    } else if (
+        tn !== $.BODY &&
+        tn !== $.CAPTION &&
+        tn !== $.COL &&
+        tn !== $.COLGROUP &&
+        tn !== $.HTML &&
+        tn !== $.TBODY &&
+        tn !== $.TD &&
+        tn !== $.TFOOT &&
+        tn !== $.TH &&
+        tn !== $.THEAD &&
+        tn !== $.TR
+    ) {
+        tokenInTable(p, token);
+    }
+}
+
+function tokenInTable(p, token) {
+    const savedFosterParentingState = p.fosterParentingEnabled;
+
+    p.fosterParentingEnabled = true;
+    p._processTokenInBodyMode(token);
+    p.fosterParentingEnabled = savedFosterParentingState;
+}
+
+// The "in table text" insertion mode
+//------------------------------------------------------------------
+function whitespaceCharacterInTableText(p, token) {
+    p.pendingCharacterTokens.push(token);
+}
+
+function characterInTableText(p, token) {
+    p.pendingCharacterTokens.push(token);
+    p.hasNonWhitespacePendingCharacterToken = true;
+}
+
+function tokenInTableText(p, token) {
+    let i = 0;
+
+    if (p.hasNonWhitespacePendingCharacterToken) {
+        for (; i < p.pendingCharacterTokens.length; i++) {
+            tokenInTable(p, p.pendingCharacterTokens[i]);
+        }
+    } else {
+        for (; i < p.pendingCharacterTokens.length; i++) {
+            p._insertCharacters(p.pendingCharacterTokens[i]);
+        }
+    }
+
+    p.insertionMode = p.originalInsertionMode;
+    p._processToken(token);
+}
+
+// The "in caption" insertion mode
+//------------------------------------------------------------------
+function startTagInCaption(p, token) {
+    const tn = token.tagName;
+
+    if (
+        tn === $.CAPTION ||
+        tn === $.COL ||
+        tn === $.COLGROUP ||
+        tn === $.TBODY ||
+        tn === $.TD ||
+        tn === $.TFOOT ||
+        tn === $.TH ||
+        tn === $.THEAD ||
+        tn === $.TR
+    ) {
+        if (p.openElements.hasInTableScope($.CAPTION)) {
+            p.openElements.generateImpliedEndTags();
+            p.openElements.popUntilTagNamePopped($.CAPTION);
+            p.activeFormattingElements.clearToLastMarker();
+            p.insertionMode = IN_TABLE_MODE;
+            p._processToken(token);
+        }
+    } else {
+        startTagInBody(p, token);
+    }
+}
+
+function endTagInCaption(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.CAPTION || tn === $.TABLE) {
+        if (p.openElements.hasInTableScope($.CAPTION)) {
+            p.openElements.generateImpliedEndTags();
+            p.openElements.popUntilTagNamePopped($.CAPTION);
+            p.activeFormattingElements.clearToLastMarker();
+            p.insertionMode = IN_TABLE_MODE;
+
+            if (tn === $.TABLE) {
+                p._processToken(token);
+            }
+        }
+    } else if (
+        tn !== $.BODY &&
+        tn !== $.COL &&
+        tn !== $.COLGROUP &&
+        tn !== $.HTML &&
+        tn !== $.TBODY &&
+        tn !== $.TD &&
+        tn !== $.TFOOT &&
+        tn !== $.TH &&
+        tn !== $.THEAD &&
+        tn !== $.TR
+    ) {
+        endTagInBody(p, token);
+    }
+}
+
+// The "in column group" insertion mode
+//------------------------------------------------------------------
+function startTagInColumnGroup(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.COL) {
+        p._appendElement(token, NS.HTML);
+        token.ackSelfClosing = true;
+    } else if (tn === $.TEMPLATE) {
+        startTagInHead(p, token);
+    } else {
+        tokenInColumnGroup(p, token);
+    }
+}
+
+function endTagInColumnGroup(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.COLGROUP) {
+        if (p.openElements.currentTagName === $.COLGROUP) {
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_MODE;
+        }
+    } else if (tn === $.TEMPLATE) {
+        endTagInHead(p, token);
+    } else if (tn !== $.COL) {
+        tokenInColumnGroup(p, token);
+    }
+}
+
+function tokenInColumnGroup(p, token) {
+    if (p.openElements.currentTagName === $.COLGROUP) {
+        p.openElements.pop();
+        p.insertionMode = IN_TABLE_MODE;
+        p._processToken(token);
+    }
+}
+
+// The "in table body" insertion mode
+//------------------------------------------------------------------
+function startTagInTableBody(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TR) {
+        p.openElements.clearBackToTableBodyContext();
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = IN_ROW_MODE;
+    } else if (tn === $.TH || tn === $.TD) {
+        p.openElements.clearBackToTableBodyContext();
+        p._insertFakeElement($.TR);
+        p.insertionMode = IN_ROW_MODE;
+        p._processToken(token);
+    } else if (
+        tn === $.CAPTION ||
+        tn === $.COL ||
+        tn === $.COLGROUP ||
+        tn === $.TBODY ||
+        tn === $.TFOOT ||
+        tn === $.THEAD
+    ) {
+        if (p.openElements.hasTableBodyContextInTableScope()) {
+            p.openElements.clearBackToTableBodyContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_MODE;
+            p._processToken(token);
+        }
+    } else {
+        startTagInTable(p, token);
+    }
+}
+
+function endTagInTableBody(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TBODY || tn === $.TFOOT || tn === $.THEAD) {
+        if (p.openElements.hasInTableScope(tn)) {
+            p.openElements.clearBackToTableBodyContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_MODE;
+        }
+    } else if (tn === $.TABLE) {
+        if (p.openElements.hasTableBodyContextInTableScope()) {
+            p.openElements.clearBackToTableBodyContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_MODE;
+            p._processToken(token);
+        }
+    } else if (
+        (tn !== $.BODY && tn !== $.CAPTION && tn !== $.COL && tn !== $.COLGROUP) ||
+        (tn !== $.HTML && tn !== $.TD && tn !== $.TH && tn !== $.TR)
+    ) {
+        endTagInTable(p, token);
+    }
+}
+
+// The "in row" insertion mode
+//------------------------------------------------------------------
+function startTagInRow(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TH || tn === $.TD) {
+        p.openElements.clearBackToTableRowContext();
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = IN_CELL_MODE;
+        p.activeFormattingElements.insertMarker();
+    } else if (
+        tn === $.CAPTION ||
+        tn === $.COL ||
+        tn === $.COLGROUP ||
+        tn === $.TBODY ||
+        tn === $.TFOOT ||
+        tn === $.THEAD ||
+        tn === $.TR
+    ) {
+        if (p.openElements.hasInTableScope($.TR)) {
+            p.openElements.clearBackToTableRowContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_BODY_MODE;
+            p._processToken(token);
+        }
+    } else {
+        startTagInTable(p, token);
+    }
+}
+
+function endTagInRow(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TR) {
+        if (p.openElements.hasInTableScope($.TR)) {
+            p.openElements.clearBackToTableRowContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_BODY_MODE;
+        }
+    } else if (tn === $.TABLE) {
+        if (p.openElements.hasInTableScope($.TR)) {
+            p.openElements.clearBackToTableRowContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_BODY_MODE;
+            p._processToken(token);
+        }
+    } else if (tn === $.TBODY || tn === $.TFOOT || tn === $.THEAD) {
+        if (p.openElements.hasInTableScope(tn) || p.openElements.hasInTableScope($.TR)) {
+            p.openElements.clearBackToTableRowContext();
+            p.openElements.pop();
+            p.insertionMode = IN_TABLE_BODY_MODE;
+            p._processToken(token);
+        }
+    } else if (
+        (tn !== $.BODY && tn !== $.CAPTION && tn !== $.COL && tn !== $.COLGROUP) ||
+        (tn !== $.HTML && tn !== $.TD && tn !== $.TH)
+    ) {
+        endTagInTable(p, token);
+    }
+}
+
+// The "in cell" insertion mode
+//------------------------------------------------------------------
+function startTagInCell(p, token) {
+    const tn = token.tagName;
+
+    if (
+        tn === $.CAPTION ||
+        tn === $.COL ||
+        tn === $.COLGROUP ||
+        tn === $.TBODY ||
+        tn === $.TD ||
+        tn === $.TFOOT ||
+        tn === $.TH ||
+        tn === $.THEAD ||
+        tn === $.TR
+    ) {
+        if (p.openElements.hasInTableScope($.TD) || p.openElements.hasInTableScope($.TH)) {
+            p._closeTableCell();
+            p._processToken(token);
+        }
+    } else {
+        startTagInBody(p, token);
+    }
+}
+
+function endTagInCell(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.TD || tn === $.TH) {
+        if (p.openElements.hasInTableScope(tn)) {
+            p.openElements.generateImpliedEndTags();
+            p.openElements.popUntilTagNamePopped(tn);
+            p.activeFormattingElements.clearToLastMarker();
+            p.insertionMode = IN_ROW_MODE;
+        }
+    } else if (tn === $.TABLE || tn === $.TBODY || tn === $.TFOOT || tn === $.THEAD || tn === $.TR) {
+        if (p.openElements.hasInTableScope(tn)) {
+            p._closeTableCell();
+            p._processToken(token);
+        }
+    } else if (tn !== $.BODY && tn !== $.CAPTION && tn !== $.COL && tn !== $.COLGROUP && tn !== $.HTML) {
+        endTagInBody(p, token);
+    }
+}
+
+// The "in select" insertion mode
+//------------------------------------------------------------------
+function startTagInSelect(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.OPTION) {
+        if (p.openElements.currentTagName === $.OPTION) {
+            p.openElements.pop();
+        }
+
+        p._insertElement(token, NS.HTML);
+    } else if (tn === $.OPTGROUP) {
+        if (p.openElements.currentTagName === $.OPTION) {
+            p.openElements.pop();
+        }
+
+        if (p.openElements.currentTagName === $.OPTGROUP) {
+            p.openElements.pop();
+        }
+
+        p._insertElement(token, NS.HTML);
+    } else if (tn === $.INPUT || tn === $.KEYGEN || tn === $.TEXTAREA || tn === $.SELECT) {
+        if (p.openElements.hasInSelectScope($.SELECT)) {
+            p.openElements.popUntilTagNamePopped($.SELECT);
+            p._resetInsertionMode();
+
+            if (tn !== $.SELECT) {
+                p._processToken(token);
+            }
+        }
+    } else if (tn === $.SCRIPT || tn === $.TEMPLATE) {
+        startTagInHead(p, token);
+    }
+}
+
+function endTagInSelect(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.OPTGROUP) {
+        const prevOpenElement = p.openElements.items[p.openElements.stackTop - 1];
+        const prevOpenElementTn = prevOpenElement && p.treeAdapter.getTagName(prevOpenElement);
+
+        if (p.openElements.currentTagName === $.OPTION && prevOpenElementTn === $.OPTGROUP) {
+            p.openElements.pop();
+        }
+
+        if (p.openElements.currentTagName === $.OPTGROUP) {
+            p.openElements.pop();
+        }
+    } else if (tn === $.OPTION) {
+        if (p.openElements.currentTagName === $.OPTION) {
+            p.openElements.pop();
+        }
+    } else if (tn === $.SELECT && p.openElements.hasInSelectScope($.SELECT)) {
+        p.openElements.popUntilTagNamePopped($.SELECT);
+        p._resetInsertionMode();
+    } else if (tn === $.TEMPLATE) {
+        endTagInHead(p, token);
+    }
+}
+
+//12.2.5.4.17 The "in select in table" insertion mode
+//------------------------------------------------------------------
+function startTagInSelectInTable(p, token) {
+    const tn = token.tagName;
+
+    if (
+        tn === $.CAPTION ||
+        tn === $.TABLE ||
+        tn === $.TBODY ||
+        tn === $.TFOOT ||
+        tn === $.THEAD ||
+        tn === $.TR ||
+        tn === $.TD ||
+        tn === $.TH
+    ) {
+        p.openElements.popUntilTagNamePopped($.SELECT);
+        p._resetInsertionMode();
+        p._processToken(token);
+    } else {
+        startTagInSelect(p, token);
+    }
+}
+
+function endTagInSelectInTable(p, token) {
+    const tn = token.tagName;
+
+    if (
+        tn === $.CAPTION ||
+        tn === $.TABLE ||
+        tn === $.TBODY ||
+        tn === $.TFOOT ||
+        tn === $.THEAD ||
+        tn === $.TR ||
+        tn === $.TD ||
+        tn === $.TH
+    ) {
+        if (p.openElements.hasInTableScope(tn)) {
+            p.openElements.popUntilTagNamePopped($.SELECT);
+            p._resetInsertionMode();
+            p._processToken(token);
+        }
+    } else {
+        endTagInSelect(p, token);
+    }
+}
+
+// The "in template" insertion mode
+//------------------------------------------------------------------
+function startTagInTemplate(p, token) {
+    const tn = token.tagName;
+
+    if (
+        tn === $.BASE ||
+        tn === $.BASEFONT ||
+        tn === $.BGSOUND ||
+        tn === $.LINK ||
+        tn === $.META ||
+        tn === $.NOFRAMES ||
+        tn === $.SCRIPT ||
+        tn === $.STYLE ||
+        tn === $.TEMPLATE ||
+        tn === $.TITLE
+    ) {
+        startTagInHead(p, token);
+    } else {
+        const newInsertionMode = TEMPLATE_INSERTION_MODE_SWITCH_MAP[tn] || IN_BODY_MODE;
+
+        p._popTmplInsertionMode();
+        p._pushTmplInsertionMode(newInsertionMode);
+        p.insertionMode = newInsertionMode;
+        p._processToken(token);
+    }
+}
+
+function endTagInTemplate(p, token) {
+    if (token.tagName === $.TEMPLATE) {
+        endTagInHead(p, token);
+    }
+}
+
+function eofInTemplate(p, token) {
+    if (p.openElements.tmplCount > 0) {
+        p.openElements.popUntilTagNamePopped($.TEMPLATE);
+        p.activeFormattingElements.clearToLastMarker();
+        p._popTmplInsertionMode();
+        p._resetInsertionMode();
+        p._processToken(token);
+    } else {
+        p.stopped = true;
+    }
+}
+
+// The "after body" insertion mode
+//------------------------------------------------------------------
+function startTagAfterBody(p, token) {
+    if (token.tagName === $.HTML) {
+        startTagInBody(p, token);
+    } else {
+        tokenAfterBody(p, token);
+    }
+}
+
+function endTagAfterBody(p, token) {
+    if (token.tagName === $.HTML) {
+        if (!p.fragmentContext) {
+            p.insertionMode = AFTER_AFTER_BODY_MODE;
+        }
+    } else {
+        tokenAfterBody(p, token);
+    }
+}
+
+function tokenAfterBody(p, token) {
+    p.insertionMode = IN_BODY_MODE;
+    p._processToken(token);
+}
+
+// The "in frameset" insertion mode
+//------------------------------------------------------------------
+function startTagInFrameset(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.FRAMESET) {
+        p._insertElement(token, NS.HTML);
+    } else if (tn === $.FRAME) {
+        p._appendElement(token, NS.HTML);
+        token.ackSelfClosing = true;
+    } else if (tn === $.NOFRAMES) {
+        startTagInHead(p, token);
+    }
+}
+
+function endTagInFrameset(p, token) {
+    if (token.tagName === $.FRAMESET && !p.openElements.isRootHtmlElementCurrent()) {
+        p.openElements.pop();
+
+        if (!p.fragmentContext && p.openElements.currentTagName !== $.FRAMESET) {
+            p.insertionMode = AFTER_FRAMESET_MODE;
+        }
+    }
+}
+
+// The "after frameset" insertion mode
+//------------------------------------------------------------------
+function startTagAfterFrameset(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.NOFRAMES) {
+        startTagInHead(p, token);
+    }
+}
+
+function endTagAfterFrameset(p, token) {
+    if (token.tagName === $.HTML) {
+        p.insertionMode = AFTER_AFTER_FRAMESET_MODE;
+    }
+}
+
+// The "after after body" insertion mode
+//------------------------------------------------------------------
+function startTagAfterAfterBody(p, token) {
+    if (token.tagName === $.HTML) {
+        startTagInBody(p, token);
+    } else {
+        tokenAfterAfterBody(p, token);
+    }
+}
+
+function tokenAfterAfterBody(p, token) {
+    p.insertionMode = IN_BODY_MODE;
+    p._processToken(token);
+}
+
+// The "after after frameset" insertion mode
+//------------------------------------------------------------------
+function startTagAfterAfterFrameset(p, token) {
+    const tn = token.tagName;
+
+    if (tn === $.HTML) {
+        startTagInBody(p, token);
+    } else if (tn === $.NOFRAMES) {
+        startTagInHead(p, token);
+    }
+}
+
+// The rules for parsing tokens in foreign content
+//------------------------------------------------------------------
+function nullCharacterInForeignContent(p, token) {
+    token.chars = unicode.REPLACEMENT_CHARACTER;
+    p._insertCharacters(token);
+}
+
+function characterInForeignContent(p, token) {
+    p._insertCharacters(token);
+    p.framesetOk = false;
+}
+
+function startTagInForeignContent(p, token) {
+    if (foreignContent.causesExit(token) && !p.fragmentContext) {
+        while (
+            p.treeAdapter.getNamespaceURI(p.openElements.current) !== NS.HTML &&
+            !p._isIntegrationPoint(p.openElements.current)
+        ) {
+            p.openElements.pop();
+        }
+
+        p._processToken(token);
+    } else {
+        const current = p._getAdjustedCurrentElement();
+        const currentNs = p.treeAdapter.getNamespaceURI(current);
+
+        if (currentNs === NS.MATHML) {
+            foreignContent.adjustTokenMathMLAttrs(token);
+        } else if (currentNs === NS.SVG) {
+            foreignContent.adjustTokenSVGTagName(token);
+            foreignContent.adjustTokenSVGAttrs(token);
+        }
+
+        foreignContent.adjustTokenXMLAttrs(token);
+
+        if (token.selfClosing) {
+            p._appendElement(token, currentNs);
+        } else {
+            p._insertElement(token, currentNs);
+        }
+
+        token.ackSelfClosing = true;
+    }
+}
+
+function endTagInForeignContent(p, token) {
+    for (let i = p.openElements.stackTop; i > 0; i--) {
+        const element = p.openElements.items[i];
+
+        if (p.treeAdapter.getNamespaceURI(element) === NS.HTML) {
+            p._processToken(token);
+            break;
+        }
+
+        if (p.treeAdapter.getTagName(element).toLowerCase() === token.tagName) {
+            p.openElements.popUntilElementPopped(element);
+            break;
+        }
+    }
+}
-- 
cgit