From 76cb9c2a39d477a64824a985ade40507e3bbade1 Mon Sep 17 00:00:00 2001
From: Adam Mathes <adam@adammathes.com>
Date: Fri, 13 Feb 2026 21:34:48 -0800
Subject: feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

---
 vanilla/node_modules/parse5/dist/parser/index.js | 3245 ++++++++++++++++++++++
 1 file changed, 3245 insertions(+)
 create mode 100644 vanilla/node_modules/parse5/dist/parser/index.js

(limited to 'vanilla/node_modules/parse5/dist/parser/index.js')

diff --git a/vanilla/node_modules/parse5/dist/parser/index.js b/vanilla/node_modules/parse5/dist/parser/index.js
new file mode 100644
index 0000000..fdd2562
--- /dev/null
+++ b/vanilla/node_modules/parse5/dist/parser/index.js
@@ -0,0 +1,3245 @@
+import { Tokenizer, TokenizerMode } from '../tokenizer/index.js';
+import { OpenElementStack } from './open-element-stack.js';
+import { FormattingElementList, EntryType } from './formatting-element-list.js';
+import { defaultTreeAdapter } from '../tree-adapters/default.js';
+import * as doctype from '../common/doctype.js';
+import * as foreignContent from '../common/foreign-content.js';
+import { ERR } from '../common/error-codes.js';
+import * as unicode from '../common/unicode.js';
+import { TAG_ID as $, TAG_NAMES as TN, NS, ATTRS, SPECIAL_ELEMENTS, DOCUMENT_MODE, NUMBERED_HEADERS, getTagID, } from '../common/html.js';
+import { TokenType, getTokenAttr, } from '../common/token.js';
+//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
+var InsertionMode;
+(function (InsertionMode) {
+    InsertionMode[InsertionMode["INITIAL"] = 0] = "INITIAL";
+    InsertionMode[InsertionMode["BEFORE_HTML"] = 1] = "BEFORE_HTML";
+    InsertionMode[InsertionMode["BEFORE_HEAD"] = 2] = "BEFORE_HEAD";
+    InsertionMode[InsertionMode["IN_HEAD"] = 3] = "IN_HEAD";
+    InsertionMode[InsertionMode["IN_HEAD_NO_SCRIPT"] = 4] = "IN_HEAD_NO_SCRIPT";
+    InsertionMode[InsertionMode["AFTER_HEAD"] = 5] = "AFTER_HEAD";
+    InsertionMode[InsertionMode["IN_BODY"] = 6] = "IN_BODY";
+    InsertionMode[InsertionMode["TEXT"] = 7] = "TEXT";
+    InsertionMode[InsertionMode["IN_TABLE"] = 8] = "IN_TABLE";
+    InsertionMode[InsertionMode["IN_TABLE_TEXT"] = 9] = "IN_TABLE_TEXT";
+    InsertionMode[InsertionMode["IN_CAPTION"] = 10] = "IN_CAPTION";
+    InsertionMode[InsertionMode["IN_COLUMN_GROUP"] = 11] = "IN_COLUMN_GROUP";
+    InsertionMode[InsertionMode["IN_TABLE_BODY"] = 12] = "IN_TABLE_BODY";
+    InsertionMode[InsertionMode["IN_ROW"] = 13] = "IN_ROW";
+    InsertionMode[InsertionMode["IN_CELL"] = 14] = "IN_CELL";
+    InsertionMode[InsertionMode["IN_SELECT"] = 15] = "IN_SELECT";
+    InsertionMode[InsertionMode["IN_SELECT_IN_TABLE"] = 16] = "IN_SELECT_IN_TABLE";
+    InsertionMode[InsertionMode["IN_TEMPLATE"] = 17] = "IN_TEMPLATE";
+    InsertionMode[InsertionMode["AFTER_BODY"] = 18] = "AFTER_BODY";
+    InsertionMode[InsertionMode["IN_FRAMESET"] = 19] = "IN_FRAMESET";
+    InsertionMode[InsertionMode["AFTER_FRAMESET"] = 20] = "AFTER_FRAMESET";
+    InsertionMode[InsertionMode["AFTER_AFTER_BODY"] = 21] = "AFTER_AFTER_BODY";
+    InsertionMode[InsertionMode["AFTER_AFTER_FRAMESET"] = 22] = "AFTER_AFTER_FRAMESET";
+})(InsertionMode || (InsertionMode = {}));
+const BASE_LOC = {
+    startLine: -1,
+    startCol: -1,
+    startOffset: -1,
+    endLine: -1,
+    endCol: -1,
+    endOffset: -1,
+};
+const TABLE_STRUCTURE_TAGS = new Set([$.TABLE, $.TBODY, $.TFOOT, $.THEAD, $.TR]);
+const defaultParserOptions = {
+    scriptingEnabled: true,
+    sourceCodeLocationInfo: false,
+    treeAdapter: defaultTreeAdapter,
+    onParseError: null,
+};
+//Parser
+export class Parser {
+    constructor(options, document, 
+    /** @internal */
+    fragmentContext = null, 
+    /** @internal */
+    scriptHandler = null) {
+        this.fragmentContext = fragmentContext;
+        this.scriptHandler = scriptHandler;
+        this.currentToken = null;
+        this.stopped = false;
+        /** @internal */
+        this.insertionMode = InsertionMode.INITIAL;
+        /** @internal */
+        this.originalInsertionMode = InsertionMode.INITIAL;
+        /** @internal */
+        this.headElement = null;
+        /** @internal */
+        this.formElement = null;
+        /** Indicates that the current node is not an element in the HTML namespace */
+        this.currentNotInHTML = false;
+        /**
+         * The template insertion mode stack is maintained from the left.
+         * Ie. the topmost element will always have index 0.
+         *
+         * @internal
+         */
+        this.tmplInsertionModeStack = [];
+        /** @internal */
+        this.pendingCharacterTokens = [];
+        /** @internal */
+        this.hasNonWhitespacePendingCharacterToken = false;
+        /** @internal */
+        this.framesetOk = true;
+        /** @internal */
+        this.skipNextNewLine = false;
+        /** @internal */
+        this.fosterParentingEnabled = false;
+        this.options = {
+            ...defaultParserOptions,
+            ...options,
+        };
+        this.treeAdapter = this.options.treeAdapter;
+        this.onParseError = this.options.onParseError;
+        // Always enable location info if we report parse errors.
+        if (this.onParseError) {
+            this.options.sourceCodeLocationInfo = true;
+        }
+        this.document = document !== null && document !== void 0 ? document : this.treeAdapter.createDocument();
+        this.tokenizer = new Tokenizer(this.options, this);
+        this.activeFormattingElements = new FormattingElementList(this.treeAdapter);
+        this.fragmentContextID = fragmentContext ? getTagID(this.treeAdapter.getTagName(fragmentContext)) : $.UNKNOWN;
+        this._setContextModes(fragmentContext !== null && fragmentContext !== void 0 ? fragmentContext : this.document, this.fragmentContextID);
+        this.openElements = new OpenElementStack(this.document, this.treeAdapter, this);
+    }
+    // API
+    static parse(html, options) {
+        const parser = new this(options);
+        parser.tokenizer.write(html, true);
+        return parser.document;
+    }
+    static getFragmentParser(fragmentContext, options) {
+        const opts = {
+            ...defaultParserOptions,
+            ...options,
+        };
+        //NOTE: use a <template> element as the fragment context if no context element was provided,
+        //so we will parse in a "forgiving" manner
+        fragmentContext !== null && fragmentContext !== void 0 ? fragmentContext : (fragmentContext = opts.treeAdapter.createElement(TN.TEMPLATE, NS.HTML, []));
+        //NOTE: create a fake element which will be used as the `document` for fragment parsing.
+        //This is important for jsdom, where a new `document` cannot be created. This led to
+        //fragment parsing messing with the main `document`.
+        const documentMock = opts.treeAdapter.createElement('documentmock', NS.HTML, []);
+        const parser = new this(opts, documentMock, fragmentContext);
+        if (parser.fragmentContextID === $.TEMPLATE) {
+            parser.tmplInsertionModeStack.unshift(InsertionMode.IN_TEMPLATE);
+        }
+        parser._initTokenizerForFragmentParsing();
+        parser._insertFakeRootElement();
+        parser._resetInsertionMode();
+        parser._findFormInFragmentContext();
+        return parser;
+    }
+    getFragment() {
+        const rootElement = this.treeAdapter.getFirstChild(this.document);
+        const fragment = this.treeAdapter.createDocumentFragment();
+        this._adoptNodes(rootElement, fragment);
+        return fragment;
+    }
+    //Errors
+    /** @internal */
+    _err(token, code, beforeToken) {
+        var _a;
+        if (!this.onParseError)
+            return;
+        const loc = (_a = token.location) !== null && _a !== void 0 ? _a : BASE_LOC;
+        const err = {
+            code,
+            startLine: loc.startLine,
+            startCol: loc.startCol,
+            startOffset: loc.startOffset,
+            endLine: beforeToken ? loc.startLine : loc.endLine,
+            endCol: beforeToken ? loc.startCol : loc.endCol,
+            endOffset: beforeToken ? loc.startOffset : loc.endOffset,
+        };
+        this.onParseError(err);
+    }
+    //Stack events
+    /** @internal */
+    onItemPush(node, tid, isTop) {
+        var _a, _b;
+        (_b = (_a = this.treeAdapter).onItemPush) === null || _b === void 0 ? void 0 : _b.call(_a, node);
+        if (isTop && this.openElements.stackTop > 0)
+            this._setContextModes(node, tid);
+    }
+    /** @internal */
+    onItemPop(node, isTop) {
+        var _a, _b;
+        if (this.options.sourceCodeLocationInfo) {
+            this._setEndLocation(node, this.currentToken);
+        }
+        (_b = (_a = this.treeAdapter).onItemPop) === null || _b === void 0 ? void 0 : _b.call(_a, node, this.openElements.current);
+        if (isTop) {
+            let current;
+            let currentTagId;
+            if (this.openElements.stackTop === 0 && this.fragmentContext) {
+                current = this.fragmentContext;
+                currentTagId = this.fragmentContextID;
+            }
+            else {
+                ({ current, currentTagId } = this.openElements);
+            }
+            this._setContextModes(current, currentTagId);
+        }
+    }
+    _setContextModes(current, tid) {
+        const isHTML = current === this.document || (current && this.treeAdapter.getNamespaceURI(current) === NS.HTML);
+        this.currentNotInHTML = !isHTML;
+        this.tokenizer.inForeignNode =
+            !isHTML && current !== undefined && tid !== undefined && !this._isIntegrationPoint(tid, current);
+    }
+    /** @protected */
+    _switchToTextParsing(currentToken, nextTokenizerState) {
+        this._insertElement(currentToken, NS.HTML);
+        this.tokenizer.state = nextTokenizerState;
+        this.originalInsertionMode = this.insertionMode;
+        this.insertionMode = InsertionMode.TEXT;
+    }
+    switchToPlaintextParsing() {
+        this.insertionMode = InsertionMode.TEXT;
+        this.originalInsertionMode = InsertionMode.IN_BODY;
+        this.tokenizer.state = TokenizerMode.PLAINTEXT;
+    }
+    //Fragment parsing
+    /** @protected */
+    _getAdjustedCurrentElement() {
+        return this.openElements.stackTop === 0 && this.fragmentContext
+            ? this.fragmentContext
+            : this.openElements.current;
+    }
+    /** @protected */
+    _findFormInFragmentContext() {
+        let node = this.fragmentContext;
+        while (node) {
+            if (this.treeAdapter.getTagName(node) === TN.FORM) {
+                this.formElement = node;
+                break;
+            }
+            node = this.treeAdapter.getParentNode(node);
+        }
+    }
+    _initTokenizerForFragmentParsing() {
+        if (!this.fragmentContext || this.treeAdapter.getNamespaceURI(this.fragmentContext) !== NS.HTML) {
+            return;
+        }
+        switch (this.fragmentContextID) {
+            case $.TITLE:
+            case $.TEXTAREA: {
+                this.tokenizer.state = TokenizerMode.RCDATA;
+                break;
+            }
+            case $.STYLE:
+            case $.XMP:
+            case $.IFRAME:
+            case $.NOEMBED:
+            case $.NOFRAMES:
+            case $.NOSCRIPT: {
+                this.tokenizer.state = TokenizerMode.RAWTEXT;
+                break;
+            }
+            case $.SCRIPT: {
+                this.tokenizer.state = TokenizerMode.SCRIPT_DATA;
+                break;
+            }
+            case $.PLAINTEXT: {
+                this.tokenizer.state = TokenizerMode.PLAINTEXT;
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    //Tree mutation
+    /** @protected */
+    _setDocumentType(token) {
+        const name = token.name || '';
+        const publicId = token.publicId || '';
+        const systemId = token.systemId || '';
+        this.treeAdapter.setDocumentType(this.document, name, publicId, systemId);
+        if (token.location) {
+            const documentChildren = this.treeAdapter.getChildNodes(this.document);
+            const docTypeNode = documentChildren.find((node) => this.treeAdapter.isDocumentTypeNode(node));
+            if (docTypeNode) {
+                this.treeAdapter.setNodeSourceCodeLocation(docTypeNode, token.location);
+            }
+        }
+    }
+    /** @protected */
+    _attachElementToTree(element, location) {
+        if (this.options.sourceCodeLocationInfo) {
+            const loc = location && {
+                ...location,
+                startTag: location,
+            };
+            this.treeAdapter.setNodeSourceCodeLocation(element, loc);
+        }
+        if (this._shouldFosterParentOnInsertion()) {
+            this._fosterParentElement(element);
+        }
+        else {
+            const parent = this.openElements.currentTmplContentOrNode;
+            this.treeAdapter.appendChild(parent !== null && parent !== void 0 ? parent : this.document, element);
+        }
+    }
+    /**
+     * For self-closing tags. Add an element to the tree, but skip adding it
+     * to the stack.
+     */
+    /** @protected */
+    _appendElement(token, namespaceURI) {
+        const element = this.treeAdapter.createElement(token.tagName, namespaceURI, token.attrs);
+        this._attachElementToTree(element, token.location);
+    }
+    /** @protected */
+    _insertElement(token, namespaceURI) {
+        const element = this.treeAdapter.createElement(token.tagName, namespaceURI, token.attrs);
+        this._attachElementToTree(element, token.location);
+        this.openElements.push(element, token.tagID);
+    }
+    /** @protected */
+    _insertFakeElement(tagName, tagID) {
+        const element = this.treeAdapter.createElement(tagName, NS.HTML, []);
+        this._attachElementToTree(element, null);
+        this.openElements.push(element, tagID);
+    }
+    /** @protected */
+    _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, token.location);
+        this.openElements.push(tmpl, token.tagID);
+        if (this.options.sourceCodeLocationInfo)
+            this.treeAdapter.setNodeSourceCodeLocation(content, null);
+    }
+    /** @protected */
+    _insertFakeRootElement() {
+        const element = this.treeAdapter.createElement(TN.HTML, NS.HTML, []);
+        if (this.options.sourceCodeLocationInfo)
+            this.treeAdapter.setNodeSourceCodeLocation(element, null);
+        this.treeAdapter.appendChild(this.openElements.current, element);
+        this.openElements.push(element, $.HTML);
+    }
+    /** @protected */
+    _appendCommentNode(token, parent) {
+        const commentNode = this.treeAdapter.createCommentNode(token.data);
+        this.treeAdapter.appendChild(parent, commentNode);
+        if (this.options.sourceCodeLocationInfo) {
+            this.treeAdapter.setNodeSourceCodeLocation(commentNode, token.location);
+        }
+    }
+    /** @protected */
+    _insertCharacters(token) {
+        let parent;
+        let beforeElement;
+        if (this._shouldFosterParentOnInsertion()) {
+            ({ parent, beforeElement } = this._findFosterParentingLocation());
+            if (beforeElement) {
+                this.treeAdapter.insertTextBefore(parent, token.chars, beforeElement);
+            }
+            else {
+                this.treeAdapter.insertText(parent, token.chars);
+            }
+        }
+        else {
+            parent = this.openElements.currentTmplContentOrNode;
+            this.treeAdapter.insertText(parent, token.chars);
+        }
+        if (!token.location)
+            return;
+        const siblings = this.treeAdapter.getChildNodes(parent);
+        const textNodeIdx = beforeElement ? siblings.lastIndexOf(beforeElement) : siblings.length;
+        const textNode = siblings[textNodeIdx - 1];
+        //NOTE: if we have a location assigned by another token, then just update the end position
+        const tnLoc = this.treeAdapter.getNodeSourceCodeLocation(textNode);
+        if (tnLoc) {
+            const { endLine, endCol, endOffset } = token.location;
+            this.treeAdapter.updateNodeSourceCodeLocation(textNode, { endLine, endCol, endOffset });
+        }
+        else if (this.options.sourceCodeLocationInfo) {
+            this.treeAdapter.setNodeSourceCodeLocation(textNode, token.location);
+        }
+    }
+    /** @protected */
+    _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);
+        }
+    }
+    /** @protected */
+    _setEndLocation(element, closingToken) {
+        if (this.treeAdapter.getNodeSourceCodeLocation(element) && closingToken.location) {
+            const ctLoc = closingToken.location;
+            const tn = this.treeAdapter.getTagName(element);
+            const endLoc = 
+            // NOTE: For cases like <p> <p> </p> - First 'p' closes without a closing
+            // tag and for cases like <td> <p> </td> - 'p' closes without a closing tag.
+            closingToken.type === TokenType.END_TAG && tn === closingToken.tagName
+                ? {
+                    endTag: { ...ctLoc },
+                    endLine: ctLoc.endLine,
+                    endCol: ctLoc.endCol,
+                    endOffset: ctLoc.endOffset,
+                }
+                : {
+                    endLine: ctLoc.startLine,
+                    endCol: ctLoc.startCol,
+                    endOffset: ctLoc.startOffset,
+                };
+            this.treeAdapter.updateNodeSourceCodeLocation(element, endLoc);
+        }
+    }
+    //Token processing
+    shouldProcessStartTagTokenInForeignContent(token) {
+        // Check that neither current === document, or ns === NS.HTML
+        if (!this.currentNotInHTML)
+            return false;
+        let current;
+        let currentTagId;
+        if (this.openElements.stackTop === 0 && this.fragmentContext) {
+            current = this.fragmentContext;
+            currentTagId = this.fragmentContextID;
+        }
+        else {
+            ({ current, currentTagId } = this.openElements);
+        }
+        if (token.tagID === $.SVG &&
+            this.treeAdapter.getTagName(current) === TN.ANNOTATION_XML &&
+            this.treeAdapter.getNamespaceURI(current) === NS.MATHML) {
+            return false;
+        }
+        return (
+        // Check that `current` is not an integration point for HTML or MathML elements.
+        this.tokenizer.inForeignNode ||
+            // If it _is_ an integration point, then we might have to check that it is not an HTML
+            // integration point.
+            ((token.tagID === $.MGLYPH || token.tagID === $.MALIGNMARK) &&
+                currentTagId !== undefined &&
+                !this._isIntegrationPoint(currentTagId, current, NS.HTML)));
+    }
+    /** @protected */
+    _processToken(token) {
+        switch (token.type) {
+            case TokenType.CHARACTER: {
+                this.onCharacter(token);
+                break;
+            }
+            case TokenType.NULL_CHARACTER: {
+                this.onNullCharacter(token);
+                break;
+            }
+            case TokenType.COMMENT: {
+                this.onComment(token);
+                break;
+            }
+            case TokenType.DOCTYPE: {
+                this.onDoctype(token);
+                break;
+            }
+            case TokenType.START_TAG: {
+                this._processStartTag(token);
+                break;
+            }
+            case TokenType.END_TAG: {
+                this.onEndTag(token);
+                break;
+            }
+            case TokenType.EOF: {
+                this.onEof(token);
+                break;
+            }
+            case TokenType.WHITESPACE_CHARACTER: {
+                this.onWhitespaceCharacter(token);
+                break;
+            }
+        }
+    }
+    //Integration points
+    /** @protected */
+    _isIntegrationPoint(tid, element, foreignNS) {
+        const ns = this.treeAdapter.getNamespaceURI(element);
+        const attrs = this.treeAdapter.getAttrList(element);
+        return foreignContent.isIntegrationPoint(tid, ns, attrs, foreignNS);
+    }
+    //Active formatting elements reconstruction
+    /** @protected */
+    _reconstructActiveFormattingElements() {
+        const listLength = this.activeFormattingElements.entries.length;
+        if (listLength) {
+            const endIndex = this.activeFormattingElements.entries.findIndex((entry) => entry.type === EntryType.Marker || this.openElements.contains(entry.element));
+            const unopenIdx = endIndex === -1 ? listLength - 1 : endIndex - 1;
+            for (let i = unopenIdx; i >= 0; i--) {
+                const entry = this.activeFormattingElements.entries[i];
+                this._insertElement(entry.token, this.treeAdapter.getNamespaceURI(entry.element));
+                entry.element = this.openElements.current;
+            }
+        }
+    }
+    //Close elements
+    /** @protected */
+    _closeTableCell() {
+        this.openElements.generateImpliedEndTags();
+        this.openElements.popUntilTableCellPopped();
+        this.activeFormattingElements.clearToLastMarker();
+        this.insertionMode = InsertionMode.IN_ROW;
+    }
+    /** @protected */
+    _closePElement() {
+        this.openElements.generateImpliedEndTagsWithExclusion($.P);
+        this.openElements.popUntilTagNamePopped($.P);
+    }
+    //Insertion modes
+    /** @protected */
+    _resetInsertionMode() {
+        for (let i = this.openElements.stackTop; i >= 0; i--) {
+            //Insertion mode reset map
+            switch (i === 0 && this.fragmentContext ? this.fragmentContextID : this.openElements.tagIDs[i]) {
+                case $.TR: {
+                    this.insertionMode = InsertionMode.IN_ROW;
+                    return;
+                }
+                case $.TBODY:
+                case $.THEAD:
+                case $.TFOOT: {
+                    this.insertionMode = InsertionMode.IN_TABLE_BODY;
+                    return;
+                }
+                case $.CAPTION: {
+                    this.insertionMode = InsertionMode.IN_CAPTION;
+                    return;
+                }
+                case $.COLGROUP: {
+                    this.insertionMode = InsertionMode.IN_COLUMN_GROUP;
+                    return;
+                }
+                case $.TABLE: {
+                    this.insertionMode = InsertionMode.IN_TABLE;
+                    return;
+                }
+                case $.BODY: {
+                    this.insertionMode = InsertionMode.IN_BODY;
+                    return;
+                }
+                case $.FRAMESET: {
+                    this.insertionMode = InsertionMode.IN_FRAMESET;
+                    return;
+                }
+                case $.SELECT: {
+                    this._resetInsertionModeForSelect(i);
+                    return;
+                }
+                case $.TEMPLATE: {
+                    this.insertionMode = this.tmplInsertionModeStack[0];
+                    return;
+                }
+                case $.HTML: {
+                    this.insertionMode = this.headElement ? InsertionMode.AFTER_HEAD : InsertionMode.BEFORE_HEAD;
+                    return;
+                }
+                case $.TD:
+                case $.TH: {
+                    if (i > 0) {
+                        this.insertionMode = InsertionMode.IN_CELL;
+                        return;
+                    }
+                    break;
+                }
+                case $.HEAD: {
+                    if (i > 0) {
+                        this.insertionMode = InsertionMode.IN_HEAD;
+                        return;
+                    }
+                    break;
+                }
+            }
+        }
+        this.insertionMode = InsertionMode.IN_BODY;
+    }
+    /** @protected */
+    _resetInsertionModeForSelect(selectIdx) {
+        if (selectIdx > 0) {
+            for (let i = selectIdx - 1; i > 0; i--) {
+                const tn = this.openElements.tagIDs[i];
+                if (tn === $.TEMPLATE) {
+                    break;
+                }
+                else if (tn === $.TABLE) {
+                    this.insertionMode = InsertionMode.IN_SELECT_IN_TABLE;
+                    return;
+                }
+            }
+        }
+        this.insertionMode = InsertionMode.IN_SELECT;
+    }
+    //Foster parenting
+    /** @protected */
+    _isElementCausesFosterParenting(tn) {
+        return TABLE_STRUCTURE_TAGS.has(tn);
+    }
+    /** @protected */
+    _shouldFosterParentOnInsertion() {
+        return (this.fosterParentingEnabled &&
+            this.openElements.currentTagId !== undefined &&
+            this._isElementCausesFosterParenting(this.openElements.currentTagId));
+    }
+    /** @protected */
+    _findFosterParentingLocation() {
+        for (let i = this.openElements.stackTop; i >= 0; i--) {
+            const openElement = this.openElements.items[i];
+            switch (this.openElements.tagIDs[i]) {
+                case $.TEMPLATE: {
+                    if (this.treeAdapter.getNamespaceURI(openElement) === NS.HTML) {
+                        return { parent: this.treeAdapter.getTemplateContent(openElement), beforeElement: null };
+                    }
+                    break;
+                }
+                case $.TABLE: {
+                    const parent = this.treeAdapter.getParentNode(openElement);
+                    if (parent) {
+                        return { parent, beforeElement: openElement };
+                    }
+                    return { parent: this.openElements.items[i - 1], beforeElement: null };
+                }
+                default:
+                // Do nothing
+            }
+        }
+        return { parent: this.openElements.items[0], beforeElement: null };
+    }
+    /** @protected */
+    _fosterParentElement(element) {
+        const location = this._findFosterParentingLocation();
+        if (location.beforeElement) {
+            this.treeAdapter.insertBefore(location.parent, element, location.beforeElement);
+        }
+        else {
+            this.treeAdapter.appendChild(location.parent, element);
+        }
+    }
+    //Special elements
+    /** @protected */
+    _isSpecialElement(element, id) {
+        const ns = this.treeAdapter.getNamespaceURI(element);
+        return SPECIAL_ELEMENTS[ns].has(id);
+    }
+    /** @internal */
+    onCharacter(token) {
+        this.skipNextNewLine = false;
+        if (this.tokenizer.inForeignNode) {
+            characterInForeignContent(this, token);
+            return;
+        }
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                tokenInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HTML: {
+                tokenBeforeHtml(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD: {
+                tokenBeforeHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD: {
+                tokenInHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD_NO_SCRIPT: {
+                tokenInHeadNoScript(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_HEAD: {
+                tokenAfterHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_BODY:
+            case InsertionMode.IN_CAPTION:
+            case InsertionMode.IN_CELL:
+            case InsertionMode.IN_TEMPLATE: {
+                characterInBody(this, token);
+                break;
+            }
+            case InsertionMode.TEXT:
+            case InsertionMode.IN_SELECT:
+            case InsertionMode.IN_SELECT_IN_TABLE: {
+                this._insertCharacters(token);
+                break;
+            }
+            case InsertionMode.IN_TABLE:
+            case InsertionMode.IN_TABLE_BODY:
+            case InsertionMode.IN_ROW: {
+                characterInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                characterInTableText(this, token);
+                break;
+            }
+            case InsertionMode.IN_COLUMN_GROUP: {
+                tokenInColumnGroup(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY: {
+                tokenAfterBody(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_BODY: {
+                tokenAfterAfterBody(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onNullCharacter(token) {
+        this.skipNextNewLine = false;
+        if (this.tokenizer.inForeignNode) {
+            nullCharacterInForeignContent(this, token);
+            return;
+        }
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                tokenInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HTML: {
+                tokenBeforeHtml(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD: {
+                tokenBeforeHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD: {
+                tokenInHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD_NO_SCRIPT: {
+                tokenInHeadNoScript(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_HEAD: {
+                tokenAfterHead(this, token);
+                break;
+            }
+            case InsertionMode.TEXT: {
+                this._insertCharacters(token);
+                break;
+            }
+            case InsertionMode.IN_TABLE:
+            case InsertionMode.IN_TABLE_BODY:
+            case InsertionMode.IN_ROW: {
+                characterInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_COLUMN_GROUP: {
+                tokenInColumnGroup(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY: {
+                tokenAfterBody(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_BODY: {
+                tokenAfterAfterBody(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onComment(token) {
+        this.skipNextNewLine = false;
+        if (this.currentNotInHTML) {
+            appendComment(this, token);
+            return;
+        }
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL:
+            case InsertionMode.BEFORE_HTML:
+            case InsertionMode.BEFORE_HEAD:
+            case InsertionMode.IN_HEAD:
+            case InsertionMode.IN_HEAD_NO_SCRIPT:
+            case InsertionMode.AFTER_HEAD:
+            case InsertionMode.IN_BODY:
+            case InsertionMode.IN_TABLE:
+            case InsertionMode.IN_CAPTION:
+            case InsertionMode.IN_COLUMN_GROUP:
+            case InsertionMode.IN_TABLE_BODY:
+            case InsertionMode.IN_ROW:
+            case InsertionMode.IN_CELL:
+            case InsertionMode.IN_SELECT:
+            case InsertionMode.IN_SELECT_IN_TABLE:
+            case InsertionMode.IN_TEMPLATE:
+            case InsertionMode.IN_FRAMESET:
+            case InsertionMode.AFTER_FRAMESET: {
+                appendComment(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                tokenInTableText(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY: {
+                appendCommentToRootHtmlElement(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_BODY:
+            case InsertionMode.AFTER_AFTER_FRAMESET: {
+                appendCommentToDocument(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onDoctype(token) {
+        this.skipNextNewLine = false;
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                doctypeInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD:
+            case InsertionMode.IN_HEAD:
+            case InsertionMode.IN_HEAD_NO_SCRIPT:
+            case InsertionMode.AFTER_HEAD: {
+                this._err(token, ERR.misplacedDoctype);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                tokenInTableText(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onStartTag(token) {
+        this.skipNextNewLine = false;
+        this.currentToken = token;
+        this._processStartTag(token);
+        if (token.selfClosing && !token.ackSelfClosing) {
+            this._err(token, ERR.nonVoidHtmlElementStartTagWithTrailingSolidus);
+        }
+    }
+    /**
+     * Processes a given start tag.
+     *
+     * `onStartTag` checks if a self-closing tag was recognized. When a token
+     * is moved inbetween multiple insertion modes, this check for self-closing
+     * could lead to false positives. To avoid this, `_processStartTag` is used
+     * for nested calls.
+     *
+     * @param token The token to process.
+     * @protected
+     */
+    _processStartTag(token) {
+        if (this.shouldProcessStartTagTokenInForeignContent(token)) {
+            startTagInForeignContent(this, token);
+        }
+        else {
+            this._startTagOutsideForeignContent(token);
+        }
+    }
+    /** @protected */
+    _startTagOutsideForeignContent(token) {
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                tokenInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HTML: {
+                startTagBeforeHtml(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD: {
+                startTagBeforeHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD: {
+                startTagInHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD_NO_SCRIPT: {
+                startTagInHeadNoScript(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_HEAD: {
+                startTagAfterHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_BODY: {
+                startTagInBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE: {
+                startTagInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                tokenInTableText(this, token);
+                break;
+            }
+            case InsertionMode.IN_CAPTION: {
+                startTagInCaption(this, token);
+                break;
+            }
+            case InsertionMode.IN_COLUMN_GROUP: {
+                startTagInColumnGroup(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_BODY: {
+                startTagInTableBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_ROW: {
+                startTagInRow(this, token);
+                break;
+            }
+            case InsertionMode.IN_CELL: {
+                startTagInCell(this, token);
+                break;
+            }
+            case InsertionMode.IN_SELECT: {
+                startTagInSelect(this, token);
+                break;
+            }
+            case InsertionMode.IN_SELECT_IN_TABLE: {
+                startTagInSelectInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TEMPLATE: {
+                startTagInTemplate(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY: {
+                startTagAfterBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_FRAMESET: {
+                startTagInFrameset(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_FRAMESET: {
+                startTagAfterFrameset(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_BODY: {
+                startTagAfterAfterBody(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_FRAMESET: {
+                startTagAfterAfterFrameset(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onEndTag(token) {
+        this.skipNextNewLine = false;
+        this.currentToken = token;
+        if (this.currentNotInHTML) {
+            endTagInForeignContent(this, token);
+        }
+        else {
+            this._endTagOutsideForeignContent(token);
+        }
+    }
+    /** @protected */
+    _endTagOutsideForeignContent(token) {
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                tokenInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HTML: {
+                endTagBeforeHtml(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD: {
+                endTagBeforeHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD: {
+                endTagInHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD_NO_SCRIPT: {
+                endTagInHeadNoScript(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_HEAD: {
+                endTagAfterHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_BODY: {
+                endTagInBody(this, token);
+                break;
+            }
+            case InsertionMode.TEXT: {
+                endTagInText(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE: {
+                endTagInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                tokenInTableText(this, token);
+                break;
+            }
+            case InsertionMode.IN_CAPTION: {
+                endTagInCaption(this, token);
+                break;
+            }
+            case InsertionMode.IN_COLUMN_GROUP: {
+                endTagInColumnGroup(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_BODY: {
+                endTagInTableBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_ROW: {
+                endTagInRow(this, token);
+                break;
+            }
+            case InsertionMode.IN_CELL: {
+                endTagInCell(this, token);
+                break;
+            }
+            case InsertionMode.IN_SELECT: {
+                endTagInSelect(this, token);
+                break;
+            }
+            case InsertionMode.IN_SELECT_IN_TABLE: {
+                endTagInSelectInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TEMPLATE: {
+                endTagInTemplate(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY: {
+                endTagAfterBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_FRAMESET: {
+                endTagInFrameset(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_FRAMESET: {
+                endTagAfterFrameset(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_AFTER_BODY: {
+                tokenAfterAfterBody(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onEof(token) {
+        switch (this.insertionMode) {
+            case InsertionMode.INITIAL: {
+                tokenInInitialMode(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HTML: {
+                tokenBeforeHtml(this, token);
+                break;
+            }
+            case InsertionMode.BEFORE_HEAD: {
+                tokenBeforeHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD: {
+                tokenInHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_HEAD_NO_SCRIPT: {
+                tokenInHeadNoScript(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_HEAD: {
+                tokenAfterHead(this, token);
+                break;
+            }
+            case InsertionMode.IN_BODY:
+            case InsertionMode.IN_TABLE:
+            case InsertionMode.IN_CAPTION:
+            case InsertionMode.IN_COLUMN_GROUP:
+            case InsertionMode.IN_TABLE_BODY:
+            case InsertionMode.IN_ROW:
+            case InsertionMode.IN_CELL:
+            case InsertionMode.IN_SELECT:
+            case InsertionMode.IN_SELECT_IN_TABLE: {
+                eofInBody(this, token);
+                break;
+            }
+            case InsertionMode.TEXT: {
+                eofInText(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                tokenInTableText(this, token);
+                break;
+            }
+            case InsertionMode.IN_TEMPLATE: {
+                eofInTemplate(this, token);
+                break;
+            }
+            case InsertionMode.AFTER_BODY:
+            case InsertionMode.IN_FRAMESET:
+            case InsertionMode.AFTER_FRAMESET:
+            case InsertionMode.AFTER_AFTER_BODY:
+            case InsertionMode.AFTER_AFTER_FRAMESET: {
+                stopParsing(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+    /** @internal */
+    onWhitespaceCharacter(token) {
+        if (this.skipNextNewLine) {
+            this.skipNextNewLine = false;
+            if (token.chars.charCodeAt(0) === unicode.CODE_POINTS.LINE_FEED) {
+                if (token.chars.length === 1) {
+                    return;
+                }
+                token.chars = token.chars.substr(1);
+            }
+        }
+        if (this.tokenizer.inForeignNode) {
+            this._insertCharacters(token);
+            return;
+        }
+        switch (this.insertionMode) {
+            case InsertionMode.IN_HEAD:
+            case InsertionMode.IN_HEAD_NO_SCRIPT:
+            case InsertionMode.AFTER_HEAD:
+            case InsertionMode.TEXT:
+            case InsertionMode.IN_COLUMN_GROUP:
+            case InsertionMode.IN_SELECT:
+            case InsertionMode.IN_SELECT_IN_TABLE:
+            case InsertionMode.IN_FRAMESET:
+            case InsertionMode.AFTER_FRAMESET: {
+                this._insertCharacters(token);
+                break;
+            }
+            case InsertionMode.IN_BODY:
+            case InsertionMode.IN_CAPTION:
+            case InsertionMode.IN_CELL:
+            case InsertionMode.IN_TEMPLATE:
+            case InsertionMode.AFTER_BODY:
+            case InsertionMode.AFTER_AFTER_BODY:
+            case InsertionMode.AFTER_AFTER_FRAMESET: {
+                whitespaceCharacterInBody(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE:
+            case InsertionMode.IN_TABLE_BODY:
+            case InsertionMode.IN_ROW: {
+                characterInTable(this, token);
+                break;
+            }
+            case InsertionMode.IN_TABLE_TEXT: {
+                whitespaceCharacterInTableText(this, token);
+                break;
+            }
+            default:
+            // Do nothing
+        }
+    }
+}
+//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.tagID)) {
+            formattingElementEntry = null;
+        }
+    }
+    else {
+        genericEndTagInBody(p, token);
+    }
+    return formattingElementEntry;
+}
+//Steps 9 and 10 of the algorithm
+function aaObtainFurthestBlock(p, formattingElementEntry) {
+    let furthestBlock = null;
+    let idx = p.openElements.stackTop;
+    for (; idx >= 0; idx--) {
+        const element = p.openElements.items[idx];
+        if (element === formattingElementEntry.element) {
+            break;
+        }
+        if (p._isSpecialElement(element, p.openElements.tagIDs[idx])) {
+            furthestBlock = element;
+        }
+    }
+    if (!furthestBlock) {
+        p.openElements.shortenToLength(Math.max(idx, 0));
+        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 the 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) {
+    const tn = p.treeAdapter.getTagName(commonAncestor);
+    const tid = getTagID(tn);
+    if (p._isElementCausesFosterParenting(tid)) {
+        p._fosterParentElement(lastElement);
+    }
+    else {
+        const ns = p.treeAdapter.getNamespaceURI(commonAncestor);
+        if (tid === $.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;
+    const newElement = p.treeAdapter.createElement(token.tagName, ns, token.attrs);
+    p._adoptNodes(furthestBlock, newElement);
+    p.treeAdapter.appendChild(furthestBlock, newElement);
+    p.activeFormattingElements.insertElementAfterBookmark(newElement, token);
+    p.activeFormattingElements.removeEntry(formattingElementEntry);
+    p.openElements.remove(formattingElementEntry.element);
+    p.openElements.insertAfter(furthestBlock, newElement, token.tagID);
+}
+//Algorithm entry point
+function callAdoptionAgency(p, token) {
+    for (let i = 0; i < AA_OUTER_LOOP_ITER; i++) {
+        const formattingElementEntry = aaObtainFormattingElementEntry(p, token);
+        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);
+        if (commonAncestor)
+            aaInsertLastNodeInCommonAncestor(p, commonAncestor, lastElement);
+        aaReplaceFormattingElement(p, furthestBlock, formattingElementEntry);
+    }
+}
+//Generic token handlers
+//------------------------------------------------------------------
+function appendComment(p, token) {
+    p._appendCommentNode(token, p.openElements.currentTmplContentOrNode);
+}
+function appendCommentToRootHtmlElement(p, token) {
+    p._appendCommentNode(token, p.openElements.items[0]);
+}
+function appendCommentToDocument(p, token) {
+    p._appendCommentNode(token, p.document);
+}
+function stopParsing(p, token) {
+    p.stopped = true;
+    // NOTE: Set end locations for elements that remain on the open element stack.
+    if (token.location) {
+        // NOTE: If we are not in a fragment, `html` and `body` will stay on the stack.
+        // This is a problem, as we might overwrite their end position here.
+        const target = p.fragmentContext ? 0 : 2;
+        for (let i = p.openElements.stackTop; i >= target; i--) {
+            p._setEndLocation(p.openElements.items[i], token);
+        }
+        // Handle `html` and `body`
+        if (!p.fragmentContext && p.openElements.stackTop >= 0) {
+            const htmlElement = p.openElements.items[0];
+            const htmlLocation = p.treeAdapter.getNodeSourceCodeLocation(htmlElement);
+            if (htmlLocation && !htmlLocation.endTag) {
+                p._setEndLocation(htmlElement, token);
+                if (p.openElements.stackTop >= 1) {
+                    const bodyElement = p.openElements.items[1];
+                    const bodyLocation = p.treeAdapter.getNodeSourceCodeLocation(bodyElement);
+                    if (bodyLocation && !bodyLocation.endTag) {
+                        p._setEndLocation(bodyElement, token);
+                    }
+                }
+            }
+        }
+    }
+}
+// The "initial" insertion mode
+//------------------------------------------------------------------
+function doctypeInInitialMode(p, token) {
+    p._setDocumentType(token);
+    const mode = token.forceQuirks ? DOCUMENT_MODE.QUIRKS : doctype.getDocumentMode(token);
+    if (!doctype.isConforming(token)) {
+        p._err(token, ERR.nonConformingDoctype);
+    }
+    p.treeAdapter.setDocumentMode(p.document, mode);
+    p.insertionMode = InsertionMode.BEFORE_HTML;
+}
+function tokenInInitialMode(p, token) {
+    p._err(token, ERR.missingDoctype, true);
+    p.treeAdapter.setDocumentMode(p.document, DOCUMENT_MODE.QUIRKS);
+    p.insertionMode = InsertionMode.BEFORE_HTML;
+    p._processToken(token);
+}
+// The "before html" insertion mode
+//------------------------------------------------------------------
+function startTagBeforeHtml(p, token) {
+    if (token.tagID === $.HTML) {
+        p._insertElement(token, NS.HTML);
+        p.insertionMode = InsertionMode.BEFORE_HEAD;
+    }
+    else {
+        tokenBeforeHtml(p, token);
+    }
+}
+function endTagBeforeHtml(p, token) {
+    const tn = token.tagID;
+    if (tn === $.HTML || tn === $.HEAD || tn === $.BODY || tn === $.BR) {
+        tokenBeforeHtml(p, token);
+    }
+}
+function tokenBeforeHtml(p, token) {
+    p._insertFakeRootElement();
+    p.insertionMode = InsertionMode.BEFORE_HEAD;
+    p._processToken(token);
+}
+// The "before head" insertion mode
+//------------------------------------------------------------------
+function startTagBeforeHead(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.HEAD: {
+            p._insertElement(token, NS.HTML);
+            p.headElement = p.openElements.current;
+            p.insertionMode = InsertionMode.IN_HEAD;
+            break;
+        }
+        default: {
+            tokenBeforeHead(p, token);
+        }
+    }
+}
+function endTagBeforeHead(p, token) {
+    const tn = token.tagID;
+    if (tn === $.HEAD || tn === $.BODY || tn === $.HTML || tn === $.BR) {
+        tokenBeforeHead(p, token);
+    }
+    else {
+        p._err(token, ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+function tokenBeforeHead(p, token) {
+    p._insertFakeElement(TN.HEAD, $.HEAD);
+    p.headElement = p.openElements.current;
+    p.insertionMode = InsertionMode.IN_HEAD;
+    p._processToken(token);
+}
+// The "in head" insertion mode
+//------------------------------------------------------------------
+function startTagInHead(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.BASE:
+        case $.BASEFONT:
+        case $.BGSOUND:
+        case $.LINK:
+        case $.META: {
+            p._appendElement(token, NS.HTML);
+            token.ackSelfClosing = true;
+            break;
+        }
+        case $.TITLE: {
+            p._switchToTextParsing(token, TokenizerMode.RCDATA);
+            break;
+        }
+        case $.NOSCRIPT: {
+            if (p.options.scriptingEnabled) {
+                p._switchToTextParsing(token, TokenizerMode.RAWTEXT);
+            }
+            else {
+                p._insertElement(token, NS.HTML);
+                p.insertionMode = InsertionMode.IN_HEAD_NO_SCRIPT;
+            }
+            break;
+        }
+        case $.NOFRAMES:
+        case $.STYLE: {
+            p._switchToTextParsing(token, TokenizerMode.RAWTEXT);
+            break;
+        }
+        case $.SCRIPT: {
+            p._switchToTextParsing(token, TokenizerMode.SCRIPT_DATA);
+            break;
+        }
+        case $.TEMPLATE: {
+            p._insertTemplate(token);
+            p.activeFormattingElements.insertMarker();
+            p.framesetOk = false;
+            p.insertionMode = InsertionMode.IN_TEMPLATE;
+            p.tmplInsertionModeStack.unshift(InsertionMode.IN_TEMPLATE);
+            break;
+        }
+        case $.HEAD: {
+            p._err(token, ERR.misplacedStartTagForHeadElement);
+            break;
+        }
+        default: {
+            tokenInHead(p, token);
+        }
+    }
+}
+function endTagInHead(p, token) {
+    switch (token.tagID) {
+        case $.HEAD: {
+            p.openElements.pop();
+            p.insertionMode = InsertionMode.AFTER_HEAD;
+            break;
+        }
+        case $.BODY:
+        case $.BR:
+        case $.HTML: {
+            tokenInHead(p, token);
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        default: {
+            p._err(token, ERR.endTagWithoutMatchingOpenElement);
+        }
+    }
+}
+function templateEndTagInHead(p, token) {
+    if (p.openElements.tmplCount > 0) {
+        p.openElements.generateImpliedEndTagsThoroughly();
+        if (p.openElements.currentTagId !== $.TEMPLATE) {
+            p._err(token, ERR.closingOfElementWithOpenChildElements);
+        }
+        p.openElements.popUntilTagNamePopped($.TEMPLATE);
+        p.activeFormattingElements.clearToLastMarker();
+        p.tmplInsertionModeStack.shift();
+        p._resetInsertionMode();
+    }
+    else {
+        p._err(token, ERR.endTagWithoutMatchingOpenElement);
+    }
+}
+function tokenInHead(p, token) {
+    p.openElements.pop();
+    p.insertionMode = InsertionMode.AFTER_HEAD;
+    p._processToken(token);
+}
+// The "in head no script" insertion mode
+//------------------------------------------------------------------
+function startTagInHeadNoScript(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.BASEFONT:
+        case $.BGSOUND:
+        case $.HEAD:
+        case $.LINK:
+        case $.META:
+        case $.NOFRAMES:
+        case $.STYLE: {
+            startTagInHead(p, token);
+            break;
+        }
+        case $.NOSCRIPT: {
+            p._err(token, ERR.nestedNoscriptInHead);
+            break;
+        }
+        default: {
+            tokenInHeadNoScript(p, token);
+        }
+    }
+}
+function endTagInHeadNoScript(p, token) {
+    switch (token.tagID) {
+        case $.NOSCRIPT: {
+            p.openElements.pop();
+            p.insertionMode = InsertionMode.IN_HEAD;
+            break;
+        }
+        case $.BR: {
+            tokenInHeadNoScript(p, token);
+            break;
+        }
+        default: {
+            p._err(token, ERR.endTagWithoutMatchingOpenElement);
+        }
+    }
+}
+function tokenInHeadNoScript(p, token) {
+    const errCode = token.type === TokenType.EOF ? ERR.openElementsLeftAfterEof : ERR.disallowedContentInNoscriptInHead;
+    p._err(token, errCode);
+    p.openElements.pop();
+    p.insertionMode = InsertionMode.IN_HEAD;
+    p._processToken(token);
+}
+// The "after head" insertion mode
+//------------------------------------------------------------------
+function startTagAfterHead(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.BODY: {
+            p._insertElement(token, NS.HTML);
+            p.framesetOk = false;
+            p.insertionMode = InsertionMode.IN_BODY;
+            break;
+        }
+        case $.FRAMESET: {
+            p._insertElement(token, NS.HTML);
+            p.insertionMode = InsertionMode.IN_FRAMESET;
+            break;
+        }
+        case $.BASE:
+        case $.BASEFONT:
+        case $.BGSOUND:
+        case $.LINK:
+        case $.META:
+        case $.NOFRAMES:
+        case $.SCRIPT:
+        case $.STYLE:
+        case $.TEMPLATE:
+        case $.TITLE: {
+            p._err(token, ERR.abandonedHeadElementChild);
+            p.openElements.push(p.headElement, $.HEAD);
+            startTagInHead(p, token);
+            p.openElements.remove(p.headElement);
+            break;
+        }
+        case $.HEAD: {
+            p._err(token, ERR.misplacedStartTagForHeadElement);
+            break;
+        }
+        default: {
+            tokenAfterHead(p, token);
+        }
+    }
+}
+function endTagAfterHead(p, token) {
+    switch (token.tagID) {
+        case $.BODY:
+        case $.HTML:
+        case $.BR: {
+            tokenAfterHead(p, token);
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        default: {
+            p._err(token, ERR.endTagWithoutMatchingOpenElement);
+        }
+    }
+}
+function tokenAfterHead(p, token) {
+    p._insertFakeElement(TN.BODY, $.BODY);
+    p.insertionMode = InsertionMode.IN_BODY;
+    modeInBody(p, token);
+}
+// The "in body" insertion mode
+//------------------------------------------------------------------
+function modeInBody(p, token) {
+    switch (token.type) {
+        case TokenType.CHARACTER: {
+            characterInBody(p, token);
+            break;
+        }
+        case TokenType.WHITESPACE_CHARACTER: {
+            whitespaceCharacterInBody(p, token);
+            break;
+        }
+        case TokenType.COMMENT: {
+            appendComment(p, token);
+            break;
+        }
+        case TokenType.START_TAG: {
+            startTagInBody(p, token);
+            break;
+        }
+        case TokenType.END_TAG: {
+            endTagInBody(p, token);
+            break;
+        }
+        case TokenType.EOF: {
+            eofInBody(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+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 = InsertionMode.IN_FRAMESET;
+    }
+}
+function addressStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._insertElement(token, NS.HTML);
+}
+function numberedHeaderStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    if (p.openElements.currentTagId !== undefined && NUMBERED_HEADERS.has(p.openElements.currentTagId)) {
+        p.openElements.pop();
+    }
+    p._insertElement(token, NS.HTML);
+}
+function preStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.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.tagID;
+    for (let i = p.openElements.stackTop; i >= 0; i--) {
+        const elementId = p.openElements.tagIDs[i];
+        if ((tn === $.LI && elementId === $.LI) ||
+            ((tn === $.DD || tn === $.DT) && (elementId === $.DD || elementId === $.DT))) {
+            p.openElements.generateImpliedEndTagsWithExclusion(elementId);
+            p.openElements.popUntilTagNamePopped(elementId);
+            break;
+        }
+        if (elementId !== $.ADDRESS &&
+            elementId !== $.DIV &&
+            elementId !== $.P &&
+            p._isSpecialElement(p.openElements.items[i], elementId)) {
+            break;
+        }
+    }
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._insertElement(token, NS.HTML);
+}
+function plaintextStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._insertElement(token, NS.HTML);
+    p.tokenizer.state = TokenizerMode.PLAINTEXT;
+}
+function buttonStartTagInBody(p, token) {
+    if (p.openElements.hasInScope($.BUTTON)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped($.BUTTON);
+    }
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+}
+function aStartTagInBody(p, token) {
+    const activeElementEntry = p.activeFormattingElements.getElementEntryInScopeWithTagName(TN.A);
+    if (activeElementEntry) {
+        callAdoptionAgency(p, token);
+        p.openElements.remove(activeElementEntry.element);
+        p.activeFormattingElements.removeEntry(activeElementEntry);
+    }
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.pushElement(p.openElements.current, token);
+}
+function bStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.activeFormattingElements.pushElement(p.openElements.current, token);
+}
+function nobrStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    if (p.openElements.hasInScope($.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) !== DOCUMENT_MODE.QUIRKS && p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+    p.insertionMode = InsertionMode.IN_TABLE;
+}
+function areaStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._appendElement(token, NS.HTML);
+    p.framesetOk = false;
+    token.ackSelfClosing = true;
+}
+function isHiddenInput(token) {
+    const inputType = getTokenAttr(token, ATTRS.TYPE);
+    return inputType != null && inputType.toLowerCase() === HIDDEN_INPUT_TYPE;
+}
+function inputStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._appendElement(token, NS.HTML);
+    if (!isHiddenInput(token)) {
+        p.framesetOk = false;
+    }
+    token.ackSelfClosing = true;
+}
+function paramStartTagInBody(p, token) {
+    p._appendElement(token, NS.HTML);
+    token.ackSelfClosing = true;
+}
+function hrStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._appendElement(token, NS.HTML);
+    p.framesetOk = false;
+    token.ackSelfClosing = true;
+}
+function imageStartTagInBody(p, token) {
+    token.tagName = TN.IMG;
+    token.tagID = $.IMG;
+    areaStartTagInBody(p, token);
+}
+function textareaStartTagInBody(p, token) {
+    p._insertElement(token, NS.HTML);
+    //NOTE: If the next token is a U+000A LINE FEED (LF) character token, then ignore that token and move
+    //on to the next one. (Newlines at the start of textarea elements are ignored as an authoring convenience.)
+    p.skipNextNewLine = true;
+    p.tokenizer.state = TokenizerMode.RCDATA;
+    p.originalInsertionMode = p.insertionMode;
+    p.framesetOk = false;
+    p.insertionMode = InsertionMode.TEXT;
+}
+function xmpStartTagInBody(p, token) {
+    if (p.openElements.hasInButtonScope($.P)) {
+        p._closePElement();
+    }
+    p._reconstructActiveFormattingElements();
+    p.framesetOk = false;
+    p._switchToTextParsing(token, TokenizerMode.RAWTEXT);
+}
+function iframeStartTagInBody(p, token) {
+    p.framesetOk = false;
+    p._switchToTextParsing(token, TokenizerMode.RAWTEXT);
+}
+//NOTE: here we assume that we always act as a user agent with enabled plugins/frames, so we parse
+//<noembed>/<noframes> as rawtext.
+function rawTextStartTagInBody(p, token) {
+    p._switchToTextParsing(token, TokenizerMode.RAWTEXT);
+}
+function selectStartTagInBody(p, token) {
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+    p.framesetOk = false;
+    p.insertionMode =
+        p.insertionMode === InsertionMode.IN_TABLE ||
+            p.insertionMode === InsertionMode.IN_CAPTION ||
+            p.insertionMode === InsertionMode.IN_TABLE_BODY ||
+            p.insertionMode === InsertionMode.IN_ROW ||
+            p.insertionMode === InsertionMode.IN_CELL
+            ? InsertionMode.IN_SELECT_IN_TABLE
+            : InsertionMode.IN_SELECT;
+}
+function optgroupStartTagInBody(p, token) {
+    if (p.openElements.currentTagId === $.OPTION) {
+        p.openElements.pop();
+    }
+    p._reconstructActiveFormattingElements();
+    p._insertElement(token, NS.HTML);
+}
+function rbStartTagInBody(p, token) {
+    if (p.openElements.hasInScope($.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 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);
+}
+function startTagInBody(p, token) {
+    switch (token.tagID) {
+        case $.I:
+        case $.S:
+        case $.B:
+        case $.U:
+        case $.EM:
+        case $.TT:
+        case $.BIG:
+        case $.CODE:
+        case $.FONT:
+        case $.SMALL:
+        case $.STRIKE:
+        case $.STRONG: {
+            bStartTagInBody(p, token);
+            break;
+        }
+        case $.A: {
+            aStartTagInBody(p, token);
+            break;
+        }
+        case $.H1:
+        case $.H2:
+        case $.H3:
+        case $.H4:
+        case $.H5:
+        case $.H6: {
+            numberedHeaderStartTagInBody(p, token);
+            break;
+        }
+        case $.P:
+        case $.DL:
+        case $.OL:
+        case $.UL:
+        case $.DIV:
+        case $.DIR:
+        case $.NAV:
+        case $.MAIN:
+        case $.MENU:
+        case $.ASIDE:
+        case $.CENTER:
+        case $.FIGURE:
+        case $.FOOTER:
+        case $.HEADER:
+        case $.HGROUP:
+        case $.DIALOG:
+        case $.DETAILS:
+        case $.ADDRESS:
+        case $.ARTICLE:
+        case $.SEARCH:
+        case $.SECTION:
+        case $.SUMMARY:
+        case $.FIELDSET:
+        case $.BLOCKQUOTE:
+        case $.FIGCAPTION: {
+            addressStartTagInBody(p, token);
+            break;
+        }
+        case $.LI:
+        case $.DD:
+        case $.DT: {
+            listItemStartTagInBody(p, token);
+            break;
+        }
+        case $.BR:
+        case $.IMG:
+        case $.WBR:
+        case $.AREA:
+        case $.EMBED:
+        case $.KEYGEN: {
+            areaStartTagInBody(p, token);
+            break;
+        }
+        case $.HR: {
+            hrStartTagInBody(p, token);
+            break;
+        }
+        case $.RB:
+        case $.RTC: {
+            rbStartTagInBody(p, token);
+            break;
+        }
+        case $.RT:
+        case $.RP: {
+            rtStartTagInBody(p, token);
+            break;
+        }
+        case $.PRE:
+        case $.LISTING: {
+            preStartTagInBody(p, token);
+            break;
+        }
+        case $.XMP: {
+            xmpStartTagInBody(p, token);
+            break;
+        }
+        case $.SVG: {
+            svgStartTagInBody(p, token);
+            break;
+        }
+        case $.HTML: {
+            htmlStartTagInBody(p, token);
+            break;
+        }
+        case $.BASE:
+        case $.LINK:
+        case $.META:
+        case $.STYLE:
+        case $.TITLE:
+        case $.SCRIPT:
+        case $.BGSOUND:
+        case $.BASEFONT:
+        case $.TEMPLATE: {
+            startTagInHead(p, token);
+            break;
+        }
+        case $.BODY: {
+            bodyStartTagInBody(p, token);
+            break;
+        }
+        case $.FORM: {
+            formStartTagInBody(p, token);
+            break;
+        }
+        case $.NOBR: {
+            nobrStartTagInBody(p, token);
+            break;
+        }
+        case $.MATH: {
+            mathStartTagInBody(p, token);
+            break;
+        }
+        case $.TABLE: {
+            tableStartTagInBody(p, token);
+            break;
+        }
+        case $.INPUT: {
+            inputStartTagInBody(p, token);
+            break;
+        }
+        case $.PARAM:
+        case $.TRACK:
+        case $.SOURCE: {
+            paramStartTagInBody(p, token);
+            break;
+        }
+        case $.IMAGE: {
+            imageStartTagInBody(p, token);
+            break;
+        }
+        case $.BUTTON: {
+            buttonStartTagInBody(p, token);
+            break;
+        }
+        case $.APPLET:
+        case $.OBJECT:
+        case $.MARQUEE: {
+            appletStartTagInBody(p, token);
+            break;
+        }
+        case $.IFRAME: {
+            iframeStartTagInBody(p, token);
+            break;
+        }
+        case $.SELECT: {
+            selectStartTagInBody(p, token);
+            break;
+        }
+        case $.OPTION:
+        case $.OPTGROUP: {
+            optgroupStartTagInBody(p, token);
+            break;
+        }
+        case $.NOEMBED:
+        case $.NOFRAMES: {
+            rawTextStartTagInBody(p, token);
+            break;
+        }
+        case $.FRAMESET: {
+            framesetStartTagInBody(p, token);
+            break;
+        }
+        case $.TEXTAREA: {
+            textareaStartTagInBody(p, token);
+            break;
+        }
+        case $.NOSCRIPT: {
+            if (p.options.scriptingEnabled) {
+                rawTextStartTagInBody(p, token);
+            }
+            else {
+                genericStartTagInBody(p, token);
+            }
+            break;
+        }
+        case $.PLAINTEXT: {
+            plaintextStartTagInBody(p, token);
+            break;
+        }
+        case $.COL:
+        case $.TH:
+        case $.TD:
+        case $.TR:
+        case $.HEAD:
+        case $.FRAME:
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD:
+        case $.CAPTION:
+        case $.COLGROUP: {
+            // Ignore token
+            break;
+        }
+        default: {
+            genericStartTagInBody(p, token);
+        }
+    }
+}
+function bodyEndTagInBody(p, token) {
+    if (p.openElements.hasInScope($.BODY)) {
+        p.insertionMode = InsertionMode.AFTER_BODY;
+        //NOTE: <body> is never popped from the stack, so we need to updated
+        //the end location explicitly.
+        if (p.options.sourceCodeLocationInfo) {
+            const bodyElement = p.openElements.tryPeekProperlyNestedBodyElement();
+            if (bodyElement) {
+                p._setEndLocation(bodyElement, token);
+            }
+        }
+    }
+}
+function htmlEndTagInBody(p, token) {
+    if (p.openElements.hasInScope($.BODY)) {
+        p.insertionMode = InsertionMode.AFTER_BODY;
+        endTagAfterBody(p, token);
+    }
+}
+function addressEndTagInBody(p, token) {
+    const tn = token.tagID;
+    if (p.openElements.hasInScope(tn)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped(tn);
+    }
+}
+function formEndTagInBody(p) {
+    const inTemplate = p.openElements.tmplCount > 0;
+    const { formElement } = p;
+    if (!inTemplate) {
+        p.formElement = null;
+    }
+    if ((formElement || inTemplate) && p.openElements.hasInScope($.FORM)) {
+        p.openElements.generateImpliedEndTags();
+        if (inTemplate) {
+            p.openElements.popUntilTagNamePopped($.FORM);
+        }
+        else if (formElement) {
+            p.openElements.remove(formElement);
+        }
+    }
+}
+function pEndTagInBody(p) {
+    if (!p.openElements.hasInButtonScope($.P)) {
+        p._insertFakeElement(TN.P, $.P);
+    }
+    p._closePElement();
+}
+function liEndTagInBody(p) {
+    if (p.openElements.hasInListItemScope($.LI)) {
+        p.openElements.generateImpliedEndTagsWithExclusion($.LI);
+        p.openElements.popUntilTagNamePopped($.LI);
+    }
+}
+function ddEndTagInBody(p, token) {
+    const tn = token.tagID;
+    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.tagID;
+    if (p.openElements.hasInScope(tn)) {
+        p.openElements.generateImpliedEndTags();
+        p.openElements.popUntilTagNamePopped(tn);
+        p.activeFormattingElements.clearToLastMarker();
+    }
+}
+function brEndTagInBody(p) {
+    p._reconstructActiveFormattingElements();
+    p._insertFakeElement(TN.BR, $.BR);
+    p.openElements.pop();
+    p.framesetOk = false;
+}
+function genericEndTagInBody(p, token) {
+    const tn = token.tagName;
+    const tid = token.tagID;
+    for (let i = p.openElements.stackTop; i > 0; i--) {
+        const element = p.openElements.items[i];
+        const elementId = p.openElements.tagIDs[i];
+        // Compare the tag name here, as the tag might not be a known tag with an ID.
+        if (tid === elementId && (tid !== $.UNKNOWN || p.treeAdapter.getTagName(element) === tn)) {
+            p.openElements.generateImpliedEndTagsWithExclusion(tid);
+            if (p.openElements.stackTop >= i)
+                p.openElements.shortenToLength(i);
+            break;
+        }
+        if (p._isSpecialElement(element, elementId)) {
+            break;
+        }
+    }
+}
+function endTagInBody(p, token) {
+    switch (token.tagID) {
+        case $.A:
+        case $.B:
+        case $.I:
+        case $.S:
+        case $.U:
+        case $.EM:
+        case $.TT:
+        case $.BIG:
+        case $.CODE:
+        case $.FONT:
+        case $.NOBR:
+        case $.SMALL:
+        case $.STRIKE:
+        case $.STRONG: {
+            callAdoptionAgency(p, token);
+            break;
+        }
+        case $.P: {
+            pEndTagInBody(p);
+            break;
+        }
+        case $.DL:
+        case $.UL:
+        case $.OL:
+        case $.DIR:
+        case $.DIV:
+        case $.NAV:
+        case $.PRE:
+        case $.MAIN:
+        case $.MENU:
+        case $.ASIDE:
+        case $.BUTTON:
+        case $.CENTER:
+        case $.FIGURE:
+        case $.FOOTER:
+        case $.HEADER:
+        case $.HGROUP:
+        case $.DIALOG:
+        case $.ADDRESS:
+        case $.ARTICLE:
+        case $.DETAILS:
+        case $.SEARCH:
+        case $.SECTION:
+        case $.SUMMARY:
+        case $.LISTING:
+        case $.FIELDSET:
+        case $.BLOCKQUOTE:
+        case $.FIGCAPTION: {
+            addressEndTagInBody(p, token);
+            break;
+        }
+        case $.LI: {
+            liEndTagInBody(p);
+            break;
+        }
+        case $.DD:
+        case $.DT: {
+            ddEndTagInBody(p, token);
+            break;
+        }
+        case $.H1:
+        case $.H2:
+        case $.H3:
+        case $.H4:
+        case $.H5:
+        case $.H6: {
+            numberedHeaderEndTagInBody(p);
+            break;
+        }
+        case $.BR: {
+            brEndTagInBody(p);
+            break;
+        }
+        case $.BODY: {
+            bodyEndTagInBody(p, token);
+            break;
+        }
+        case $.HTML: {
+            htmlEndTagInBody(p, token);
+            break;
+        }
+        case $.FORM: {
+            formEndTagInBody(p);
+            break;
+        }
+        case $.APPLET:
+        case $.OBJECT:
+        case $.MARQUEE: {
+            appletEndTagInBody(p, token);
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        default: {
+            genericEndTagInBody(p, token);
+        }
+    }
+}
+function eofInBody(p, token) {
+    if (p.tmplInsertionModeStack.length > 0) {
+        eofInTemplate(p, token);
+    }
+    else {
+        stopParsing(p, token);
+    }
+}
+// The "text" insertion mode
+//------------------------------------------------------------------
+function endTagInText(p, token) {
+    var _a;
+    if (token.tagID === $.SCRIPT) {
+        (_a = p.scriptHandler) === null || _a === void 0 ? void 0 : _a.call(p, p.openElements.current);
+    }
+    p.openElements.pop();
+    p.insertionMode = p.originalInsertionMode;
+}
+function eofInText(p, token) {
+    p._err(token, ERR.eofInElementThatCanContainOnlyText);
+    p.openElements.pop();
+    p.insertionMode = p.originalInsertionMode;
+    p.onEof(token);
+}
+// The "in table" insertion mode
+//------------------------------------------------------------------
+function characterInTable(p, token) {
+    if (p.openElements.currentTagId !== undefined && TABLE_STRUCTURE_TAGS.has(p.openElements.currentTagId)) {
+        p.pendingCharacterTokens.length = 0;
+        p.hasNonWhitespacePendingCharacterToken = false;
+        p.originalInsertionMode = p.insertionMode;
+        p.insertionMode = InsertionMode.IN_TABLE_TEXT;
+        switch (token.type) {
+            case TokenType.CHARACTER: {
+                characterInTableText(p, token);
+                break;
+            }
+            case TokenType.WHITESPACE_CHARACTER: {
+                whitespaceCharacterInTableText(p, token);
+                break;
+            }
+            // Ignore null
+        }
+    }
+    else {
+        tokenInTable(p, token);
+    }
+}
+function captionStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p.activeFormattingElements.insertMarker();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = InsertionMode.IN_CAPTION;
+}
+function colgroupStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = InsertionMode.IN_COLUMN_GROUP;
+}
+function colStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertFakeElement(TN.COLGROUP, $.COLGROUP);
+    p.insertionMode = InsertionMode.IN_COLUMN_GROUP;
+    startTagInColumnGroup(p, token);
+}
+function tbodyStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertElement(token, NS.HTML);
+    p.insertionMode = InsertionMode.IN_TABLE_BODY;
+}
+function tdStartTagInTable(p, token) {
+    p.openElements.clearBackToTableContext();
+    p._insertFakeElement(TN.TBODY, $.TBODY);
+    p.insertionMode = InsertionMode.IN_TABLE_BODY;
+    startTagInTableBody(p, token);
+}
+function tableStartTagInTable(p, token) {
+    if (p.openElements.hasInTableScope($.TABLE)) {
+        p.openElements.popUntilTagNamePopped($.TABLE);
+        p._resetInsertionMode();
+        p._processStartTag(token);
+    }
+}
+function inputStartTagInTable(p, token) {
+    if (isHiddenInput(token)) {
+        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) {
+    switch (token.tagID) {
+        case $.TD:
+        case $.TH:
+        case $.TR: {
+            tdStartTagInTable(p, token);
+            break;
+        }
+        case $.STYLE:
+        case $.SCRIPT:
+        case $.TEMPLATE: {
+            startTagInHead(p, token);
+            break;
+        }
+        case $.COL: {
+            colStartTagInTable(p, token);
+            break;
+        }
+        case $.FORM: {
+            formStartTagInTable(p, token);
+            break;
+        }
+        case $.TABLE: {
+            tableStartTagInTable(p, token);
+            break;
+        }
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD: {
+            tbodyStartTagInTable(p, token);
+            break;
+        }
+        case $.INPUT: {
+            inputStartTagInTable(p, token);
+            break;
+        }
+        case $.CAPTION: {
+            captionStartTagInTable(p, token);
+            break;
+        }
+        case $.COLGROUP: {
+            colgroupStartTagInTable(p, token);
+            break;
+        }
+        default: {
+            tokenInTable(p, token);
+        }
+    }
+}
+function endTagInTable(p, token) {
+    switch (token.tagID) {
+        case $.TABLE: {
+            if (p.openElements.hasInTableScope($.TABLE)) {
+                p.openElements.popUntilTagNamePopped($.TABLE);
+                p._resetInsertionMode();
+            }
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        case $.BODY:
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.HTML:
+        case $.TBODY:
+        case $.TD:
+        case $.TFOOT:
+        case $.TH:
+        case $.THEAD:
+        case $.TR: {
+            // Ignore token
+            break;
+        }
+        default: {
+            tokenInTable(p, token);
+        }
+    }
+}
+function tokenInTable(p, token) {
+    const savedFosterParentingState = p.fosterParentingEnabled;
+    p.fosterParentingEnabled = true;
+    // Process token in `In Body` mode
+    modeInBody(p, token);
+    p.fosterParentingEnabled = savedFosterParentingState;
+}
+// The "in table text" insertion mode
+//------------------------------------------------------------------
+function whitespaceCharacterInTableText(p, token) {
+    p.pendingCharacterTokens.push(token);
+}
+function characterInTableText(p, token) {
+    p.pendingCharacterTokens.push(token);
+    p.hasNonWhitespacePendingCharacterToken = true;
+}
+function tokenInTableText(p, token) {
+    let i = 0;
+    if (p.hasNonWhitespacePendingCharacterToken) {
+        for (; i < p.pendingCharacterTokens.length; i++) {
+            tokenInTable(p, p.pendingCharacterTokens[i]);
+        }
+    }
+    else {
+        for (; i < p.pendingCharacterTokens.length; i++) {
+            p._insertCharacters(p.pendingCharacterTokens[i]);
+        }
+    }
+    p.insertionMode = p.originalInsertionMode;
+    p._processToken(token);
+}
+// The "in caption" insertion mode
+//------------------------------------------------------------------
+const TABLE_VOID_ELEMENTS = new Set([$.CAPTION, $.COL, $.COLGROUP, $.TBODY, $.TD, $.TFOOT, $.TH, $.THEAD, $.TR]);
+function startTagInCaption(p, token) {
+    const tn = token.tagID;
+    if (TABLE_VOID_ELEMENTS.has(tn)) {
+        if (p.openElements.hasInTableScope($.CAPTION)) {
+            p.openElements.generateImpliedEndTags();
+            p.openElements.popUntilTagNamePopped($.CAPTION);
+            p.activeFormattingElements.clearToLastMarker();
+            p.insertionMode = InsertionMode.IN_TABLE;
+            startTagInTable(p, token);
+        }
+    }
+    else {
+        startTagInBody(p, token);
+    }
+}
+function endTagInCaption(p, token) {
+    const tn = token.tagID;
+    switch (tn) {
+        case $.CAPTION:
+        case $.TABLE: {
+            if (p.openElements.hasInTableScope($.CAPTION)) {
+                p.openElements.generateImpliedEndTags();
+                p.openElements.popUntilTagNamePopped($.CAPTION);
+                p.activeFormattingElements.clearToLastMarker();
+                p.insertionMode = InsertionMode.IN_TABLE;
+                if (tn === $.TABLE) {
+                    endTagInTable(p, token);
+                }
+            }
+            break;
+        }
+        case $.BODY:
+        case $.COL:
+        case $.COLGROUP:
+        case $.HTML:
+        case $.TBODY:
+        case $.TD:
+        case $.TFOOT:
+        case $.TH:
+        case $.THEAD:
+        case $.TR: {
+            // Ignore token
+            break;
+        }
+        default: {
+            endTagInBody(p, token);
+        }
+    }
+}
+// The "in column group" insertion mode
+//------------------------------------------------------------------
+function startTagInColumnGroup(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.COL: {
+            p._appendElement(token, NS.HTML);
+            token.ackSelfClosing = true;
+            break;
+        }
+        case $.TEMPLATE: {
+            startTagInHead(p, token);
+            break;
+        }
+        default: {
+            tokenInColumnGroup(p, token);
+        }
+    }
+}
+function endTagInColumnGroup(p, token) {
+    switch (token.tagID) {
+        case $.COLGROUP: {
+            if (p.openElements.currentTagId === $.COLGROUP) {
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE;
+            }
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        case $.COL: {
+            // Ignore token
+            break;
+        }
+        default: {
+            tokenInColumnGroup(p, token);
+        }
+    }
+}
+function tokenInColumnGroup(p, token) {
+    if (p.openElements.currentTagId === $.COLGROUP) {
+        p.openElements.pop();
+        p.insertionMode = InsertionMode.IN_TABLE;
+        p._processToken(token);
+    }
+}
+// The "in table body" insertion mode
+//------------------------------------------------------------------
+function startTagInTableBody(p, token) {
+    switch (token.tagID) {
+        case $.TR: {
+            p.openElements.clearBackToTableBodyContext();
+            p._insertElement(token, NS.HTML);
+            p.insertionMode = InsertionMode.IN_ROW;
+            break;
+        }
+        case $.TH:
+        case $.TD: {
+            p.openElements.clearBackToTableBodyContext();
+            p._insertFakeElement(TN.TR, $.TR);
+            p.insertionMode = InsertionMode.IN_ROW;
+            startTagInRow(p, token);
+            break;
+        }
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD: {
+            if (p.openElements.hasTableBodyContextInTableScope()) {
+                p.openElements.clearBackToTableBodyContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE;
+                startTagInTable(p, token);
+            }
+            break;
+        }
+        default: {
+            startTagInTable(p, token);
+        }
+    }
+}
+function endTagInTableBody(p, token) {
+    const tn = token.tagID;
+    switch (token.tagID) {
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD: {
+            if (p.openElements.hasInTableScope(tn)) {
+                p.openElements.clearBackToTableBodyContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE;
+            }
+            break;
+        }
+        case $.TABLE: {
+            if (p.openElements.hasTableBodyContextInTableScope()) {
+                p.openElements.clearBackToTableBodyContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE;
+                endTagInTable(p, token);
+            }
+            break;
+        }
+        case $.BODY:
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.HTML:
+        case $.TD:
+        case $.TH:
+        case $.TR: {
+            // Ignore token
+            break;
+        }
+        default: {
+            endTagInTable(p, token);
+        }
+    }
+}
+// The "in row" insertion mode
+//------------------------------------------------------------------
+function startTagInRow(p, token) {
+    switch (token.tagID) {
+        case $.TH:
+        case $.TD: {
+            p.openElements.clearBackToTableRowContext();
+            p._insertElement(token, NS.HTML);
+            p.insertionMode = InsertionMode.IN_CELL;
+            p.activeFormattingElements.insertMarker();
+            break;
+        }
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD:
+        case $.TR: {
+            if (p.openElements.hasInTableScope($.TR)) {
+                p.openElements.clearBackToTableRowContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE_BODY;
+                startTagInTableBody(p, token);
+            }
+            break;
+        }
+        default: {
+            startTagInTable(p, token);
+        }
+    }
+}
+function endTagInRow(p, token) {
+    switch (token.tagID) {
+        case $.TR: {
+            if (p.openElements.hasInTableScope($.TR)) {
+                p.openElements.clearBackToTableRowContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE_BODY;
+            }
+            break;
+        }
+        case $.TABLE: {
+            if (p.openElements.hasInTableScope($.TR)) {
+                p.openElements.clearBackToTableRowContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE_BODY;
+                endTagInTableBody(p, token);
+            }
+            break;
+        }
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD: {
+            if (p.openElements.hasInTableScope(token.tagID) || p.openElements.hasInTableScope($.TR)) {
+                p.openElements.clearBackToTableRowContext();
+                p.openElements.pop();
+                p.insertionMode = InsertionMode.IN_TABLE_BODY;
+                endTagInTableBody(p, token);
+            }
+            break;
+        }
+        case $.BODY:
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.HTML:
+        case $.TD:
+        case $.TH: {
+            // Ignore end tag
+            break;
+        }
+        default: {
+            endTagInTable(p, token);
+        }
+    }
+}
+// The "in cell" insertion mode
+//------------------------------------------------------------------
+function startTagInCell(p, token) {
+    const tn = token.tagID;
+    if (TABLE_VOID_ELEMENTS.has(tn)) {
+        if (p.openElements.hasInTableScope($.TD) || p.openElements.hasInTableScope($.TH)) {
+            p._closeTableCell();
+            startTagInRow(p, token);
+        }
+    }
+    else {
+        startTagInBody(p, token);
+    }
+}
+function endTagInCell(p, token) {
+    const tn = token.tagID;
+    switch (tn) {
+        case $.TD:
+        case $.TH: {
+            if (p.openElements.hasInTableScope(tn)) {
+                p.openElements.generateImpliedEndTags();
+                p.openElements.popUntilTagNamePopped(tn);
+                p.activeFormattingElements.clearToLastMarker();
+                p.insertionMode = InsertionMode.IN_ROW;
+            }
+            break;
+        }
+        case $.TABLE:
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD:
+        case $.TR: {
+            if (p.openElements.hasInTableScope(tn)) {
+                p._closeTableCell();
+                endTagInRow(p, token);
+            }
+            break;
+        }
+        case $.BODY:
+        case $.CAPTION:
+        case $.COL:
+        case $.COLGROUP:
+        case $.HTML: {
+            // Ignore token
+            break;
+        }
+        default: {
+            endTagInBody(p, token);
+        }
+    }
+}
+// The "in select" insertion mode
+//------------------------------------------------------------------
+function startTagInSelect(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.OPTION: {
+            if (p.openElements.currentTagId === $.OPTION) {
+                p.openElements.pop();
+            }
+            p._insertElement(token, NS.HTML);
+            break;
+        }
+        case $.OPTGROUP: {
+            if (p.openElements.currentTagId === $.OPTION) {
+                p.openElements.pop();
+            }
+            if (p.openElements.currentTagId === $.OPTGROUP) {
+                p.openElements.pop();
+            }
+            p._insertElement(token, NS.HTML);
+            break;
+        }
+        case $.HR: {
+            if (p.openElements.currentTagId === $.OPTION) {
+                p.openElements.pop();
+            }
+            if (p.openElements.currentTagId === $.OPTGROUP) {
+                p.openElements.pop();
+            }
+            p._appendElement(token, NS.HTML);
+            token.ackSelfClosing = true;
+            break;
+        }
+        case $.INPUT:
+        case $.KEYGEN:
+        case $.TEXTAREA:
+        case $.SELECT: {
+            if (p.openElements.hasInSelectScope($.SELECT)) {
+                p.openElements.popUntilTagNamePopped($.SELECT);
+                p._resetInsertionMode();
+                if (token.tagID !== $.SELECT) {
+                    p._processStartTag(token);
+                }
+            }
+            break;
+        }
+        case $.SCRIPT:
+        case $.TEMPLATE: {
+            startTagInHead(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+function endTagInSelect(p, token) {
+    switch (token.tagID) {
+        case $.OPTGROUP: {
+            if (p.openElements.stackTop > 0 &&
+                p.openElements.currentTagId === $.OPTION &&
+                p.openElements.tagIDs[p.openElements.stackTop - 1] === $.OPTGROUP) {
+                p.openElements.pop();
+            }
+            if (p.openElements.currentTagId === $.OPTGROUP) {
+                p.openElements.pop();
+            }
+            break;
+        }
+        case $.OPTION: {
+            if (p.openElements.currentTagId === $.OPTION) {
+                p.openElements.pop();
+            }
+            break;
+        }
+        case $.SELECT: {
+            if (p.openElements.hasInSelectScope($.SELECT)) {
+                p.openElements.popUntilTagNamePopped($.SELECT);
+                p._resetInsertionMode();
+            }
+            break;
+        }
+        case $.TEMPLATE: {
+            templateEndTagInHead(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+// The "in select in table" insertion mode
+//------------------------------------------------------------------
+function startTagInSelectInTable(p, token) {
+    const tn = token.tagID;
+    if (tn === $.CAPTION ||
+        tn === $.TABLE ||
+        tn === $.TBODY ||
+        tn === $.TFOOT ||
+        tn === $.THEAD ||
+        tn === $.TR ||
+        tn === $.TD ||
+        tn === $.TH) {
+        p.openElements.popUntilTagNamePopped($.SELECT);
+        p._resetInsertionMode();
+        p._processStartTag(token);
+    }
+    else {
+        startTagInSelect(p, token);
+    }
+}
+function endTagInSelectInTable(p, token) {
+    const tn = token.tagID;
+    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.onEndTag(token);
+        }
+    }
+    else {
+        endTagInSelect(p, token);
+    }
+}
+// The "in template" insertion mode
+//------------------------------------------------------------------
+function startTagInTemplate(p, token) {
+    switch (token.tagID) {
+        // First, handle tags that can start without a mode change
+        case $.BASE:
+        case $.BASEFONT:
+        case $.BGSOUND:
+        case $.LINK:
+        case $.META:
+        case $.NOFRAMES:
+        case $.SCRIPT:
+        case $.STYLE:
+        case $.TEMPLATE:
+        case $.TITLE: {
+            startTagInHead(p, token);
+            break;
+        }
+        // Re-process the token in the appropriate mode
+        case $.CAPTION:
+        case $.COLGROUP:
+        case $.TBODY:
+        case $.TFOOT:
+        case $.THEAD: {
+            p.tmplInsertionModeStack[0] = InsertionMode.IN_TABLE;
+            p.insertionMode = InsertionMode.IN_TABLE;
+            startTagInTable(p, token);
+            break;
+        }
+        case $.COL: {
+            p.tmplInsertionModeStack[0] = InsertionMode.IN_COLUMN_GROUP;
+            p.insertionMode = InsertionMode.IN_COLUMN_GROUP;
+            startTagInColumnGroup(p, token);
+            break;
+        }
+        case $.TR: {
+            p.tmplInsertionModeStack[0] = InsertionMode.IN_TABLE_BODY;
+            p.insertionMode = InsertionMode.IN_TABLE_BODY;
+            startTagInTableBody(p, token);
+            break;
+        }
+        case $.TD:
+        case $.TH: {
+            p.tmplInsertionModeStack[0] = InsertionMode.IN_ROW;
+            p.insertionMode = InsertionMode.IN_ROW;
+            startTagInRow(p, token);
+            break;
+        }
+        default: {
+            p.tmplInsertionModeStack[0] = InsertionMode.IN_BODY;
+            p.insertionMode = InsertionMode.IN_BODY;
+            startTagInBody(p, token);
+        }
+    }
+}
+function endTagInTemplate(p, token) {
+    if (token.tagID === $.TEMPLATE) {
+        templateEndTagInHead(p, token);
+    }
+}
+function eofInTemplate(p, token) {
+    if (p.openElements.tmplCount > 0) {
+        p.openElements.popUntilTagNamePopped($.TEMPLATE);
+        p.activeFormattingElements.clearToLastMarker();
+        p.tmplInsertionModeStack.shift();
+        p._resetInsertionMode();
+        p.onEof(token);
+    }
+    else {
+        stopParsing(p, token);
+    }
+}
+// The "after body" insertion mode
+//------------------------------------------------------------------
+function startTagAfterBody(p, token) {
+    if (token.tagID === $.HTML) {
+        startTagInBody(p, token);
+    }
+    else {
+        tokenAfterBody(p, token);
+    }
+}
+function endTagAfterBody(p, token) {
+    var _a;
+    if (token.tagID === $.HTML) {
+        if (!p.fragmentContext) {
+            p.insertionMode = InsertionMode.AFTER_AFTER_BODY;
+        }
+        //NOTE: <html> is never popped from the stack, so we need to updated
+        //the end location explicitly.
+        if (p.options.sourceCodeLocationInfo && p.openElements.tagIDs[0] === $.HTML) {
+            p._setEndLocation(p.openElements.items[0], token);
+            // Update the body element, if it doesn't have an end tag
+            const bodyElement = p.openElements.items[1];
+            if (bodyElement && !((_a = p.treeAdapter.getNodeSourceCodeLocation(bodyElement)) === null || _a === void 0 ? void 0 : _a.endTag)) {
+                p._setEndLocation(bodyElement, token);
+            }
+        }
+    }
+    else {
+        tokenAfterBody(p, token);
+    }
+}
+function tokenAfterBody(p, token) {
+    p.insertionMode = InsertionMode.IN_BODY;
+    modeInBody(p, token);
+}
+// The "in frameset" insertion mode
+//------------------------------------------------------------------
+function startTagInFrameset(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.FRAMESET: {
+            p._insertElement(token, NS.HTML);
+            break;
+        }
+        case $.FRAME: {
+            p._appendElement(token, NS.HTML);
+            token.ackSelfClosing = true;
+            break;
+        }
+        case $.NOFRAMES: {
+            startTagInHead(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+function endTagInFrameset(p, token) {
+    if (token.tagID === $.FRAMESET && !p.openElements.isRootHtmlElementCurrent()) {
+        p.openElements.pop();
+        if (!p.fragmentContext && p.openElements.currentTagId !== $.FRAMESET) {
+            p.insertionMode = InsertionMode.AFTER_FRAMESET;
+        }
+    }
+}
+// The "after frameset" insertion mode
+//------------------------------------------------------------------
+function startTagAfterFrameset(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.NOFRAMES: {
+            startTagInHead(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+function endTagAfterFrameset(p, token) {
+    if (token.tagID === $.HTML) {
+        p.insertionMode = InsertionMode.AFTER_AFTER_FRAMESET;
+    }
+}
+// The "after after body" insertion mode
+//------------------------------------------------------------------
+function startTagAfterAfterBody(p, token) {
+    if (token.tagID === $.HTML) {
+        startTagInBody(p, token);
+    }
+    else {
+        tokenAfterAfterBody(p, token);
+    }
+}
+function tokenAfterAfterBody(p, token) {
+    p.insertionMode = InsertionMode.IN_BODY;
+    modeInBody(p, token);
+}
+// The "after after frameset" insertion mode
+//------------------------------------------------------------------
+function startTagAfterAfterFrameset(p, token) {
+    switch (token.tagID) {
+        case $.HTML: {
+            startTagInBody(p, token);
+            break;
+        }
+        case $.NOFRAMES: {
+            startTagInHead(p, token);
+            break;
+        }
+        default:
+        // Do nothing
+    }
+}
+// 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 popUntilHtmlOrIntegrationPoint(p) {
+    while (p.treeAdapter.getNamespaceURI(p.openElements.current) !== NS.HTML &&
+        p.openElements.currentTagId !== undefined &&
+        !p._isIntegrationPoint(p.openElements.currentTagId, p.openElements.current)) {
+        p.openElements.pop();
+    }
+}
+function startTagInForeignContent(p, token) {
+    if (foreignContent.causesExit(token)) {
+        popUntilHtmlOrIntegrationPoint(p);
+        p._startTagOutsideForeignContent(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) {
+    if (token.tagID === $.P || token.tagID === $.BR) {
+        popUntilHtmlOrIntegrationPoint(p);
+        p._endTagOutsideForeignContent(token);
+        return;
+    }
+    for (let i = p.openElements.stackTop; i > 0; i--) {
+        const element = p.openElements.items[i];
+        if (p.treeAdapter.getNamespaceURI(element) === NS.HTML) {
+            p._endTagOutsideForeignContent(token);
+            break;
+        }
+        const tagName = p.treeAdapter.getTagName(element);
+        if (tagName.toLowerCase() === token.tagName) {
+            //NOTE: update the token tag name for `_setEndLocation`.
+            token.tagName = tagName;
+            p.openElements.shortenToLength(i);
+            break;
+        }
+    }
+}
-- 
cgit v1.2.3