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frontend/node_modules/parse5/dist/parser/formatting-element-list.d.ts

@@ -0,0 +1,36 @@
+import type { TagToken } from '../common/token.js';
+import type { TreeAdapter, TreeAdapterTypeMap } from '../tree-adapters/interface.js';
+export declare enum EntryType {
+    Marker = 0,
+    Element = 1
+}
+interface MarkerEntry {
+    type: EntryType.Marker;
+}
+export interface ElementEntry<T extends TreeAdapterTypeMap> {
+    type: EntryType.Element;
+    element: T['element'];
+    token: TagToken;
+}
+export type Entry<T extends TreeAdapterTypeMap> = MarkerEntry | ElementEntry<T>;
+export declare class FormattingElementList<T extends TreeAdapterTypeMap> {
+    private treeAdapter;
+    entries: Entry<T>[];
+    bookmark: Entry<T> | null;
+    constructor(treeAdapter: TreeAdapter<T>);
+    private _getNoahArkConditionCandidates;
+    private _ensureNoahArkCondition;
+    insertMarker(): void;
+    pushElement(element: T['element'], token: TagToken): void;
+    insertElementAfterBookmark(element: T['element'], token: TagToken): void;
+    removeEntry(entry: Entry<T>): void;
+    /**
+     * Clears the list of formatting elements up to the last marker.
+     *
+     * @see https://html.spec.whatwg.org/multipage/parsing.html#clear-the-list-of-active-formatting-elements-up-to-the-last-marker
+     */
+    clearToLastMarker(): void;
+    getElementEntryInScopeWithTagName(tagName: string): ElementEntry<T> | null;
+    getElementEntry(element: T['element']): ElementEntry<T> | undefined;
+}
+export {};

frontend/node_modules/parse5/dist/parser/formatting-element-list.js

@@ -0,0 +1,110 @@
+//Const
+const NOAH_ARK_CAPACITY = 3;
+export var EntryType;
+(function (EntryType) {
+    EntryType[EntryType["Marker"] = 0] = "Marker";
+    EntryType[EntryType["Element"] = 1] = "Element";
+})(EntryType || (EntryType = {}));
+const MARKER = { type: EntryType.Marker };
+//List of formatting elements
+export class FormattingElementList {
+    constructor(treeAdapter) {
+        this.treeAdapter = treeAdapter;
+        this.entries = [];
+        this.bookmark = null;
+    }
+    //Noah Ark's condition
+    //OPTIMIZATION: at first we try to find possible candidates for exclusion using
+    //lightweight heuristics without thorough attributes check.
+    _getNoahArkConditionCandidates(newElement, neAttrs) {
+        const candidates = [];
+        const neAttrsLength = neAttrs.length;
+        const neTagName = this.treeAdapter.getTagName(newElement);
+        const neNamespaceURI = this.treeAdapter.getNamespaceURI(newElement);
+        for (let i = 0; i < this.entries.length; i++) {
+            const entry = this.entries[i];
+            if (entry.type === EntryType.Marker) {
+                break;
+            }
+            const { element } = entry;
+            if (this.treeAdapter.getTagName(element) === neTagName &&
+                this.treeAdapter.getNamespaceURI(element) === neNamespaceURI) {
+                const elementAttrs = this.treeAdapter.getAttrList(element);
+                if (elementAttrs.length === neAttrsLength) {
+                    candidates.push({ idx: i, attrs: elementAttrs });
+                }
+            }
+        }
+        return candidates;
+    }
+    _ensureNoahArkCondition(newElement) {
+        if (this.entries.length < NOAH_ARK_CAPACITY)
+            return;
+        const neAttrs = this.treeAdapter.getAttrList(newElement);
+        const candidates = this._getNoahArkConditionCandidates(newElement, neAttrs);
+        if (candidates.length < NOAH_ARK_CAPACITY)
+            return;
+        //NOTE: build attrs map for the new element, so we can perform fast lookups
+        const neAttrsMap = new Map(neAttrs.map((neAttr) => [neAttr.name, neAttr.value]));
+        let validCandidates = 0;
+        //NOTE: remove bottommost candidates, until Noah's Ark condition will not be met
+        for (let i = 0; i < candidates.length; i++) {
+            const candidate = candidates[i];
+            // We know that `candidate.attrs.length === neAttrs.length`
+            if (candidate.attrs.every((cAttr) => neAttrsMap.get(cAttr.name) === cAttr.value)) {
+                validCandidates += 1;
+                if (validCandidates >= NOAH_ARK_CAPACITY) {
+                    this.entries.splice(candidate.idx, 1);
+                }
+            }
+        }
+    }
+    //Mutations
+    insertMarker() {
+        this.entries.unshift(MARKER);
+    }
+    pushElement(element, token) {
+        this._ensureNoahArkCondition(element);
+        this.entries.unshift({
+            type: EntryType.Element,
+            element,
+            token,
+        });
+    }
+    insertElementAfterBookmark(element, token) {
+        const bookmarkIdx = this.entries.indexOf(this.bookmark);
+        this.entries.splice(bookmarkIdx, 0, {
+            type: EntryType.Element,
+            element,
+            token,
+        });
+    }
+    removeEntry(entry) {
+        const entryIndex = this.entries.indexOf(entry);
+        if (entryIndex !== -1) {
+            this.entries.splice(entryIndex, 1);
+        }
+    }
+    /**
+     * Clears the list of formatting elements up to the last marker.
+     *
+     * @see https://html.spec.whatwg.org/multipage/parsing.html#clear-the-list-of-active-formatting-elements-up-to-the-last-marker
+     */
+    clearToLastMarker() {
+        const markerIdx = this.entries.indexOf(MARKER);
+        if (markerIdx === -1) {
+            this.entries.length = 0;
+        }
+        else {
+            this.entries.splice(0, markerIdx + 1);
+        }
+    }
+    //Search
+    getElementEntryInScopeWithTagName(tagName) {
+        const entry = this.entries.find((entry) => entry.type === EntryType.Marker || this.treeAdapter.getTagName(entry.element) === tagName);
+        return entry && entry.type === EntryType.Element ? entry : null;
+    }
+    getElementEntry(element) {
+        return this.entries.find((entry) => entry.type === EntryType.Element && entry.element === element);
+    }
+}

frontend/node_modules/parse5/dist/parser/open-element-stack.js

@@ -0,0 +1,324 @@
+import { TAG_ID as $, NS, NUMBERED_HEADERS } from '../common/html.js';
+//Element utils
+const IMPLICIT_END_TAG_REQUIRED = new Set([$.DD, $.DT, $.LI, $.OPTGROUP, $.OPTION, $.P, $.RB, $.RP, $.RT, $.RTC]);
+const IMPLICIT_END_TAG_REQUIRED_THOROUGHLY = new Set([
+    ...IMPLICIT_END_TAG_REQUIRED,
+    $.CAPTION,
+    $.COLGROUP,
+    $.TBODY,
+    $.TD,
+    $.TFOOT,
+    $.TH,
+    $.THEAD,
+    $.TR,
+]);
+const SCOPING_ELEMENTS_HTML = new Set([
+    $.APPLET,
+    $.CAPTION,
+    $.HTML,
+    $.MARQUEE,
+    $.OBJECT,
+    $.TABLE,
+    $.TD,
+    $.TEMPLATE,
+    $.TH,
+]);
+const SCOPING_ELEMENTS_HTML_LIST = new Set([...SCOPING_ELEMENTS_HTML, $.OL, $.UL]);
+const SCOPING_ELEMENTS_HTML_BUTTON = new Set([...SCOPING_ELEMENTS_HTML, $.BUTTON]);
+const SCOPING_ELEMENTS_MATHML = new Set([$.ANNOTATION_XML, $.MI, $.MN, $.MO, $.MS, $.MTEXT]);
+const SCOPING_ELEMENTS_SVG = new Set([$.DESC, $.FOREIGN_OBJECT, $.TITLE]);
+const TABLE_ROW_CONTEXT = new Set([$.TR, $.TEMPLATE, $.HTML]);
+const TABLE_BODY_CONTEXT = new Set([$.TBODY, $.TFOOT, $.THEAD, $.TEMPLATE, $.HTML]);
+const TABLE_CONTEXT = new Set([$.TABLE, $.TEMPLATE, $.HTML]);
+const TABLE_CELLS = new Set([$.TD, $.TH]);
+//Stack of open elements
+export class OpenElementStack {
+    get currentTmplContentOrNode() {
+        return this._isInTemplate() ? this.treeAdapter.getTemplateContent(this.current) : this.current;
+    }
+    constructor(document, treeAdapter, handler) {
+        this.treeAdapter = treeAdapter;
+        this.handler = handler;
+        this.items = [];
+        this.tagIDs = [];
+        this.stackTop = -1;
+        this.tmplCount = 0;
+        this.currentTagId = $.UNKNOWN;
+        this.current = document;
+    }
+    //Index of element
+    _indexOf(element) {
+        return this.items.lastIndexOf(element, this.stackTop);
+    }
+    //Update current element
+    _isInTemplate() {
+        return this.currentTagId === $.TEMPLATE && this.treeAdapter.getNamespaceURI(this.current) === NS.HTML;
+    }
+    _updateCurrentElement() {
+        this.current = this.items[this.stackTop];
+        this.currentTagId = this.tagIDs[this.stackTop];
+    }
+    //Mutations
+    push(element, tagID) {
+        this.stackTop++;
+        this.items[this.stackTop] = element;
+        this.current = element;
+        this.tagIDs[this.stackTop] = tagID;
+        this.currentTagId = tagID;
+        if (this._isInTemplate()) {
+            this.tmplCount++;
+        }
+        this.handler.onItemPush(element, tagID, true);
+    }
+    pop() {
+        const popped = this.current;
+        if (this.tmplCount > 0 && this._isInTemplate()) {
+            this.tmplCount--;
+        }
+        this.stackTop--;
+        this._updateCurrentElement();
+        this.handler.onItemPop(popped, true);
+    }
+    replace(oldElement, newElement) {
+        const idx = this._indexOf(oldElement);
+        this.items[idx] = newElement;
+        if (idx === this.stackTop) {
+            this.current = newElement;
+        }
+    }
+    insertAfter(referenceElement, newElement, newElementID) {
+        const insertionIdx = this._indexOf(referenceElement) + 1;
+        this.items.splice(insertionIdx, 0, newElement);
+        this.tagIDs.splice(insertionIdx, 0, newElementID);
+        this.stackTop++;
+        if (insertionIdx === this.stackTop) {
+            this._updateCurrentElement();
+        }
+        if (this.current && this.currentTagId !== undefined) {
+            this.handler.onItemPush(this.current, this.currentTagId, insertionIdx === this.stackTop);
+        }
+    }
+    popUntilTagNamePopped(tagName) {
+        let targetIdx = this.stackTop + 1;
+        do {
+            targetIdx = this.tagIDs.lastIndexOf(tagName, targetIdx - 1);
+        } while (targetIdx > 0 && this.treeAdapter.getNamespaceURI(this.items[targetIdx]) !== NS.HTML);
+        this.shortenToLength(Math.max(targetIdx, 0));
+    }
+    shortenToLength(idx) {
+        while (this.stackTop >= idx) {
+            const popped = this.current;
+            if (this.tmplCount > 0 && this._isInTemplate()) {
+                this.tmplCount -= 1;
+            }
+            this.stackTop--;
+            this._updateCurrentElement();
+            this.handler.onItemPop(popped, this.stackTop < idx);
+        }
+    }
+    popUntilElementPopped(element) {
+        const idx = this._indexOf(element);
+        this.shortenToLength(Math.max(idx, 0));
+    }
+    popUntilPopped(tagNames, targetNS) {
+        const idx = this._indexOfTagNames(tagNames, targetNS);
+        this.shortenToLength(Math.max(idx, 0));
+    }
+    popUntilNumberedHeaderPopped() {
+        this.popUntilPopped(NUMBERED_HEADERS, NS.HTML);
+    }
+    popUntilTableCellPopped() {
+        this.popUntilPopped(TABLE_CELLS, NS.HTML);
+    }
+    popAllUpToHtmlElement() {
+        //NOTE: here we assume that the root <html> element is always first in the open element stack, so
+        //we perform this fast stack clean up.
+        this.tmplCount = 0;
+        this.shortenToLength(1);
+    }
+    _indexOfTagNames(tagNames, namespace) {
+        for (let i = this.stackTop; i >= 0; i--) {
+            if (tagNames.has(this.tagIDs[i]) && this.treeAdapter.getNamespaceURI(this.items[i]) === namespace) {
+                return i;
+            }
+        }
+        return -1;
+    }
+    clearBackTo(tagNames, targetNS) {
+        const idx = this._indexOfTagNames(tagNames, targetNS);
+        this.shortenToLength(idx + 1);
+    }
+    clearBackToTableContext() {
+        this.clearBackTo(TABLE_CONTEXT, NS.HTML);
+    }
+    clearBackToTableBodyContext() {
+        this.clearBackTo(TABLE_BODY_CONTEXT, NS.HTML);
+    }
+    clearBackToTableRowContext() {
+        this.clearBackTo(TABLE_ROW_CONTEXT, NS.HTML);
+    }
+    remove(element) {
+        const idx = this._indexOf(element);
+        if (idx >= 0) {
+            if (idx === this.stackTop) {
+                this.pop();
+            }
+            else {
+                this.items.splice(idx, 1);
+                this.tagIDs.splice(idx, 1);
+                this.stackTop--;
+                this._updateCurrentElement();
+                this.handler.onItemPop(element, false);
+            }
+        }
+    }
+    //Search
+    tryPeekProperlyNestedBodyElement() {
+        //Properly nested <body> element (should be second element in stack).
+        return this.stackTop >= 1 && this.tagIDs[1] === $.BODY ? this.items[1] : null;
+    }
+    contains(element) {
+        return this._indexOf(element) > -1;
+    }
+    getCommonAncestor(element) {
+        const elementIdx = this._indexOf(element) - 1;
+        return elementIdx >= 0 ? this.items[elementIdx] : null;
+    }
+    isRootHtmlElementCurrent() {
+        return this.stackTop === 0 && this.tagIDs[0] === $.HTML;
+    }
+    //Element in scope
+    hasInDynamicScope(tagName, htmlScope) {
+        for (let i = this.stackTop; i >= 0; i--) {
+            const tn = this.tagIDs[i];
+            switch (this.treeAdapter.getNamespaceURI(this.items[i])) {
+                case NS.HTML: {
+                    if (tn === tagName)
+                        return true;
+                    if (htmlScope.has(tn))
+                        return false;
+                    break;
+                }
+                case NS.SVG: {
+                    if (SCOPING_ELEMENTS_SVG.has(tn))
+                        return false;
+                    break;
+                }
+                case NS.MATHML: {
+                    if (SCOPING_ELEMENTS_MATHML.has(tn))
+                        return false;
+                    break;
+                }
+            }
+        }
+        return true;
+    }
+    hasInScope(tagName) {
+        return this.hasInDynamicScope(tagName, SCOPING_ELEMENTS_HTML);
+    }
+    hasInListItemScope(tagName) {
+        return this.hasInDynamicScope(tagName, SCOPING_ELEMENTS_HTML_LIST);
+    }
+    hasInButtonScope(tagName) {
+        return this.hasInDynamicScope(tagName, SCOPING_ELEMENTS_HTML_BUTTON);
+    }
+    hasNumberedHeaderInScope() {
+        for (let i = this.stackTop; i >= 0; i--) {
+            const tn = this.tagIDs[i];
+            switch (this.treeAdapter.getNamespaceURI(this.items[i])) {
+                case NS.HTML: {
+                    if (NUMBERED_HEADERS.has(tn))
+                        return true;
+                    if (SCOPING_ELEMENTS_HTML.has(tn))
+                        return false;
+                    break;
+                }
+                case NS.SVG: {
+                    if (SCOPING_ELEMENTS_SVG.has(tn))
+                        return false;
+                    break;
+                }
+                case NS.MATHML: {
+                    if (SCOPING_ELEMENTS_MATHML.has(tn))
+                        return false;
+                    break;
+                }
+            }
+        }
+        return true;
+    }
+    hasInTableScope(tagName) {
+        for (let i = this.stackTop; i >= 0; i--) {
+            if (this.treeAdapter.getNamespaceURI(this.items[i]) !== NS.HTML) {
+                continue;
+            }
+            switch (this.tagIDs[i]) {
+                case tagName: {
+                    return true;
+                }
+                case $.TABLE:
+                case $.HTML: {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+    hasTableBodyContextInTableScope() {
+        for (let i = this.stackTop; i >= 0; i--) {
+            if (this.treeAdapter.getNamespaceURI(this.items[i]) !== NS.HTML) {
+                continue;
+            }
+            switch (this.tagIDs[i]) {
+                case $.TBODY:
+                case $.THEAD:
+                case $.TFOOT: {
+                    return true;
+                }
+                case $.TABLE:
+                case $.HTML: {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+    hasInSelectScope(tagName) {
+        for (let i = this.stackTop; i >= 0; i--) {
+            if (this.treeAdapter.getNamespaceURI(this.items[i]) !== NS.HTML) {
+                continue;
+            }
+            switch (this.tagIDs[i]) {
+                case tagName: {
+                    return true;
+                }
+                case $.OPTION:
+                case $.OPTGROUP: {
+                    break;
+                }
+                default: {
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+    //Implied end tags
+    generateImpliedEndTags() {
+        while (this.currentTagId !== undefined && IMPLICIT_END_TAG_REQUIRED.has(this.currentTagId)) {
+            this.pop();
+        }
+    }
+    generateImpliedEndTagsThoroughly() {
+        while (this.currentTagId !== undefined && IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
+            this.pop();
+        }
+    }
+    generateImpliedEndTagsWithExclusion(exclusionId) {
+        while (this.currentTagId !== undefined &&
+            this.currentTagId !== exclusionId &&
+            IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
+            this.pop();
+        }
+    }
+}