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

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2023-10-03 11:14:36 +08:00
import { TAG_ID as $, NS, isNumberedHeader } from '../common/html.js';
//Element utils
const IMPLICIT_END_TAG_REQUIRED = new Set([$.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,
$.TR,
]);
const SCOPING_ELEMENT_NS = new Map([
[$.APPLET, NS.HTML],
[$.CAPTION, NS.HTML],
[$.HTML, NS.HTML],
[$.MARQUEE, NS.HTML],
[$.OBJECT, NS.HTML],
[$.TABLE, NS.HTML],
[$.TD, NS.HTML],
[$.TEMPLATE, NS.HTML],
[$.TH, NS.HTML],
[$.ANNOTATION_XML, NS.MATHML],
[$.MI, NS.MATHML],
[$.MN, NS.MATHML],
[$.MO, NS.MATHML],
[$.MS, NS.MATHML],
[$.MTEXT, NS.MATHML],
[$.DESC, NS.SVG],
[$.FOREIGN_OBJECT, NS.SVG],
[$.TITLE, NS.SVG],
]);
const NAMED_HEADERS = [$.H1, $.H2, $.H3, $.H4, $.H5, $.H6];
const TABLE_ROW_CONTEXT = [$.TR, $.TEMPLATE, $.HTML];
const TABLE_BODY_CONTEXT = [$.TBODY, $.TFOOT, $.THEAD, $.TEMPLATE, $.HTML];
const TABLE_CONTEXT = [$.TABLE, $.TEMPLATE, $.HTML];
const TABLE_CELLS = [$.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();
}
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(targetIdx < 0 ? 0 : targetIdx);
}
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(idx < 0 ? 0 : idx);
}
popUntilPopped(tagNames, targetNS) {
const idx = this._indexOfTagNames(tagNames, targetNS);
this.shortenToLength(idx < 0 ? 0 : idx);
}
popUntilNumberedHeaderPopped() {
this.popUntilPopped(NAMED_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.includes(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
hasInScope(tagName) {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (tn === tagName && ns === NS.HTML) {
return true;
}
if (SCOPING_ELEMENT_NS.get(tn) === ns) {
return false;
}
}
return true;
}
hasNumberedHeaderInScope() {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (isNumberedHeader(tn) && ns === NS.HTML) {
return true;
}
if (SCOPING_ELEMENT_NS.get(tn) === ns) {
return false;
}
}
return true;
}
hasInListItemScope(tagName) {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (tn === tagName && ns === NS.HTML) {
return true;
}
if (((tn === $.UL || tn === $.OL) && ns === NS.HTML) || SCOPING_ELEMENT_NS.get(tn) === ns) {
return false;
}
}
return true;
}
hasInButtonScope(tagName) {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (tn === tagName && ns === NS.HTML) {
return true;
}
if ((tn === $.BUTTON && ns === NS.HTML) || SCOPING_ELEMENT_NS.get(tn) === ns) {
return false;
}
}
return true;
}
hasInTableScope(tagName) {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (ns !== NS.HTML) {
continue;
}
if (tn === tagName) {
return true;
}
if (tn === $.TABLE || tn === $.TEMPLATE || tn === $.HTML) {
return false;
}
}
return true;
}
hasTableBodyContextInTableScope() {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (ns !== NS.HTML) {
continue;
}
if (tn === $.TBODY || tn === $.THEAD || tn === $.TFOOT) {
return true;
}
if (tn === $.TABLE || tn === $.HTML) {
return false;
}
}
return true;
}
hasInSelectScope(tagName) {
for (let i = this.stackTop; i >= 0; i--) {
const tn = this.tagIDs[i];
const ns = this.treeAdapter.getNamespaceURI(this.items[i]);
if (ns !== NS.HTML) {
continue;
}
if (tn === tagName) {
return true;
}
if (tn !== $.OPTION && tn !== $.OPTGROUP) {
return false;
}
}
return true;
}
//Implied end tags
generateImpliedEndTags() {
while (IMPLICIT_END_TAG_REQUIRED.has(this.currentTagId)) {
this.pop();
}
}
generateImpliedEndTagsThoroughly() {
while (IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
this.pop();
}
}
generateImpliedEndTagsWithExclusion(exclusionId) {
while (this.currentTagId !== exclusionId && IMPLICIT_END_TAG_REQUIRED_THOROUGHLY.has(this.currentTagId)) {
this.pop();
}
}
}
2023-09-25 15:58:56 +08:00
//# sourceMappingURL=open-element-stack.js.map