1947 lines
57 KiB
JavaScript
1947 lines
57 KiB
JavaScript
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/* **********************************************
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Begin prism-core.js
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********************************************** */
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/// <reference lib="WebWorker"/>
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var _self = (typeof window !== 'undefined')
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? window // if in browser
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: (
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(typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope)
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? self // if in worker
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: {} // if in node js
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);
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/**
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* Prism: Lightweight, robust, elegant syntax highlighting
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*
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* @license MIT <https://opensource.org/licenses/MIT>
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* @author Lea Verou <https://lea.verou.me>
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* @namespace
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* @public
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*/
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var Prism = (function (_self) {
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// Private helper vars
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var lang = /(?:^|\s)lang(?:uage)?-([\w-]+)(?=\s|$)/i;
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var uniqueId = 0;
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// The grammar object for plaintext
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var plainTextGrammar = {};
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var _ = {
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/**
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* By default, Prism will attempt to highlight all code elements (by calling {@link Prism.highlightAll}) on the
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* current page after the page finished loading. This might be a problem if e.g. you wanted to asynchronously load
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* additional languages or plugins yourself.
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*
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* By setting this value to `true`, Prism will not automatically highlight all code elements on the page.
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*
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* You obviously have to change this value before the automatic highlighting started. To do this, you can add an
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* empty Prism object into the global scope before loading the Prism script like this:
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*
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* ```js
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* window.Prism = window.Prism || {};
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* Prism.manual = true;
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* // add a new <script> to load Prism's script
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* ```
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*
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* @default false
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* @type {boolean}
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* @memberof Prism
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* @public
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*/
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manual: _self.Prism && _self.Prism.manual,
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/**
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* By default, if Prism is in a web worker, it assumes that it is in a worker it created itself, so it uses
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* `addEventListener` to communicate with its parent instance. However, if you're using Prism manually in your
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* own worker, you don't want it to do this.
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*
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* By setting this value to `true`, Prism will not add its own listeners to the worker.
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*
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* You obviously have to change this value before Prism executes. To do this, you can add an
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* empty Prism object into the global scope before loading the Prism script like this:
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*
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* ```js
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* window.Prism = window.Prism || {};
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* Prism.disableWorkerMessageHandler = true;
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* // Load Prism's script
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* ```
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*
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* @default false
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* @type {boolean}
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* @memberof Prism
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* @public
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*/
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disableWorkerMessageHandler: _self.Prism && _self.Prism.disableWorkerMessageHandler,
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/**
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* A namespace for utility methods.
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*
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* All function in this namespace that are not explicitly marked as _public_ are for __internal use only__ and may
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* change or disappear at any time.
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*
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* @namespace
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* @memberof Prism
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*/
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util: {
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encode: function encode(tokens) {
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if (tokens instanceof Token) {
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return new Token(tokens.type, encode(tokens.content), tokens.alias);
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} else if (Array.isArray(tokens)) {
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return tokens.map(encode);
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} else {
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return tokens.replace(/&/g, '&').replace(/</g, '<').replace(/\u00a0/g, ' ');
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}
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},
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/**
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* Returns the name of the type of the given value.
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*
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* @param {any} o
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* @returns {string}
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* @example
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* type(null) === 'Null'
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* type(undefined) === 'Undefined'
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* type(123) === 'Number'
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* type('foo') === 'String'
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* type(true) === 'Boolean'
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* type([1, 2]) === 'Array'
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* type({}) === 'Object'
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* type(String) === 'Function'
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* type(/abc+/) === 'RegExp'
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*/
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type: function (o) {
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return Object.prototype.toString.call(o).slice(8, -1);
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},
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/**
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* Returns a unique number for the given object. Later calls will still return the same number.
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*
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* @param {Object} obj
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* @returns {number}
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*/
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objId: function (obj) {
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if (!obj['__id']) {
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Object.defineProperty(obj, '__id', { value: ++uniqueId });
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}
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return obj['__id'];
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},
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/**
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* Creates a deep clone of the given object.
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*
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* The main intended use of this function is to clone language definitions.
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*
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* @param {T} o
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* @param {Record<number, any>} [visited]
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* @returns {T}
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* @template T
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*/
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clone: function deepClone(o, visited) {
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visited = visited || {};
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var clone; var id;
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switch (_.util.type(o)) {
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case 'Object':
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id = _.util.objId(o);
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if (visited[id]) {
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return visited[id];
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}
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clone = /** @type {Record<string, any>} */ ({});
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visited[id] = clone;
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for (var key in o) {
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if (o.hasOwnProperty(key)) {
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clone[key] = deepClone(o[key], visited);
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}
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}
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return /** @type {any} */ (clone);
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case 'Array':
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id = _.util.objId(o);
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if (visited[id]) {
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return visited[id];
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}
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clone = [];
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visited[id] = clone;
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(/** @type {Array} */(/** @type {any} */(o))).forEach(function (v, i) {
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clone[i] = deepClone(v, visited);
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});
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return /** @type {any} */ (clone);
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default:
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return o;
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}
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},
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/**
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* Returns the Prism language of the given element set by a `language-xxxx` or `lang-xxxx` class.
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*
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* If no language is set for the element or the element is `null` or `undefined`, `none` will be returned.
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*
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* @param {Element} element
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* @returns {string}
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*/
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getLanguage: function (element) {
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while (element) {
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var m = lang.exec(element.className);
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if (m) {
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return m[1].toLowerCase();
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}
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element = element.parentElement;
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}
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return 'none';
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},
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/**
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* Sets the Prism `language-xxxx` class of the given element.
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*
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* @param {Element} element
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* @param {string} language
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* @returns {void}
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*/
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setLanguage: function (element, language) {
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// remove all `language-xxxx` classes
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// (this might leave behind a leading space)
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element.className = element.className.replace(RegExp(lang, 'gi'), '');
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// add the new `language-xxxx` class
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// (using `classList` will automatically clean up spaces for us)
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element.classList.add('language-' + language);
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},
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/**
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* Returns the script element that is currently executing.
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*
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* This does __not__ work for line script element.
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*
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* @returns {HTMLScriptElement | null}
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*/
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currentScript: function () {
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if (typeof document === 'undefined') {
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return null;
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}
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if (document.currentScript && document.currentScript.tagName === 'SCRIPT' && 1 < 2 /* hack to trip TS' flow analysis */) {
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return /** @type {any} */ (document.currentScript);
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}
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// IE11 workaround
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// we'll get the src of the current script by parsing IE11's error stack trace
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// this will not work for inline scripts
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try {
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throw new Error();
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} catch (err) {
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// Get file src url from stack. Specifically works with the format of stack traces in IE.
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// A stack will look like this:
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//
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// Error
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// at _.util.currentScript (http://localhost/components/prism-core.js:119:5)
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// at Global code (http://localhost/components/prism-core.js:606:1)
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var src = (/at [^(\r\n]*\((.*):[^:]+:[^:]+\)$/i.exec(err.stack) || [])[1];
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if (src) {
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var scripts = document.getElementsByTagName('script');
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for (var i in scripts) {
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if (scripts[i].src == src) {
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return scripts[i];
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}
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}
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}
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return null;
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}
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},
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/**
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* Returns whether a given class is active for `element`.
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*
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* The class can be activated if `element` or one of its ancestors has the given class and it can be deactivated
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* if `element` or one of its ancestors has the negated version of the given class. The _negated version_ of the
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* given class is just the given class with a `no-` prefix.
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*
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* Whether the class is active is determined by the closest ancestor of `element` (where `element` itself is
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* closest ancestor) that has the given class or the negated version of it. If neither `element` nor any of its
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* ancestors have the given class or the negated version of it, then the default activation will be returned.
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*
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* In the paradoxical situation where the closest ancestor contains __both__ the given class and the negated
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* version of it, the class is considered active.
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*
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* @param {Element} element
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* @param {string} className
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* @param {boolean} [defaultActivation=false]
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* @returns {boolean}
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*/
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isActive: function (element, className, defaultActivation) {
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var no = 'no-' + className;
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while (element) {
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var classList = element.classList;
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if (classList.contains(className)) {
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return true;
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}
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if (classList.contains(no)) {
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return false;
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}
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element = element.parentElement;
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}
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return !!defaultActivation;
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}
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},
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/**
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* This namespace contains all currently loaded languages and the some helper functions to create and modify languages.
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*
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* @namespace
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* @memberof Prism
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* @public
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*/
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languages: {
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/**
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* The grammar for plain, unformatted text.
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*/
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plain: plainTextGrammar,
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plaintext: plainTextGrammar,
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text: plainTextGrammar,
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txt: plainTextGrammar,
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/**
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* Creates a deep copy of the language with the given id and appends the given tokens.
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*
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* If a token in `redef` also appears in the copied language, then the existing token in the copied language
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* will be overwritten at its original position.
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*
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* ## Best practices
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*
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* Since the position of overwriting tokens (token in `redef` that overwrite tokens in the copied language)
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* doesn't matter, they can technically be in any order. However, this can be confusing to others that trying to
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* understand the language definition because, normally, the order of tokens matters in Prism grammars.
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*
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* Therefore, it is encouraged to order overwriting tokens according to the positions of the overwritten tokens.
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* Furthermore, all non-overwriting tokens should be placed after the overwriting ones.
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*
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* @param {string} id The id of the language to extend. This has to be a key in `Prism.languages`.
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* @param {Grammar} redef The new tokens to append.
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* @returns {Grammar} The new language created.
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* @public
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* @example
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* Prism.languages['css-with-colors'] = Prism.languages.extend('css', {
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* // Prism.languages.css already has a 'comment' token, so this token will overwrite CSS' 'comment' token
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* // at its original position
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* 'comment': { ... },
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* // CSS doesn't have a 'color' token, so this token will be appended
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* 'color': /\b(?:red|green|blue)\b/
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* });
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*/
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extend: function (id, redef) {
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var lang = _.util.clone(_.languages[id]);
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for (var key in redef) {
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lang[key] = redef[key];
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}
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return lang;
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},
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/**
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* Inserts tokens _before_ another token in a language definition or any other grammar.
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*
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* ## Usage
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*
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* This helper method makes it easy to modify existing languages. For example, the CSS language definition
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* not only defines CSS highlighting for CSS documents, but also needs to define highlighting for CSS embedded
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* in HTML through `<style>` elements. To do this, it needs to modify `Prism.languages.markup` and add the
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* appropriate tokens. However, `Prism.languages.markup` is a regular JavaScript object literal, so if you do
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* this:
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*
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* ```js
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* Prism.languages.markup.style = {
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* // token
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* };
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* ```
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*
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* then the `style` token will be added (and processed) at the end. `insertBefore` allows you to insert tokens
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* before existing tokens. For the CSS example above, you would use it like this:
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*
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* ```js
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* Prism.languages.insertBefore('markup', 'cdata', {
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* 'style': {
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* // token
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* }
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* });
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* ```
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*
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* ## Special cases
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*
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* If the grammars of `inside` and `insert` have tokens with the same name, the tokens in `inside`'s grammar
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* will be ignored.
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*
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* This behavior can be used to insert tokens after `before`:
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*
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* ```js
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* Prism.languages.insertBefore('markup', 'comment', {
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* 'comment': Prism.languages.markup.comment,
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* // tokens after 'comment'
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* });
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* ```
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*
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* ## Limitations
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*
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* The main problem `insertBefore` has to solve is iteration order. Since ES2015, the iteration order for object
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* properties is guaranteed to be the insertion order (except for integer keys) but some browsers behave
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* differently when keys are deleted and re-inserted. So `insertBefore` can't be implemented by temporarily
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* deleting properties which is necessary to insert at arbitrary positions.
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*
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* To solve this problem, `insertBefore` doesn't actually insert the given tokens into the target object.
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* Instead, it will create a new object and replace all references to the target object with the new one. This
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* can be done without temporarily deleting properties, so the iteration order is well-defined.
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*
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* However, only references that can be reached from `Prism.languages` or `insert` will be replaced. I.e. if
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* you hold the target object in a variable, then the value of the variable will not change.
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*
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* ```js
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* var oldMarkup = Prism.languages.markup;
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* var newMarkup = Prism.languages.insertBefore('markup', 'comment', { ... });
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*
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* assert(oldMarkup !== Prism.languages.markup);
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* assert(newMarkup === Prism.languages.markup);
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* ```
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*
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* @param {string} inside The property of `root` (e.g. a language id in `Prism.languages`) that contains the
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* object to be modified.
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* @param {string} before The key to insert before.
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* @param {Grammar} insert An object containing the key-value pairs to be inserted.
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* @param {Object<string, any>} [root] The object containing `inside`, i.e. the object that contains the
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* object to be modified.
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*
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* Defaults to `Prism.languages`.
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* @returns {Grammar} The new grammar object.
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* @public
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*/
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insertBefore: function (inside, before, insert, root) {
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root = root || /** @type {any} */ (_.languages);
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var grammar = root[inside];
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/** @type {Grammar} */
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var ret = {};
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for (var token in grammar) {
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if (grammar.hasOwnProperty(token)) {
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if (token == before) {
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for (var newToken in insert) {
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if (insert.hasOwnProperty(newToken)) {
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ret[newToken] = insert[newToken];
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}
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}
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}
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// Do not insert token which also occur in insert. See #1525
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if (!insert.hasOwnProperty(token)) {
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ret[token] = grammar[token];
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}
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}
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}
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var old = root[inside];
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root[inside] = ret;
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// Update references in other language definitions
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_.languages.DFS(_.languages, function (key, value) {
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if (value === old && key != inside) {
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this[key] = ret;
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}
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});
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return ret;
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},
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// Traverse a language definition with Depth First Search
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DFS: function DFS(o, callback, type, visited) {
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visited = visited || {};
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var objId = _.util.objId;
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for (var i in o) {
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if (o.hasOwnProperty(i)) {
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callback.call(o, i, o[i], type || i);
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var property = o[i];
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var propertyType = _.util.type(property);
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if (propertyType === 'Object' && !visited[objId(property)]) {
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visited[objId(property)] = true;
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DFS(property, callback, null, visited);
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} else if (propertyType === 'Array' && !visited[objId(property)]) {
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visited[objId(property)] = true;
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DFS(property, callback, i, visited);
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}
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}
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}
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}
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},
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plugins: {},
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/**
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* This is the most high-level function in Prism’s API.
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* It fetches all the elements that have a `.language-xxxx` class and then calls {@link Prism.highlightElement} on
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* each one of them.
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*
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* This is equivalent to `Prism.highlightAllUnder(document, async, callback)`.
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*
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* @param {boolean} [async=false] Same as in {@link Prism.highlightAllUnder}.
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* @param {HighlightCallback} [callback] Same as in {@link Prism.highlightAllUnder}.
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* @memberof Prism
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* @public
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*/
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highlightAll: function (async, callback) {
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_.highlightAllUnder(document, async, callback);
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},
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/**
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* Fetches all the descendants of `container` that have a `.language-xxxx` class and then calls
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* {@link Prism.highlightElement} on each one of them.
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*
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* The following hooks will be run:
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* 1. `before-highlightall`
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* 2. `before-all-elements-highlight`
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* 3. All hooks of {@link Prism.highlightElement} for each element.
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*
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* @param {ParentNode} container The root element, whose descendants that have a `.language-xxxx` class will be highlighted.
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* @param {boolean} [async=false] Whether each element is to be highlighted asynchronously using Web Workers.
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* @param {HighlightCallback} [callback] An optional callback to be invoked on each element after its highlighting is done.
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* @memberof Prism
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* @public
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*/
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highlightAllUnder: function (container, async, callback) {
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var env = {
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callback: callback,
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container: container,
|
||
selector: 'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'
|
||
};
|
||
|
||
_.hooks.run('before-highlightall', env);
|
||
|
||
env.elements = Array.prototype.slice.apply(env.container.querySelectorAll(env.selector));
|
||
|
||
_.hooks.run('before-all-elements-highlight', env);
|
||
|
||
for (var i = 0, element; (element = env.elements[i++]);) {
|
||
_.highlightElement(element, async === true, env.callback);
|
||
}
|
||
},
|
||
|
||
/**
|
||
* Highlights the code inside a single element.
|
||
*
|
||
* The following hooks will be run:
|
||
* 1. `before-sanity-check`
|
||
* 2. `before-highlight`
|
||
* 3. All hooks of {@link Prism.highlight}. These hooks will be run by an asynchronous worker if `async` is `true`.
|
||
* 4. `before-insert`
|
||
* 5. `after-highlight`
|
||
* 6. `complete`
|
||
*
|
||
* Some the above hooks will be skipped if the element doesn't contain any text or there is no grammar loaded for
|
||
* the element's language.
|
||
*
|
||
* @param {Element} element The element containing the code.
|
||
* It must have a class of `language-xxxx` to be processed, where `xxxx` is a valid language identifier.
|
||
* @param {boolean} [async=false] Whether the element is to be highlighted asynchronously using Web Workers
|
||
* to improve performance and avoid blocking the UI when highlighting very large chunks of code. This option is
|
||
* [disabled by default](https://prismjs.com/faq.html#why-is-asynchronous-highlighting-disabled-by-default).
|
||
*
|
||
* Note: All language definitions required to highlight the code must be included in the main `prism.js` file for
|
||
* asynchronous highlighting to work. You can build your own bundle on the
|
||
* [Download page](https://prismjs.com/download.html).
|
||
* @param {HighlightCallback} [callback] An optional callback to be invoked after the highlighting is done.
|
||
* Mostly useful when `async` is `true`, since in that case, the highlighting is done asynchronously.
|
||
* @memberof Prism
|
||
* @public
|
||
*/
|
||
highlightElement: function (element, async, callback) {
|
||
// Find language
|
||
var language = _.util.getLanguage(element);
|
||
var grammar = _.languages[language];
|
||
|
||
// Set language on the element, if not present
|
||
_.util.setLanguage(element, language);
|
||
|
||
// Set language on the parent, for styling
|
||
var parent = element.parentElement;
|
||
if (parent && parent.nodeName.toLowerCase() === 'pre') {
|
||
_.util.setLanguage(parent, language);
|
||
}
|
||
|
||
var code = element.textContent;
|
||
|
||
var env = {
|
||
element: element,
|
||
language: language,
|
||
grammar: grammar,
|
||
code: code
|
||
};
|
||
|
||
function insertHighlightedCode(highlightedCode) {
|
||
env.highlightedCode = highlightedCode;
|
||
|
||
_.hooks.run('before-insert', env);
|
||
|
||
env.element.innerHTML = env.highlightedCode;
|
||
|
||
_.hooks.run('after-highlight', env);
|
||
_.hooks.run('complete', env);
|
||
callback && callback.call(env.element);
|
||
}
|
||
|
||
_.hooks.run('before-sanity-check', env);
|
||
|
||
// plugins may change/add the parent/element
|
||
parent = env.element.parentElement;
|
||
if (parent && parent.nodeName.toLowerCase() === 'pre' && !parent.hasAttribute('tabindex')) {
|
||
parent.setAttribute('tabindex', '0');
|
||
}
|
||
|
||
if (!env.code) {
|
||
_.hooks.run('complete', env);
|
||
callback && callback.call(env.element);
|
||
return;
|
||
}
|
||
|
||
_.hooks.run('before-highlight', env);
|
||
|
||
if (!env.grammar) {
|
||
insertHighlightedCode(_.util.encode(env.code));
|
||
return;
|
||
}
|
||
|
||
if (async && _self.Worker) {
|
||
var worker = new Worker(_.filename);
|
||
|
||
worker.onmessage = function (evt) {
|
||
insertHighlightedCode(evt.data);
|
||
};
|
||
|
||
worker.postMessage(JSON.stringify({
|
||
language: env.language,
|
||
code: env.code,
|
||
immediateClose: true
|
||
}));
|
||
} else {
|
||
insertHighlightedCode(_.highlight(env.code, env.grammar, env.language));
|
||
}
|
||
},
|
||
|
||
/**
|
||
* Low-level function, only use if you know what you’re doing. It accepts a string of text as input
|
||
* and the language definitions to use, and returns a string with the HTML produced.
|
||
*
|
||
* The following hooks will be run:
|
||
* 1. `before-tokenize`
|
||
* 2. `after-tokenize`
|
||
* 3. `wrap`: On each {@link Token}.
|
||
*
|
||
* @param {string} text A string with the code to be highlighted.
|
||
* @param {Grammar} grammar An object containing the tokens to use.
|
||
*
|
||
* Usually a language definition like `Prism.languages.markup`.
|
||
* @param {string} language The name of the language definition passed to `grammar`.
|
||
* @returns {string} The highlighted HTML.
|
||
* @memberof Prism
|
||
* @public
|
||
* @example
|
||
* Prism.highlight('var foo = true;', Prism.languages.javascript, 'javascript');
|
||
*/
|
||
highlight: function (text, grammar, language) {
|
||
var env = {
|
||
code: text,
|
||
grammar: grammar,
|
||
language: language
|
||
};
|
||
_.hooks.run('before-tokenize', env);
|
||
if (!env.grammar) {
|
||
throw new Error('The language "' + env.language + '" has no grammar.');
|
||
}
|
||
env.tokens = _.tokenize(env.code, env.grammar);
|
||
_.hooks.run('after-tokenize', env);
|
||
return Token.stringify(_.util.encode(env.tokens), env.language);
|
||
},
|
||
|
||
/**
|
||
* This is the heart of Prism, and the most low-level function you can use. It accepts a string of text as input
|
||
* and the language definitions to use, and returns an array with the tokenized code.
|
||
*
|
||
* When the language definition includes nested tokens, the function is called recursively on each of these tokens.
|
||
*
|
||
* This method could be useful in other contexts as well, as a very crude parser.
|
||
*
|
||
* @param {string} text A string with the code to be highlighted.
|
||
* @param {Grammar} grammar An object containing the tokens to use.
|
||
*
|
||
* Usually a language definition like `Prism.languages.markup`.
|
||
* @returns {TokenStream} An array of strings and tokens, a token stream.
|
||
* @memberof Prism
|
||
* @public
|
||
* @example
|
||
* let code = `var foo = 0;`;
|
||
* let tokens = Prism.tokenize(code, Prism.languages.javascript);
|
||
* tokens.forEach(token => {
|
||
* if (token instanceof Prism.Token && token.type === 'number') {
|
||
* console.log(`Found numeric literal: ${token.content}`);
|
||
* }
|
||
* });
|
||
*/
|
||
tokenize: function (text, grammar) {
|
||
var rest = grammar.rest;
|
||
if (rest) {
|
||
for (var token in rest) {
|
||
grammar[token] = rest[token];
|
||
}
|
||
|
||
delete grammar.rest;
|
||
}
|
||
|
||
var tokenList = new LinkedList();
|
||
addAfter(tokenList, tokenList.head, text);
|
||
|
||
matchGrammar(text, tokenList, grammar, tokenList.head, 0);
|
||
|
||
return toArray(tokenList);
|
||
},
|
||
|
||
/**
|
||
* @namespace
|
||
* @memberof Prism
|
||
* @public
|
||
*/
|
||
hooks: {
|
||
all: {},
|
||
|
||
/**
|
||
* Adds the given callback to the list of callbacks for the given hook.
|
||
*
|
||
* The callback will be invoked when the hook it is registered for is run.
|
||
* Hooks are usually directly run by a highlight function but you can also run hooks yourself.
|
||
*
|
||
* One callback function can be registered to multiple hooks and the same hook multiple times.
|
||
*
|
||
* @param {string} name The name of the hook.
|
||
* @param {HookCallback} callback The callback function which is given environment variables.
|
||
* @public
|
||
*/
|
||
add: function (name, callback) {
|
||
var hooks = _.hooks.all;
|
||
|
||
hooks[name] = hooks[name] || [];
|
||
|
||
hooks[name].push(callback);
|
||
},
|
||
|
||
/**
|
||
* Runs a hook invoking all registered callbacks with the given environment variables.
|
||
*
|
||
* Callbacks will be invoked synchronously and in the order in which they were registered.
|
||
*
|
||
* @param {string} name The name of the hook.
|
||
* @param {Object<string, any>} env The environment variables of the hook passed to all callbacks registered.
|
||
* @public
|
||
*/
|
||
run: function (name, env) {
|
||
var callbacks = _.hooks.all[name];
|
||
|
||
if (!callbacks || !callbacks.length) {
|
||
return;
|
||
}
|
||
|
||
for (var i = 0, callback; (callback = callbacks[i++]);) {
|
||
callback(env);
|
||
}
|
||
}
|
||
},
|
||
|
||
Token: Token
|
||
};
|
||
_self.Prism = _;
|
||
|
||
|
||
// Typescript note:
|
||
// The following can be used to import the Token type in JSDoc:
|
||
//
|
||
// @typedef {InstanceType<import("./prism-core")["Token"]>} Token
|
||
|
||
/**
|
||
* Creates a new token.
|
||
*
|
||
* @param {string} type See {@link Token#type type}
|
||
* @param {string | TokenStream} content See {@link Token#content content}
|
||
* @param {string|string[]} [alias] The alias(es) of the token.
|
||
* @param {string} [matchedStr=""] A copy of the full string this token was created from.
|
||
* @class
|
||
* @global
|
||
* @public
|
||
*/
|
||
function Token(type, content, alias, matchedStr) {
|
||
/**
|
||
* The type of the token.
|
||
*
|
||
* This is usually the key of a pattern in a {@link Grammar}.
|
||
*
|
||
* @type {string}
|
||
* @see GrammarToken
|
||
* @public
|
||
*/
|
||
this.type = type;
|
||
/**
|
||
* The strings or tokens contained by this token.
|
||
*
|
||
* This will be a token stream if the pattern matched also defined an `inside` grammar.
|
||
*
|
||
* @type {string | TokenStream}
|
||
* @public
|
||
*/
|
||
this.content = content;
|
||
/**
|
||
* The alias(es) of the token.
|
||
*
|
||
* @type {string|string[]}
|
||
* @see GrammarToken
|
||
* @public
|
||
*/
|
||
this.alias = alias;
|
||
// Copy of the full string this token was created from
|
||
this.length = (matchedStr || '').length | 0;
|
||
}
|
||
|
||
/**
|
||
* A token stream is an array of strings and {@link Token Token} objects.
|
||
*
|
||
* Token streams have to fulfill a few properties that are assumed by most functions (mostly internal ones) that process
|
||
* them.
|
||
*
|
||
* 1. No adjacent strings.
|
||
* 2. No empty strings.
|
||
*
|
||
* The only exception here is the token stream that only contains the empty string and nothing else.
|
||
*
|
||
* @typedef {Array<string | Token>} TokenStream
|
||
* @global
|
||
* @public
|
||
*/
|
||
|
||
/**
|
||
* Converts the given token or token stream to an HTML representation.
|
||
*
|
||
* The following hooks will be run:
|
||
* 1. `wrap`: On each {@link Token}.
|
||
*
|
||
* @param {string | Token | TokenStream} o The token or token stream to be converted.
|
||
* @param {string} language The name of current language.
|
||
* @returns {string} The HTML representation of the token or token stream.
|
||
* @memberof Token
|
||
* @static
|
||
*/
|
||
Token.stringify = function stringify(o, language) {
|
||
if (typeof o == 'string') {
|
||
return o;
|
||
}
|
||
if (Array.isArray(o)) {
|
||
var s = '';
|
||
o.forEach(function (e) {
|
||
s += stringify(e, language);
|
||
});
|
||
return s;
|
||
}
|
||
|
||
var env = {
|
||
type: o.type,
|
||
content: stringify(o.content, language),
|
||
tag: 'span',
|
||
classes: ['token', o.type],
|
||
attributes: {},
|
||
language: language
|
||
};
|
||
|
||
var aliases = o.alias;
|
||
if (aliases) {
|
||
if (Array.isArray(aliases)) {
|
||
Array.prototype.push.apply(env.classes, aliases);
|
||
} else {
|
||
env.classes.push(aliases);
|
||
}
|
||
}
|
||
|
||
_.hooks.run('wrap', env);
|
||
|
||
var attributes = '';
|
||
for (var name in env.attributes) {
|
||
attributes += ' ' + name + '="' + (env.attributes[name] || '').replace(/"/g, '"') + '"';
|
||
}
|
||
|
||
return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + attributes + '>' + env.content + '</' + env.tag + '>';
|
||
};
|
||
|
||
/**
|
||
* @param {RegExp} pattern
|
||
* @param {number} pos
|
||
* @param {string} text
|
||
* @param {boolean} lookbehind
|
||
* @returns {RegExpExecArray | null}
|
||
*/
|
||
function matchPattern(pattern, pos, text, lookbehind) {
|
||
pattern.lastIndex = pos;
|
||
var match = pattern.exec(text);
|
||
if (match && lookbehind && match[1]) {
|
||
// change the match to remove the text matched by the Prism lookbehind group
|
||
var lookbehindLength = match[1].length;
|
||
match.index += lookbehindLength;
|
||
match[0] = match[0].slice(lookbehindLength);
|
||
}
|
||
return match;
|
||
}
|
||
|
||
/**
|
||
* @param {string} text
|
||
* @param {LinkedList<string | Token>} tokenList
|
||
* @param {any} grammar
|
||
* @param {LinkedListNode<string | Token>} startNode
|
||
* @param {number} startPos
|
||
* @param {RematchOptions} [rematch]
|
||
* @returns {void}
|
||
* @private
|
||
*
|
||
* @typedef RematchOptions
|
||
* @property {string} cause
|
||
* @property {number} reach
|
||
*/
|
||
function matchGrammar(text, tokenList, grammar, startNode, startPos, rematch) {
|
||
for (var token in grammar) {
|
||
if (!grammar.hasOwnProperty(token) || !grammar[token]) {
|
||
continue;
|
||
}
|
||
|
||
var patterns = grammar[token];
|
||
patterns = Array.isArray(patterns) ? patterns : [patterns];
|
||
|
||
for (var j = 0; j < patterns.length; ++j) {
|
||
if (rematch && rematch.cause == token + ',' + j) {
|
||
return;
|
||
}
|
||
|
||
var patternObj = patterns[j];
|
||
var inside = patternObj.inside;
|
||
var lookbehind = !!patternObj.lookbehind;
|
||
var greedy = !!patternObj.greedy;
|
||
var alias = patternObj.alias;
|
||
|
||
if (greedy && !patternObj.pattern.global) {
|
||
// Without the global flag, lastIndex won't work
|
||
var flags = patternObj.pattern.toString().match(/[imsuy]*$/)[0];
|
||
patternObj.pattern = RegExp(patternObj.pattern.source, flags + 'g');
|
||
}
|
||
|
||
/** @type {RegExp} */
|
||
var pattern = patternObj.pattern || patternObj;
|
||
|
||
for ( // iterate the token list and keep track of the current token/string position
|
||
var currentNode = startNode.next, pos = startPos;
|
||
currentNode !== tokenList.tail;
|
||
pos += currentNode.value.length, currentNode = currentNode.next
|
||
) {
|
||
|
||
if (rematch && pos >= rematch.reach) {
|
||
break;
|
||
}
|
||
|
||
var str = currentNode.value;
|
||
|
||
if (tokenList.length > text.length) {
|
||
// Something went terribly wrong, ABORT, ABORT!
|
||
return;
|
||
}
|
||
|
||
if (str instanceof Token) {
|
||
continue;
|
||
}
|
||
|
||
var removeCount = 1; // this is the to parameter of removeBetween
|
||
var match;
|
||
|
||
if (greedy) {
|
||
match = matchPattern(pattern, pos, text, lookbehind);
|
||
if (!match || match.index >= text.length) {
|
||
break;
|
||
}
|
||
|
||
var from = match.index;
|
||
var to = match.index + match[0].length;
|
||
var p = pos;
|
||
|
||
// find the node that contains the match
|
||
p += currentNode.value.length;
|
||
while (from >= p) {
|
||
currentNode = currentNode.next;
|
||
p += currentNode.value.length;
|
||
}
|
||
// adjust pos (and p)
|
||
p -= currentNode.value.length;
|
||
pos = p;
|
||
|
||
// the current node is a Token, then the match starts inside another Token, which is invalid
|
||
if (currentNode.value instanceof Token) {
|
||
continue;
|
||
}
|
||
|
||
// find the last node which is affected by this match
|
||
for (
|
||
var k = currentNode;
|
||
k !== tokenList.tail && (p < to || typeof k.value === 'string');
|
||
k = k.next
|
||
) {
|
||
removeCount++;
|
||
p += k.value.length;
|
||
}
|
||
removeCount--;
|
||
|
||
// replace with the new match
|
||
str = text.slice(pos, p);
|
||
match.index -= pos;
|
||
} else {
|
||
match = matchPattern(pattern, 0, str, lookbehind);
|
||
if (!match) {
|
||
continue;
|
||
}
|
||
}
|
||
|
||
// eslint-disable-next-line no-redeclare
|
||
var from = match.index;
|
||
var matchStr = match[0];
|
||
var before = str.slice(0, from);
|
||
var after = str.slice(from + matchStr.length);
|
||
|
||
var reach = pos + str.length;
|
||
if (rematch && reach > rematch.reach) {
|
||
rematch.reach = reach;
|
||
}
|
||
|
||
var removeFrom = currentNode.prev;
|
||
|
||
if (before) {
|
||
removeFrom = addAfter(tokenList, removeFrom, before);
|
||
pos += before.length;
|
||
}
|
||
|
||
removeRange(tokenList, removeFrom, removeCount);
|
||
|
||
var wrapped = new Token(token, inside ? _.tokenize(matchStr, inside) : matchStr, alias, matchStr);
|
||
currentNode = addAfter(tokenList, removeFrom, wrapped);
|
||
|
||
if (after) {
|
||
addAfter(tokenList, currentNode, after);
|
||
}
|
||
|
||
if (removeCount > 1) {
|
||
// at least one Token object was removed, so we have to do some rematching
|
||
// this can only happen if the current pattern is greedy
|
||
|
||
/** @type {RematchOptions} */
|
||
var nestedRematch = {
|
||
cause: token + ',' + j,
|
||
reach: reach
|
||
};
|
||
matchGrammar(text, tokenList, grammar, currentNode.prev, pos, nestedRematch);
|
||
|
||
// the reach might have been extended because of the rematching
|
||
if (rematch && nestedRematch.reach > rematch.reach) {
|
||
rematch.reach = nestedRematch.reach;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @typedef LinkedListNode
|
||
* @property {T} value
|
||
* @property {LinkedListNode<T> | null} prev The previous node.
|
||
* @property {LinkedListNode<T> | null} next The next node.
|
||
* @template T
|
||
* @private
|
||
*/
|
||
|
||
/**
|
||
* @template T
|
||
* @private
|
||
*/
|
||
function LinkedList() {
|
||
/** @type {LinkedListNode<T>} */
|
||
var head = { value: null, prev: null, next: null };
|
||
/** @type {LinkedListNode<T>} */
|
||
var tail = { value: null, prev: head, next: null };
|
||
head.next = tail;
|
||
|
||
/** @type {LinkedListNode<T>} */
|
||
this.head = head;
|
||
/** @type {LinkedListNode<T>} */
|
||
this.tail = tail;
|
||
this.length = 0;
|
||
}
|
||
|
||
/**
|
||
* Adds a new node with the given value to the list.
|
||
*
|
||
* @param {LinkedList<T>} list
|
||
* @param {LinkedListNode<T>} node
|
||
* @param {T} value
|
||
* @returns {LinkedListNode<T>} The added node.
|
||
* @template T
|
||
*/
|
||
function addAfter(list, node, value) {
|
||
// assumes that node != list.tail && values.length >= 0
|
||
var next = node.next;
|
||
|
||
var newNode = { value: value, prev: node, next: next };
|
||
node.next = newNode;
|
||
next.prev = newNode;
|
||
list.length++;
|
||
|
||
return newNode;
|
||
}
|
||
/**
|
||
* Removes `count` nodes after the given node. The given node will not be removed.
|
||
*
|
||
* @param {LinkedList<T>} list
|
||
* @param {LinkedListNode<T>} node
|
||
* @param {number} count
|
||
* @template T
|
||
*/
|
||
function removeRange(list, node, count) {
|
||
var next = node.next;
|
||
for (var i = 0; i < count && next !== list.tail; i++) {
|
||
next = next.next;
|
||
}
|
||
node.next = next;
|
||
next.prev = node;
|
||
list.length -= i;
|
||
}
|
||
/**
|
||
* @param {LinkedList<T>} list
|
||
* @returns {T[]}
|
||
* @template T
|
||
*/
|
||
function toArray(list) {
|
||
var array = [];
|
||
var node = list.head.next;
|
||
while (node !== list.tail) {
|
||
array.push(node.value);
|
||
node = node.next;
|
||
}
|
||
return array;
|
||
}
|
||
|
||
|
||
if (!_self.document) {
|
||
if (!_self.addEventListener) {
|
||
// in Node.js
|
||
return _;
|
||
}
|
||
|
||
if (!_.disableWorkerMessageHandler) {
|
||
// In worker
|
||
_self.addEventListener('message', function (evt) {
|
||
var message = JSON.parse(evt.data);
|
||
var lang = message.language;
|
||
var code = message.code;
|
||
var immediateClose = message.immediateClose;
|
||
|
||
_self.postMessage(_.highlight(code, _.languages[lang], lang));
|
||
if (immediateClose) {
|
||
_self.close();
|
||
}
|
||
}, false);
|
||
}
|
||
|
||
return _;
|
||
}
|
||
|
||
// Get current script and highlight
|
||
var script = _.util.currentScript();
|
||
|
||
if (script) {
|
||
_.filename = script.src;
|
||
|
||
if (script.hasAttribute('data-manual')) {
|
||
_.manual = true;
|
||
}
|
||
}
|
||
|
||
function highlightAutomaticallyCallback() {
|
||
if (!_.manual) {
|
||
_.highlightAll();
|
||
}
|
||
}
|
||
|
||
if (!_.manual) {
|
||
// If the document state is "loading", then we'll use DOMContentLoaded.
|
||
// If the document state is "interactive" and the prism.js script is deferred, then we'll also use the
|
||
// DOMContentLoaded event because there might be some plugins or languages which have also been deferred and they
|
||
// might take longer one animation frame to execute which can create a race condition where only some plugins have
|
||
// been loaded when Prism.highlightAll() is executed, depending on how fast resources are loaded.
|
||
// See https://github.com/PrismJS/prism/issues/2102
|
||
var readyState = document.readyState;
|
||
if (readyState === 'loading' || readyState === 'interactive' && script && script.defer) {
|
||
document.addEventListener('DOMContentLoaded', highlightAutomaticallyCallback);
|
||
} else {
|
||
if (window.requestAnimationFrame) {
|
||
window.requestAnimationFrame(highlightAutomaticallyCallback);
|
||
} else {
|
||
window.setTimeout(highlightAutomaticallyCallback, 16);
|
||
}
|
||
}
|
||
}
|
||
|
||
return _;
|
||
|
||
}(_self));
|
||
|
||
if (typeof module !== 'undefined' && module.exports) {
|
||
module.exports = Prism;
|
||
}
|
||
|
||
// hack for components to work correctly in node.js
|
||
if (typeof global !== 'undefined') {
|
||
global.Prism = Prism;
|
||
}
|
||
|
||
// some additional documentation/types
|
||
|
||
/**
|
||
* The expansion of a simple `RegExp` literal to support additional properties.
|
||
*
|
||
* @typedef GrammarToken
|
||
* @property {RegExp} pattern The regular expression of the token.
|
||
* @property {boolean} [lookbehind=false] If `true`, then the first capturing group of `pattern` will (effectively)
|
||
* behave as a lookbehind group meaning that the captured text will not be part of the matched text of the new token.
|
||
* @property {boolean} [greedy=false] Whether the token is greedy.
|
||
* @property {string|string[]} [alias] An optional alias or list of aliases.
|
||
* @property {Grammar} [inside] The nested grammar of this token.
|
||
*
|
||
* The `inside` grammar will be used to tokenize the text value of each token of this kind.
|
||
*
|
||
* This can be used to make nested and even recursive language definitions.
|
||
*
|
||
* Note: This can cause infinite recursion. Be careful when you embed different languages or even the same language into
|
||
* each another.
|
||
* @global
|
||
* @public
|
||
*/
|
||
|
||
/**
|
||
* @typedef Grammar
|
||
* @type {Object<string, RegExp | GrammarToken | Array<RegExp | GrammarToken>>}
|
||
* @property {Grammar} [rest] An optional grammar object that will be appended to this grammar.
|
||
* @global
|
||
* @public
|
||
*/
|
||
|
||
/**
|
||
* A function which will invoked after an element was successfully highlighted.
|
||
*
|
||
* @callback HighlightCallback
|
||
* @param {Element} element The element successfully highlighted.
|
||
* @returns {void}
|
||
* @global
|
||
* @public
|
||
*/
|
||
|
||
/**
|
||
* @callback HookCallback
|
||
* @param {Object<string, any>} env The environment variables of the hook.
|
||
* @returns {void}
|
||
* @global
|
||
* @public
|
||
*/
|
||
|
||
|
||
/* **********************************************
|
||
Begin prism-markup.js
|
||
********************************************** */
|
||
|
||
Prism.languages.markup = {
|
||
'comment': {
|
||
pattern: /<!--(?:(?!<!--)[\s\S])*?-->/,
|
||
greedy: true
|
||
},
|
||
'prolog': {
|
||
pattern: /<\?[\s\S]+?\?>/,
|
||
greedy: true
|
||
},
|
||
'doctype': {
|
||
// https://www.w3.org/TR/xml/#NT-doctypedecl
|
||
pattern: /<!DOCTYPE(?:[^>"'[\]]|"[^"]*"|'[^']*')+(?:\[(?:[^<"'\]]|"[^"]*"|'[^']*'|<(?!!--)|<!--(?:[^-]|-(?!->))*-->)*\]\s*)?>/i,
|
||
greedy: true,
|
||
inside: {
|
||
'internal-subset': {
|
||
pattern: /(^[^\[]*\[)[\s\S]+(?=\]>$)/,
|
||
lookbehind: true,
|
||
greedy: true,
|
||
inside: null // see below
|
||
},
|
||
'string': {
|
||
pattern: /"[^"]*"|'[^']*'/,
|
||
greedy: true
|
||
},
|
||
'punctuation': /^<!|>$|[[\]]/,
|
||
'doctype-tag': /^DOCTYPE/i,
|
||
'name': /[^\s<>'"]+/
|
||
}
|
||
},
|
||
'cdata': {
|
||
pattern: /<!\[CDATA\[[\s\S]*?\]\]>/i,
|
||
greedy: true
|
||
},
|
||
'tag': {
|
||
pattern: /<\/?(?!\d)[^\s>\/=$<%]+(?:\s(?:\s*[^\s>\/=]+(?:\s*=\s*(?:"[^"]*"|'[^']*'|[^\s'">=]+(?=[\s>]))|(?=[\s/>])))+)?\s*\/?>/,
|
||
greedy: true,
|
||
inside: {
|
||
'tag': {
|
||
pattern: /^<\/?[^\s>\/]+/,
|
||
inside: {
|
||
'punctuation': /^<\/?/,
|
||
'namespace': /^[^\s>\/:]+:/
|
||
}
|
||
},
|
||
'special-attr': [],
|
||
'attr-value': {
|
||
pattern: /=\s*(?:"[^"]*"|'[^']*'|[^\s'">=]+)/,
|
||
inside: {
|
||
'punctuation': [
|
||
{
|
||
pattern: /^=/,
|
||
alias: 'attr-equals'
|
||
},
|
||
{
|
||
pattern: /^(\s*)["']|["']$/,
|
||
lookbehind: true
|
||
}
|
||
]
|
||
}
|
||
},
|
||
'punctuation': /\/?>/,
|
||
'attr-name': {
|
||
pattern: /[^\s>\/]+/,
|
||
inside: {
|
||
'namespace': /^[^\s>\/:]+:/
|
||
}
|
||
}
|
||
|
||
}
|
||
},
|
||
'entity': [
|
||
{
|
||
pattern: /&[\da-z]{1,8};/i,
|
||
alias: 'named-entity'
|
||
},
|
||
/&#x?[\da-f]{1,8};/i
|
||
]
|
||
};
|
||
|
||
Prism.languages.markup['tag'].inside['attr-value'].inside['entity'] =
|
||
Prism.languages.markup['entity'];
|
||
Prism.languages.markup['doctype'].inside['internal-subset'].inside = Prism.languages.markup;
|
||
|
||
// Plugin to make entity title show the real entity, idea by Roman Komarov
|
||
Prism.hooks.add('wrap', function (env) {
|
||
|
||
if (env.type === 'entity') {
|
||
env.attributes['title'] = env.content.replace(/&/, '&');
|
||
}
|
||
});
|
||
|
||
Object.defineProperty(Prism.languages.markup.tag, 'addInlined', {
|
||
/**
|
||
* Adds an inlined language to markup.
|
||
*
|
||
* An example of an inlined language is CSS with `<style>` tags.
|
||
*
|
||
* @param {string} tagName The name of the tag that contains the inlined language. This name will be treated as
|
||
* case insensitive.
|
||
* @param {string} lang The language key.
|
||
* @example
|
||
* addInlined('style', 'css');
|
||
*/
|
||
value: function addInlined(tagName, lang) {
|
||
var includedCdataInside = {};
|
||
includedCdataInside['language-' + lang] = {
|
||
pattern: /(^<!\[CDATA\[)[\s\S]+?(?=\]\]>$)/i,
|
||
lookbehind: true,
|
||
inside: Prism.languages[lang]
|
||
};
|
||
includedCdataInside['cdata'] = /^<!\[CDATA\[|\]\]>$/i;
|
||
|
||
var inside = {
|
||
'included-cdata': {
|
||
pattern: /<!\[CDATA\[[\s\S]*?\]\]>/i,
|
||
inside: includedCdataInside
|
||
}
|
||
};
|
||
inside['language-' + lang] = {
|
||
pattern: /[\s\S]+/,
|
||
inside: Prism.languages[lang]
|
||
};
|
||
|
||
var def = {};
|
||
def[tagName] = {
|
||
pattern: RegExp(/(<__[^>]*>)(?:<!\[CDATA\[(?:[^\]]|\](?!\]>))*\]\]>|(?!<!\[CDATA\[)[\s\S])*?(?=<\/__>)/.source.replace(/__/g, function () { return tagName; }), 'i'),
|
||
lookbehind: true,
|
||
greedy: true,
|
||
inside: inside
|
||
};
|
||
|
||
Prism.languages.insertBefore('markup', 'cdata', def);
|
||
}
|
||
});
|
||
Object.defineProperty(Prism.languages.markup.tag, 'addAttribute', {
|
||
/**
|
||
* Adds an pattern to highlight languages embedded in HTML attributes.
|
||
*
|
||
* An example of an inlined language is CSS with `style` attributes.
|
||
*
|
||
* @param {string} attrName The name of the tag that contains the inlined language. This name will be treated as
|
||
* case insensitive.
|
||
* @param {string} lang The language key.
|
||
* @example
|
||
* addAttribute('style', 'css');
|
||
*/
|
||
value: function (attrName, lang) {
|
||
Prism.languages.markup.tag.inside['special-attr'].push({
|
||
pattern: RegExp(
|
||
/(^|["'\s])/.source + '(?:' + attrName + ')' + /\s*=\s*(?:"[^"]*"|'[^']*'|[^\s'">=]+(?=[\s>]))/.source,
|
||
'i'
|
||
),
|
||
lookbehind: true,
|
||
inside: {
|
||
'attr-name': /^[^\s=]+/,
|
||
'attr-value': {
|
||
pattern: /=[\s\S]+/,
|
||
inside: {
|
||
'value': {
|
||
pattern: /(^=\s*(["']|(?!["'])))\S[\s\S]*(?=\2$)/,
|
||
lookbehind: true,
|
||
alias: [lang, 'language-' + lang],
|
||
inside: Prism.languages[lang]
|
||
},
|
||
'punctuation': [
|
||
{
|
||
pattern: /^=/,
|
||
alias: 'attr-equals'
|
||
},
|
||
/"|'/
|
||
]
|
||
}
|
||
}
|
||
}
|
||
});
|
||
}
|
||
});
|
||
|
||
Prism.languages.html = Prism.languages.markup;
|
||
Prism.languages.mathml = Prism.languages.markup;
|
||
Prism.languages.svg = Prism.languages.markup;
|
||
|
||
Prism.languages.xml = Prism.languages.extend('markup', {});
|
||
Prism.languages.ssml = Prism.languages.xml;
|
||
Prism.languages.atom = Prism.languages.xml;
|
||
Prism.languages.rss = Prism.languages.xml;
|
||
|
||
|
||
/* **********************************************
|
||
Begin prism-css.js
|
||
********************************************** */
|
||
|
||
(function (Prism) {
|
||
|
||
var string = /(?:"(?:\\(?:\r\n|[\s\S])|[^"\\\r\n])*"|'(?:\\(?:\r\n|[\s\S])|[^'\\\r\n])*')/;
|
||
|
||
Prism.languages.css = {
|
||
'comment': /\/\*[\s\S]*?\*\//,
|
||
'atrule': {
|
||
pattern: RegExp('@[\\w-](?:' + /[^;{\s"']|\s+(?!\s)/.source + '|' + string.source + ')*?' + /(?:;|(?=\s*\{))/.source),
|
||
inside: {
|
||
'rule': /^@[\w-]+/,
|
||
'selector-function-argument': {
|
||
pattern: /(\bselector\s*\(\s*(?![\s)]))(?:[^()\s]|\s+(?![\s)])|\((?:[^()]|\([^()]*\))*\))+(?=\s*\))/,
|
||
lookbehind: true,
|
||
alias: 'selector'
|
||
},
|
||
'keyword': {
|
||
pattern: /(^|[^\w-])(?:and|not|only|or)(?![\w-])/,
|
||
lookbehind: true
|
||
}
|
||
// See rest below
|
||
}
|
||
},
|
||
'url': {
|
||
// https://drafts.csswg.org/css-values-3/#urls
|
||
pattern: RegExp('\\burl\\((?:' + string.source + '|' + /(?:[^\\\r\n()"']|\\[\s\S])*/.source + ')\\)', 'i'),
|
||
greedy: true,
|
||
inside: {
|
||
'function': /^url/i,
|
||
'punctuation': /^\(|\)$/,
|
||
'string': {
|
||
pattern: RegExp('^' + string.source + '$'),
|
||
alias: 'url'
|
||
}
|
||
}
|
||
},
|
||
'selector': {
|
||
pattern: RegExp('(^|[{}\\s])[^{}\\s](?:[^{};"\'\\s]|\\s+(?![\\s{])|' + string.source + ')*(?=\\s*\\{)'),
|
||
lookbehind: true
|
||
},
|
||
'string': {
|
||
pattern: string,
|
||
greedy: true
|
||
},
|
||
'property': {
|
||
pattern: /(^|[^-\w\xA0-\uFFFF])(?!\s)[-_a-z\xA0-\uFFFF](?:(?!\s)[-\w\xA0-\uFFFF])*(?=\s*:)/i,
|
||
lookbehind: true
|
||
},
|
||
'important': /!important\b/i,
|
||
'function': {
|
||
pattern: /(^|[^-a-z0-9])[-a-z0-9]+(?=\()/i,
|
||
lookbehind: true
|
||
},
|
||
'punctuation': /[(){};:,]/
|
||
};
|
||
|
||
Prism.languages.css['atrule'].inside.rest = Prism.languages.css;
|
||
|
||
var markup = Prism.languages.markup;
|
||
if (markup) {
|
||
markup.tag.addInlined('style', 'css');
|
||
markup.tag.addAttribute('style', 'css');
|
||
}
|
||
|
||
}(Prism));
|
||
|
||
|
||
/* **********************************************
|
||
Begin prism-clike.js
|
||
********************************************** */
|
||
|
||
Prism.languages.clike = {
|
||
'comment': [
|
||
{
|
||
pattern: /(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,
|
||
lookbehind: true,
|
||
greedy: true
|
||
},
|
||
{
|
||
pattern: /(^|[^\\:])\/\/.*/,
|
||
lookbehind: true,
|
||
greedy: true
|
||
}
|
||
],
|
||
'string': {
|
||
pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
|
||
greedy: true
|
||
},
|
||
'class-name': {
|
||
pattern: /(\b(?:class|extends|implements|instanceof|interface|new|trait)\s+|\bcatch\s+\()[\w.\\]+/i,
|
||
lookbehind: true,
|
||
inside: {
|
||
'punctuation': /[.\\]/
|
||
}
|
||
},
|
||
'keyword': /\b(?:break|catch|continue|do|else|finally|for|function|if|in|instanceof|new|null|return|throw|try|while)\b/,
|
||
'boolean': /\b(?:false|true)\b/,
|
||
'function': /\b\w+(?=\()/,
|
||
'number': /\b0x[\da-f]+\b|(?:\b\d+(?:\.\d*)?|\B\.\d+)(?:e[+-]?\d+)?/i,
|
||
'operator': /[<>]=?|[!=]=?=?|--?|\+\+?|&&?|\|\|?|[?*/~^%]/,
|
||
'punctuation': /[{}[\];(),.:]/
|
||
};
|
||
|
||
|
||
/* **********************************************
|
||
Begin prism-javascript.js
|
||
********************************************** */
|
||
|
||
Prism.languages.javascript = Prism.languages.extend('clike', {
|
||
'class-name': [
|
||
Prism.languages.clike['class-name'],
|
||
{
|
||
pattern: /(^|[^$\w\xA0-\uFFFF])(?!\s)[_$A-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\.(?:constructor|prototype))/,
|
||
lookbehind: true
|
||
}
|
||
],
|
||
'keyword': [
|
||
{
|
||
pattern: /((?:^|\})\s*)catch\b/,
|
||
lookbehind: true
|
||
},
|
||
{
|
||
pattern: /(^|[^.]|\.\.\.\s*)\b(?:as|assert(?=\s*\{)|async(?=\s*(?:function\b|\(|[$\w\xA0-\uFFFF]|$))|await|break|case|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally(?=\s*(?:\{|$))|for|from(?=\s*(?:['"]|$))|function|(?:get|set)(?=\s*(?:[#\[$\w\xA0-\uFFFF]|$))|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)\b/,
|
||
lookbehind: true
|
||
},
|
||
],
|
||
// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
|
||
'function': /#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*(?:\.\s*(?:apply|bind|call)\s*)?\()/,
|
||
'number': {
|
||
pattern: RegExp(
|
||
/(^|[^\w$])/.source +
|
||
'(?:' +
|
||
(
|
||
// constant
|
||
/NaN|Infinity/.source +
|
||
'|' +
|
||
// binary integer
|
||
/0[bB][01]+(?:_[01]+)*n?/.source +
|
||
'|' +
|
||
// octal integer
|
||
/0[oO][0-7]+(?:_[0-7]+)*n?/.source +
|
||
'|' +
|
||
// hexadecimal integer
|
||
/0[xX][\dA-Fa-f]+(?:_[\dA-Fa-f]+)*n?/.source +
|
||
'|' +
|
||
// decimal bigint
|
||
/\d+(?:_\d+)*n/.source +
|
||
'|' +
|
||
// decimal number (integer or float) but no bigint
|
||
/(?:\d+(?:_\d+)*(?:\.(?:\d+(?:_\d+)*)?)?|\.\d+(?:_\d+)*)(?:[Ee][+-]?\d+(?:_\d+)*)?/.source
|
||
) +
|
||
')' +
|
||
/(?![\w$])/.source
|
||
),
|
||
lookbehind: true
|
||
},
|
||
'operator': /--|\+\+|\*\*=?|=>|&&=?|\|\|=?|[!=]==|<<=?|>>>?=?|[-+*/%&|^!=<>]=?|\.{3}|\?\?=?|\?\.?|[~:]/
|
||
});
|
||
|
||
Prism.languages.javascript['class-name'][0].pattern = /(\b(?:class|extends|implements|instanceof|interface|new)\s+)[\w.\\]+/;
|
||
|
||
Prism.languages.insertBefore('javascript', 'keyword', {
|
||
'regex': {
|
||
pattern: RegExp(
|
||
// lookbehind
|
||
// eslint-disable-next-line regexp/no-dupe-characters-character-class
|
||
/((?:^|[^$\w\xA0-\uFFFF."'\])\s]|\b(?:return|yield))\s*)/.source +
|
||
// Regex pattern:
|
||
// There are 2 regex patterns here. The RegExp set notation proposal added support for nested character
|
||
// classes if the `v` flag is present. Unfortunately, nested CCs are both context-free and incompatible
|
||
// with the only syntax, so we have to define 2 different regex patterns.
|
||
/\//.source +
|
||
'(?:' +
|
||
/(?:\[(?:[^\]\\\r\n]|\\.)*\]|\\.|[^/\\\[\r\n])+\/[dgimyus]{0,7}/.source +
|
||
'|' +
|
||
// `v` flag syntax. This supports 3 levels of nested character classes.
|
||
/(?:\[(?:[^[\]\\\r\n]|\\.|\[(?:[^[\]\\\r\n]|\\.|\[(?:[^[\]\\\r\n]|\\.)*\])*\])*\]|\\.|[^/\\\[\r\n])+\/[dgimyus]{0,7}v[dgimyus]{0,7}/.source +
|
||
')' +
|
||
// lookahead
|
||
/(?=(?:\s|\/\*(?:[^*]|\*(?!\/))*\*\/)*(?:$|[\r\n,.;:})\]]|\/\/))/.source
|
||
),
|
||
lookbehind: true,
|
||
greedy: true,
|
||
inside: {
|
||
'regex-source': {
|
||
pattern: /^(\/)[\s\S]+(?=\/[a-z]*$)/,
|
||
lookbehind: true,
|
||
alias: 'language-regex',
|
||
inside: Prism.languages.regex
|
||
},
|
||
'regex-delimiter': /^\/|\/$/,
|
||
'regex-flags': /^[a-z]+$/,
|
||
}
|
||
},
|
||
// This must be declared before keyword because we use "function" inside the look-forward
|
||
'function-variable': {
|
||
pattern: /#?(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*[=:]\s*(?:async\s*)?(?:\bfunction\b|(?:\((?:[^()]|\([^()]*\))*\)|(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/,
|
||
alias: 'function'
|
||
},
|
||
'parameter': [
|
||
{
|
||
pattern: /(function(?:\s+(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)?\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\))/,
|
||
lookbehind: true,
|
||
inside: Prism.languages.javascript
|
||
},
|
||
{
|
||
pattern: /(^|[^$\w\xA0-\uFFFF])(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=>)/i,
|
||
lookbehind: true,
|
||
inside: Prism.languages.javascript
|
||
},
|
||
{
|
||
pattern: /(\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*=>)/,
|
||
lookbehind: true,
|
||
inside: Prism.languages.javascript
|
||
},
|
||
{
|
||
pattern: /((?:\b|\s|^)(?!(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|undefined|var|void|while|with|yield)(?![$\w\xA0-\uFFFF]))(?:(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*\s*)\(\s*|\]\s*\(\s*)(?!\s)(?:[^()\s]|\s+(?![\s)])|\([^()]*\))+(?=\s*\)\s*\{)/,
|
||
lookbehind: true,
|
||
inside: Prism.languages.javascript
|
||
}
|
||
],
|
||
'constant': /\b[A-Z](?:[A-Z_]|\dx?)*\b/
|
||
});
|
||
|
||
Prism.languages.insertBefore('javascript', 'string', {
|
||
'hashbang': {
|
||
pattern: /^#!.*/,
|
||
greedy: true,
|
||
alias: 'comment'
|
||
},
|
||
'template-string': {
|
||
pattern: /`(?:\\[\s\S]|\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}|(?!\$\{)[^\\`])*`/,
|
||
greedy: true,
|
||
inside: {
|
||
'template-punctuation': {
|
||
pattern: /^`|`$/,
|
||
alias: 'string'
|
||
},
|
||
'interpolation': {
|
||
pattern: /((?:^|[^\\])(?:\\{2})*)\$\{(?:[^{}]|\{(?:[^{}]|\{[^}]*\})*\})+\}/,
|
||
lookbehind: true,
|
||
inside: {
|
||
'interpolation-punctuation': {
|
||
pattern: /^\$\{|\}$/,
|
||
alias: 'punctuation'
|
||
},
|
||
rest: Prism.languages.javascript
|
||
}
|
||
},
|
||
'string': /[\s\S]+/
|
||
}
|
||
},
|
||
'string-property': {
|
||
pattern: /((?:^|[,{])[ \t]*)(["'])(?:\\(?:\r\n|[\s\S])|(?!\2)[^\\\r\n])*\2(?=\s*:)/m,
|
||
lookbehind: true,
|
||
greedy: true,
|
||
alias: 'property'
|
||
}
|
||
});
|
||
|
||
Prism.languages.insertBefore('javascript', 'operator', {
|
||
'literal-property': {
|
||
pattern: /((?:^|[,{])[ \t]*)(?!\s)[_$a-zA-Z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*:)/m,
|
||
lookbehind: true,
|
||
alias: 'property'
|
||
},
|
||
});
|
||
|
||
if (Prism.languages.markup) {
|
||
Prism.languages.markup.tag.addInlined('script', 'javascript');
|
||
|
||
// add attribute support for all DOM events.
|
||
// https://developer.mozilla.org/en-US/docs/Web/Events#Standard_events
|
||
Prism.languages.markup.tag.addAttribute(
|
||
/on(?:abort|blur|change|click|composition(?:end|start|update)|dblclick|error|focus(?:in|out)?|key(?:down|up)|load|mouse(?:down|enter|leave|move|out|over|up)|reset|resize|scroll|select|slotchange|submit|unload|wheel)/.source,
|
||
'javascript'
|
||
);
|
||
}
|
||
|
||
Prism.languages.js = Prism.languages.javascript;
|
||
|
||
|
||
/* **********************************************
|
||
Begin prism-file-highlight.js
|
||
********************************************** */
|
||
|
||
(function () {
|
||
|
||
if (typeof Prism === 'undefined' || typeof document === 'undefined') {
|
||
return;
|
||
}
|
||
|
||
// https://developer.mozilla.org/en-US/docs/Web/API/Element/matches#Polyfill
|
||
if (!Element.prototype.matches) {
|
||
Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
|
||
}
|
||
|
||
var LOADING_MESSAGE = 'Loading…';
|
||
var FAILURE_MESSAGE = function (status, message) {
|
||
return '✖ Error ' + status + ' while fetching file: ' + message;
|
||
};
|
||
var FAILURE_EMPTY_MESSAGE = '✖ Error: File does not exist or is empty';
|
||
|
||
var EXTENSIONS = {
|
||
'js': 'javascript',
|
||
'py': 'python',
|
||
'rb': 'ruby',
|
||
'ps1': 'powershell',
|
||
'psm1': 'powershell',
|
||
'sh': 'bash',
|
||
'bat': 'batch',
|
||
'h': 'c',
|
||
'tex': 'latex'
|
||
};
|
||
|
||
var STATUS_ATTR = 'data-src-status';
|
||
var STATUS_LOADING = 'loading';
|
||
var STATUS_LOADED = 'loaded';
|
||
var STATUS_FAILED = 'failed';
|
||
|
||
var SELECTOR = 'pre[data-src]:not([' + STATUS_ATTR + '="' + STATUS_LOADED + '"])'
|
||
+ ':not([' + STATUS_ATTR + '="' + STATUS_LOADING + '"])';
|
||
|
||
/**
|
||
* Loads the given file.
|
||
*
|
||
* @param {string} src The URL or path of the source file to load.
|
||
* @param {(result: string) => void} success
|
||
* @param {(reason: string) => void} error
|
||
*/
|
||
function loadFile(src, success, error) {
|
||
var xhr = new XMLHttpRequest();
|
||
xhr.open('GET', src, true);
|
||
xhr.onreadystatechange = function () {
|
||
if (xhr.readyState == 4) {
|
||
if (xhr.status < 400 && xhr.responseText) {
|
||
success(xhr.responseText);
|
||
} else {
|
||
if (xhr.status >= 400) {
|
||
error(FAILURE_MESSAGE(xhr.status, xhr.statusText));
|
||
} else {
|
||
error(FAILURE_EMPTY_MESSAGE);
|
||
}
|
||
}
|
||
}
|
||
};
|
||
xhr.send(null);
|
||
}
|
||
|
||
/**
|
||
* Parses the given range.
|
||
*
|
||
* This returns a range with inclusive ends.
|
||
*
|
||
* @param {string | null | undefined} range
|
||
* @returns {[number, number | undefined] | undefined}
|
||
*/
|
||
function parseRange(range) {
|
||
var m = /^\s*(\d+)\s*(?:(,)\s*(?:(\d+)\s*)?)?$/.exec(range || '');
|
||
if (m) {
|
||
var start = Number(m[1]);
|
||
var comma = m[2];
|
||
var end = m[3];
|
||
|
||
if (!comma) {
|
||
return [start, start];
|
||
}
|
||
if (!end) {
|
||
return [start, undefined];
|
||
}
|
||
return [start, Number(end)];
|
||
}
|
||
return undefined;
|
||
}
|
||
|
||
Prism.hooks.add('before-highlightall', function (env) {
|
||
env.selector += ', ' + SELECTOR;
|
||
});
|
||
|
||
Prism.hooks.add('before-sanity-check', function (env) {
|
||
var pre = /** @type {HTMLPreElement} */ (env.element);
|
||
if (pre.matches(SELECTOR)) {
|
||
env.code = ''; // fast-path the whole thing and go to complete
|
||
|
||
pre.setAttribute(STATUS_ATTR, STATUS_LOADING); // mark as loading
|
||
|
||
// add code element with loading message
|
||
var code = pre.appendChild(document.createElement('CODE'));
|
||
code.textContent = LOADING_MESSAGE;
|
||
|
||
var src = pre.getAttribute('data-src');
|
||
|
||
var language = env.language;
|
||
if (language === 'none') {
|
||
// the language might be 'none' because there is no language set;
|
||
// in this case, we want to use the extension as the language
|
||
var extension = (/\.(\w+)$/.exec(src) || [, 'none'])[1];
|
||
language = EXTENSIONS[extension] || extension;
|
||
}
|
||
|
||
// set language classes
|
||
Prism.util.setLanguage(code, language);
|
||
Prism.util.setLanguage(pre, language);
|
||
|
||
// preload the language
|
||
var autoloader = Prism.plugins.autoloader;
|
||
if (autoloader) {
|
||
autoloader.loadLanguages(language);
|
||
}
|
||
|
||
// load file
|
||
loadFile(
|
||
src,
|
||
function (text) {
|
||
// mark as loaded
|
||
pre.setAttribute(STATUS_ATTR, STATUS_LOADED);
|
||
|
||
// handle data-range
|
||
var range = parseRange(pre.getAttribute('data-range'));
|
||
if (range) {
|
||
var lines = text.split(/\r\n?|\n/g);
|
||
|
||
// the range is one-based and inclusive on both ends
|
||
var start = range[0];
|
||
var end = range[1] == null ? lines.length : range[1];
|
||
|
||
if (start < 0) { start += lines.length; }
|
||
start = Math.max(0, Math.min(start - 1, lines.length));
|
||
if (end < 0) { end += lines.length; }
|
||
end = Math.max(0, Math.min(end, lines.length));
|
||
|
||
text = lines.slice(start, end).join('\n');
|
||
|
||
// add data-start for line numbers
|
||
if (!pre.hasAttribute('data-start')) {
|
||
pre.setAttribute('data-start', String(start + 1));
|
||
}
|
||
}
|
||
|
||
// highlight code
|
||
code.textContent = text;
|
||
Prism.highlightElement(code);
|
||
},
|
||
function (error) {
|
||
// mark as failed
|
||
pre.setAttribute(STATUS_ATTR, STATUS_FAILED);
|
||
|
||
code.textContent = error;
|
||
}
|
||
);
|
||
}
|
||
});
|
||
|
||
Prism.plugins.fileHighlight = {
|
||
/**
|
||
* Executes the File Highlight plugin for all matching `pre` elements under the given container.
|
||
*
|
||
* Note: Elements which are already loaded or currently loading will not be touched by this method.
|
||
*
|
||
* @param {ParentNode} [container=document]
|
||
*/
|
||
highlight: function highlight(container) {
|
||
var elements = (container || document).querySelectorAll(SELECTOR);
|
||
|
||
for (var i = 0, element; (element = elements[i++]);) {
|
||
Prism.highlightElement(element);
|
||
}
|
||
}
|
||
};
|
||
|
||
var logged = false;
|
||
/** @deprecated Use `Prism.plugins.fileHighlight.highlight` instead. */
|
||
Prism.fileHighlight = function () {
|
||
if (!logged) {
|
||
console.warn('Prism.fileHighlight is deprecated. Use `Prism.plugins.fileHighlight.highlight` instead.');
|
||
logged = true;
|
||
}
|
||
Prism.plugins.fileHighlight.highlight.apply(this, arguments);
|
||
};
|
||
|
||
}());
|