diff --git a/highlightjs/DIGESTS.md b/highlightjs/DIGESTS.md new file mode 100644 index 0000000..8f40fae --- /dev/null +++ b/highlightjs/DIGESTS.md @@ -0,0 +1,145 @@ +## Subresource Integrity + +If you are loading Highlight.js via CDN you may wish to use [Subresource Integrity](https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity) to guarantee that you are using a legimitate build of the library. + +To do this you simply need to add the `integrity` attribute for each JavaScript file you download via CDN. These digests are used by the browser to confirm the files downloaded have not been modified. + +```html + + + +``` + +The full list of digests for every file can be found below. + +### Digests + +``` +sha384-uBlc/xEFeDxZmBU7K/YWwi3ryXQrLQCAY2K1Dl3OD2DaAQBZZTt6Ew3aeDP20ix0 /es/languages/bash.js +sha384-4qer4rJCVxZjkwD4YaJfOnT2NOOt0qdjKYJM2076C+djiJ4lgrP1LVsB/MCpJSET /es/languages/bash.min.js +sha384-0OZaeLK1yb5eP3nW4y0JP1fVharSrsuv/1mkI/6/8aRFm9laYIWIMXjCOqu+vRW5 /es/languages/c.js +sha384-G7WtwjMBNGrPly3ZsbPhfnT0v88hG3Ea9fQhrSWfzj7cNAsXsU7EKMQLyLGj7vTH /es/languages/c.min.js +sha384-Wjwd1YEG/PYlkLHTWIx+RlPK6XboMN3bEpveERJ8D8Z4RaNE02Ho19ZFrSRPGi0j /es/languages/cpp.js +sha384-Q4zTNH8WsDVdSZbiZtzWS1HmAUcvMSdTmth9Uqgfjmx7Qzw6B8E3lC9ieUbE/9u4 /es/languages/cpp.min.js +sha384-Sp8E1Lb9fNhbvqBiogM60TCgpAIwYBi8WbHhIHcXO0bR5Z+9LeYwpDa1gkjzU99W /es/languages/csharp.js +sha384-huUb4Ol37G1WrtGV7bn1UArXcJSjD4tQswMGzgpNZYAPxR74MHTqW79z1dXWMvhk /es/languages/csharp.min.js 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+sha384-+PuZYFfVX2UQZU2yKt/FsJUZNUPzZWxW7auXltsaecr1xLvzBYF3c5gYoyOs1++x /languages/xml.js +sha384-jgkY4GMNWfQcLLIoP1vg3FWXflDrRhcSXGBW6ONIWC2SOIv5H1Pa57sXs+aomCuZ /languages/xml.min.js +sha384-Q9QPwIJmPxyNRncmooes/z2g8/fCDl38bmELGoeinrbzYZIzlE26l1CfuW5YIOcb /highlight.js +sha384-8QpO5LU0r6BZSgzHqq8yhSjOOnJvDvwjsiHYppXyxl2i8MNDgbuAFKLOsRFk8evZ /highlight.min.js +``` + diff --git a/highlightjs/LICENSE b/highlightjs/LICENSE new file mode 100644 index 0000000..2250cc7 --- /dev/null +++ b/highlightjs/LICENSE @@ -0,0 +1,29 @@ +BSD 3-Clause License + +Copyright (c) 2006, Ivan Sagalaev. +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, this + list of conditions and the following disclaimer. + +* Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + +* Neither the name of the copyright holder nor the names of its + contributors may be used to endorse or promote products derived from + this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/highlightjs/README.md b/highlightjs/README.md new file mode 100644 index 0000000..30d84b9 --- /dev/null +++ b/highlightjs/README.md @@ -0,0 +1,45 @@ +# Highlight.js CDN Assets + +[![install size](https://packagephobia.now.sh/badge?p=highlight.js)](https://packagephobia.now.sh/result?p=highlight.js) + +**This package contains only the CDN build assets of highlight.js.** + +This may be what you want if you'd like to install the pre-built distributable highlight.js client-side assets via NPM. If you're wanting to use highlight.js mainly on the server-side you likely want the [highlight.js][1] package instead. + +To access these files via CDN:
+https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@latest/build/ + +**If you just want a single .js file with the common languages built-in: +** + +--- + +## Highlight.js + +Highlight.js is a syntax highlighter written in JavaScript. It works in +the browser as well as on the server. It works with pretty much any +markup, doesn’t depend on any framework, and has automatic language +detection. + +If you'd like to read the full README:
+ + +## License + +Highlight.js is released under the BSD License. See [LICENSE][7] file +for details. + +## Links + +The official site for the library is at . + +The Github project may be found at: + +Further in-depth documentation for the API and other topics is at +. + +A list of the Core Team and contributors can be found in the [CONTRIBUTORS.md][8] file. + +[1]: https://www.npmjs.com/package/highlight.js +[7]: https://github.com/highlightjs/highlight.js/blob/main/LICENSE +[8]: https://github.com/highlightjs/highlight.js/blob/main/CONTRIBUTORS.md diff --git a/highlightjs/es/core.js b/highlightjs/es/core.js new file mode 100644 index 0000000..7294b81 --- /dev/null +++ b/highlightjs/es/core.js @@ -0,0 +1,2600 @@ +/*! + Highlight.js v11.9.0 (git: b7ec4bfafc) + (c) 2006-2023 undefined and other contributors + License: BSD-3-Clause + */ +/* eslint-disable no-multi-assign */ + +function deepFreeze(obj) { + if (obj instanceof Map) { + obj.clear = + obj.delete = + obj.set = + function () { + throw new Error('map is read-only'); + }; + } else if (obj instanceof Set) { + obj.add = + obj.clear = + obj.delete = + function () { + throw new Error('set is read-only'); + }; + } + + // Freeze self + Object.freeze(obj); + + Object.getOwnPropertyNames(obj).forEach((name) => { + const prop = obj[name]; + const type = typeof prop; + + // Freeze prop if it is an object or function and also not already frozen + if ((type === 'object' || type === 'function') && !Object.isFrozen(prop)) { + deepFreeze(prop); + } + }); + + return obj; +} + +/** @typedef {import('highlight.js').CallbackResponse} CallbackResponse */ +/** @typedef {import('highlight.js').CompiledMode} CompiledMode */ +/** @implements CallbackResponse */ + +class Response { + /** + * @param {CompiledMode} mode + */ + constructor(mode) { + // eslint-disable-next-line no-undefined + if (mode.data === undefined) mode.data = {}; + + this.data = mode.data; + this.isMatchIgnored = false; + } + + ignoreMatch() { + this.isMatchIgnored = true; + } +} + +/** + * @param {string} value + * @returns {string} + */ +function escapeHTML(value) { + return value + .replace(/&/g, '&') + .replace(//g, '>') + .replace(/"/g, '"') + .replace(/'/g, '''); +} + +/** + * performs a shallow merge of multiple objects into one + * + * @template T + * @param {T} original + * @param {Record[]} objects + * @returns {T} a single new object + */ +function inherit$1(original, ...objects) { + /** @type Record */ + const result = Object.create(null); + + for (const key in original) { + result[key] = original[key]; + } + objects.forEach(function(obj) { + for (const key in obj) { + result[key] = obj[key]; + } + }); + return /** @type {T} */ (result); +} + +/** + * @typedef {object} Renderer + * @property {(text: string) => void} addText + * @property {(node: Node) => void} openNode + * @property {(node: Node) => void} closeNode + * @property {() => string} value + */ + +/** @typedef {{scope?: string, language?: string, sublanguage?: boolean}} Node */ +/** @typedef {{walk: (r: Renderer) => void}} Tree */ +/** */ + +const SPAN_CLOSE = ''; + +/** + * Determines if a node needs to be wrapped in + * + * @param {Node} node */ +const emitsWrappingTags = (node) => { + // rarely we can have a sublanguage where language is undefined + // TODO: track down why + return !!node.scope; +}; + +/** + * + * @param {string} name + * @param {{prefix:string}} options + */ +const scopeToCSSClass = (name, { prefix }) => { + // sub-language + if (name.startsWith("language:")) { + return name.replace("language:", "language-"); + } + // tiered scope: comment.line + if (name.includes(".")) { + const pieces = name.split("."); + return [ + `${prefix}${pieces.shift()}`, + ...(pieces.map((x, i) => `${x}${"_".repeat(i + 1)}`)) + ].join(" "); + } + // simple scope + return `${prefix}${name}`; +}; + +/** @type {Renderer} */ +class HTMLRenderer { + /** + * Creates a new HTMLRenderer + * + * @param {Tree} parseTree - the parse tree (must support `walk` API) + * @param {{classPrefix: string}} options + */ + constructor(parseTree, options) { + this.buffer = ""; + this.classPrefix = options.classPrefix; + parseTree.walk(this); + } + + /** + * Adds texts to the output stream + * + * @param {string} text */ + addText(text) { + this.buffer += escapeHTML(text); + } + + /** + * Adds a node open to the output stream (if needed) + * + * @param {Node} node */ + openNode(node) { + if (!emitsWrappingTags(node)) return; + + const className = scopeToCSSClass(node.scope, + { prefix: this.classPrefix }); + this.span(className); + } + + /** + * Adds a node close to the output stream (if needed) + * + * @param {Node} node */ + closeNode(node) { + if (!emitsWrappingTags(node)) return; + + this.buffer += SPAN_CLOSE; + } + + /** + * returns the accumulated buffer + */ + value() { + return this.buffer; + } + + // helpers + + /** + * Builds a span element + * + * @param {string} className */ + span(className) { + this.buffer += ``; + } +} + +/** @typedef {{scope?: string, language?: string, children: Node[]} | string} Node */ +/** @typedef {{scope?: string, language?: string, children: Node[]} } DataNode */ +/** @typedef {import('highlight.js').Emitter} Emitter */ +/** */ + +/** @returns {DataNode} */ +const newNode = (opts = {}) => { + /** @type DataNode */ + const result = { children: [] }; + Object.assign(result, opts); + return result; +}; + +class TokenTree { + constructor() { + /** @type DataNode */ + this.rootNode = newNode(); + this.stack = [this.rootNode]; + } + + get top() { + return this.stack[this.stack.length - 1]; + } + + get root() { return this.rootNode; } + + /** @param {Node} node */ + add(node) { + this.top.children.push(node); + } + + /** @param {string} scope */ + openNode(scope) { + /** @type Node */ + const node = newNode({ scope }); + this.add(node); + this.stack.push(node); + } + + closeNode() { + if (this.stack.length > 1) { + return this.stack.pop(); + } + // eslint-disable-next-line no-undefined + return undefined; + } + + closeAllNodes() { + while (this.closeNode()); + } + + toJSON() { + return JSON.stringify(this.rootNode, null, 4); + } + + /** + * @typedef { import("./html_renderer").Renderer } Renderer + * @param {Renderer} builder + */ + walk(builder) { + // this does not + return this.constructor._walk(builder, this.rootNode); + // this works + // return TokenTree._walk(builder, this.rootNode); + } + + /** + * @param {Renderer} builder + * @param {Node} node + */ + static _walk(builder, node) { + if (typeof node === "string") { + builder.addText(node); + } else if (node.children) { + builder.openNode(node); + node.children.forEach((child) => this._walk(builder, child)); + builder.closeNode(node); + } + return builder; + } + + /** + * @param {Node} node + */ + static _collapse(node) { + if (typeof node === "string") return; + if (!node.children) return; + + if (node.children.every(el => typeof el === "string")) { + // node.text = node.children.join(""); + // delete node.children; + node.children = [node.children.join("")]; + } else { + node.children.forEach((child) => { + TokenTree._collapse(child); + }); + } + } +} + +/** + Currently this is all private API, but this is the minimal API necessary + that an Emitter must implement to fully support the parser. + + Minimal interface: + + - addText(text) + - __addSublanguage(emitter, subLanguageName) + - startScope(scope) + - endScope() + - finalize() + - toHTML() + +*/ + +/** + * @implements {Emitter} + */ +class TokenTreeEmitter extends TokenTree { + /** + * @param {*} options + */ + constructor(options) { + super(); + this.options = options; + } + + /** + * @param {string} text + */ + addText(text) { + if (text === "") { return; } + + this.add(text); + } + + /** @param {string} scope */ + startScope(scope) { + this.openNode(scope); + } + + endScope() { + this.closeNode(); + } + + /** + * @param {Emitter & {root: DataNode}} emitter + * @param {string} name + */ + __addSublanguage(emitter, name) { + /** @type DataNode */ + const node = emitter.root; + if (name) node.scope = `language:${name}`; + + this.add(node); + } + + toHTML() { + const renderer = new HTMLRenderer(this, this.options); + return renderer.value(); + } + + finalize() { + this.closeAllNodes(); + return true; + } +} + +/** + * @param {string} value + * @returns {RegExp} + * */ + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function source(re) { + if (!re) return null; + if (typeof re === "string") return re; + + return re.source; +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function lookahead(re) { + return concat('(?=', re, ')'); +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function anyNumberOfTimes(re) { + return concat('(?:', re, ')*'); +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function optional(re) { + return concat('(?:', re, ')?'); +} + +/** + * @param {...(RegExp | string) } args + * @returns {string} + */ +function concat(...args) { + const joined = args.map((x) => source(x)).join(""); + return joined; +} + +/** + * @param { Array } args + * @returns {object} + */ +function stripOptionsFromArgs(args) { + const opts = args[args.length - 1]; + + if (typeof opts === 'object' && opts.constructor === Object) { + args.splice(args.length - 1, 1); + return opts; + } else { + return {}; + } +} + +/** @typedef { {capture?: boolean} } RegexEitherOptions */ + +/** + * Any of the passed expresssions may match + * + * Creates a huge this | this | that | that match + * @param {(RegExp | string)[] | [...(RegExp | string)[], RegexEitherOptions]} args + * @returns {string} + */ +function either(...args) { + /** @type { object & {capture?: boolean} } */ + const opts = stripOptionsFromArgs(args); + const joined = '(' + + (opts.capture ? "" : "?:") + + args.map((x) => source(x)).join("|") + ")"; + return joined; +} + +/** + * @param {RegExp | string} re + * @returns {number} + */ +function countMatchGroups(re) { + return (new RegExp(re.toString() + '|')).exec('').length - 1; +} + +/** + * Does lexeme start with a regular expression match at the beginning + * @param {RegExp} re + * @param {string} lexeme + */ +function startsWith(re, lexeme) { + const match = re && re.exec(lexeme); + return match && match.index === 0; +} + +// BACKREF_RE matches an open parenthesis or backreference. To avoid +// an incorrect parse, it additionally matches the following: +// - [...] elements, where the meaning of parentheses and escapes change +// - other escape sequences, so we do not misparse escape sequences as +// interesting elements +// - non-matching or lookahead parentheses, which do not capture. These +// follow the '(' with a '?'. +const BACKREF_RE = /\[(?:[^\\\]]|\\.)*\]|\(\??|\\([1-9][0-9]*)|\\./; + +// **INTERNAL** Not intended for outside usage +// join logically computes regexps.join(separator), but fixes the +// backreferences so they continue to match. +// it also places each individual regular expression into it's own +// match group, keeping track of the sequencing of those match groups +// is currently an exercise for the caller. :-) +/** + * @param {(string | RegExp)[]} regexps + * @param {{joinWith: string}} opts + * @returns {string} + */ +function _rewriteBackreferences(regexps, { joinWith }) { + let numCaptures = 0; + + return regexps.map((regex) => { + numCaptures += 1; + const offset = numCaptures; + let re = source(regex); + let out = ''; + + while (re.length > 0) { + const match = BACKREF_RE.exec(re); + if (!match) { + out += re; + break; + } + out += re.substring(0, match.index); + re = re.substring(match.index + match[0].length); + if (match[0][0] === '\\' && match[1]) { + // Adjust the backreference. + out += '\\' + String(Number(match[1]) + offset); + } else { + out += match[0]; + if (match[0] === '(') { + numCaptures++; + } + } + } + return out; + }).map(re => `(${re})`).join(joinWith); +} + +/** @typedef {import('highlight.js').Mode} Mode */ +/** @typedef {import('highlight.js').ModeCallback} ModeCallback */ + +// Common regexps +const MATCH_NOTHING_RE = /\b\B/; +const IDENT_RE = '[a-zA-Z]\\w*'; +const UNDERSCORE_IDENT_RE = '[a-zA-Z_]\\w*'; +const NUMBER_RE = '\\b\\d+(\\.\\d+)?'; +const C_NUMBER_RE = '(-?)(\\b0[xX][a-fA-F0-9]+|(\\b\\d+(\\.\\d*)?|\\.\\d+)([eE][-+]?\\d+)?)'; // 0x..., 0..., decimal, float +const BINARY_NUMBER_RE = '\\b(0b[01]+)'; // 0b... +const RE_STARTERS_RE = '!|!=|!==|%|%=|&|&&|&=|\\*|\\*=|\\+|\\+=|,|-|-=|/=|/|:|;|<<|<<=|<=|<|===|==|=|>>>=|>>=|>=|>>>|>>|>|\\?|\\[|\\{|\\(|\\^|\\^=|\\||\\|=|\\|\\||~'; + +/** +* @param { Partial & {binary?: string | RegExp} } opts +*/ +const SHEBANG = (opts = {}) => { + const beginShebang = /^#![ ]*\//; + if (opts.binary) { + opts.begin = concat( + beginShebang, + /.*\b/, + opts.binary, + /\b.*/); + } + return inherit$1({ + scope: 'meta', + begin: beginShebang, + end: /$/, + relevance: 0, + /** @type {ModeCallback} */ + "on:begin": (m, resp) => { + if (m.index !== 0) resp.ignoreMatch(); + } + }, opts); +}; + +// Common modes +const BACKSLASH_ESCAPE = { + begin: '\\\\[\\s\\S]', relevance: 0 +}; +const APOS_STRING_MODE = { + scope: 'string', + begin: '\'', + end: '\'', + illegal: '\\n', + contains: [BACKSLASH_ESCAPE] +}; +const QUOTE_STRING_MODE = { + scope: 'string', + begin: '"', + end: '"', + illegal: '\\n', + contains: [BACKSLASH_ESCAPE] +}; +const PHRASAL_WORDS_MODE = { + begin: /\b(a|an|the|are|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such|will|you|your|they|like|more)\b/ +}; +/** + * Creates a comment mode + * + * @param {string | RegExp} begin + * @param {string | RegExp} end + * @param {Mode | {}} [modeOptions] + * @returns {Partial} + */ +const COMMENT = function(begin, end, modeOptions = {}) { + const mode = inherit$1( + { + scope: 'comment', + begin, + end, + contains: [] + }, + modeOptions + ); + mode.contains.push({ + scope: 'doctag', + // hack to avoid the space from being included. the space is necessary to + // match here to prevent the plain text rule below from gobbling up doctags + begin: '[ ]*(?=(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):)', + end: /(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):/, + excludeBegin: true, + relevance: 0 + }); + const ENGLISH_WORD = either( + // list of common 1 and 2 letter words in English + "I", + "a", + "is", + "so", + "us", + "to", + "at", + "if", + "in", + "it", + "on", + // note: this is not an exhaustive list of contractions, just popular ones + /[A-Za-z]+['](d|ve|re|ll|t|s|n)/, // contractions - can't we'd they're let's, etc + /[A-Za-z]+[-][a-z]+/, // `no-way`, etc. + /[A-Za-z][a-z]{2,}/ // allow capitalized words at beginning of sentences + ); + // looking like plain text, more likely to be a comment + mode.contains.push( + { + // TODO: how to include ", (, ) without breaking grammars that use these for + // comment delimiters? + // begin: /[ ]+([()"]?([A-Za-z'-]{3,}|is|a|I|so|us|[tT][oO]|at|if|in|it|on)[.]?[()":]?([.][ ]|[ ]|\))){3}/ + // --- + + // this tries to find sequences of 3 english words in a row (without any + // "programming" type syntax) this gives us a strong signal that we've + // TRULY found a comment - vs perhaps scanning with the wrong language. + // It's possible to find something that LOOKS like the start of the + // comment - but then if there is no readable text - good chance it is a + // false match and not a comment. + // + // for a visual example please see: + // https://github.com/highlightjs/highlight.js/issues/2827 + + begin: concat( + /[ ]+/, // necessary to prevent us gobbling up doctags like /* @author Bob Mcgill */ + '(', + ENGLISH_WORD, + /[.]?[:]?([.][ ]|[ ])/, + '){3}') // look for 3 words in a row + } + ); + return mode; +}; +const C_LINE_COMMENT_MODE = COMMENT('//', '$'); +const C_BLOCK_COMMENT_MODE = COMMENT('/\\*', '\\*/'); +const HASH_COMMENT_MODE = COMMENT('#', '$'); +const NUMBER_MODE = { + scope: 'number', + begin: NUMBER_RE, + relevance: 0 +}; +const C_NUMBER_MODE = { + scope: 'number', + begin: C_NUMBER_RE, + relevance: 0 +}; +const BINARY_NUMBER_MODE = { + scope: 'number', + begin: BINARY_NUMBER_RE, + relevance: 0 +}; +const REGEXP_MODE = { + scope: "regexp", + begin: /\/(?=[^/\n]*\/)/, + end: /\/[gimuy]*/, + contains: [ + BACKSLASH_ESCAPE, + { + begin: /\[/, + end: /\]/, + relevance: 0, + contains: [BACKSLASH_ESCAPE] + } + ] +}; +const TITLE_MODE = { + scope: 'title', + begin: IDENT_RE, + relevance: 0 +}; +const UNDERSCORE_TITLE_MODE = { + scope: 'title', + begin: UNDERSCORE_IDENT_RE, + relevance: 0 +}; +const METHOD_GUARD = { + // excludes method names from keyword processing + begin: '\\.\\s*' + UNDERSCORE_IDENT_RE, + relevance: 0 +}; + +/** + * Adds end same as begin mechanics to a mode + * + * Your mode must include at least a single () match group as that first match + * group is what is used for comparison + * @param {Partial} mode + */ +const END_SAME_AS_BEGIN = function(mode) { + return Object.assign(mode, + { + /** @type {ModeCallback} */ + 'on:begin': (m, resp) => { resp.data._beginMatch = m[1]; }, + /** @type {ModeCallback} */ + 'on:end': (m, resp) => { if (resp.data._beginMatch !== m[1]) resp.ignoreMatch(); } + }); +}; + +var MODES = /*#__PURE__*/Object.freeze({ + __proto__: null, + APOS_STRING_MODE: APOS_STRING_MODE, + BACKSLASH_ESCAPE: BACKSLASH_ESCAPE, + BINARY_NUMBER_MODE: BINARY_NUMBER_MODE, + BINARY_NUMBER_RE: BINARY_NUMBER_RE, + COMMENT: COMMENT, + C_BLOCK_COMMENT_MODE: C_BLOCK_COMMENT_MODE, + C_LINE_COMMENT_MODE: C_LINE_COMMENT_MODE, + C_NUMBER_MODE: C_NUMBER_MODE, + C_NUMBER_RE: C_NUMBER_RE, + END_SAME_AS_BEGIN: END_SAME_AS_BEGIN, + HASH_COMMENT_MODE: HASH_COMMENT_MODE, + IDENT_RE: IDENT_RE, + MATCH_NOTHING_RE: MATCH_NOTHING_RE, + METHOD_GUARD: METHOD_GUARD, + NUMBER_MODE: NUMBER_MODE, + NUMBER_RE: NUMBER_RE, + PHRASAL_WORDS_MODE: PHRASAL_WORDS_MODE, + QUOTE_STRING_MODE: QUOTE_STRING_MODE, + REGEXP_MODE: REGEXP_MODE, + RE_STARTERS_RE: RE_STARTERS_RE, + SHEBANG: SHEBANG, + TITLE_MODE: TITLE_MODE, + UNDERSCORE_IDENT_RE: UNDERSCORE_IDENT_RE, + UNDERSCORE_TITLE_MODE: UNDERSCORE_TITLE_MODE +}); + +/** +@typedef {import('highlight.js').CallbackResponse} CallbackResponse +@typedef {import('highlight.js').CompilerExt} CompilerExt +*/ + +// Grammar extensions / plugins +// See: https://github.com/highlightjs/highlight.js/issues/2833 + +// Grammar extensions allow "syntactic sugar" to be added to the grammar modes +// without requiring any underlying changes to the compiler internals. + +// `compileMatch` being the perfect small example of now allowing a grammar +// author to write `match` when they desire to match a single expression rather +// than being forced to use `begin`. The extension then just moves `match` into +// `begin` when it runs. Ie, no features have been added, but we've just made +// the experience of writing (and reading grammars) a little bit nicer. + +// ------ + +// TODO: We need negative look-behind support to do this properly +/** + * Skip a match if it has a preceding dot + * + * This is used for `beginKeywords` to prevent matching expressions such as + * `bob.keyword.do()`. The mode compiler automatically wires this up as a + * special _internal_ 'on:begin' callback for modes with `beginKeywords` + * @param {RegExpMatchArray} match + * @param {CallbackResponse} response + */ +function skipIfHasPrecedingDot(match, response) { + const before = match.input[match.index - 1]; + if (before === ".") { + response.ignoreMatch(); + } +} + +/** + * + * @type {CompilerExt} + */ +function scopeClassName(mode, _parent) { + // eslint-disable-next-line no-undefined + if (mode.className !== undefined) { + mode.scope = mode.className; + delete mode.className; + } +} + +/** + * `beginKeywords` syntactic sugar + * @type {CompilerExt} + */ +function beginKeywords(mode, parent) { + if (!parent) return; + if (!mode.beginKeywords) return; + + // for languages with keywords that include non-word characters checking for + // a word boundary is not sufficient, so instead we check for a word boundary + // or whitespace - this does no harm in any case since our keyword engine + // doesn't allow spaces in keywords anyways and we still check for the boundary + // first + mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')(?!\\.)(?=\\b|\\s)'; + mode.__beforeBegin = skipIfHasPrecedingDot; + mode.keywords = mode.keywords || mode.beginKeywords; + delete mode.beginKeywords; + + // prevents double relevance, the keywords themselves provide + // relevance, the mode doesn't need to double it + // eslint-disable-next-line no-undefined + if (mode.relevance === undefined) mode.relevance = 0; +} + +/** + * Allow `illegal` to contain an array of illegal values + * @type {CompilerExt} + */ +function compileIllegal(mode, _parent) { + if (!Array.isArray(mode.illegal)) return; + + mode.illegal = either(...mode.illegal); +} + +/** + * `match` to match a single expression for readability + * @type {CompilerExt} + */ +function compileMatch(mode, _parent) { + if (!mode.match) return; + if (mode.begin || mode.end) throw new Error("begin & end are not supported with match"); + + mode.begin = mode.match; + delete mode.match; +} + +/** + * provides the default 1 relevance to all modes + * @type {CompilerExt} + */ +function compileRelevance(mode, _parent) { + // eslint-disable-next-line no-undefined + if (mode.relevance === undefined) mode.relevance = 1; +} + +// allow beforeMatch to act as a "qualifier" for the match +// the full match begin must be [beforeMatch][begin] +const beforeMatchExt = (mode, parent) => { + if (!mode.beforeMatch) return; + // starts conflicts with endsParent which we need to make sure the child + // rule is not matched multiple times + if (mode.starts) throw new Error("beforeMatch cannot be used with starts"); + + const originalMode = Object.assign({}, mode); + Object.keys(mode).forEach((key) => { delete mode[key]; }); + + mode.keywords = originalMode.keywords; + mode.begin = concat(originalMode.beforeMatch, lookahead(originalMode.begin)); + mode.starts = { + relevance: 0, + contains: [ + Object.assign(originalMode, { endsParent: true }) + ] + }; + mode.relevance = 0; + + delete originalMode.beforeMatch; +}; + +// keywords that should have no default relevance value +const COMMON_KEYWORDS = [ + 'of', + 'and', + 'for', + 'in', + 'not', + 'or', + 'if', + 'then', + 'parent', // common variable name + 'list', // common variable name + 'value' // common variable name +]; + +const DEFAULT_KEYWORD_SCOPE = "keyword"; + +/** + * Given raw keywords from a language definition, compile them. + * + * @param {string | Record | Array} rawKeywords + * @param {boolean} caseInsensitive + */ +function compileKeywords(rawKeywords, caseInsensitive, scopeName = DEFAULT_KEYWORD_SCOPE) { + /** @type {import("highlight.js/private").KeywordDict} */ + const compiledKeywords = Object.create(null); + + // input can be a string of keywords, an array of keywords, or a object with + // named keys representing scopeName (which can then point to a string or array) + if (typeof rawKeywords === 'string') { + compileList(scopeName, rawKeywords.split(" ")); + } else if (Array.isArray(rawKeywords)) { + compileList(scopeName, rawKeywords); + } else { + Object.keys(rawKeywords).forEach(function(scopeName) { + // collapse all our objects back into the parent object + Object.assign( + compiledKeywords, + compileKeywords(rawKeywords[scopeName], caseInsensitive, scopeName) + ); + }); + } + return compiledKeywords; + + // --- + + /** + * Compiles an individual list of keywords + * + * Ex: "for if when while|5" + * + * @param {string} scopeName + * @param {Array} keywordList + */ + function compileList(scopeName, keywordList) { + if (caseInsensitive) { + keywordList = keywordList.map(x => x.toLowerCase()); + } + keywordList.forEach(function(keyword) { + const pair = keyword.split('|'); + compiledKeywords[pair[0]] = [scopeName, scoreForKeyword(pair[0], pair[1])]; + }); + } +} + +/** + * Returns the proper score for a given keyword + * + * Also takes into account comment keywords, which will be scored 0 UNLESS + * another score has been manually assigned. + * @param {string} keyword + * @param {string} [providedScore] + */ +function scoreForKeyword(keyword, providedScore) { + // manual scores always win over common keywords + // so you can force a score of 1 if you really insist + if (providedScore) { + return Number(providedScore); + } + + return commonKeyword(keyword) ? 0 : 1; +} + +/** + * Determines if a given keyword is common or not + * + * @param {string} keyword */ +function commonKeyword(keyword) { + return COMMON_KEYWORDS.includes(keyword.toLowerCase()); +} + +/* + +For the reasoning behind this please see: +https://github.com/highlightjs/highlight.js/issues/2880#issuecomment-747275419 + +*/ + +/** + * @type {Record} + */ +const seenDeprecations = {}; + +/** + * @param {string} message + */ +const error = (message) => { + console.error(message); +}; + +/** + * @param {string} message + * @param {any} args + */ +const warn = (message, ...args) => { + console.log(`WARN: ${message}`, ...args); +}; + +/** + * @param {string} version + * @param {string} message + */ +const deprecated = (version, message) => { + if (seenDeprecations[`${version}/${message}`]) return; + + console.log(`Deprecated as of ${version}. ${message}`); + seenDeprecations[`${version}/${message}`] = true; +}; + +/* eslint-disable no-throw-literal */ + +/** +@typedef {import('highlight.js').CompiledMode} CompiledMode +*/ + +const MultiClassError = new Error(); + +/** + * Renumbers labeled scope names to account for additional inner match + * groups that otherwise would break everything. + * + * Lets say we 3 match scopes: + * + * { 1 => ..., 2 => ..., 3 => ... } + * + * So what we need is a clean match like this: + * + * (a)(b)(c) => [ "a", "b", "c" ] + * + * But this falls apart with inner match groups: + * + * (a)(((b)))(c) => ["a", "b", "b", "b", "c" ] + * + * Our scopes are now "out of alignment" and we're repeating `b` 3 times. + * What needs to happen is the numbers are remapped: + * + * { 1 => ..., 2 => ..., 5 => ... } + * + * We also need to know that the ONLY groups that should be output + * are 1, 2, and 5. This function handles this behavior. + * + * @param {CompiledMode} mode + * @param {Array} regexes + * @param {{key: "beginScope"|"endScope"}} opts + */ +function remapScopeNames(mode, regexes, { key }) { + let offset = 0; + const scopeNames = mode[key]; + /** @type Record */ + const emit = {}; + /** @type Record */ + const positions = {}; + + for (let i = 1; i <= regexes.length; i++) { + positions[i + offset] = scopeNames[i]; + emit[i + offset] = true; + offset += countMatchGroups(regexes[i - 1]); + } + // we use _emit to keep track of which match groups are "top-level" to avoid double + // output from inside match groups + mode[key] = positions; + mode[key]._emit = emit; + mode[key]._multi = true; +} + +/** + * @param {CompiledMode} mode + */ +function beginMultiClass(mode) { + if (!Array.isArray(mode.begin)) return; + + if (mode.skip || mode.excludeBegin || mode.returnBegin) { + error("skip, excludeBegin, returnBegin not compatible with beginScope: {}"); + throw MultiClassError; + } + + if (typeof mode.beginScope !== "object" || mode.beginScope === null) { + error("beginScope must be object"); + throw MultiClassError; + } + + remapScopeNames(mode, mode.begin, { key: "beginScope" }); + mode.begin = _rewriteBackreferences(mode.begin, { joinWith: "" }); +} + +/** + * @param {CompiledMode} mode + */ +function endMultiClass(mode) { + if (!Array.isArray(mode.end)) return; + + if (mode.skip || mode.excludeEnd || mode.returnEnd) { + error("skip, excludeEnd, returnEnd not compatible with endScope: {}"); + throw MultiClassError; + } + + if (typeof mode.endScope !== "object" || mode.endScope === null) { + error("endScope must be object"); + throw MultiClassError; + } + + remapScopeNames(mode, mode.end, { key: "endScope" }); + mode.end = _rewriteBackreferences(mode.end, { joinWith: "" }); +} + +/** + * this exists only to allow `scope: {}` to be used beside `match:` + * Otherwise `beginScope` would necessary and that would look weird + + { + match: [ /def/, /\w+/ ] + scope: { 1: "keyword" , 2: "title" } + } + + * @param {CompiledMode} mode + */ +function scopeSugar(mode) { + if (mode.scope && typeof mode.scope === "object" && mode.scope !== null) { + mode.beginScope = mode.scope; + delete mode.scope; + } +} + +/** + * @param {CompiledMode} mode + */ +function MultiClass(mode) { + scopeSugar(mode); + + if (typeof mode.beginScope === "string") { + mode.beginScope = { _wrap: mode.beginScope }; + } + if (typeof mode.endScope === "string") { + mode.endScope = { _wrap: mode.endScope }; + } + + beginMultiClass(mode); + endMultiClass(mode); +} + +/** +@typedef {import('highlight.js').Mode} Mode +@typedef {import('highlight.js').CompiledMode} CompiledMode +@typedef {import('highlight.js').Language} Language +@typedef {import('highlight.js').HLJSPlugin} HLJSPlugin +@typedef {import('highlight.js').CompiledLanguage} CompiledLanguage +*/ + +// compilation + +/** + * Compiles a language definition result + * + * Given the raw result of a language definition (Language), compiles this so + * that it is ready for highlighting code. + * @param {Language} language + * @returns {CompiledLanguage} + */ +function compileLanguage(language) { + /** + * Builds a regex with the case sensitivity of the current language + * + * @param {RegExp | string} value + * @param {boolean} [global] + */ + function langRe(value, global) { + return new RegExp( + source(value), + 'm' + + (language.case_insensitive ? 'i' : '') + + (language.unicodeRegex ? 'u' : '') + + (global ? 'g' : '') + ); + } + + /** + Stores multiple regular expressions and allows you to quickly search for + them all in a string simultaneously - returning the first match. It does + this by creating a huge (a|b|c) regex - each individual item wrapped with () + and joined by `|` - using match groups to track position. When a match is + found checking which position in the array has content allows us to figure + out which of the original regexes / match groups triggered the match. + + The match object itself (the result of `Regex.exec`) is returned but also + enhanced by merging in any meta-data that was registered with the regex. + This is how we keep track of which mode matched, and what type of rule + (`illegal`, `begin`, end, etc). + */ + class MultiRegex { + constructor() { + this.matchIndexes = {}; + // @ts-ignore + this.regexes = []; + this.matchAt = 1; + this.position = 0; + } + + // @ts-ignore + addRule(re, opts) { + opts.position = this.position++; + // @ts-ignore + this.matchIndexes[this.matchAt] = opts; + this.regexes.push([opts, re]); + this.matchAt += countMatchGroups(re) + 1; + } + + compile() { + if (this.regexes.length === 0) { + // avoids the need to check length every time exec is called + // @ts-ignore + this.exec = () => null; + } + const terminators = this.regexes.map(el => el[1]); + this.matcherRe = langRe(_rewriteBackreferences(terminators, { joinWith: '|' }), true); + this.lastIndex = 0; + } + + /** @param {string} s */ + exec(s) { + this.matcherRe.lastIndex = this.lastIndex; + const match = this.matcherRe.exec(s); + if (!match) { return null; } + + // eslint-disable-next-line no-undefined + const i = match.findIndex((el, i) => i > 0 && el !== undefined); + // @ts-ignore + const matchData = this.matchIndexes[i]; + // trim off any earlier non-relevant match groups (ie, the other regex + // match groups that make up the multi-matcher) + match.splice(0, i); + + return Object.assign(match, matchData); + } + } + + /* + Created to solve the key deficiently with MultiRegex - there is no way to + test for multiple matches at a single location. Why would we need to do + that? In the future a more dynamic engine will allow certain matches to be + ignored. An example: if we matched say the 3rd regex in a large group but + decided to ignore it - we'd need to started testing again at the 4th + regex... but MultiRegex itself gives us no real way to do that. + + So what this class creates MultiRegexs on the fly for whatever search + position they are needed. + + NOTE: These additional MultiRegex objects are created dynamically. For most + grammars most of the time we will never actually need anything more than the + first MultiRegex - so this shouldn't have too much overhead. + + Say this is our search group, and we match regex3, but wish to ignore it. + + regex1 | regex2 | regex3 | regex4 | regex5 ' ie, startAt = 0 + + What we need is a new MultiRegex that only includes the remaining + possibilities: + + regex4 | regex5 ' ie, startAt = 3 + + This class wraps all that complexity up in a simple API... `startAt` decides + where in the array of expressions to start doing the matching. It + auto-increments, so if a match is found at position 2, then startAt will be + set to 3. If the end is reached startAt will return to 0. + + MOST of the time the parser will be setting startAt manually to 0. + */ + class ResumableMultiRegex { + constructor() { + // @ts-ignore + this.rules = []; + // @ts-ignore + this.multiRegexes = []; + this.count = 0; + + this.lastIndex = 0; + this.regexIndex = 0; + } + + // @ts-ignore + getMatcher(index) { + if (this.multiRegexes[index]) return this.multiRegexes[index]; + + const matcher = new MultiRegex(); + this.rules.slice(index).forEach(([re, opts]) => matcher.addRule(re, opts)); + matcher.compile(); + this.multiRegexes[index] = matcher; + return matcher; + } + + resumingScanAtSamePosition() { + return this.regexIndex !== 0; + } + + considerAll() { + this.regexIndex = 0; + } + + // @ts-ignore + addRule(re, opts) { + this.rules.push([re, opts]); + if (opts.type === "begin") this.count++; + } + + /** @param {string} s */ + exec(s) { + const m = this.getMatcher(this.regexIndex); + m.lastIndex = this.lastIndex; + let result = m.exec(s); + + // The following is because we have no easy way to say "resume scanning at the + // existing position but also skip the current rule ONLY". What happens is + // all prior rules are also skipped which can result in matching the wrong + // thing. Example of matching "booger": + + // our matcher is [string, "booger", number] + // + // ....booger.... + + // if "booger" is ignored then we'd really need a regex to scan from the + // SAME position for only: [string, number] but ignoring "booger" (if it + // was the first match), a simple resume would scan ahead who knows how + // far looking only for "number", ignoring potential string matches (or + // future "booger" matches that might be valid.) + + // So what we do: We execute two matchers, one resuming at the same + // position, but the second full matcher starting at the position after: + + // /--- resume first regex match here (for [number]) + // |/---- full match here for [string, "booger", number] + // vv + // ....booger.... + + // Which ever results in a match first is then used. So this 3-4 step + // process essentially allows us to say "match at this position, excluding + // a prior rule that was ignored". + // + // 1. Match "booger" first, ignore. Also proves that [string] does non match. + // 2. Resume matching for [number] + // 3. Match at index + 1 for [string, "booger", number] + // 4. If #2 and #3 result in matches, which came first? + if (this.resumingScanAtSamePosition()) { + if (result && result.index === this.lastIndex) ; else { // use the second matcher result + const m2 = this.getMatcher(0); + m2.lastIndex = this.lastIndex + 1; + result = m2.exec(s); + } + } + + if (result) { + this.regexIndex += result.position + 1; + if (this.regexIndex === this.count) { + // wrap-around to considering all matches again + this.considerAll(); + } + } + + return result; + } + } + + /** + * Given a mode, builds a huge ResumableMultiRegex that can be used to walk + * the content and find matches. + * + * @param {CompiledMode} mode + * @returns {ResumableMultiRegex} + */ + function buildModeRegex(mode) { + const mm = new ResumableMultiRegex(); + + mode.contains.forEach(term => mm.addRule(term.begin, { rule: term, type: "begin" })); + + if (mode.terminatorEnd) { + mm.addRule(mode.terminatorEnd, { type: "end" }); + } + if (mode.illegal) { + mm.addRule(mode.illegal, { type: "illegal" }); + } + + return mm; + } + + /** skip vs abort vs ignore + * + * @skip - The mode is still entered and exited normally (and contains rules apply), + * but all content is held and added to the parent buffer rather than being + * output when the mode ends. Mostly used with `sublanguage` to build up + * a single large buffer than can be parsed by sublanguage. + * + * - The mode begin ands ends normally. + * - Content matched is added to the parent mode buffer. + * - The parser cursor is moved forward normally. + * + * @abort - A hack placeholder until we have ignore. Aborts the mode (as if it + * never matched) but DOES NOT continue to match subsequent `contains` + * modes. Abort is bad/suboptimal because it can result in modes + * farther down not getting applied because an earlier rule eats the + * content but then aborts. + * + * - The mode does not begin. + * - Content matched by `begin` is added to the mode buffer. + * - The parser cursor is moved forward accordingly. + * + * @ignore - Ignores the mode (as if it never matched) and continues to match any + * subsequent `contains` modes. Ignore isn't technically possible with + * the current parser implementation. + * + * - The mode does not begin. + * - Content matched by `begin` is ignored. + * - The parser cursor is not moved forward. + */ + + /** + * Compiles an individual mode + * + * This can raise an error if the mode contains certain detectable known logic + * issues. + * @param {Mode} mode + * @param {CompiledMode | null} [parent] + * @returns {CompiledMode | never} + */ + function compileMode(mode, parent) { + const cmode = /** @type CompiledMode */ (mode); + if (mode.isCompiled) return cmode; + + [ + scopeClassName, + // do this early so compiler extensions generally don't have to worry about + // the distinction between match/begin + compileMatch, + MultiClass, + beforeMatchExt + ].forEach(ext => ext(mode, parent)); + + language.compilerExtensions.forEach(ext => ext(mode, parent)); + + // __beforeBegin is considered private API, internal use only + mode.__beforeBegin = null; + + [ + beginKeywords, + // do this later so compiler extensions that come earlier have access to the + // raw array if they wanted to perhaps manipulate it, etc. + compileIllegal, + // default to 1 relevance if not specified + compileRelevance + ].forEach(ext => ext(mode, parent)); + + mode.isCompiled = true; + + let keywordPattern = null; + if (typeof mode.keywords === "object" && mode.keywords.$pattern) { + // we need a copy because keywords might be compiled multiple times + // so we can't go deleting $pattern from the original on the first + // pass + mode.keywords = Object.assign({}, mode.keywords); + keywordPattern = mode.keywords.$pattern; + delete mode.keywords.$pattern; + } + keywordPattern = keywordPattern || /\w+/; + + if (mode.keywords) { + mode.keywords = compileKeywords(mode.keywords, language.case_insensitive); + } + + cmode.keywordPatternRe = langRe(keywordPattern, true); + + if (parent) { + if (!mode.begin) mode.begin = /\B|\b/; + cmode.beginRe = langRe(cmode.begin); + if (!mode.end && !mode.endsWithParent) mode.end = /\B|\b/; + if (mode.end) cmode.endRe = langRe(cmode.end); + cmode.terminatorEnd = source(cmode.end) || ''; + if (mode.endsWithParent && parent.terminatorEnd) { + cmode.terminatorEnd += (mode.end ? '|' : '') + parent.terminatorEnd; + } + } + if (mode.illegal) cmode.illegalRe = langRe(/** @type {RegExp | string} */ (mode.illegal)); + if (!mode.contains) mode.contains = []; + + mode.contains = [].concat(...mode.contains.map(function(c) { + return expandOrCloneMode(c === 'self' ? mode : c); + })); + mode.contains.forEach(function(c) { compileMode(/** @type Mode */ (c), cmode); }); + + if (mode.starts) { + compileMode(mode.starts, parent); + } + + cmode.matcher = buildModeRegex(cmode); + return cmode; + } + + if (!language.compilerExtensions) language.compilerExtensions = []; + + // self is not valid at the top-level + if (language.contains && language.contains.includes('self')) { + throw new Error("ERR: contains `self` is not supported at the top-level of a language. See documentation."); + } + + // we need a null object, which inherit will guarantee + language.classNameAliases = inherit$1(language.classNameAliases || {}); + + return compileMode(/** @type Mode */ (language)); +} + +/** + * Determines if a mode has a dependency on it's parent or not + * + * If a mode does have a parent dependency then often we need to clone it if + * it's used in multiple places so that each copy points to the correct parent, + * where-as modes without a parent can often safely be re-used at the bottom of + * a mode chain. + * + * @param {Mode | null} mode + * @returns {boolean} - is there a dependency on the parent? + * */ +function dependencyOnParent(mode) { + if (!mode) return false; + + return mode.endsWithParent || dependencyOnParent(mode.starts); +} + +/** + * Expands a mode or clones it if necessary + * + * This is necessary for modes with parental dependenceis (see notes on + * `dependencyOnParent`) and for nodes that have `variants` - which must then be + * exploded into their own individual modes at compile time. + * + * @param {Mode} mode + * @returns {Mode | Mode[]} + * */ +function expandOrCloneMode(mode) { + if (mode.variants && !mode.cachedVariants) { + mode.cachedVariants = mode.variants.map(function(variant) { + return inherit$1(mode, { variants: null }, variant); + }); + } + + // EXPAND + // if we have variants then essentially "replace" the mode with the variants + // this happens in compileMode, where this function is called from + if (mode.cachedVariants) { + return mode.cachedVariants; + } + + // CLONE + // if we have dependencies on parents then we need a unique + // instance of ourselves, so we can be reused with many + // different parents without issue + if (dependencyOnParent(mode)) { + return inherit$1(mode, { starts: mode.starts ? inherit$1(mode.starts) : null }); + } + + if (Object.isFrozen(mode)) { + return inherit$1(mode); + } + + // no special dependency issues, just return ourselves + return mode; +} + +var version = "11.9.0"; + +class HTMLInjectionError extends Error { + constructor(reason, html) { + super(reason); + this.name = "HTMLInjectionError"; + this.html = html; + } +} + +/* +Syntax highlighting with language autodetection. +https://highlightjs.org/ +*/ + + + +/** +@typedef {import('highlight.js').Mode} Mode +@typedef {import('highlight.js').CompiledMode} CompiledMode +@typedef {import('highlight.js').CompiledScope} CompiledScope +@typedef {import('highlight.js').Language} Language +@typedef {import('highlight.js').HLJSApi} HLJSApi +@typedef {import('highlight.js').HLJSPlugin} HLJSPlugin +@typedef {import('highlight.js').PluginEvent} PluginEvent +@typedef {import('highlight.js').HLJSOptions} HLJSOptions +@typedef {import('highlight.js').LanguageFn} LanguageFn +@typedef {import('highlight.js').HighlightedHTMLElement} HighlightedHTMLElement +@typedef {import('highlight.js').BeforeHighlightContext} BeforeHighlightContext +@typedef {import('highlight.js/private').MatchType} MatchType +@typedef {import('highlight.js/private').KeywordData} KeywordData +@typedef {import('highlight.js/private').EnhancedMatch} EnhancedMatch +@typedef {import('highlight.js/private').AnnotatedError} AnnotatedError +@typedef {import('highlight.js').AutoHighlightResult} AutoHighlightResult +@typedef {import('highlight.js').HighlightOptions} HighlightOptions +@typedef {import('highlight.js').HighlightResult} HighlightResult +*/ + + +const escape = escapeHTML; +const inherit = inherit$1; +const NO_MATCH = Symbol("nomatch"); +const MAX_KEYWORD_HITS = 7; + +/** + * @param {any} hljs - object that is extended (legacy) + * @returns {HLJSApi} + */ +const HLJS = function(hljs) { + // Global internal variables used within the highlight.js library. + /** @type {Record} */ + const languages = Object.create(null); + /** @type {Record} */ + const aliases = Object.create(null); + /** @type {HLJSPlugin[]} */ + const plugins = []; + + // safe/production mode - swallows more errors, tries to keep running + // even if a single syntax or parse hits a fatal error + let SAFE_MODE = true; + const LANGUAGE_NOT_FOUND = "Could not find the language '{}', did you forget to load/include a language module?"; + /** @type {Language} */ + const PLAINTEXT_LANGUAGE = { disableAutodetect: true, name: 'Plain text', contains: [] }; + + // Global options used when within external APIs. This is modified when + // calling the `hljs.configure` function. + /** @type HLJSOptions */ + let options = { + ignoreUnescapedHTML: false, + throwUnescapedHTML: false, + noHighlightRe: /^(no-?highlight)$/i, + languageDetectRe: /\blang(?:uage)?-([\w-]+)\b/i, + classPrefix: 'hljs-', + cssSelector: 'pre code', + languages: null, + // beta configuration options, subject to change, welcome to discuss + // https://github.com/highlightjs/highlight.js/issues/1086 + __emitter: TokenTreeEmitter + }; + + /* Utility functions */ + + /** + * Tests a language name to see if highlighting should be skipped + * @param {string} languageName + */ + function shouldNotHighlight(languageName) { + return options.noHighlightRe.test(languageName); + } + + /** + * @param {HighlightedHTMLElement} block - the HTML element to determine language for + */ + function blockLanguage(block) { + let classes = block.className + ' '; + + classes += block.parentNode ? block.parentNode.className : ''; + + // language-* takes precedence over non-prefixed class names. + const match = options.languageDetectRe.exec(classes); + if (match) { + const language = getLanguage(match[1]); + if (!language) { + warn(LANGUAGE_NOT_FOUND.replace("{}", match[1])); + warn("Falling back to no-highlight mode for this block.", block); + } + return language ? match[1] : 'no-highlight'; + } + + return classes + .split(/\s+/) + .find((_class) => shouldNotHighlight(_class) || getLanguage(_class)); + } + + /** + * Core highlighting function. + * + * OLD API + * highlight(lang, code, ignoreIllegals, continuation) + * + * NEW API + * highlight(code, {lang, ignoreIllegals}) + * + * @param {string} codeOrLanguageName - the language to use for highlighting + * @param {string | HighlightOptions} optionsOrCode - the code to highlight + * @param {boolean} [ignoreIllegals] - whether to ignore illegal matches, default is to bail + * + * @returns {HighlightResult} Result - an object that represents the result + * @property {string} language - the language name + * @property {number} relevance - the relevance score + * @property {string} value - the highlighted HTML code + * @property {string} code - the original raw code + * @property {CompiledMode} top - top of the current mode stack + * @property {boolean} illegal - indicates whether any illegal matches were found + */ + function highlight(codeOrLanguageName, optionsOrCode, ignoreIllegals) { + let code = ""; + let languageName = ""; + if (typeof optionsOrCode === "object") { + code = codeOrLanguageName; + ignoreIllegals = optionsOrCode.ignoreIllegals; + languageName = optionsOrCode.language; + } else { + // old API + deprecated("10.7.0", "highlight(lang, code, ...args) has been deprecated."); + deprecated("10.7.0", "Please use highlight(code, options) instead.\nhttps://github.com/highlightjs/highlight.js/issues/2277"); + languageName = codeOrLanguageName; + code = optionsOrCode; + } + + // https://github.com/highlightjs/highlight.js/issues/3149 + // eslint-disable-next-line no-undefined + if (ignoreIllegals === undefined) { ignoreIllegals = true; } + + /** @type {BeforeHighlightContext} */ + const context = { + code, + language: languageName + }; + // the plugin can change the desired language or the code to be highlighted + // just be changing the object it was passed + fire("before:highlight", context); + + // a before plugin can usurp the result completely by providing it's own + // in which case we don't even need to call highlight + const result = context.result + ? context.result + : _highlight(context.language, context.code, ignoreIllegals); + + result.code = context.code; + // the plugin can change anything in result to suite it + fire("after:highlight", result); + + return result; + } + + /** + * private highlight that's used internally and does not fire callbacks + * + * @param {string} languageName - the language to use for highlighting + * @param {string} codeToHighlight - the code to highlight + * @param {boolean?} [ignoreIllegals] - whether to ignore illegal matches, default is to bail + * @param {CompiledMode?} [continuation] - current continuation mode, if any + * @returns {HighlightResult} - result of the highlight operation + */ + function _highlight(languageName, codeToHighlight, ignoreIllegals, continuation) { + const keywordHits = Object.create(null); + + /** + * Return keyword data if a match is a keyword + * @param {CompiledMode} mode - current mode + * @param {string} matchText - the textual match + * @returns {KeywordData | false} + */ + function keywordData(mode, matchText) { + return mode.keywords[matchText]; + } + + function processKeywords() { + if (!top.keywords) { + emitter.addText(modeBuffer); + return; + } + + let lastIndex = 0; + top.keywordPatternRe.lastIndex = 0; + let match = top.keywordPatternRe.exec(modeBuffer); + let buf = ""; + + while (match) { + buf += modeBuffer.substring(lastIndex, match.index); + const word = language.case_insensitive ? match[0].toLowerCase() : match[0]; + const data = keywordData(top, word); + if (data) { + const [kind, keywordRelevance] = data; + emitter.addText(buf); + buf = ""; + + keywordHits[word] = (keywordHits[word] || 0) + 1; + if (keywordHits[word] <= MAX_KEYWORD_HITS) relevance += keywordRelevance; + if (kind.startsWith("_")) { + // _ implied for relevance only, do not highlight + // by applying a class name + buf += match[0]; + } else { + const cssClass = language.classNameAliases[kind] || kind; + emitKeyword(match[0], cssClass); + } + } else { + buf += match[0]; + } + lastIndex = top.keywordPatternRe.lastIndex; + match = top.keywordPatternRe.exec(modeBuffer); + } + buf += modeBuffer.substring(lastIndex); + emitter.addText(buf); + } + + function processSubLanguage() { + if (modeBuffer === "") return; + /** @type HighlightResult */ + let result = null; + + if (typeof top.subLanguage === 'string') { + if (!languages[top.subLanguage]) { + emitter.addText(modeBuffer); + return; + } + result = _highlight(top.subLanguage, modeBuffer, true, continuations[top.subLanguage]); + continuations[top.subLanguage] = /** @type {CompiledMode} */ (result._top); + } else { + result = highlightAuto(modeBuffer, top.subLanguage.length ? top.subLanguage : null); + } + + // Counting embedded language score towards the host language may be disabled + // with zeroing the containing mode relevance. Use case in point is Markdown that + // allows XML everywhere and makes every XML snippet to have a much larger Markdown + // score. + if (top.relevance > 0) { + relevance += result.relevance; + } + emitter.__addSublanguage(result._emitter, result.language); + } + + function processBuffer() { + if (top.subLanguage != null) { + processSubLanguage(); + } else { + processKeywords(); + } + modeBuffer = ''; + } + + /** + * @param {string} text + * @param {string} scope + */ + function emitKeyword(keyword, scope) { + if (keyword === "") return; + + emitter.startScope(scope); + emitter.addText(keyword); + emitter.endScope(); + } + + /** + * @param {CompiledScope} scope + * @param {RegExpMatchArray} match + */ + function emitMultiClass(scope, match) { + let i = 1; + const max = match.length - 1; + while (i <= max) { + if (!scope._emit[i]) { i++; continue; } + const klass = language.classNameAliases[scope[i]] || scope[i]; + const text = match[i]; + if (klass) { + emitKeyword(text, klass); + } else { + modeBuffer = text; + processKeywords(); + modeBuffer = ""; + } + i++; + } + } + + /** + * @param {CompiledMode} mode - new mode to start + * @param {RegExpMatchArray} match + */ + function startNewMode(mode, match) { + if (mode.scope && typeof mode.scope === "string") { + emitter.openNode(language.classNameAliases[mode.scope] || mode.scope); + } + if (mode.beginScope) { + // beginScope just wraps the begin match itself in a scope + if (mode.beginScope._wrap) { + emitKeyword(modeBuffer, language.classNameAliases[mode.beginScope._wrap] || mode.beginScope._wrap); + modeBuffer = ""; + } else if (mode.beginScope._multi) { + // at this point modeBuffer should just be the match + emitMultiClass(mode.beginScope, match); + modeBuffer = ""; + } + } + + top = Object.create(mode, { parent: { value: top } }); + return top; + } + + /** + * @param {CompiledMode } mode - the mode to potentially end + * @param {RegExpMatchArray} match - the latest match + * @param {string} matchPlusRemainder - match plus remainder of content + * @returns {CompiledMode | void} - the next mode, or if void continue on in current mode + */ + function endOfMode(mode, match, matchPlusRemainder) { + let matched = startsWith(mode.endRe, matchPlusRemainder); + + if (matched) { + if (mode["on:end"]) { + const resp = new Response(mode); + mode["on:end"](match, resp); + if (resp.isMatchIgnored) matched = false; + } + + if (matched) { + while (mode.endsParent && mode.parent) { + mode = mode.parent; + } + return mode; + } + } + // even if on:end fires an `ignore` it's still possible + // that we might trigger the end node because of a parent mode + if (mode.endsWithParent) { + return endOfMode(mode.parent, match, matchPlusRemainder); + } + } + + /** + * Handle matching but then ignoring a sequence of text + * + * @param {string} lexeme - string containing full match text + */ + function doIgnore(lexeme) { + if (top.matcher.regexIndex === 0) { + // no more regexes to potentially match here, so we move the cursor forward one + // space + modeBuffer += lexeme[0]; + return 1; + } else { + // no need to move the cursor, we still have additional regexes to try and + // match at this very spot + resumeScanAtSamePosition = true; + return 0; + } + } + + /** + * Handle the start of a new potential mode match + * + * @param {EnhancedMatch} match - the current match + * @returns {number} how far to advance the parse cursor + */ + function doBeginMatch(match) { + const lexeme = match[0]; + const newMode = match.rule; + + const resp = new Response(newMode); + // first internal before callbacks, then the public ones + const beforeCallbacks = [newMode.__beforeBegin, newMode["on:begin"]]; + for (const cb of beforeCallbacks) { + if (!cb) continue; + cb(match, resp); + if (resp.isMatchIgnored) return doIgnore(lexeme); + } + + if (newMode.skip) { + modeBuffer += lexeme; + } else { + if (newMode.excludeBegin) { + modeBuffer += lexeme; + } + processBuffer(); + if (!newMode.returnBegin && !newMode.excludeBegin) { + modeBuffer = lexeme; + } + } + startNewMode(newMode, match); + return newMode.returnBegin ? 0 : lexeme.length; + } + + /** + * Handle the potential end of mode + * + * @param {RegExpMatchArray} match - the current match + */ + function doEndMatch(match) { + const lexeme = match[0]; + const matchPlusRemainder = codeToHighlight.substring(match.index); + + const endMode = endOfMode(top, match, matchPlusRemainder); + if (!endMode) { return NO_MATCH; } + + const origin = top; + if (top.endScope && top.endScope._wrap) { + processBuffer(); + emitKeyword(lexeme, top.endScope._wrap); + } else if (top.endScope && top.endScope._multi) { + processBuffer(); + emitMultiClass(top.endScope, match); + } else if (origin.skip) { + modeBuffer += lexeme; + } else { + if (!(origin.returnEnd || origin.excludeEnd)) { + modeBuffer += lexeme; + } + processBuffer(); + if (origin.excludeEnd) { + modeBuffer = lexeme; + } + } + do { + if (top.scope) { + emitter.closeNode(); + } + if (!top.skip && !top.subLanguage) { + relevance += top.relevance; + } + top = top.parent; + } while (top !== endMode.parent); + if (endMode.starts) { + startNewMode(endMode.starts, match); + } + return origin.returnEnd ? 0 : lexeme.length; + } + + function processContinuations() { + const list = []; + for (let current = top; current !== language; current = current.parent) { + if (current.scope) { + list.unshift(current.scope); + } + } + list.forEach(item => emitter.openNode(item)); + } + + /** @type {{type?: MatchType, index?: number, rule?: Mode}}} */ + let lastMatch = {}; + + /** + * Process an individual match + * + * @param {string} textBeforeMatch - text preceding the match (since the last match) + * @param {EnhancedMatch} [match] - the match itself + */ + function processLexeme(textBeforeMatch, match) { + const lexeme = match && match[0]; + + // add non-matched text to the current mode buffer + modeBuffer += textBeforeMatch; + + if (lexeme == null) { + processBuffer(); + return 0; + } + + // we've found a 0 width match and we're stuck, so we need to advance + // this happens when we have badly behaved rules that have optional matchers to the degree that + // sometimes they can end up matching nothing at all + // Ref: https://github.com/highlightjs/highlight.js/issues/2140 + if (lastMatch.type === "begin" && match.type === "end" && lastMatch.index === match.index && lexeme === "") { + // spit the "skipped" character that our regex choked on back into the output sequence + modeBuffer += codeToHighlight.slice(match.index, match.index + 1); + if (!SAFE_MODE) { + /** @type {AnnotatedError} */ + const err = new Error(`0 width match regex (${languageName})`); + err.languageName = languageName; + err.badRule = lastMatch.rule; + throw err; + } + return 1; + } + lastMatch = match; + + if (match.type === "begin") { + return doBeginMatch(match); + } else if (match.type === "illegal" && !ignoreIllegals) { + // illegal match, we do not continue processing + /** @type {AnnotatedError} */ + const err = new Error('Illegal lexeme "' + lexeme + '" for mode "' + (top.scope || '') + '"'); + err.mode = top; + throw err; + } else if (match.type === "end") { + const processed = doEndMatch(match); + if (processed !== NO_MATCH) { + return processed; + } + } + + // edge case for when illegal matches $ (end of line) which is technically + // a 0 width match but not a begin/end match so it's not caught by the + // first handler (when ignoreIllegals is true) + if (match.type === "illegal" && lexeme === "") { + // advance so we aren't stuck in an infinite loop + return 1; + } + + // infinite loops are BAD, this is a last ditch catch all. if we have a + // decent number of iterations yet our index (cursor position in our + // parsing) still 3x behind our index then something is very wrong + // so we bail + if (iterations > 100000 && iterations > match.index * 3) { + const err = new Error('potential infinite loop, way more iterations than matches'); + throw err; + } + + /* + Why might be find ourselves here? An potential end match that was + triggered but could not be completed. IE, `doEndMatch` returned NO_MATCH. + (this could be because a callback requests the match be ignored, etc) + + This causes no real harm other than stopping a few times too many. + */ + + modeBuffer += lexeme; + return lexeme.length; + } + + const language = getLanguage(languageName); + if (!language) { + error(LANGUAGE_NOT_FOUND.replace("{}", languageName)); + throw new Error('Unknown language: "' + languageName + '"'); + } + + const md = compileLanguage(language); + let result = ''; + /** @type {CompiledMode} */ + let top = continuation || md; + /** @type Record */ + const continuations = {}; // keep continuations for sub-languages + const emitter = new options.__emitter(options); + processContinuations(); + let modeBuffer = ''; + let relevance = 0; + let index = 0; + let iterations = 0; + let resumeScanAtSamePosition = false; + + try { + if (!language.__emitTokens) { + top.matcher.considerAll(); + + for (;;) { + iterations++; + if (resumeScanAtSamePosition) { + // only regexes not matched previously will now be + // considered for a potential match + resumeScanAtSamePosition = false; + } else { + top.matcher.considerAll(); + } + top.matcher.lastIndex = index; + + const match = top.matcher.exec(codeToHighlight); + // console.log("match", match[0], match.rule && match.rule.begin) + + if (!match) break; + + const beforeMatch = codeToHighlight.substring(index, match.index); + const processedCount = processLexeme(beforeMatch, match); + index = match.index + processedCount; + } + processLexeme(codeToHighlight.substring(index)); + } else { + language.__emitTokens(codeToHighlight, emitter); + } + + emitter.finalize(); + result = emitter.toHTML(); + + return { + language: languageName, + value: result, + relevance, + illegal: false, + _emitter: emitter, + _top: top + }; + } catch (err) { + if (err.message && err.message.includes('Illegal')) { + return { + language: languageName, + value: escape(codeToHighlight), + illegal: true, + relevance: 0, + _illegalBy: { + message: err.message, + index, + context: codeToHighlight.slice(index - 100, index + 100), + mode: err.mode, + resultSoFar: result + }, + _emitter: emitter + }; + } else if (SAFE_MODE) { + return { + language: languageName, + value: escape(codeToHighlight), + illegal: false, + relevance: 0, + errorRaised: err, + _emitter: emitter, + _top: top + }; + } else { + throw err; + } + } + } + + /** + * returns a valid highlight result, without actually doing any actual work, + * auto highlight starts with this and it's possible for small snippets that + * auto-detection may not find a better match + * @param {string} code + * @returns {HighlightResult} + */ + function justTextHighlightResult(code) { + const result = { + value: escape(code), + illegal: false, + relevance: 0, + _top: PLAINTEXT_LANGUAGE, + _emitter: new options.__emitter(options) + }; + result._emitter.addText(code); + return result; + } + + /** + Highlighting with language detection. Accepts a string with the code to + highlight. Returns an object with the following properties: + + - language (detected language) + - relevance (int) + - value (an HTML string with highlighting markup) + - secondBest (object with the same structure for second-best heuristically + detected language, may be absent) + + @param {string} code + @param {Array} [languageSubset] + @returns {AutoHighlightResult} + */ + function highlightAuto(code, languageSubset) { + languageSubset = languageSubset || options.languages || Object.keys(languages); + const plaintext = justTextHighlightResult(code); + + const results = languageSubset.filter(getLanguage).filter(autoDetection).map(name => + _highlight(name, code, false) + ); + results.unshift(plaintext); // plaintext is always an option + + const sorted = results.sort((a, b) => { + // sort base on relevance + if (a.relevance !== b.relevance) return b.relevance - a.relevance; + + // always award the tie to the base language + // ie if C++ and Arduino are tied, it's more likely to be C++ + if (a.language && b.language) { + if (getLanguage(a.language).supersetOf === b.language) { + return 1; + } else if (getLanguage(b.language).supersetOf === a.language) { + return -1; + } + } + + // otherwise say they are equal, which has the effect of sorting on + // relevance while preserving the original ordering - which is how ties + // have historically been settled, ie the language that comes first always + // wins in the case of a tie + return 0; + }); + + const [best, secondBest] = sorted; + + /** @type {AutoHighlightResult} */ + const result = best; + result.secondBest = secondBest; + + return result; + } + + /** + * Builds new class name for block given the language name + * + * @param {HTMLElement} element + * @param {string} [currentLang] + * @param {string} [resultLang] + */ + function updateClassName(element, currentLang, resultLang) { + const language = (currentLang && aliases[currentLang]) || resultLang; + + element.classList.add("hljs"); + element.classList.add(`language-${language}`); + } + + /** + * Applies highlighting to a DOM node containing code. + * + * @param {HighlightedHTMLElement} element - the HTML element to highlight + */ + function highlightElement(element) { + /** @type HTMLElement */ + let node = null; + const language = blockLanguage(element); + + if (shouldNotHighlight(language)) return; + + fire("before:highlightElement", + { el: element, language }); + + if (element.dataset.highlighted) { + console.log("Element previously highlighted. To highlight again, first unset `dataset.highlighted`.", element); + return; + } + + // we should be all text, no child nodes (unescaped HTML) - this is possibly + // an HTML injection attack - it's likely too late if this is already in + // production (the code has likely already done its damage by the time + // we're seeing it)... but we yell loudly about this so that hopefully it's + // more likely to be caught in development before making it to production + if (element.children.length > 0) { + if (!options.ignoreUnescapedHTML) { + console.warn("One of your code blocks includes unescaped HTML. This is a potentially serious security risk."); + console.warn("https://github.com/highlightjs/highlight.js/wiki/security"); + console.warn("The element with unescaped HTML:"); + console.warn(element); + } + if (options.throwUnescapedHTML) { + const err = new HTMLInjectionError( + "One of your code blocks includes unescaped HTML.", + element.innerHTML + ); + throw err; + } + } + + node = element; + const text = node.textContent; + const result = language ? highlight(text, { language, ignoreIllegals: true }) : highlightAuto(text); + + element.innerHTML = result.value; + element.dataset.highlighted = "yes"; + updateClassName(element, language, result.language); + element.result = { + language: result.language, + // TODO: remove with version 11.0 + re: result.relevance, + relevance: result.relevance + }; + if (result.secondBest) { + element.secondBest = { + language: result.secondBest.language, + relevance: result.secondBest.relevance + }; + } + + fire("after:highlightElement", { el: element, result, text }); + } + + /** + * Updates highlight.js global options with the passed options + * + * @param {Partial} userOptions + */ + function configure(userOptions) { + options = inherit(options, userOptions); + } + + // TODO: remove v12, deprecated + const initHighlighting = () => { + highlightAll(); + deprecated("10.6.0", "initHighlighting() deprecated. Use highlightAll() now."); + }; + + // TODO: remove v12, deprecated + function initHighlightingOnLoad() { + highlightAll(); + deprecated("10.6.0", "initHighlightingOnLoad() deprecated. Use highlightAll() now."); + } + + let wantsHighlight = false; + + /** + * auto-highlights all pre>code elements on the page + */ + function highlightAll() { + // if we are called too early in the loading process + if (document.readyState === "loading") { + wantsHighlight = true; + return; + } + + const blocks = document.querySelectorAll(options.cssSelector); + blocks.forEach(highlightElement); + } + + function boot() { + // if a highlight was requested before DOM was loaded, do now + if (wantsHighlight) highlightAll(); + } + + // make sure we are in the browser environment + if (typeof window !== 'undefined' && window.addEventListener) { + window.addEventListener('DOMContentLoaded', boot, false); + } + + /** + * Register a language grammar module + * + * @param {string} languageName + * @param {LanguageFn} languageDefinition + */ + function registerLanguage(languageName, languageDefinition) { + let lang = null; + try { + lang = languageDefinition(hljs); + } catch (error$1) { + error("Language definition for '{}' could not be registered.".replace("{}", languageName)); + // hard or soft error + if (!SAFE_MODE) { throw error$1; } else { error(error$1); } + // languages that have serious errors are replaced with essentially a + // "plaintext" stand-in so that the code blocks will still get normal + // css classes applied to them - and one bad language won't break the + // entire highlighter + lang = PLAINTEXT_LANGUAGE; + } + // give it a temporary name if it doesn't have one in the meta-data + if (!lang.name) lang.name = languageName; + languages[languageName] = lang; + lang.rawDefinition = languageDefinition.bind(null, hljs); + + if (lang.aliases) { + registerAliases(lang.aliases, { languageName }); + } + } + + /** + * Remove a language grammar module + * + * @param {string} languageName + */ + function unregisterLanguage(languageName) { + delete languages[languageName]; + for (const alias of Object.keys(aliases)) { + if (aliases[alias] === languageName) { + delete aliases[alias]; + } + } + } + + /** + * @returns {string[]} List of language internal names + */ + function listLanguages() { + return Object.keys(languages); + } + + /** + * @param {string} name - name of the language to retrieve + * @returns {Language | undefined} + */ + function getLanguage(name) { + name = (name || '').toLowerCase(); + return languages[name] || languages[aliases[name]]; + } + + /** + * + * @param {string|string[]} aliasList - single alias or list of aliases + * @param {{languageName: string}} opts + */ + function registerAliases(aliasList, { languageName }) { + if (typeof aliasList === 'string') { + aliasList = [aliasList]; + } + aliasList.forEach(alias => { aliases[alias.toLowerCase()] = languageName; }); + } + + /** + * Determines if a given language has auto-detection enabled + * @param {string} name - name of the language + */ + function autoDetection(name) { + const lang = getLanguage(name); + return lang && !lang.disableAutodetect; + } + + /** + * Upgrades the old highlightBlock plugins to the new + * highlightElement API + * @param {HLJSPlugin} plugin + */ + function upgradePluginAPI(plugin) { + // TODO: remove with v12 + if (plugin["before:highlightBlock"] && !plugin["before:highlightElement"]) { + plugin["before:highlightElement"] = (data) => { + plugin["before:highlightBlock"]( + Object.assign({ block: data.el }, data) + ); + }; + } + if (plugin["after:highlightBlock"] && !plugin["after:highlightElement"]) { + plugin["after:highlightElement"] = (data) => { + plugin["after:highlightBlock"]( + Object.assign({ block: data.el }, data) + ); + }; + } + } + + /** + * @param {HLJSPlugin} plugin + */ + function addPlugin(plugin) { + upgradePluginAPI(plugin); + plugins.push(plugin); + } + + /** + * @param {HLJSPlugin} plugin + */ + function removePlugin(plugin) { + const index = plugins.indexOf(plugin); + if (index !== -1) { + plugins.splice(index, 1); + } + } + + /** + * + * @param {PluginEvent} event + * @param {any} args + */ + function fire(event, args) { + const cb = event; + plugins.forEach(function(plugin) { + if (plugin[cb]) { + plugin[cb](args); + } + }); + } + + /** + * DEPRECATED + * @param {HighlightedHTMLElement} el + */ + function deprecateHighlightBlock(el) { + deprecated("10.7.0", "highlightBlock will be removed entirely in v12.0"); + deprecated("10.7.0", "Please use highlightElement now."); + + return highlightElement(el); + } + + /* Interface definition */ + Object.assign(hljs, { + highlight, + highlightAuto, + highlightAll, + highlightElement, + // TODO: Remove with v12 API + highlightBlock: deprecateHighlightBlock, + configure, + initHighlighting, + initHighlightingOnLoad, + registerLanguage, + unregisterLanguage, + listLanguages, + getLanguage, + registerAliases, + autoDetection, + inherit, + addPlugin, + removePlugin + }); + + hljs.debugMode = function() { SAFE_MODE = false; }; + hljs.safeMode = function() { SAFE_MODE = true; }; + hljs.versionString = version; + + hljs.regex = { + concat: concat, + lookahead: lookahead, + either: either, + optional: optional, + anyNumberOfTimes: anyNumberOfTimes + }; + + for (const key in MODES) { + // @ts-ignore + if (typeof MODES[key] === "object") { + // @ts-ignore + deepFreeze(MODES[key]); + } + } + + // merge all the modes/regexes into our main object + Object.assign(hljs, MODES); + + return hljs; +}; + +// Other names for the variable may break build script +const highlight = HLJS({}); + +// returns a new instance of the highlighter to be used for extensions +// check https://github.com/wooorm/lowlight/issues/47 +highlight.newInstance = () => HLJS({}); + +export { highlight as default }; diff --git a/highlightjs/es/core.min.js b/highlightjs/es/core.min.js new file mode 100644 index 0000000..c6d4ae5 --- /dev/null +++ b/highlightjs/es/core.min.js @@ -0,0 +1,307 @@ +/*! + Highlight.js v11.9.0 (git: b7ec4bfafc) + (c) 2006-2023 undefined and other contributors + License: BSD-3-Clause + */ +function e(t){return t instanceof 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t._emitter.addText(e),t})(e),s=t.filter(O).filter(v).map((t=>E(t,e,!1))) +;s.unshift(n);const r=s.sort(((e,t)=>{ +if(e.relevance!==t.relevance)return t.relevance-e.relevance +;if(e.language&&t.language){if(O(e.language).supersetOf===t.language)return 1 +;if(O(t.language).supersetOf===e.language)return-1}return 0})),[o,a]=r,c=o +;return c.secondBest=a,c}function w(e){let t=null;const n=(e=>{ +let t=e.className+" ";t+=e.parentNode?e.parentNode.className:"" +;const n=p.languageDetectRe.exec(t);if(n){const t=O(n[1]) +;return t||(X(a.replace("{}",n[1])), +X("Falling back to no-highlight mode for this block.",e)),t?n[1]:"no-highlight"} +return t.split(/\s+/).find((e=>b(e)||O(e)))})(e);if(b(n))return +;if(N("before:highlightElement",{el:e,language:n +}),e.dataset.highlighted)return void console.log("Element previously highlighted. To highlight again, first unset `dataset.highlighted`.",e) +;if(e.children.length>0&&(p.ignoreUnescapedHTML||(console.warn("One of your code blocks includes unescaped HTML. This is a potentially serious security risk."), +console.warn("https://github.com/highlightjs/highlight.js/wiki/security"), +console.warn("The element with unescaped HTML:"), +console.warn(e)),p.throwUnescapedHTML))throw new J("One of your code blocks includes unescaped HTML.",e.innerHTML) +;t=e;const i=t.textContent,r=n?m(i,{language:n,ignoreIllegals:!0}):x(i) +;e.innerHTML=r.value,e.dataset.highlighted="yes",((e,t,n)=>{const i=t&&s[t]||n +;e.classList.add("hljs"),e.classList.add("language-"+i) +})(e,n,r.language),e.result={language:r.language,re:r.relevance, +relevance:r.relevance},r.secondBest&&(e.secondBest={ +language:r.secondBest.language,relevance:r.secondBest.relevance +}),N("after:highlightElement",{el:e,result:r,text:i})}let y=!1;function _(){ +"loading"!==document.readyState?document.querySelectorAll(p.cssSelector).forEach(w):y=!0 +}function O(e){return e=(e||"").toLowerCase(),i[e]||i[s[e]]} +function k(e,{languageName:t}){"string"==typeof e&&(e=[e]),e.forEach((e=>{ +s[e.toLowerCase()]=t}))}function v(e){const t=O(e) +;return t&&!t.disableAutodetect}function N(e,t){const n=e;r.forEach((e=>{ +e[n]&&e[n](t)}))} +"undefined"!=typeof window&&window.addEventListener&&window.addEventListener("DOMContentLoaded",(()=>{ +y&&_()}),!1),Object.assign(n,{highlight:m,highlightAuto:x,highlightAll:_, +highlightElement:w, +highlightBlock:e=>(G("10.7.0","highlightBlock will be removed entirely in v12.0"), +G("10.7.0","Please use highlightElement now."),w(e)),configure:e=>{p=Q(p,e)}, +initHighlighting:()=>{ +_(),G("10.6.0","initHighlighting() deprecated. Use highlightAll() now.")}, +initHighlightingOnLoad:()=>{ +_(),G("10.6.0","initHighlightingOnLoad() deprecated. Use highlightAll() now.") +},registerLanguage:(e,t)=>{let s=null;try{s=t(n)}catch(t){ +if(W("Language definition for '{}' could not be registered.".replace("{}",e)), +!o)throw t;W(t),s=l} +s.name||(s.name=e),i[e]=s,s.rawDefinition=t.bind(null,n),s.aliases&&k(s.aliases,{ +languageName:e})},unregisterLanguage:e=>{delete i[e] +;for(const t of Object.keys(s))s[t]===e&&delete s[t]}, +listLanguages:()=>Object.keys(i),getLanguage:O,registerAliases:k, +autoDetection:v,inherit:Q,addPlugin:e=>{(e=>{ +e["before:highlightBlock"]&&!e["before:highlightElement"]&&(e["before:highlightElement"]=t=>{ +e["before:highlightBlock"](Object.assign({block:t.el},t)) +}),e["after:highlightBlock"]&&!e["after:highlightElement"]&&(e["after:highlightElement"]=t=>{ +e["after:highlightBlock"](Object.assign({block:t.el},t))})})(e),r.push(e)}, +removePlugin:e=>{const t=r.indexOf(e);-1!==t&&r.splice(t,1)}}),n.debugMode=()=>{ +o=!1},n.safeMode=()=>{o=!0},n.versionString="11.9.0",n.regex={concat:h, +lookahead:g,either:f,optional:d,anyNumberOfTimes:u} +;for(const t in A)"object"==typeof A[t]&&e(A[t]);return Object.assign(n,A),n +},ne=te({});ne.newInstance=()=>te({});export{ne as default}; \ No newline at end of file diff --git a/highlightjs/es/highlight.js b/highlightjs/es/highlight.js new file mode 100644 index 0000000..7294b81 --- /dev/null +++ b/highlightjs/es/highlight.js @@ -0,0 +1,2600 @@ +/*! + Highlight.js v11.9.0 (git: b7ec4bfafc) + (c) 2006-2023 undefined and other contributors + License: BSD-3-Clause + */ +/* eslint-disable no-multi-assign */ + +function deepFreeze(obj) { + if (obj instanceof Map) { + obj.clear = + obj.delete = + obj.set = + function () { + throw new Error('map is read-only'); + }; + } else if (obj instanceof Set) { + obj.add = + obj.clear = + obj.delete = + function () { + throw new Error('set is read-only'); + }; + } + + // Freeze self + Object.freeze(obj); + + Object.getOwnPropertyNames(obj).forEach((name) => { + const prop = obj[name]; + const type = typeof prop; + + // Freeze prop if it is an object or function and also not already frozen + if ((type === 'object' || type === 'function') && !Object.isFrozen(prop)) { + deepFreeze(prop); + } + }); + + return obj; +} + +/** @typedef {import('highlight.js').CallbackResponse} CallbackResponse */ +/** @typedef {import('highlight.js').CompiledMode} CompiledMode */ +/** @implements CallbackResponse */ + +class Response { + /** + * @param {CompiledMode} mode + */ + constructor(mode) { + // eslint-disable-next-line no-undefined + if (mode.data === undefined) mode.data = {}; + + this.data = mode.data; + this.isMatchIgnored = false; + } + + ignoreMatch() { + this.isMatchIgnored = true; + } +} + +/** + * @param {string} value + * @returns {string} + */ +function escapeHTML(value) { + return value + .replace(/&/g, '&') + .replace(//g, '>') + .replace(/"/g, '"') + .replace(/'/g, '''); +} + +/** + * performs a shallow merge of multiple objects into one + * + * @template T + * @param {T} original + * @param {Record[]} objects + * @returns {T} a single new object + */ +function inherit$1(original, ...objects) { + /** @type Record */ + const result = Object.create(null); + + for (const key in original) { + result[key] = original[key]; + } + objects.forEach(function(obj) { + for (const key in obj) { + result[key] = obj[key]; + } + }); + return /** @type {T} */ (result); +} + +/** + * @typedef {object} Renderer + * @property {(text: string) => void} addText + * @property {(node: Node) => void} openNode + * @property {(node: Node) => void} closeNode + * @property {() => string} value + */ + +/** @typedef {{scope?: string, language?: string, sublanguage?: boolean}} Node */ +/** @typedef {{walk: (r: Renderer) => void}} Tree */ +/** */ + +const SPAN_CLOSE = ''; + +/** + * Determines if a node needs to be wrapped in + * + * @param {Node} node */ +const emitsWrappingTags = (node) => { + // rarely we can have a sublanguage where language is undefined + // TODO: track down why + return !!node.scope; +}; + +/** + * + * @param {string} name + * @param {{prefix:string}} options + */ +const scopeToCSSClass = (name, { prefix }) => { + // sub-language + if (name.startsWith("language:")) { + return name.replace("language:", "language-"); + } + // tiered scope: comment.line + if (name.includes(".")) { + const pieces = name.split("."); + return [ + `${prefix}${pieces.shift()}`, + ...(pieces.map((x, i) => `${x}${"_".repeat(i + 1)}`)) + ].join(" "); + } + // simple scope + return `${prefix}${name}`; +}; + +/** @type {Renderer} */ +class HTMLRenderer { + /** + * Creates a new HTMLRenderer + * + * @param {Tree} parseTree - the parse tree (must support `walk` API) + * @param {{classPrefix: string}} options + */ + constructor(parseTree, options) { + this.buffer = ""; + this.classPrefix = options.classPrefix; + parseTree.walk(this); + } + + /** + * Adds texts to the output stream + * + * @param {string} text */ + addText(text) { + this.buffer += escapeHTML(text); + } + + /** + * Adds a node open to the output stream (if needed) + * + * @param {Node} node */ + openNode(node) { + if (!emitsWrappingTags(node)) return; + + const className = scopeToCSSClass(node.scope, + { prefix: this.classPrefix }); + this.span(className); + } + + /** + * Adds a node close to the output stream (if needed) + * + * @param {Node} node */ + closeNode(node) { + if (!emitsWrappingTags(node)) return; + + this.buffer += SPAN_CLOSE; + } + + /** + * returns the accumulated buffer + */ + value() { + return this.buffer; + } + + // helpers + + /** + * Builds a span element + * + * @param {string} className */ + span(className) { + this.buffer += ``; + } +} + +/** @typedef {{scope?: string, language?: string, children: Node[]} | string} Node */ +/** @typedef {{scope?: string, language?: string, children: Node[]} } DataNode */ +/** @typedef {import('highlight.js').Emitter} Emitter */ +/** */ + +/** @returns {DataNode} */ +const newNode = (opts = {}) => { + /** @type DataNode */ + const result = { children: [] }; + Object.assign(result, opts); + return result; +}; + +class TokenTree { + constructor() { + /** @type DataNode */ + this.rootNode = newNode(); + this.stack = [this.rootNode]; + } + + get top() { + return this.stack[this.stack.length - 1]; + } + + get root() { return this.rootNode; } + + /** @param {Node} node */ + add(node) { + this.top.children.push(node); + } + + /** @param {string} scope */ + openNode(scope) { + /** @type Node */ + const node = newNode({ scope }); + this.add(node); + this.stack.push(node); + } + + closeNode() { + if (this.stack.length > 1) { + return this.stack.pop(); + } + // eslint-disable-next-line no-undefined + return undefined; + } + + closeAllNodes() { + while (this.closeNode()); + } + + toJSON() { + return JSON.stringify(this.rootNode, null, 4); + } + + /** + * @typedef { import("./html_renderer").Renderer } Renderer + * @param {Renderer} builder + */ + walk(builder) { + // this does not + return this.constructor._walk(builder, this.rootNode); + // this works + // return TokenTree._walk(builder, this.rootNode); + } + + /** + * @param {Renderer} builder + * @param {Node} node + */ + static _walk(builder, node) { + if (typeof node === "string") { + builder.addText(node); + } else if (node.children) { + builder.openNode(node); + node.children.forEach((child) => this._walk(builder, child)); + builder.closeNode(node); + } + return builder; + } + + /** + * @param {Node} node + */ + static _collapse(node) { + if (typeof node === "string") return; + if (!node.children) return; + + if (node.children.every(el => typeof el === "string")) { + // node.text = node.children.join(""); + // delete node.children; + node.children = [node.children.join("")]; + } else { + node.children.forEach((child) => { + TokenTree._collapse(child); + }); + } + } +} + +/** + Currently this is all private API, but this is the minimal API necessary + that an Emitter must implement to fully support the parser. + + Minimal interface: + + - addText(text) + - __addSublanguage(emitter, subLanguageName) + - startScope(scope) + - endScope() + - finalize() + - toHTML() + +*/ + +/** + * @implements {Emitter} + */ +class TokenTreeEmitter extends TokenTree { + /** + * @param {*} options + */ + constructor(options) { + super(); + this.options = options; + } + + /** + * @param {string} text + */ + addText(text) { + if (text === "") { return; } + + this.add(text); + } + + /** @param {string} scope */ + startScope(scope) { + this.openNode(scope); + } + + endScope() { + this.closeNode(); + } + + /** + * @param {Emitter & {root: DataNode}} emitter + * @param {string} name + */ + __addSublanguage(emitter, name) { + /** @type DataNode */ + const node = emitter.root; + if (name) node.scope = `language:${name}`; + + this.add(node); + } + + toHTML() { + const renderer = new HTMLRenderer(this, this.options); + return renderer.value(); + } + + finalize() { + this.closeAllNodes(); + return true; + } +} + +/** + * @param {string} value + * @returns {RegExp} + * */ + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function source(re) { + if (!re) return null; + if (typeof re === "string") return re; + + return re.source; +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function lookahead(re) { + return concat('(?=', re, ')'); +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function anyNumberOfTimes(re) { + return concat('(?:', re, ')*'); +} + +/** + * @param {RegExp | string } re + * @returns {string} + */ +function optional(re) { + return concat('(?:', re, ')?'); +} + +/** + * @param {...(RegExp | string) } args + * @returns {string} + */ +function concat(...args) { + const joined = args.map((x) => source(x)).join(""); + return joined; +} + +/** + * @param { Array } args + * @returns {object} + */ +function stripOptionsFromArgs(args) { + const opts = args[args.length - 1]; + + if (typeof opts === 'object' && opts.constructor === Object) { + args.splice(args.length - 1, 1); + return opts; + } else { + return {}; + } +} + +/** @typedef { {capture?: boolean} } RegexEitherOptions */ + +/** + * Any of the passed expresssions may match + * + * Creates a huge this | this | that | that match + * @param {(RegExp | string)[] | [...(RegExp | string)[], RegexEitherOptions]} args + * @returns {string} + */ +function either(...args) { + /** @type { object & {capture?: boolean} } */ + const opts = stripOptionsFromArgs(args); + const joined = '(' + + (opts.capture ? "" : "?:") + + args.map((x) => source(x)).join("|") + ")"; + return joined; +} + +/** + * @param {RegExp | string} re + * @returns {number} + */ +function countMatchGroups(re) { + return (new RegExp(re.toString() + '|')).exec('').length - 1; +} + +/** + * Does lexeme start with a regular expression match at the beginning + * @param {RegExp} re + * @param {string} lexeme + */ +function startsWith(re, lexeme) { + const match = re && re.exec(lexeme); + return match && match.index === 0; +} + +// BACKREF_RE matches an open parenthesis or backreference. To avoid +// an incorrect parse, it additionally matches the following: +// - [...] elements, where the meaning of parentheses and escapes change +// - other escape sequences, so we do not misparse escape sequences as +// interesting elements +// - non-matching or lookahead parentheses, which do not capture. These +// follow the '(' with a '?'. +const BACKREF_RE = /\[(?:[^\\\]]|\\.)*\]|\(\??|\\([1-9][0-9]*)|\\./; + +// **INTERNAL** Not intended for outside usage +// join logically computes regexps.join(separator), but fixes the +// backreferences so they continue to match. +// it also places each individual regular expression into it's own +// match group, keeping track of the sequencing of those match groups +// is currently an exercise for the caller. :-) +/** + * @param {(string | RegExp)[]} regexps + * @param {{joinWith: string}} opts + * @returns {string} + */ +function _rewriteBackreferences(regexps, { joinWith }) { + let numCaptures = 0; + + return regexps.map((regex) => { + numCaptures += 1; + const offset = numCaptures; + let re = source(regex); + let out = ''; + + while (re.length > 0) { + const match = BACKREF_RE.exec(re); + if (!match) { + out += re; + break; + } + out += re.substring(0, match.index); + re = re.substring(match.index + match[0].length); + if (match[0][0] === '\\' && match[1]) { + // Adjust the backreference. + out += '\\' + String(Number(match[1]) + offset); + } else { + out += match[0]; + if (match[0] === '(') { + numCaptures++; + } + } + } + return out; + }).map(re => `(${re})`).join(joinWith); +} + +/** @typedef {import('highlight.js').Mode} Mode */ +/** @typedef {import('highlight.js').ModeCallback} ModeCallback */ + +// Common regexps +const MATCH_NOTHING_RE = /\b\B/; +const IDENT_RE = '[a-zA-Z]\\w*'; +const UNDERSCORE_IDENT_RE = '[a-zA-Z_]\\w*'; +const NUMBER_RE = '\\b\\d+(\\.\\d+)?'; +const C_NUMBER_RE = '(-?)(\\b0[xX][a-fA-F0-9]+|(\\b\\d+(\\.\\d*)?|\\.\\d+)([eE][-+]?\\d+)?)'; // 0x..., 0..., decimal, float +const BINARY_NUMBER_RE = '\\b(0b[01]+)'; // 0b... +const RE_STARTERS_RE = '!|!=|!==|%|%=|&|&&|&=|\\*|\\*=|\\+|\\+=|,|-|-=|/=|/|:|;|<<|<<=|<=|<|===|==|=|>>>=|>>=|>=|>>>|>>|>|\\?|\\[|\\{|\\(|\\^|\\^=|\\||\\|=|\\|\\||~'; + +/** +* @param { Partial & {binary?: string | RegExp} } opts +*/ +const SHEBANG = (opts = {}) => { + const beginShebang = /^#![ ]*\//; + if (opts.binary) { + opts.begin = concat( + beginShebang, + /.*\b/, + opts.binary, + /\b.*/); + } + return inherit$1({ + scope: 'meta', + begin: beginShebang, + end: /$/, + relevance: 0, + /** @type {ModeCallback} */ + "on:begin": (m, resp) => { + if (m.index !== 0) resp.ignoreMatch(); + } + }, opts); +}; + +// Common modes +const BACKSLASH_ESCAPE = { + begin: '\\\\[\\s\\S]', relevance: 0 +}; +const APOS_STRING_MODE = { + scope: 'string', + begin: '\'', + end: '\'', + illegal: '\\n', + contains: [BACKSLASH_ESCAPE] +}; +const QUOTE_STRING_MODE = { + scope: 'string', + begin: '"', + end: '"', + illegal: '\\n', + contains: [BACKSLASH_ESCAPE] +}; +const PHRASAL_WORDS_MODE = { + begin: /\b(a|an|the|are|I'm|isn't|don't|doesn't|won't|but|just|should|pretty|simply|enough|gonna|going|wtf|so|such|will|you|your|they|like|more)\b/ +}; +/** + * Creates a comment mode + * + * @param {string | RegExp} begin + * @param {string | RegExp} end + * @param {Mode | {}} [modeOptions] + * @returns {Partial} + */ +const COMMENT = function(begin, end, modeOptions = {}) { + const mode = inherit$1( + { + scope: 'comment', + begin, + end, + contains: [] + }, + modeOptions + ); + mode.contains.push({ + scope: 'doctag', + // hack to avoid the space from being included. the space is necessary to + // match here to prevent the plain text rule below from gobbling up doctags + begin: '[ ]*(?=(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):)', + end: /(TODO|FIXME|NOTE|BUG|OPTIMIZE|HACK|XXX):/, + excludeBegin: true, + relevance: 0 + }); + const ENGLISH_WORD = either( + // list of common 1 and 2 letter words in English + "I", + "a", + "is", + "so", + "us", + "to", + "at", + "if", + "in", + "it", + "on", + // note: this is not an exhaustive list of contractions, just popular ones + /[A-Za-z]+['](d|ve|re|ll|t|s|n)/, // contractions - can't we'd they're let's, etc + /[A-Za-z]+[-][a-z]+/, // `no-way`, etc. + /[A-Za-z][a-z]{2,}/ // allow capitalized words at beginning of sentences + ); + // looking like plain text, more likely to be a comment + mode.contains.push( + { + // TODO: how to include ", (, ) without breaking grammars that use these for + // comment delimiters? + // begin: /[ ]+([()"]?([A-Za-z'-]{3,}|is|a|I|so|us|[tT][oO]|at|if|in|it|on)[.]?[()":]?([.][ ]|[ ]|\))){3}/ + // --- + + // this tries to find sequences of 3 english words in a row (without any + // "programming" type syntax) this gives us a strong signal that we've + // TRULY found a comment - vs perhaps scanning with the wrong language. + // It's possible to find something that LOOKS like the start of the + // comment - but then if there is no readable text - good chance it is a + // false match and not a comment. + // + // for a visual example please see: + // https://github.com/highlightjs/highlight.js/issues/2827 + + begin: concat( + /[ ]+/, // necessary to prevent us gobbling up doctags like /* @author Bob Mcgill */ + '(', + ENGLISH_WORD, + /[.]?[:]?([.][ ]|[ ])/, + '){3}') // look for 3 words in a row + } + ); + return mode; +}; +const C_LINE_COMMENT_MODE = COMMENT('//', '$'); +const C_BLOCK_COMMENT_MODE = COMMENT('/\\*', '\\*/'); +const HASH_COMMENT_MODE = COMMENT('#', '$'); +const NUMBER_MODE = { + scope: 'number', + begin: NUMBER_RE, + relevance: 0 +}; +const C_NUMBER_MODE = { + scope: 'number', + begin: C_NUMBER_RE, + relevance: 0 +}; +const BINARY_NUMBER_MODE = { + scope: 'number', + begin: BINARY_NUMBER_RE, + relevance: 0 +}; +const REGEXP_MODE = { + scope: "regexp", + begin: /\/(?=[^/\n]*\/)/, + end: /\/[gimuy]*/, + contains: [ + BACKSLASH_ESCAPE, + { + begin: /\[/, + end: /\]/, + relevance: 0, + contains: [BACKSLASH_ESCAPE] + } + ] +}; +const TITLE_MODE = { + scope: 'title', + begin: IDENT_RE, + relevance: 0 +}; +const UNDERSCORE_TITLE_MODE = { + scope: 'title', + begin: UNDERSCORE_IDENT_RE, + relevance: 0 +}; +const METHOD_GUARD = { + // excludes method names from keyword processing + begin: '\\.\\s*' + UNDERSCORE_IDENT_RE, + relevance: 0 +}; + +/** + * Adds end same as begin mechanics to a mode + * + * Your mode must include at least a single () match group as that first match + * group is what is used for comparison + * @param {Partial} mode + */ +const END_SAME_AS_BEGIN = function(mode) { + return Object.assign(mode, + { + /** @type {ModeCallback} */ + 'on:begin': (m, resp) => { resp.data._beginMatch = m[1]; }, + /** @type {ModeCallback} */ + 'on:end': (m, resp) => { if (resp.data._beginMatch !== m[1]) resp.ignoreMatch(); } + }); +}; + +var MODES = /*#__PURE__*/Object.freeze({ + __proto__: null, + APOS_STRING_MODE: APOS_STRING_MODE, + BACKSLASH_ESCAPE: BACKSLASH_ESCAPE, + BINARY_NUMBER_MODE: BINARY_NUMBER_MODE, + BINARY_NUMBER_RE: BINARY_NUMBER_RE, + COMMENT: COMMENT, + C_BLOCK_COMMENT_MODE: C_BLOCK_COMMENT_MODE, + C_LINE_COMMENT_MODE: C_LINE_COMMENT_MODE, + C_NUMBER_MODE: C_NUMBER_MODE, + C_NUMBER_RE: C_NUMBER_RE, + END_SAME_AS_BEGIN: END_SAME_AS_BEGIN, + HASH_COMMENT_MODE: HASH_COMMENT_MODE, + IDENT_RE: IDENT_RE, + MATCH_NOTHING_RE: MATCH_NOTHING_RE, + METHOD_GUARD: METHOD_GUARD, + NUMBER_MODE: NUMBER_MODE, + NUMBER_RE: NUMBER_RE, + PHRASAL_WORDS_MODE: PHRASAL_WORDS_MODE, + QUOTE_STRING_MODE: QUOTE_STRING_MODE, + REGEXP_MODE: REGEXP_MODE, + RE_STARTERS_RE: RE_STARTERS_RE, + SHEBANG: SHEBANG, + TITLE_MODE: TITLE_MODE, + UNDERSCORE_IDENT_RE: UNDERSCORE_IDENT_RE, + UNDERSCORE_TITLE_MODE: UNDERSCORE_TITLE_MODE +}); + +/** +@typedef {import('highlight.js').CallbackResponse} CallbackResponse +@typedef {import('highlight.js').CompilerExt} CompilerExt +*/ + +// Grammar extensions / plugins +// See: https://github.com/highlightjs/highlight.js/issues/2833 + +// Grammar extensions allow "syntactic sugar" to be added to the grammar modes +// without requiring any underlying changes to the compiler internals. + +// `compileMatch` being the perfect small example of now allowing a grammar +// author to write `match` when they desire to match a single expression rather +// than being forced to use `begin`. The extension then just moves `match` into +// `begin` when it runs. Ie, no features have been added, but we've just made +// the experience of writing (and reading grammars) a little bit nicer. + +// ------ + +// TODO: We need negative look-behind support to do this properly +/** + * Skip a match if it has a preceding dot + * + * This is used for `beginKeywords` to prevent matching expressions such as + * `bob.keyword.do()`. The mode compiler automatically wires this up as a + * special _internal_ 'on:begin' callback for modes with `beginKeywords` + * @param {RegExpMatchArray} match + * @param {CallbackResponse} response + */ +function skipIfHasPrecedingDot(match, response) { + const before = match.input[match.index - 1]; + if (before === ".") { + response.ignoreMatch(); + } +} + +/** + * + * @type {CompilerExt} + */ +function scopeClassName(mode, _parent) { + // eslint-disable-next-line no-undefined + if (mode.className !== undefined) { + mode.scope = mode.className; + delete mode.className; + } +} + +/** + * `beginKeywords` syntactic sugar + * @type {CompilerExt} + */ +function beginKeywords(mode, parent) { + if (!parent) return; + if (!mode.beginKeywords) return; + + // for languages with keywords that include non-word characters checking for + // a word boundary is not sufficient, so instead we check for a word boundary + // or whitespace - this does no harm in any case since our keyword engine + // doesn't allow spaces in keywords anyways and we still check for the boundary + // first + mode.begin = '\\b(' + mode.beginKeywords.split(' ').join('|') + ')(?!\\.)(?=\\b|\\s)'; + mode.__beforeBegin = skipIfHasPrecedingDot; + mode.keywords = mode.keywords || mode.beginKeywords; + delete mode.beginKeywords; + + // prevents double relevance, the keywords themselves provide + // relevance, the mode doesn't need to double it + // eslint-disable-next-line no-undefined + if (mode.relevance === undefined) mode.relevance = 0; +} + +/** + * Allow `illegal` to contain an array of illegal values + * @type {CompilerExt} + */ +function compileIllegal(mode, _parent) { + if (!Array.isArray(mode.illegal)) return; + + mode.illegal = either(...mode.illegal); +} + +/** + * `match` to match a single expression for readability + * @type {CompilerExt} + */ +function compileMatch(mode, _parent) { + if (!mode.match) return; + if (mode.begin || mode.end) throw new Error("begin & end are not supported with match"); + + mode.begin = mode.match; + delete mode.match; +} + +/** + * provides the default 1 relevance to all modes + * @type {CompilerExt} + */ +function compileRelevance(mode, _parent) { + // eslint-disable-next-line no-undefined + if (mode.relevance === undefined) mode.relevance = 1; +} + +// allow beforeMatch to act as a "qualifier" for the match +// the full match begin must be [beforeMatch][begin] +const beforeMatchExt = (mode, parent) => { + if (!mode.beforeMatch) return; + // starts conflicts with endsParent which we need to make sure the child + // rule is not matched multiple times + if (mode.starts) throw new Error("beforeMatch cannot be used with starts"); + + const originalMode = Object.assign({}, mode); + Object.keys(mode).forEach((key) => { delete mode[key]; }); + + mode.keywords = originalMode.keywords; + mode.begin = concat(originalMode.beforeMatch, lookahead(originalMode.begin)); + mode.starts = { + relevance: 0, + contains: [ + Object.assign(originalMode, { endsParent: true }) + ] + }; + mode.relevance = 0; + + delete originalMode.beforeMatch; +}; + +// keywords that should have no default relevance value +const COMMON_KEYWORDS = [ + 'of', + 'and', + 'for', + 'in', + 'not', + 'or', + 'if', + 'then', + 'parent', // common variable name + 'list', // common variable name + 'value' // common variable name +]; + +const DEFAULT_KEYWORD_SCOPE = "keyword"; + +/** + * Given raw keywords from a language definition, compile them. + * + * @param {string | Record | Array} rawKeywords + * @param {boolean} caseInsensitive + */ +function compileKeywords(rawKeywords, caseInsensitive, scopeName = DEFAULT_KEYWORD_SCOPE) { + /** @type {import("highlight.js/private").KeywordDict} */ + const compiledKeywords = Object.create(null); + + // input can be a string of keywords, an array of keywords, or a object with + // named keys representing scopeName (which can then point to a string or array) + if (typeof rawKeywords === 'string') { + compileList(scopeName, rawKeywords.split(" ")); + } else if (Array.isArray(rawKeywords)) { + compileList(scopeName, rawKeywords); + } else { + Object.keys(rawKeywords).forEach(function(scopeName) { + // collapse all our objects back into the parent object + Object.assign( + compiledKeywords, + compileKeywords(rawKeywords[scopeName], caseInsensitive, scopeName) + ); + }); + } + return compiledKeywords; + + // --- + + /** + * Compiles an individual list of keywords + * + * Ex: "for if when while|5" + * + * @param {string} scopeName + * @param {Array} keywordList + */ + function compileList(scopeName, keywordList) { + if (caseInsensitive) { + keywordList = keywordList.map(x => x.toLowerCase()); + } + keywordList.forEach(function(keyword) { + const pair = keyword.split('|'); + compiledKeywords[pair[0]] = [scopeName, scoreForKeyword(pair[0], pair[1])]; + }); + } +} + +/** + * Returns the proper score for a given keyword + * + * Also takes into account comment keywords, which will be scored 0 UNLESS + * another score has been manually assigned. + * @param {string} keyword + * @param {string} [providedScore] + */ +function scoreForKeyword(keyword, providedScore) { + // manual scores always win over common keywords + // so you can force a score of 1 if you really insist + if (providedScore) { + return Number(providedScore); + } + + return commonKeyword(keyword) ? 0 : 1; +} + +/** + * Determines if a given keyword is common or not + * + * @param {string} keyword */ +function commonKeyword(keyword) { + return COMMON_KEYWORDS.includes(keyword.toLowerCase()); +} + +/* + +For the reasoning behind this please see: +https://github.com/highlightjs/highlight.js/issues/2880#issuecomment-747275419 + +*/ + +/** + * @type {Record} + */ +const seenDeprecations = {}; + +/** + * @param {string} message + */ +const error = (message) => { + console.error(message); +}; + +/** + * @param {string} message + * @param {any} args + */ +const warn = (message, ...args) => { + console.log(`WARN: ${message}`, ...args); +}; + +/** + * @param {string} version + * @param {string} message + */ +const deprecated = (version, message) => { + if (seenDeprecations[`${version}/${message}`]) return; + + console.log(`Deprecated as of ${version}. ${message}`); + seenDeprecations[`${version}/${message}`] = true; +}; + +/* eslint-disable no-throw-literal */ + +/** +@typedef {import('highlight.js').CompiledMode} CompiledMode +*/ + +const MultiClassError = new Error(); + +/** + * Renumbers labeled scope names to account for additional inner match + * groups that otherwise would break everything. + * + * Lets say we 3 match scopes: + * + * { 1 => ..., 2 => ..., 3 => ... } + * + * So what we need is a clean match like this: + * + * (a)(b)(c) => [ "a", "b", "c" ] + * + * But this falls apart with inner match groups: + * + * (a)(((b)))(c) => ["a", "b", "b", "b", "c" ] + * + * Our scopes are now "out of alignment" and we're repeating `b` 3 times. + * What needs to happen is the numbers are remapped: + * + * { 1 => ..., 2 => ..., 5 => ... } + * + * We also need to know that the ONLY groups that should be output + * are 1, 2, and 5. This function handles this behavior. + * + * @param {CompiledMode} mode + * @param {Array} regexes + * @param {{key: "beginScope"|"endScope"}} opts + */ +function remapScopeNames(mode, regexes, { key }) { + let offset = 0; + const scopeNames = mode[key]; + /** @type Record */ + const emit = {}; + /** @type Record */ + const positions = {}; + + for (let i = 1; i <= regexes.length; i++) { + positions[i + offset] = scopeNames[i]; + emit[i + offset] = true; + offset += countMatchGroups(regexes[i - 1]); + } + // we use _emit to keep track of which match groups are "top-level" to avoid double + // output from inside match groups + mode[key] = positions; + mode[key]._emit = emit; + mode[key]._multi = true; +} + +/** + * @param {CompiledMode} mode + */ +function beginMultiClass(mode) { + if (!Array.isArray(mode.begin)) return; + + if (mode.skip || mode.excludeBegin || mode.returnBegin) { + error("skip, excludeBegin, returnBegin not compatible with beginScope: {}"); + throw MultiClassError; + } + + if (typeof mode.beginScope !== "object" || mode.beginScope === null) { + error("beginScope must be object"); + throw MultiClassError; + } + + remapScopeNames(mode, mode.begin, { key: "beginScope" }); + mode.begin = _rewriteBackreferences(mode.begin, { joinWith: "" }); +} + +/** + * @param {CompiledMode} mode + */ +function endMultiClass(mode) { + if (!Array.isArray(mode.end)) return; + + if (mode.skip || mode.excludeEnd || mode.returnEnd) { + error("skip, excludeEnd, returnEnd not compatible with endScope: {}"); + throw MultiClassError; + } + + if (typeof mode.endScope !== "object" || mode.endScope === null) { + error("endScope must be object"); + throw MultiClassError; + } + + remapScopeNames(mode, mode.end, { key: "endScope" }); + mode.end = _rewriteBackreferences(mode.end, { joinWith: "" }); +} + +/** + * this exists only to allow `scope: {}` to be used beside `match:` + * Otherwise `beginScope` would necessary and that would look weird + + { + match: [ /def/, /\w+/ ] + scope: { 1: "keyword" , 2: "title" } + } + + * @param {CompiledMode} mode + */ +function scopeSugar(mode) { + if (mode.scope && typeof mode.scope === "object" && mode.scope !== null) { + mode.beginScope = mode.scope; + delete mode.scope; + } +} + +/** + * @param {CompiledMode} mode + */ +function MultiClass(mode) { + scopeSugar(mode); + + if (typeof mode.beginScope === "string") { + mode.beginScope = { _wrap: mode.beginScope }; + } + if (typeof mode.endScope === "string") { + mode.endScope = { _wrap: mode.endScope }; + } + + beginMultiClass(mode); + endMultiClass(mode); +} + +/** +@typedef {import('highlight.js').Mode} Mode +@typedef {import('highlight.js').CompiledMode} CompiledMode +@typedef {import('highlight.js').Language} Language +@typedef {import('highlight.js').HLJSPlugin} HLJSPlugin +@typedef {import('highlight.js').CompiledLanguage} CompiledLanguage +*/ + +// compilation + +/** + * Compiles a language definition result + * + * Given the raw result of a language definition (Language), compiles this so + * that it is ready for highlighting code. + * @param {Language} language + * @returns {CompiledLanguage} + */ +function compileLanguage(language) { + /** + * Builds a regex with the case sensitivity of the current language + * + * @param {RegExp | string} value + * @param {boolean} [global] + */ + function langRe(value, global) { + return new RegExp( + source(value), + 'm' + + (language.case_insensitive ? 'i' : '') + + (language.unicodeRegex ? 'u' : '') + + (global ? 'g' : '') + ); + } + + /** + Stores multiple regular expressions and allows you to quickly search for + them all in a string simultaneously - returning the first match. It does + this by creating a huge (a|b|c) regex - each individual item wrapped with () + and joined by `|` - using match groups to track position. When a match is + found checking which position in the array has content allows us to figure + out which of the original regexes / match groups triggered the match. + + The match object itself (the result of `Regex.exec`) is returned but also + enhanced by merging in any meta-data that was registered with the regex. + This is how we keep track of which mode matched, and what type of rule + (`illegal`, `begin`, end, etc). + */ + class MultiRegex { + constructor() { + this.matchIndexes = {}; + // @ts-ignore + this.regexes = []; + this.matchAt = 1; + this.position = 0; + } + + // @ts-ignore + addRule(re, opts) { + opts.position = this.position++; + // @ts-ignore + this.matchIndexes[this.matchAt] = opts; + this.regexes.push([opts, re]); + this.matchAt += countMatchGroups(re) + 1; + } + + compile() { + if (this.regexes.length === 0) { + // avoids the need to check length every time exec is called + // @ts-ignore + this.exec = () => null; + } + const terminators = this.regexes.map(el => el[1]); + this.matcherRe = langRe(_rewriteBackreferences(terminators, { joinWith: '|' }), true); + this.lastIndex = 0; + } + + /** @param {string} s */ + exec(s) { + this.matcherRe.lastIndex = this.lastIndex; + const match = this.matcherRe.exec(s); + if (!match) { return null; } + + // eslint-disable-next-line no-undefined + const i = match.findIndex((el, i) => i > 0 && el !== undefined); + // @ts-ignore + const matchData = this.matchIndexes[i]; + // trim off any earlier non-relevant match groups (ie, the other regex + // match groups that make up the multi-matcher) + match.splice(0, i); + + return Object.assign(match, matchData); + } + } + + /* + Created to solve the key deficiently with MultiRegex - there is no way to + test for multiple matches at a single location. Why would we need to do + that? In the future a more dynamic engine will allow certain matches to be + ignored. An example: if we matched say the 3rd regex in a large group but + decided to ignore it - we'd need to started testing again at the 4th + regex... but MultiRegex itself gives us no real way to do that. + + So what this class creates MultiRegexs on the fly for whatever search + position they are needed. + + NOTE: These additional MultiRegex objects are created dynamically. For most + grammars most of the time we will never actually need anything more than the + first MultiRegex - so this shouldn't have too much overhead. + + Say this is our search group, and we match regex3, but wish to ignore it. + + regex1 | regex2 | regex3 | regex4 | regex5 ' ie, startAt = 0 + + What we need is a new MultiRegex that only includes the remaining + possibilities: + + regex4 | regex5 ' ie, startAt = 3 + + This class wraps all that complexity up in a simple API... `startAt` decides + where in the array of expressions to start doing the matching. It + auto-increments, so if a match is found at position 2, then startAt will be + set to 3. If the end is reached startAt will return to 0. + + MOST of the time the parser will be setting startAt manually to 0. + */ + class ResumableMultiRegex { + constructor() { + // @ts-ignore + this.rules = []; + // @ts-ignore + this.multiRegexes = []; + this.count = 0; + + this.lastIndex = 0; + this.regexIndex = 0; + } + + // @ts-ignore + getMatcher(index) { + if (this.multiRegexes[index]) return this.multiRegexes[index]; + + const matcher = new MultiRegex(); + this.rules.slice(index).forEach(([re, opts]) => matcher.addRule(re, opts)); + matcher.compile(); + this.multiRegexes[index] = matcher; + return matcher; + } + + resumingScanAtSamePosition() { + return this.regexIndex !== 0; + } + + considerAll() { + this.regexIndex = 0; + } + + // @ts-ignore + addRule(re, opts) { + this.rules.push([re, opts]); + if (opts.type === "begin") this.count++; + } + + /** @param {string} s */ + exec(s) { + const m = this.getMatcher(this.regexIndex); + m.lastIndex = this.lastIndex; + let result = m.exec(s); + + // The following is because we have no easy way to say "resume scanning at the + // existing position but also skip the current rule ONLY". What happens is + // all prior rules are also skipped which can result in matching the wrong + // thing. Example of matching "booger": + + // our matcher is [string, "booger", number] + // + // ....booger.... + + // if "booger" is ignored then we'd really need a regex to scan from the + // SAME position for only: [string, number] but ignoring "booger" (if it + // was the first match), a simple resume would scan ahead who knows how + // far looking only for "number", ignoring potential string matches (or + // future "booger" matches that might be valid.) + + // So what we do: We execute two matchers, one resuming at the same + // position, but the second full matcher starting at the position after: + + // /--- resume first regex match here (for [number]) + // |/---- full match here for [string, "booger", number] + // vv + // ....booger.... + + // Which ever results in a match first is then used. So this 3-4 step + // process essentially allows us to say "match at this position, excluding + // a prior rule that was ignored". + // + // 1. Match "booger" first, ignore. Also proves that [string] does non match. + // 2. Resume matching for [number] + // 3. Match at index + 1 for [string, "booger", number] + // 4. If #2 and #3 result in matches, which came first? + if (this.resumingScanAtSamePosition()) { + if (result && result.index === this.lastIndex) ; else { // use the second matcher result + const m2 = this.getMatcher(0); + m2.lastIndex = this.lastIndex + 1; + result = m2.exec(s); + } + } + + if (result) { + this.regexIndex += result.position + 1; + if (this.regexIndex === this.count) { + // wrap-around to considering all matches again + this.considerAll(); + } + } + + return result; + } + } + + /** + * Given a mode, builds a huge ResumableMultiRegex that can be used to walk + * the content and find matches. + * + * @param {CompiledMode} mode + * @returns {ResumableMultiRegex} + */ + function buildModeRegex(mode) { + const mm = new ResumableMultiRegex(); + + mode.contains.forEach(term => mm.addRule(term.begin, { rule: term, type: "begin" })); + + if (mode.terminatorEnd) { + mm.addRule(mode.terminatorEnd, { type: "end" }); + } + if (mode.illegal) { + mm.addRule(mode.illegal, { type: "illegal" }); + } + + return mm; + } + + /** skip vs abort vs ignore + * + * @skip - The mode is still entered and exited normally (and contains rules apply), + * but all content is held and added to the parent buffer rather than being + * output when the mode ends. Mostly used with `sublanguage` to build up + * a single large buffer than can be parsed by sublanguage. + * + * - The mode begin ands ends normally. + * - Content matched is added to the parent mode buffer. + * - The parser cursor is moved forward normally. + * + * @abort - A hack placeholder until we have ignore. Aborts the mode (as if it + * never matched) but DOES NOT continue to match subsequent `contains` + * modes. Abort is bad/suboptimal because it can result in modes + * farther down not getting applied because an earlier rule eats the + * content but then aborts. + * + * - The mode does not begin. + * - Content matched by `begin` is added to the mode buffer. + * - The parser cursor is moved forward accordingly. + * + * @ignore - Ignores the mode (as if it never matched) and continues to match any + * subsequent `contains` modes. Ignore isn't technically possible with + * the current parser implementation. + * + * - The mode does not begin. + * - Content matched by `begin` is ignored. + * - The parser cursor is not moved forward. + */ + + /** + * Compiles an individual mode + * + * This can raise an error if the mode contains certain detectable known logic + * issues. + * @param {Mode} mode + * @param {CompiledMode | null} [parent] + * @returns {CompiledMode | never} + */ + function compileMode(mode, parent) { + const cmode = /** @type CompiledMode */ (mode); + if (mode.isCompiled) return cmode; + + [ + scopeClassName, + // do this early so compiler extensions generally don't have to worry about + // the distinction between match/begin + compileMatch, + MultiClass, + beforeMatchExt + ].forEach(ext => ext(mode, parent)); + + language.compilerExtensions.forEach(ext => ext(mode, parent)); + + // __beforeBegin is considered private API, internal use only + mode.__beforeBegin = null; + + [ + beginKeywords, + // do this later so compiler extensions that come earlier have access to the + // raw array if they wanted to perhaps manipulate it, etc. + compileIllegal, + // default to 1 relevance if not specified + compileRelevance + ].forEach(ext => ext(mode, parent)); + + mode.isCompiled = true; + + let keywordPattern = null; + if (typeof mode.keywords === "object" && mode.keywords.$pattern) { + // we need a copy because keywords might be compiled multiple times + // so we can't go deleting $pattern from the original on the first + // pass + mode.keywords = Object.assign({}, mode.keywords); + keywordPattern = mode.keywords.$pattern; + delete mode.keywords.$pattern; + } + keywordPattern = keywordPattern || /\w+/; + + if (mode.keywords) { + mode.keywords = compileKeywords(mode.keywords, language.case_insensitive); + } + + cmode.keywordPatternRe = langRe(keywordPattern, true); + + if (parent) { + if (!mode.begin) mode.begin = /\B|\b/; + cmode.beginRe = langRe(cmode.begin); + if (!mode.end && !mode.endsWithParent) mode.end = /\B|\b/; + if (mode.end) cmode.endRe = langRe(cmode.end); + cmode.terminatorEnd = source(cmode.end) || ''; + if (mode.endsWithParent && parent.terminatorEnd) { + cmode.terminatorEnd += (mode.end ? '|' : '') + parent.terminatorEnd; + } + } + if (mode.illegal) cmode.illegalRe = langRe(/** @type {RegExp | string} */ (mode.illegal)); + if (!mode.contains) mode.contains = []; + + mode.contains = [].concat(...mode.contains.map(function(c) { + return expandOrCloneMode(c === 'self' ? mode : c); + })); + mode.contains.forEach(function(c) { compileMode(/** @type Mode */ (c), cmode); }); + + if (mode.starts) { + compileMode(mode.starts, parent); + } + + cmode.matcher = buildModeRegex(cmode); + return cmode; + } + + if (!language.compilerExtensions) language.compilerExtensions = []; + + // self is not valid at the top-level + if (language.contains && language.contains.includes('self')) { + throw new Error("ERR: contains `self` is not supported at the top-level of a language. See documentation."); + } + + // we need a null object, which inherit will guarantee + language.classNameAliases = inherit$1(language.classNameAliases || {}); + + return compileMode(/** @type Mode */ (language)); +} + +/** + * Determines if a mode has a dependency on it's parent or not + * + * If a mode does have a parent dependency then often we need to clone it if + * it's used in multiple places so that each copy points to the correct parent, + * where-as modes without a parent can often safely be re-used at the bottom of + * a mode chain. + * + * @param {Mode | null} mode + * @returns {boolean} - is there a dependency on the parent? + * */ +function dependencyOnParent(mode) { + if (!mode) return false; + + return mode.endsWithParent || dependencyOnParent(mode.starts); +} + +/** + * Expands a mode or clones it if necessary + * + * This is necessary for modes with parental dependenceis (see notes on + * `dependencyOnParent`) and for nodes that have `variants` - which must then be + * exploded into their own individual modes at compile time. + * + * @param {Mode} mode + * @returns {Mode | Mode[]} + * */ +function expandOrCloneMode(mode) { + if (mode.variants && !mode.cachedVariants) { + mode.cachedVariants = mode.variants.map(function(variant) { + return inherit$1(mode, { variants: null }, variant); + }); + } + + // EXPAND + // if we have variants then essentially "replace" the mode with the variants + // this happens in compileMode, where this function is called from + if (mode.cachedVariants) { + return mode.cachedVariants; + } + + // CLONE + // if we have dependencies on parents then we need a unique + // instance of ourselves, so we can be reused with many + // different parents without issue + if (dependencyOnParent(mode)) { + return inherit$1(mode, { starts: mode.starts ? inherit$1(mode.starts) : null }); + } + + if (Object.isFrozen(mode)) { + return inherit$1(mode); + } + + // no special dependency issues, just return ourselves + return mode; +} + +var version = "11.9.0"; + +class HTMLInjectionError extends Error { + constructor(reason, html) { + super(reason); + this.name = "HTMLInjectionError"; + this.html = html; + } +} + +/* +Syntax highlighting with language autodetection. +https://highlightjs.org/ +*/ + + + +/** +@typedef {import('highlight.js').Mode} Mode +@typedef {import('highlight.js').CompiledMode} CompiledMode +@typedef {import('highlight.js').CompiledScope} CompiledScope +@typedef {import('highlight.js').Language} Language +@typedef {import('highlight.js').HLJSApi} HLJSApi +@typedef {import('highlight.js').HLJSPlugin} HLJSPlugin +@typedef {import('highlight.js').PluginEvent} PluginEvent +@typedef {import('highlight.js').HLJSOptions} HLJSOptions +@typedef {import('highlight.js').LanguageFn} LanguageFn +@typedef {import('highlight.js').HighlightedHTMLElement} HighlightedHTMLElement +@typedef {import('highlight.js').BeforeHighlightContext} BeforeHighlightContext +@typedef {import('highlight.js/private').MatchType} MatchType +@typedef {import('highlight.js/private').KeywordData} KeywordData +@typedef {import('highlight.js/private').EnhancedMatch} EnhancedMatch +@typedef {import('highlight.js/private').AnnotatedError} AnnotatedError +@typedef {import('highlight.js').AutoHighlightResult} AutoHighlightResult +@typedef {import('highlight.js').HighlightOptions} HighlightOptions +@typedef {import('highlight.js').HighlightResult} HighlightResult +*/ + + +const escape = escapeHTML; +const inherit = inherit$1; +const NO_MATCH = Symbol("nomatch"); +const MAX_KEYWORD_HITS = 7; + +/** + * @param {any} hljs - object that is extended (legacy) + * @returns {HLJSApi} + */ +const HLJS = function(hljs) { + // Global internal variables used within the highlight.js library. + /** @type {Record} */ + const languages = Object.create(null); + /** @type {Record} */ + const aliases = Object.create(null); + /** @type {HLJSPlugin[]} */ + const plugins = []; + + // safe/production mode - swallows more errors, tries to keep running + // even if a single syntax or parse hits a fatal error + let SAFE_MODE = true; + const LANGUAGE_NOT_FOUND = "Could not find the language '{}', did you forget to load/include a language module?"; + /** @type {Language} */ + const PLAINTEXT_LANGUAGE = { disableAutodetect: true, name: 'Plain text', contains: [] }; + + // Global options used when within external APIs. This is modified when + // calling the `hljs.configure` function. + /** @type HLJSOptions */ + let options = { + ignoreUnescapedHTML: false, + throwUnescapedHTML: false, + noHighlightRe: /^(no-?highlight)$/i, + languageDetectRe: /\blang(?:uage)?-([\w-]+)\b/i, + classPrefix: 'hljs-', + cssSelector: 'pre code', + languages: null, + // beta configuration options, subject to change, welcome to discuss + // https://github.com/highlightjs/highlight.js/issues/1086 + __emitter: TokenTreeEmitter + }; + + /* Utility functions */ + + /** + * Tests a language name to see if highlighting should be skipped + * @param {string} languageName + */ + function shouldNotHighlight(languageName) { + return options.noHighlightRe.test(languageName); + } + + /** + * @param {HighlightedHTMLElement} block - the HTML element to determine language for + */ + function blockLanguage(block) { + let classes = block.className + ' '; + + classes += block.parentNode ? block.parentNode.className : ''; + + // language-* takes precedence over non-prefixed class names. + const match = options.languageDetectRe.exec(classes); + if (match) { + const language = getLanguage(match[1]); + if (!language) { + warn(LANGUAGE_NOT_FOUND.replace("{}", match[1])); + warn("Falling back to no-highlight mode for this block.", block); + } + return language ? match[1] : 'no-highlight'; + } + + return classes + .split(/\s+/) + .find((_class) => shouldNotHighlight(_class) || getLanguage(_class)); + } + + /** + * Core highlighting function. + * + * OLD API + * highlight(lang, code, ignoreIllegals, continuation) + * + * NEW API + * highlight(code, {lang, ignoreIllegals}) + * + * @param {string} codeOrLanguageName - the language to use for highlighting + * @param {string | HighlightOptions} optionsOrCode - the code to highlight + * @param {boolean} [ignoreIllegals] - whether to ignore illegal matches, default is to bail + * + * @returns {HighlightResult} Result - an object that represents the result + * @property {string} language - the language name + * @property {number} relevance - the relevance score + * @property {string} value - the highlighted HTML code + * @property {string} code - the original raw code + * @property {CompiledMode} top - top of the current mode stack + * @property {boolean} illegal - indicates whether any illegal matches were found + */ + function highlight(codeOrLanguageName, optionsOrCode, ignoreIllegals) { + let code = ""; + let languageName = ""; + if (typeof optionsOrCode === "object") { + code = codeOrLanguageName; + ignoreIllegals = optionsOrCode.ignoreIllegals; + languageName = optionsOrCode.language; + } else { + // old API + deprecated("10.7.0", "highlight(lang, code, ...args) has been deprecated."); + deprecated("10.7.0", "Please use highlight(code, options) instead.\nhttps://github.com/highlightjs/highlight.js/issues/2277"); + languageName = codeOrLanguageName; + code = optionsOrCode; + } + + // https://github.com/highlightjs/highlight.js/issues/3149 + // eslint-disable-next-line no-undefined + if (ignoreIllegals === undefined) { ignoreIllegals = true; } + + /** @type {BeforeHighlightContext} */ + const context = { + code, + language: languageName + }; + // the plugin can change the desired language or the code to be highlighted + // just be changing the object it was passed + fire("before:highlight", context); + + // a before plugin can usurp the result completely by providing it's own + // in which case we don't even need to call highlight + const result = context.result + ? context.result + : _highlight(context.language, context.code, ignoreIllegals); + + result.code = context.code; + // the plugin can change anything in result to suite it + fire("after:highlight", result); + + return result; + } + + /** + * private highlight that's used internally and does not fire callbacks + * + * @param {string} languageName - the language to use for highlighting + * @param {string} codeToHighlight - the code to highlight + * @param {boolean?} [ignoreIllegals] - whether to ignore illegal matches, default is to bail + * @param {CompiledMode?} [continuation] - current continuation mode, if any + * @returns {HighlightResult} - result of the highlight operation + */ + function _highlight(languageName, codeToHighlight, ignoreIllegals, continuation) { + const keywordHits = Object.create(null); + + /** + * Return keyword data if a match is a keyword + * @param {CompiledMode} mode - current mode + * @param {string} matchText - the textual match + * @returns {KeywordData | false} + */ + function keywordData(mode, matchText) { + return mode.keywords[matchText]; + } + + function processKeywords() { + if (!top.keywords) { + emitter.addText(modeBuffer); + return; + } + + let lastIndex = 0; + top.keywordPatternRe.lastIndex = 0; + let match = top.keywordPatternRe.exec(modeBuffer); + let buf = ""; + + while (match) { + buf += modeBuffer.substring(lastIndex, match.index); + const word = language.case_insensitive ? match[0].toLowerCase() : match[0]; + const data = keywordData(top, word); + if (data) { + const [kind, keywordRelevance] = data; + emitter.addText(buf); + buf = ""; + + keywordHits[word] = (keywordHits[word] || 0) + 1; + if (keywordHits[word] <= MAX_KEYWORD_HITS) relevance += keywordRelevance; + if (kind.startsWith("_")) { + // _ implied for relevance only, do not highlight + // by applying a class name + buf += match[0]; + } else { + const cssClass = language.classNameAliases[kind] || kind; + emitKeyword(match[0], cssClass); + } + } else { + buf += match[0]; + } + lastIndex = top.keywordPatternRe.lastIndex; + match = top.keywordPatternRe.exec(modeBuffer); + } + buf += modeBuffer.substring(lastIndex); + emitter.addText(buf); + } + + function processSubLanguage() { + if (modeBuffer === "") return; + /** @type HighlightResult */ + let result = null; + + if (typeof top.subLanguage === 'string') { + if (!languages[top.subLanguage]) { + emitter.addText(modeBuffer); + return; + } + result = _highlight(top.subLanguage, modeBuffer, true, continuations[top.subLanguage]); + continuations[top.subLanguage] = /** @type {CompiledMode} */ (result._top); + } else { + result = highlightAuto(modeBuffer, top.subLanguage.length ? top.subLanguage : null); + } + + // Counting embedded language score towards the host language may be disabled + // with zeroing the containing mode relevance. Use case in point is Markdown that + // allows XML everywhere and makes every XML snippet to have a much larger Markdown + // score. + if (top.relevance > 0) { + relevance += result.relevance; + } + emitter.__addSublanguage(result._emitter, result.language); + } + + function processBuffer() { + if (top.subLanguage != null) { + processSubLanguage(); + } else { + processKeywords(); + } + modeBuffer = ''; + } + + /** + * @param {string} text + * @param {string} scope + */ + function emitKeyword(keyword, scope) { + if (keyword === "") return; + + emitter.startScope(scope); + emitter.addText(keyword); + emitter.endScope(); + } + + /** + * @param {CompiledScope} scope + * @param {RegExpMatchArray} match + */ + function emitMultiClass(scope, match) { + let i = 1; + const max = match.length - 1; + while (i <= max) { + if (!scope._emit[i]) { i++; continue; } + const klass = language.classNameAliases[scope[i]] || scope[i]; + const text = match[i]; + if (klass) { + emitKeyword(text, klass); + } else { + modeBuffer = text; + processKeywords(); + modeBuffer = ""; + } + i++; + } + } + + /** + * @param {CompiledMode} mode - new mode to start + * @param {RegExpMatchArray} match + */ + function startNewMode(mode, match) { + if (mode.scope && typeof mode.scope === "string") { + emitter.openNode(language.classNameAliases[mode.scope] || mode.scope); + } + if (mode.beginScope) { + // beginScope just wraps the begin match itself in a scope + if (mode.beginScope._wrap) { + emitKeyword(modeBuffer, language.classNameAliases[mode.beginScope._wrap] || mode.beginScope._wrap); + modeBuffer = ""; + } else if (mode.beginScope._multi) { + // at this point modeBuffer should just be the match + emitMultiClass(mode.beginScope, match); + modeBuffer = ""; + } + } + + top = Object.create(mode, { parent: { value: top } }); + return top; + } + + /** + * @param {CompiledMode } mode - the mode to potentially end + * @param {RegExpMatchArray} match - the latest match + * @param {string} matchPlusRemainder - match plus remainder of content + * @returns {CompiledMode | void} - the next mode, or if void continue on in current mode + */ + function endOfMode(mode, match, matchPlusRemainder) { + let matched = startsWith(mode.endRe, matchPlusRemainder); + + if (matched) { + if (mode["on:end"]) { + const resp = new Response(mode); + mode["on:end"](match, resp); + if (resp.isMatchIgnored) matched = false; + } + + if (matched) { + while (mode.endsParent && mode.parent) { + mode = mode.parent; + } + return mode; + } + } + // even if on:end fires an `ignore` it's still possible + // that we might trigger the end node because of a parent mode + if (mode.endsWithParent) { + return endOfMode(mode.parent, match, matchPlusRemainder); + } + } + + /** + * Handle matching but then ignoring a sequence of text + * + * @param {string} lexeme - string containing full match text + */ + function doIgnore(lexeme) { + if (top.matcher.regexIndex === 0) { + // no more regexes to potentially match here, so we move the cursor forward one + // space + modeBuffer += lexeme[0]; + return 1; + } else { + // no need to move the cursor, we still have additional regexes to try and + // match at this very spot + resumeScanAtSamePosition = true; + return 0; + } + } + + /** + * Handle the start of a new potential mode match + * + * @param {EnhancedMatch} match - the current match + * @returns {number} how far to advance the parse cursor + */ + function doBeginMatch(match) { + const lexeme = match[0]; + const newMode = match.rule; + + const resp = new Response(newMode); + // first internal before callbacks, then the public ones + const beforeCallbacks = [newMode.__beforeBegin, newMode["on:begin"]]; + for (const cb of beforeCallbacks) { + if (!cb) continue; + cb(match, resp); + if (resp.isMatchIgnored) return doIgnore(lexeme); + } + + if (newMode.skip) { + modeBuffer += lexeme; + } else { + if (newMode.excludeBegin) { + modeBuffer += lexeme; + } + processBuffer(); + if (!newMode.returnBegin && !newMode.excludeBegin) { + modeBuffer = lexeme; + } + } + startNewMode(newMode, match); + return newMode.returnBegin ? 0 : lexeme.length; + } + + /** + * Handle the potential end of mode + * + * @param {RegExpMatchArray} match - the current match + */ + function doEndMatch(match) { + const lexeme = match[0]; + const matchPlusRemainder = codeToHighlight.substring(match.index); + + const endMode = endOfMode(top, match, matchPlusRemainder); + if (!endMode) { return NO_MATCH; } + + const origin = top; + if (top.endScope && top.endScope._wrap) { + processBuffer(); + emitKeyword(lexeme, top.endScope._wrap); + } else if (top.endScope && top.endScope._multi) { + processBuffer(); + emitMultiClass(top.endScope, match); + } else if (origin.skip) { + modeBuffer += lexeme; + } else { + if (!(origin.returnEnd || origin.excludeEnd)) { + modeBuffer += lexeme; + } + processBuffer(); + if (origin.excludeEnd) { + modeBuffer = lexeme; + } + } + do { + if (top.scope) { + emitter.closeNode(); + } + if (!top.skip && !top.subLanguage) { + relevance += top.relevance; + } + top = top.parent; + } while (top !== endMode.parent); + if (endMode.starts) { + startNewMode(endMode.starts, match); + } + return origin.returnEnd ? 0 : lexeme.length; + } + + function processContinuations() { + const list = []; + for (let current = top; current !== language; current = current.parent) { + if (current.scope) { + list.unshift(current.scope); + } + } + list.forEach(item => emitter.openNode(item)); + } + + /** @type {{type?: MatchType, index?: number, rule?: Mode}}} */ + let lastMatch = {}; + + /** + * Process an individual match + * + * @param {string} textBeforeMatch - text preceding the match (since the last match) + * @param {EnhancedMatch} [match] - the match itself + */ + function processLexeme(textBeforeMatch, match) { + const lexeme = match && match[0]; + + // add non-matched text to the current mode buffer + modeBuffer += textBeforeMatch; + + if (lexeme == null) { + processBuffer(); + return 0; + } + + // we've found a 0 width match and we're stuck, so we need to advance + // this happens when we have badly behaved rules that have optional matchers to the degree that + // sometimes they can end up matching nothing at all + // Ref: https://github.com/highlightjs/highlight.js/issues/2140 + if (lastMatch.type === "begin" && match.type === "end" && lastMatch.index === match.index && lexeme === "") { + // spit the "skipped" character that our regex choked on back into the output sequence + modeBuffer += codeToHighlight.slice(match.index, match.index + 1); + if (!SAFE_MODE) { + /** @type {AnnotatedError} */ + const err = new Error(`0 width match regex (${languageName})`); + err.languageName = languageName; + err.badRule = lastMatch.rule; + throw err; + } + return 1; + } + lastMatch = match; + + if (match.type === "begin") { + return doBeginMatch(match); + } else if (match.type === "illegal" && !ignoreIllegals) { + // illegal match, we do not continue processing + /** @type {AnnotatedError} */ + const err = new Error('Illegal lexeme "' + lexeme + '" for mode "' + (top.scope || '') + '"'); + err.mode = top; + throw err; + } else if (match.type === "end") { + const processed = doEndMatch(match); + if (processed !== NO_MATCH) { + return processed; + } + } + + // edge case for when illegal matches $ (end of line) which is technically + // a 0 width match but not a begin/end match so it's not caught by the + // first handler (when ignoreIllegals is true) + if (match.type === "illegal" && lexeme === "") { + // advance so we aren't stuck in an infinite loop + return 1; + } + + // infinite loops are BAD, this is a last ditch catch all. if we have a + // decent number of iterations yet our index (cursor position in our + // parsing) still 3x behind our index then something is very wrong + // so we bail + if (iterations > 100000 && iterations > match.index * 3) { + const err = new Error('potential infinite loop, way more iterations than matches'); + throw err; + } + + /* + Why might be find ourselves here? An potential end match that was + triggered but could not be completed. IE, `doEndMatch` returned NO_MATCH. + (this could be because a callback requests the match be ignored, etc) + + This causes no real harm other than stopping a few times too many. + */ + + modeBuffer += lexeme; + return lexeme.length; + } + + const language = getLanguage(languageName); + if (!language) { + error(LANGUAGE_NOT_FOUND.replace("{}", languageName)); + throw new Error('Unknown language: "' + languageName + '"'); + } + + const md = compileLanguage(language); + let result = ''; + /** @type {CompiledMode} */ + let top = continuation || md; + /** @type Record */ + const continuations = {}; // keep continuations for sub-languages + const emitter = new options.__emitter(options); + processContinuations(); + let modeBuffer = ''; + let relevance = 0; + let index = 0; + let iterations = 0; + let resumeScanAtSamePosition = false; + + try { + if (!language.__emitTokens) { + top.matcher.considerAll(); + + for (;;) { + iterations++; + if (resumeScanAtSamePosition) { + // only regexes not matched previously will now be + // considered for a potential match + resumeScanAtSamePosition = false; + } else { + top.matcher.considerAll(); + } + top.matcher.lastIndex = index; + + const match = top.matcher.exec(codeToHighlight); + // console.log("match", match[0], match.rule && match.rule.begin) + + if (!match) break; + + const beforeMatch = codeToHighlight.substring(index, match.index); + const processedCount = processLexeme(beforeMatch, match); + index = match.index + processedCount; + } + processLexeme(codeToHighlight.substring(index)); + } else { + language.__emitTokens(codeToHighlight, emitter); + } + + emitter.finalize(); + result = emitter.toHTML(); + + return { + language: languageName, + value: result, + relevance, + illegal: false, + _emitter: emitter, + _top: top + }; + } catch (err) { + if (err.message && err.message.includes('Illegal')) { + return { + language: languageName, + value: escape(codeToHighlight), + illegal: true, + relevance: 0, + _illegalBy: { + message: err.message, + index, + context: codeToHighlight.slice(index - 100, index + 100), + mode: err.mode, + resultSoFar: result + }, + _emitter: emitter + }; + } else if (SAFE_MODE) { + return { + language: languageName, + value: escape(codeToHighlight), + illegal: false, + relevance: 0, + errorRaised: err, + _emitter: emitter, + _top: top + }; + } else { + throw err; + } + } + } + + /** + * returns a valid highlight result, without actually doing any actual work, + * auto highlight starts with this and it's possible for small snippets that + * auto-detection may not find a better match + * @param {string} code + * @returns {HighlightResult} + */ + function justTextHighlightResult(code) { + const result = { + value: escape(code), + illegal: false, + relevance: 0, + _top: PLAINTEXT_LANGUAGE, + _emitter: new options.__emitter(options) + }; + result._emitter.addText(code); + return result; + } + + /** + Highlighting with language detection. Accepts a string with the code to + highlight. Returns an object with the following properties: + + - language (detected language) + - relevance (int) + - value (an HTML string with highlighting markup) + - secondBest (object with the same structure for second-best heuristically + detected language, may be absent) + + @param {string} code + @param {Array} [languageSubset] + @returns {AutoHighlightResult} + */ + function highlightAuto(code, languageSubset) { + languageSubset = languageSubset || options.languages || Object.keys(languages); + const plaintext = justTextHighlightResult(code); + + const results = languageSubset.filter(getLanguage).filter(autoDetection).map(name => + _highlight(name, code, false) + ); + results.unshift(plaintext); // plaintext is always an option + + const sorted = results.sort((a, b) => { + // sort base on relevance + if (a.relevance !== b.relevance) return b.relevance - a.relevance; + + // always award the tie to the base language + // ie if C++ and Arduino are tied, it's more likely to be C++ + if (a.language && b.language) { + if (getLanguage(a.language).supersetOf === b.language) { + return 1; + } else if (getLanguage(b.language).supersetOf === a.language) { + return -1; + } + } + + // otherwise say they are equal, which has the effect of sorting on + // relevance while preserving the original ordering - which is how ties + // have historically been settled, ie the language that comes first always + // wins in the case of a tie + return 0; + }); + + const [best, secondBest] = sorted; + + /** @type {AutoHighlightResult} */ + const result = best; + result.secondBest = secondBest; + + return result; + } + + /** + * Builds new class name for block given the language name + * + * @param {HTMLElement} element + * @param {string} [currentLang] + * @param {string} [resultLang] + */ + function updateClassName(element, currentLang, resultLang) { + const language = (currentLang && aliases[currentLang]) || resultLang; + + element.classList.add("hljs"); + element.classList.add(`language-${language}`); + } + + /** + * Applies highlighting to a DOM node containing code. + * + * @param {HighlightedHTMLElement} element - the HTML element to highlight + */ + function highlightElement(element) { + /** @type HTMLElement */ + let node = null; + const language = blockLanguage(element); + + if (shouldNotHighlight(language)) return; + + fire("before:highlightElement", + { el: element, language }); + + if (element.dataset.highlighted) { + console.log("Element previously highlighted. To highlight again, first unset `dataset.highlighted`.", element); + return; + } + + // we should be all text, no child nodes (unescaped HTML) - this is possibly + // an HTML injection attack - it's likely too late if this is already in + // production (the code has likely already done its damage by the time + // we're seeing it)... but we yell loudly about this so that hopefully it's + // more likely to be caught in development before making it to production + if (element.children.length > 0) { + if (!options.ignoreUnescapedHTML) { + console.warn("One of your code blocks includes unescaped HTML. This is a potentially serious security risk."); + console.warn("https://github.com/highlightjs/highlight.js/wiki/security"); + console.warn("The element with unescaped HTML:"); + console.warn(element); + } + if (options.throwUnescapedHTML) { + const err = new HTMLInjectionError( + "One of your code blocks includes unescaped HTML.", + element.innerHTML + ); + throw err; + } + } + + node = element; + const text = node.textContent; + const result = language ? highlight(text, { language, ignoreIllegals: true }) : highlightAuto(text); + + element.innerHTML = result.value; + element.dataset.highlighted = "yes"; + updateClassName(element, language, result.language); + element.result = { + language: result.language, + // TODO: remove with version 11.0 + re: result.relevance, + relevance: result.relevance + }; + if (result.secondBest) { + element.secondBest = { + language: result.secondBest.language, + relevance: result.secondBest.relevance + }; + } + + fire("after:highlightElement", { el: element, result, text }); + } + + /** + * Updates highlight.js global options with the passed options + * + * @param {Partial} userOptions + */ + function configure(userOptions) { + options = inherit(options, userOptions); + } + + // TODO: remove v12, deprecated + const initHighlighting = () => { + highlightAll(); + deprecated("10.6.0", "initHighlighting() deprecated. Use highlightAll() now."); + }; + + // TODO: remove v12, deprecated + function initHighlightingOnLoad() { + highlightAll(); + deprecated("10.6.0", "initHighlightingOnLoad() deprecated. Use highlightAll() now."); + } + + let wantsHighlight = false; + + /** + * auto-highlights all pre>code elements on the page + */ + function highlightAll() { + // if we are called too early in the loading process + if (document.readyState === "loading") { + wantsHighlight = true; + return; + } + + const blocks = document.querySelectorAll(options.cssSelector); + blocks.forEach(highlightElement); + } + + function boot() { + // if a highlight was requested before DOM was loaded, do now + if (wantsHighlight) highlightAll(); + } + + // make sure we are in the browser environment + if (typeof window !== 'undefined' && window.addEventListener) { + window.addEventListener('DOMContentLoaded', boot, false); + } + + /** + * Register a language grammar module + * + * @param {string} languageName + * @param {LanguageFn} languageDefinition + */ + function registerLanguage(languageName, languageDefinition) { + let lang = null; + try { + lang = languageDefinition(hljs); + } catch (error$1) { + error("Language definition for '{}' could not be registered.".replace("{}", languageName)); + // hard or soft error + if (!SAFE_MODE) { throw error$1; } else { error(error$1); } + // languages that have serious errors are replaced with essentially a + // "plaintext" stand-in so that the code blocks will still get normal + // css classes applied to them - and one bad language won't break the + // entire highlighter + lang = PLAINTEXT_LANGUAGE; + } + // give it a temporary name if it doesn't have one in the meta-data + if (!lang.name) lang.name = languageName; + languages[languageName] = lang; + lang.rawDefinition = languageDefinition.bind(null, hljs); + + if (lang.aliases) { + registerAliases(lang.aliases, { languageName }); + } + } + + /** + * Remove a language grammar module + * + * @param {string} languageName + */ + function unregisterLanguage(languageName) { + delete languages[languageName]; + for (const alias of Object.keys(aliases)) { + if (aliases[alias] === languageName) { + delete aliases[alias]; + } + } + } + + /** + * @returns {string[]} List of language internal names + */ + function listLanguages() { + return Object.keys(languages); + } + + /** + * @param {string} name - name of the language to retrieve + * @returns {Language | undefined} + */ + function getLanguage(name) { + name = (name || '').toLowerCase(); + return languages[name] || languages[aliases[name]]; + } + + /** + * + * @param {string|string[]} aliasList - single alias or list of aliases + * @param {{languageName: string}} opts + */ + function registerAliases(aliasList, { languageName }) { + if (typeof aliasList === 'string') { + aliasList = [aliasList]; + } + aliasList.forEach(alias => { aliases[alias.toLowerCase()] = languageName; }); + } + + /** + * Determines if a given language has auto-detection enabled + * @param {string} name - name of the language + */ + function autoDetection(name) { + const lang = getLanguage(name); + return lang && !lang.disableAutodetect; + } + + /** + * Upgrades the old highlightBlock plugins to the new + * highlightElement API + * @param {HLJSPlugin} plugin + */ + function upgradePluginAPI(plugin) { + // TODO: remove with v12 + if (plugin["before:highlightBlock"] && !plugin["before:highlightElement"]) { + plugin["before:highlightElement"] = (data) => { + plugin["before:highlightBlock"]( + Object.assign({ block: data.el }, data) + ); + }; + } + if (plugin["after:highlightBlock"] && !plugin["after:highlightElement"]) { + plugin["after:highlightElement"] = (data) => { + plugin["after:highlightBlock"]( + Object.assign({ block: data.el }, data) + ); + }; + } + } + + /** + * @param {HLJSPlugin} plugin + */ + function addPlugin(plugin) { + upgradePluginAPI(plugin); + plugins.push(plugin); + } + + /** + * @param {HLJSPlugin} plugin + */ + function removePlugin(plugin) { + const index = plugins.indexOf(plugin); + if (index !== -1) { + plugins.splice(index, 1); + } + } + + /** + * + * @param {PluginEvent} event + * @param {any} args + */ + function fire(event, args) { + const cb = event; + plugins.forEach(function(plugin) { + if (plugin[cb]) { + plugin[cb](args); + } + }); + } + + /** + * DEPRECATED + * @param {HighlightedHTMLElement} el + */ + function deprecateHighlightBlock(el) { + deprecated("10.7.0", "highlightBlock will be removed entirely in v12.0"); + deprecated("10.7.0", "Please use highlightElement now."); + + return highlightElement(el); + } + + /* Interface definition */ + Object.assign(hljs, { + highlight, + highlightAuto, + highlightAll, + highlightElement, + // TODO: Remove with v12 API + highlightBlock: deprecateHighlightBlock, + configure, + initHighlighting, + initHighlightingOnLoad, + registerLanguage, + unregisterLanguage, + listLanguages, + getLanguage, + registerAliases, + autoDetection, + inherit, + addPlugin, + removePlugin + }); + + hljs.debugMode = function() { SAFE_MODE = false; }; + hljs.safeMode = function() { SAFE_MODE = true; }; + hljs.versionString = version; + + hljs.regex = { + concat: concat, + lookahead: lookahead, + either: either, + optional: optional, + anyNumberOfTimes: anyNumberOfTimes + }; + + for (const key in MODES) { + // @ts-ignore + if (typeof MODES[key] === "object") { + // @ts-ignore + deepFreeze(MODES[key]); + } + } + + // merge all the modes/regexes into our main object + Object.assign(hljs, MODES); + + return hljs; +}; + +// Other names for the variable may break build script +const highlight = HLJS({}); + +// returns a new instance of the highlighter to be used for extensions +// check https://github.com/wooorm/lowlight/issues/47 +highlight.newInstance = () => HLJS({}); + +export { highlight as default }; diff --git a/highlightjs/es/highlight.min.js b/highlightjs/es/highlight.min.js new file mode 100644 index 0000000..c6d4ae5 --- /dev/null +++ b/highlightjs/es/highlight.min.js @@ -0,0 +1,307 @@ +/*! + Highlight.js v11.9.0 (git: b7ec4bfafc) + (c) 2006-2023 undefined and other contributors + License: BSD-3-Clause + */ +function e(t){return t 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