prism.js

/* eslint-disable */
/* **********************************************
     Begin prism-core.js
********************************************** */

let _self = {};

/**
 * Prism: Lightweight, robust, elegant syntax highlighting
 * MIT license http://www.opensource.org/licenses/mit-license.php/
 * @author Lea Verou http://lea.verou.me
 */

let Prism = (function () {
// Private helper vars
  let lang = /\blang(?:uage)?-([\w-]+)\b/i;
  let uniqueId = 0;

  var _ = _self.Prism = {
    manual: _self.Prism && _self.Prism.manual,
    disableWorkerMessageHandler: _self.Prism && _self.Prism.disableWorkerMessageHandler,
    util: {
      encode (tokens) {
			if (tokens instanceof Token) {
				return new Token(tokens.type, _.util.encode(tokens.content), tokens.alias);
			} else if (_.util.type(tokens) === 'Array') {
				return tokens.map(_.util.encode);
			} else {
				return tokens.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ');
			}
		},

      type (o) {
			return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
		},

      objId (obj) {
			if (!obj['__id']) {
				Object.defineProperty(obj, '__id', { value: ++uniqueId });
			}
			return obj['__id'];
		},

      // Deep clone a language definition (e.g. to extend it)
      clone (o, visited) {
			var type = _.util.type(o);
			visited = visited || {};

			switch (type) {
				case 'Object':
					if (visited[_.util.objId(o)]) {
						return visited[_.util.objId(o)];
					}
					var clone = {};
					visited[_.util.objId(o)] = clone;

					for (var key in o) {
						if (o.hasOwnProperty(key)) {
							clone[key] = _.util.clone(o[key], visited);
						}
					}

					return clone;

				case 'Array':
					if (visited[_.util.objId(o)]) {
						return visited[_.util.objId(o)];
					}
					var clone = [];
					visited[_.util.objId(o)] = clone;

					o.forEach(function (v, i) {
						clone[i] = _.util.clone(v, visited);
					});

					return clone;
			}

			return o;
		},
    },

    languages: {
      extend (id, redef) {
			var lang = _.util.clone(_.languages[id]);

			for (var key in redef) {
				lang[key] = redef[key];
			}

			return lang;
		},

      /**
		 * Insert a token before another token in a language literal
		 * As this needs to recreate the object (we cannot actually insert before keys in object literals),
		 * we cannot just provide an object, we need anobject and a key.
		 * @param inside The key (or language id) of the parent
		 * @param before The key to insert before. If not provided, the function appends instead.
		 * @param insert Object with the key/value pairs to insert
		 * @param root The object that contains `inside`. If equal to Prism.languages, it can be omitted.
		 */
      insertBefore (inside, before, insert, root) {
			root = root || _.languages;
			var grammar = root[inside];

			if (arguments.length == 2) {
				insert = arguments[1];

				for (var newToken in insert) {
					if (insert.hasOwnProperty(newToken)) {
						grammar[newToken] = insert[newToken];
					}
				}

				return grammar;
			}

			var ret = {};

			for (var token in grammar) {

				if (grammar.hasOwnProperty(token)) {

					if (token == before) {

						for (var newToken in insert) {

							if (insert.hasOwnProperty(newToken)) {
								ret[newToken] = insert[newToken];
							}
						}
					}

					ret[token] = grammar[token];
				}
			}

			// Update references in other language definitions
			_.languages.DFS(_.languages, function(key, value) {
				if (value === root[inside] && key != inside) {
					this[key] = ret;
				}
			});

			return root[inside] = ret;
		},

      // Traverse a language definition with Depth First Search
      DFS(o, callback, type, visited) {
			visited = visited || {};
			for (var i in o) {
				if (o.hasOwnProperty(i)) {
					callback.call(o, i, o[i], type || i);

					if (_.util.type(o[i]) === 'Object' && !visited[_.util.objId(o[i])]) {
						visited[_.util.objId(o[i])] = true;
						_.languages.DFS(o[i], callback, null, visited);
					}
					else if (_.util.type(o[i]) === 'Array' && !visited[_.util.objId(o[i])]) {
						visited[_.util.objId(o[i])] = true;
						_.languages.DFS(o[i], callback, i, visited);
					}
				}
			}
		},
    },
    plugins: {},

    highlightAll(async, callback) {
		_.highlightAllUnder(document, async, callback);
	},

    highlightAllUnder(container, async, callback) {
		var env = {
			callback: callback,
			selector: 'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'
		};

		_.hooks.run("before-highlightall", env);

		var elements = env.elements || container.querySelectorAll(env.selector);

		for (var i=0, element; element = elements[i++];) {
			_.highlightElement(element, async === true, env.callback);
		}
	},

    highlightElement(element, async, callback) {
		// Find language
		var language, grammar, parent = element;

		while (parent && !lang.test(parent.className)) {
			parent = parent.parentNode;
		}

		if (parent) {
			language = (parent.className.match(lang) || [,''])[1].toLowerCase();
			grammar = _.languages[language];
		}

		// Set language on the element, if not present
		element.className = element.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;

		if (element.parentNode) {
			// Set language on the parent, for styling
			parent = element.parentNode;

			if (/pre/i.test(parent.nodeName)) {
				parent.className = parent.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;
			}
		}

		var code = element.textContent;

		var env = {
			element: element,
			language: language,
			grammar: grammar,
			code: code
		};

		_.hooks.run('before-sanity-check', env);

		if (!env.code || !env.grammar) {
			if (env.code) {
				_.hooks.run('before-highlight', env);
				env.element.textContent = env.code;
				_.hooks.run('after-highlight', env);
			}
			_.hooks.run('complete', env);
			return;
		}

		_.hooks.run('before-highlight', env);

		if (async && _self.Worker) {
			var worker = new Worker(_.filename);

			worker.onmessage = function(evt) {
				env.highlightedCode = evt.data;

				_.hooks.run('before-insert', env);

				env.element.innerHTML = env.highlightedCode;

				callback && callback.call(env.element);
				_.hooks.run('after-highlight', env);
				_.hooks.run('complete', env);
			};

			worker.postMessage(JSON.stringify({
				language: env.language,
				code: env.code,
				immediateClose: true
			}));
		}
		else {
			env.highlightedCode = _.highlight(env.code, env.grammar, env.language);

			_.hooks.run('before-insert', env);

			env.element.innerHTML = env.highlightedCode;

			callback && callback.call(element);

			_.hooks.run('after-highlight', env);
			_.hooks.run('complete', env);
		}
	},

    highlight (text, grammar, language) {
		var env = {
			code: text,
			grammar: grammar,
			language: language
		};
		_.hooks.run('before-tokenize', env);
		env.tokens = _.tokenize(env.code, env.grammar);
		_.hooks.run('after-tokenize', env);
		return Token.stringify(_.util.encode(env.tokens), env.language);
	},

    matchGrammar (text, strarr, grammar, index, startPos, oneshot, target) {
		var Token = _.Token;

		for (var token in grammar) {
			if(!grammar.hasOwnProperty(token) || !grammar[token]) {
				continue;
			}

			if (token == target) {
				return;
			}

			var patterns = grammar[token];
			patterns = (_.util.type(patterns) === "Array") ? patterns : [patterns];

			for (var j = 0; j < patterns.length; ++j) {
				var pattern = patterns[j],
					inside = pattern.inside,
					lookbehind = !!pattern.lookbehind,
					greedy = !!pattern.greedy,
					lookbehindLength = 0,
					alias = pattern.alias;

				if (greedy && !pattern.pattern.global) {
					// Without the global flag, lastIndex won't work
					var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
					pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
				}

				pattern = pattern.pattern || pattern;

				// Don’t cache length as it changes during the loop
				for (var i = index, pos = startPos; i < strarr.length; pos += strarr[i].length, ++i) {

					var str = strarr[i];

					if (strarr.length > text.length) {
						// Something went terribly wrong, ABORT, ABORT!
						return;
					}

					if (str instanceof Token) {
						continue;
					}

					if (greedy && i != strarr.length - 1) {
						pattern.lastIndex = pos;
						var match = pattern.exec(text);
						if (!match) {
							break;
						}

						var from = match.index + (lookbehind ? match[1].length : 0),
						    to = match.index + match[0].length,
						    k = i,
						    p = pos;

						for (var len = strarr.length; k < len && (p < to || (!strarr[k].type && !strarr[k - 1].greedy)); ++k) {
							p += strarr[k].length;
							// Move the index i to the element in strarr that is closest to from
							if (from >= p) {
								++i;
								pos = p;
							}
						}

						// If strarr[i] is a Token, then the match starts inside another Token, which is invalid
						if (strarr[i] instanceof Token) {
							continue;
						}

						// Number of tokens to delete and replace with the new match
						delNum = k - i;
						str = text.slice(pos, p);
						match.index -= pos;
					} else {
						pattern.lastIndex = 0;

						var match = pattern.exec(str),
							delNum = 1;
					}

					if (!match) {
						if (oneshot) {
							break;
						}

						continue;
					}

					if(lookbehind) {
						lookbehindLength = match[1] ? match[1].length : 0;
					}

					var from = match.index + lookbehindLength,
					    match = match[0].slice(lookbehindLength),
					    to = from + match.length,
					    before = str.slice(0, from),
					    after = str.slice(to);

					var args = [i, delNum];

					if (before) {
						++i;
						pos += before.length;
						args.push(before);
					}

					var wrapped = new Token(token, inside? _.tokenize(match, inside) : match, alias, match, greedy);

					args.push(wrapped);

					if (after) {
						args.push(after);
					}

					Array.prototype.splice.apply(strarr, args);

					if (delNum != 1)
						_.matchGrammar(text, strarr, grammar, i, pos, true, token);

					if (oneshot)
						break;
				}
			}
		}
	},

    tokenize(text, grammar, language) {
		var strarr = [text];

		var rest = grammar.rest;

		if (rest) {
			for (var token in rest) {
				grammar[token] = rest[token];
			}

			delete grammar.rest;
		}

		_.matchGrammar(text, strarr, grammar, 0, 0, false);

		return strarr;
	},

    hooks: {
      all: {},

      add (name, callback) {
			var hooks = _.hooks.all;

			hooks[name] = hooks[name] || [];

			hooks[name].push(callback);
		},

      run (name, env) {
			var callbacks = _.hooks.all[name];

			if (!callbacks || !callbacks.length) {
				return;
			}

			for (var i=0, callback; callback = callbacks[i++];) {
				callback(env);
			}
		},
    },
  };

  var Token = _.Token = function (type, content, alias, matchedStr, greedy) {
    this.type = type;
    this.content = content;
    this.alias = alias;
    // Copy of the full string this token was created from
    this.length = (matchedStr || '').length | 0;
    this.greedy = !!greedy;
  };

  Token.stringify = function (o, language, parent) {
    if (typeof o === 'string') {
      return o;
    }

    if (_.util.type(o) === 'Array') {
      return o.map((element) => {
			return Token.stringify(element, language, o);
		}).join('');
    }

    let env = {
      type: o.type,
      content: Token.stringify(o.content, language, parent),
      tag: 'span',
      classes: ['token', o.type],
      attributes: {},
      language,
      parent,
    };

    if (o.alias) {
      let aliases = _.util.type(o.alias) === 'Array' ? o.alias : [o.alias];
      Array.prototype.push.apply(env.classes, aliases);
    }

    _.hooks.run('wrap', env);

    let attributes = Object.keys(env.attributes).map((name) => {
		return name + '="' + (env.attributes[name] || '').replace(/"/g, '&quot;') + '"';
	}).join(' ');

    return `<${  env.tag  } class="${  env.classes.join(' ')  }"${  attributes ? ' ' + attributes : ''  }>${  env.content  }</${  env.tag  }>`;
  };

  if (!_self.document) {
    if (!_self.addEventListener) {
      // in Node.js
      return _self.Prism;
    }

    if (!_.disableWorkerMessageHandler) {
      // In worker
      _self.addEventListener('message', (evt) => {
			var message = JSON.parse(evt.data),
				lang = message.language,
				code = message.code,
				immediateClose = message.immediateClose;

			_self.postMessage(_.highlight(code, _.languages[lang], lang));
			if (immediateClose) {
				_self.close();
			}
		}, false);
    }

    return _self.Prism;
  }

  // Get current script and highlight
  // let script = document.currentScript || [].slice.call(document.getElementsByTagName('script')).pop();

  // if (script) {
  //   _.filename = script.src;

  //   if (!_.manual && !script.hasAttribute('data-manual')) {
  //     if (document.readyState !== 'loading') {
  //       if (window.requestAnimationFrame) {
  //         window.requestAnimationFrame(_.highlightAll);
  //       } else {
  //         window.setTimeout(_.highlightAll, 16);
  //       }
  //     } else {
  //       document.addEventListener('DOMContentLoaded', _.highlightAll);
  //     }
  //   }
  // }

  return _self.Prism;
}());

if (typeof module !== 'undefined' && module.exports) {
  module.exports = Prism;
}

// hack for components to work correctly in node.js
if (typeof global !== 'undefined') {
  global.Prism = Prism;
}


/* **********************************************
     Begin prism-markup.js
********************************************** */

Prism.languages.markup = {
  comment: /<!--[\s\S]*?-->/,
  prolog: /<\?[\s\S]+?\?>/,
  doctype: /<!DOCTYPE[\s\S]+?>/i,
  cdata: /<!\[CDATA\[[\s\S]*?]]>/i,
  tag: {
    pattern: /<\/?(?!\d)[^\s>\/=$<%]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s'">=]+))?)*\s*\/?>/i,
    greedy: true,
    inside: {
      tag: {
        pattern: /^<\/?[^\s>\/]+/i,
        inside: {
          punctuation: /^<\/?/,
          namespace: /^[^\s>\/:]+:/,
        },
      },
      'attr-value': {
        pattern: /=(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s'">=]+)/i,
        inside: {
          punctuation: [
            /^=/,
            {
              pattern: /(^|[^\\])["']/,
              lookbehind: true,
            },
          ],
        },
      },
      punctuation: /\/?>/,
      'attr-name': {
        pattern: /[^\s>\/]+/,
        inside: {
          namespace: /^[^\s>\/:]+:/,
        },
      },

    },
  },
  entity: /&#?[\da-z]{1,8};/i,
};

Prism.languages.markup.tag.inside['attr-value'].inside.entity =	Prism.languages.markup.entity;

// Plugin to make entity title show the real entity, idea by Roman Komarov
Prism.hooks.add('wrap', (env) => {

	if (env.type === 'entity') {
		env.attributes['title'] = env.content.replace(/&amp;/, '&');
	}
});

Prism.languages.xml = Prism.languages.markup;
Prism.languages.html = Prism.languages.markup;
Prism.languages.mathml = Prism.languages.markup;
Prism.languages.svg = Prism.languages.markup;


/* **********************************************
     Begin prism-css.js
********************************************** */

Prism.languages.css = {
  comment: /\/\*[\s\S]*?\*\//,
  atrule: {
    pattern: /@[\w-]+?.*?(?:;|(?=\s*\{))/i,
    inside: {
      rule: /@[\w-]+/,
      // See rest below
    },
  },
  url: /url\((?:(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1|.*?)\)/i,
  selector: /[^{}\s][^{};]*?(?=\s*\{)/,
  string: {
    pattern: /("|')(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
    greedy: true,
  },
  property: /[-_a-z\xA0-\uFFFF][-\w\xA0-\uFFFF]*(?=\s*:)/i,
  important: /\B!important\b/i,
  function: /[-a-z0-9]+(?=\()/i,
  punctuation: /[(){};:]/,
};

Prism.languages.css.atrule.inside.rest = Prism.languages.css;

if (Prism.languages.markup) {
  Prism.languages.insertBefore('markup', 'tag', {
    style: {
      pattern: /(<style[\s\S]*?>)[\s\S]*?(?=<\/style>)/i,
      lookbehind: true,
      inside: Prism.languages.css,
      alias: 'language-css',
      greedy: true,
    },
  });

  Prism.languages.insertBefore('inside', 'attr-value', {
    'style-attr': {
      pattern: /\s*style=("|')(?:\\[\s\S]|(?!\1)[^\\])*\1/i,
      inside: {
        'attr-name': {
          pattern: /^\s*style/i,
          inside: Prism.languages.markup.tag.inside,
        },
        punctuation: /^\s*=\s*['"]|['"]\s*$/,
        'attr-value': {
          pattern: /.+/i,
          inside: Prism.languages.css,
        },
      },
      alias: 'language-css',
    },
  }, Prism.languages.markup.tag);
}

/* **********************************************
     Begin prism-clike.js
********************************************** */

Prism.languages.clike = {
  comment: [
    {
      pattern: /(^|[^\\])\/\*[\s\S]*?(?:\*\/|$)/,
      lookbehind: true,
    },
    {
      pattern: /(^|[^\\:])\/\/.*/,
      lookbehind: true,
      greedy: true,
    },
  ],
  string: {
    pattern: /(["'])(?:\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
    greedy: true,
  },
  'class-name': {
    pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[\w.\\]+/i,
    lookbehind: true,
    inside: {
      punctuation: /[.\\]/,
    },
  },
  keyword: /\b(?:if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
  boolean: /\b(?:true|false)\b/,
  function: /[a-z0-9_]+(?=\()/i,
  number: /\b0x[\da-f]+\b|(?:\b\d+\.?\d*|\B\.\d+)(?:e[+-]?\d+)?/i,
  operator: /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
  punctuation: /[{}[\];(),.:]/,
};


/* **********************************************
     Begin prism-javascript.js
********************************************** */

Prism.languages.javascript = Prism.languages.extend('clike', {
  keyword: /\b(?:as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
  number: /\b(?:0[xX][\dA-Fa-f]+|0[bB][01]+|0[oO][0-7]+|NaN|Infinity)\b|(?:\b\d+\.?\d*|\B\.\d+)(?:[Ee][+-]?\d+)?/,
  // Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
  function: /[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*\()/i,
  operator: /-[-=]?|\+[+=]?|!=?=?|<<?=?|>>?>?=?|=(?:==?|>)?|&[&=]?|\|[|=]?|\*\*?=?|\/=?|~|\^=?|%=?|\?|\.{3}/,
});

Prism.languages.insertBefore('javascript', 'keyword', {
  regex: {
    pattern: /((?:^|[^$\w\xA0-\uFFFF."'\])\s])\s*)\/(\[[^\]\r\n]+]|\\.|[^/\\\[\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})\]]))/,
    lookbehind: true,
    greedy: true,
  },
  // This must be declared before keyword because we use "function" inside the look-forward
  'function-variable': {
    pattern: /[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*(?=\s*=\s*(?:function\b|(?:\([^()]*\)|[_$a-z\xA0-\uFFFF][$\w\xA0-\uFFFF]*)\s*=>))/i,
    alias: 'function',
  },
  constant: /\b[A-Z][A-Z\d_]*\b/,
});

Prism.languages.insertBefore('javascript', 'string', {
  'template-string': {
    pattern: /`(?:\\[\s\S]|\${[^}]+}|[^\\`])*`/,
    greedy: true,
    inside: {
      interpolation: {
        pattern: /\${[^}]+}/,
        inside: {
          'interpolation-punctuation': {
            pattern: /^\${|}$/,
            alias: 'punctuation',
          },
          rest: null, // See below
        },
      },
      string: /[\s\S]+/,
    },
  },
});
Prism.languages.javascript['template-string'].inside.interpolation.inside.rest = Prism.languages.javascript;

if (Prism.languages.markup) {
  Prism.languages.insertBefore('markup', 'tag', {
    script: {
      pattern: /(<script[\s\S]*?>)[\s\S]*?(?=<\/script>)/i,
      lookbehind: true,
      inside: Prism.languages.javascript,
      alias: 'language-javascript',
      greedy: true,
    },
  });
}

Prism.languages.js = Prism.languages.javascript;

export default Prism;