devdocs/assets/javascripts/vendor/prism.js

/* http://prismjs.com/download.html?themes=prism&languages=markup+css+clike+javascript+c+cpp+coffeescript+ruby+elixir+go+php+python+rust */
var _self = (typeof window !== 'undefined')
	? window   // if in browser
	: (
		(typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope)
		? self // if in worker
		: {}   // if in node js
	);

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

var Prism = (function(){

// Private helper vars
var lang = /\blang(?:uage)?-(\w+)\b/i;
var uniqueId = 0;

var _ = _self.Prism = {
	util: {
		encode: function (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: function (o) {
			return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
		},

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

		// Deep clone a language definition (e.g. to extend it)
		clone: function (o) {
			var type = _.util.type(o);

			switch (type) {
				case 'Object':
					var clone = {};

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

					return clone;

				case 'Array':
					// Check for existence for IE8
					return o.map && o.map(function(v) { return _.util.clone(v); });
			}

			return o;
		}
	},

	languages: {
		extend: function (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: function (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: function(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: function(async, callback) {
		var elements = document.querySelectorAll('code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code');

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

	highlightElement: function(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];
			grammar = _.languages[language];
		}

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

		// 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
		};

		if (!code || !grammar) {
			_.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: function (text, grammar, language) {
		var tokens = _.tokenize(text, grammar);
		return Token.stringify(_.util.encode(tokens), language);
	},

	tokenize: function(text, grammar, language) {
		var Token = _.Token;

		var strarr = [text];

		var rest = grammar.rest;

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

			delete grammar.rest;
		}

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

			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,
					lookbehindLength = 0,
					alias = pattern.alias;

				pattern = pattern.pattern || pattern;

				for (var i=0; i<strarr.length; i++) { // Don’t cache length as it changes during the loop

					var str = strarr[i];

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

					if (str instanceof Token) {
						continue;
					}

					pattern.lastIndex = 0;

					var match = pattern.exec(str);

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

						var from = match.index - 1 + lookbehindLength,
							match = match[0].slice(lookbehindLength),
							len = match.length,
							to = from + len,
							before = str.slice(0, from + 1),
							after = str.slice(to + 1);

						var args = [i, 1];

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

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

						args.push(wrapped);

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

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

		return strarr;
	},

	hooks: {
		all: {},

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

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

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

		run: function (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) {
	this.type = type;
	this.content = content;
	this.alias = alias;
};

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

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

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

	if (env.type == 'comment') {
		env.attributes['spellcheck'] = 'true';
	}

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

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

	var attributes = '';

	for (var name in env.attributes) {
		attributes += (attributes ? ' ' : '') + name + '="' + (env.attributes[name] || '') + '"';
	}

	return '<' + env.tag + ' class="' + env.classes.join(' ') + '" ' + attributes + '>' + env.content + '</' + env.tag + '>';

};

// if (!_self.document) {
// 	if (!_self.addEventListener) {
// 		// in Node.js
// 		return _self.Prism;
// 	}
//  	// In worker
// 	_self.addEventListener('message', function(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
// var script = document.currentScript || [].slice.call(document.getElementsByTagName("script")).pop();

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

// 	if (document.addEventListener && !script.hasAttribute('data-manual')) {
// 		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;
}
;
Prism.languages.markup = {
	'comment': /<!--[\w\W]*?-->/,
	'prolog': /<\?[\w\W]+?\?>/,
	'doctype': /<!DOCTYPE[\w\W]+?>/,
	'cdata': /<!\[CDATA\[[\w\W]*?]]>/i,
	'tag': {
		pattern: /<\/?(?!\d)[^\s>\/=.$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
		inside: {
			'tag': {
				pattern: /^<\/?[^\s>\/]+/i,
				inside: {
					'punctuation': /^<\/?/,
					'namespace': /^[^\s>\/:]+:/
				}
			},
			'attr-value': {
				pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/i,
				inside: {
					'punctuation': /[=>"']/
				}
			},
			'punctuation': /\/?>/,
			'attr-name': {
				pattern: /[^\s>\/]+/,
				inside: {
					'namespace': /^[^\s>\/:]+:/
				}
			}

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

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

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

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

Prism.languages.css['atrule'].inside.rest = Prism.util.clone(Prism.languages.css);

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

	Prism.languages.insertBefore('inside', 'attr-value', {
		'style-attr': {
			pattern: /\s*style=("|').*?\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);
};
Prism.languages.clike = {
	'comment': [
		{
			pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
			lookbehind: true
		},
		{
			pattern: /(^|[^\\:])\/\/.*/,
			lookbehind: true
		}
	],
	'string': /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
	'class-name': {
		pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/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': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
	'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
	'punctuation': /[{}[\];(),.:]/
};

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-?(0x[\dA-Fa-f]+|0b[01]+|0o[0-7]+|\d*\.?\d+([Ee][+-]?\d+)?|NaN|Infinity)\b/,
	// Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
	'function': /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i
});

Prism.languages.insertBefore('javascript', 'keyword', {
	'regex': {
		pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\\\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})]))/,
		lookbehind: true
	}
});

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

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

Prism.languages.js = Prism.languages.javascript;
Prism.languages.c = Prism.languages.extend('clike', {
	'keyword': /\b(asm|typeof|inline|auto|break|case|char|const|continue|default|do|double|else|enum|extern|float|for|goto|if|int|long|register|return|short|signed|sizeof|static|struct|switch|typedef|union|unsigned|void|volatile|while)\b/,
	'operator': /\-[>-]?|\+\+?|!=?|<<?=?|>>?=?|==?|&&?|\|?\||[~^%?*\/]/,
	'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)[ful]*\b/i
});

Prism.languages.insertBefore('c', 'string', {
	'macro': {
		// allow for multiline macro definitions
		// spaces after the # character compile fine with gcc
		pattern: /(^\s*)#\s*[a-z]+([^\r\n\\]|\\.|\\(?:\r\n?|\n))*/im,
		lookbehind: true,
		alias: 'property',
		inside: {
			// highlight the path of the include statement as a string
			'string': {
				pattern: /(#\s*include\s*)(<.+?>|("|')(\\?.)+?\3)/,
				lookbehind: true
			},
			// highlight macro directives as keywords
			'directive': {
				pattern: /(#\s*)\b(define|elif|else|endif|error|ifdef|ifndef|if|import|include|line|pragma|undef|using)\b/,
				lookbehind: true,
				alias: 'keyword'
			}
		}
	},
	// highlight predefined macros as constants
	'constant': /\b(__FILE__|__LINE__|__DATE__|__TIME__|__TIMESTAMP__|__func__|EOF|NULL|stdin|stdout|stderr)\b/
});

delete Prism.languages.c['class-name'];
delete Prism.languages.c['boolean'];

Prism.languages.cpp = Prism.languages.extend('c', {
	'keyword': /\b(alignas|alignof|asm|auto|bool|break|case|catch|char|char16_t|char32_t|class|compl|const|constexpr|const_cast|continue|decltype|default|delete|do|double|dynamic_cast|else|enum|explicit|export|extern|float|for|friend|goto|if|inline|int|long|mutable|namespace|new|noexcept|nullptr|operator|private|protected|public|register|reinterpret_cast|return|short|signed|sizeof|static|static_assert|static_cast|struct|switch|template|this|thread_local|throw|try|typedef|typeid|typename|union|unsigned|using|virtual|void|volatile|wchar_t|while)\b/,
	'boolean': /\b(true|false)\b/,
	'operator': /[-+]{1,2}|!=?|<{1,2}=?|>{1,2}=?|\->|:{1,2}|={1,2}|\^|~|%|&{1,2}|\|?\||\?|\*|\/|\b(and|and_eq|bitand|bitor|not|not_eq|or|or_eq|xor|xor_eq)\b/
});

Prism.languages.insertBefore('cpp', 'keyword', {
	'class-name': {
		pattern: /(class\s+)[a-z0-9_]+/i,
		lookbehind: true
	}
});
(function(Prism) {

// Ignore comments starting with { to privilege string interpolation highlighting
var comment = /#(?!\{).+/,
    interpolation = {
    	pattern: /#\{[^}]+\}/,
    	alias: 'variable'
    };

Prism.languages.coffeescript = Prism.languages.extend('javascript', {
	'comment': comment,
	'string': [

		// Strings are multiline
		/'(?:\\?[^\\])*?'/,

		{
			// Strings are multiline
			pattern: /"(?:\\?[^\\])*?"/,
			inside: {
				'interpolation': interpolation
			}
		}
	],
	'keyword': /\b(and|break|by|catch|class|continue|debugger|delete|do|each|else|extend|extends|false|finally|for|if|in|instanceof|is|isnt|let|loop|namespace|new|no|not|null|of|off|on|or|own|return|super|switch|then|this|throw|true|try|typeof|undefined|unless|until|when|while|window|with|yes|yield)\b/,
	'class-member': {
		pattern: /@(?!\d)\w+/,
		alias: 'variable'
	}
});

Prism.languages.insertBefore('coffeescript', 'comment', {
	'multiline-comment': {
		pattern: /###[\s\S]+?###/,
		alias: 'comment'
	},

	// Block regexp can contain comments and interpolation
	'block-regex': {
		pattern: /\/{3}[\s\S]*?\/{3}/,
		alias: 'regex',
		inside: {
			'comment': comment,
			'interpolation': interpolation
		}
	}
});

Prism.languages.insertBefore('coffeescript', 'string', {
	'inline-javascript': {
		pattern: /`(?:\\?[\s\S])*?`/,
		inside: {
			'delimiter': {
				pattern: /^`|`$/,
				alias: 'punctuation'
			},
			rest: Prism.languages.javascript
		}
	},

	// Block strings
	'multiline-string': [
		{
			pattern: /'''[\s\S]*?'''/,
			alias: 'string'
		},
		{
			pattern: /"""[\s\S]*?"""/,
			alias: 'string',
			inside: {
				interpolation: interpolation
			}
		}
	]

});

Prism.languages.insertBefore('coffeescript', 'keyword', {
	// Object property
	'property': /(?!\d)\w+(?=\s*:(?!:))/
});

}(Prism));
/**
 * Original by Samuel Flores
 *
 * Adds the following new token classes:
 * 		constant, builtin, variable, symbol, regex
 */
(function(Prism) {
	Prism.languages.ruby = Prism.languages.extend('clike', {
		'comment': /#(?!\{[^\r\n]*?\}).*/,
		'keyword': /\b(alias|and|BEGIN|begin|break|case|class|def|define_method|defined|do|each|else|elsif|END|end|ensure|false|for|if|in|module|new|next|nil|not|or|raise|redo|require|rescue|retry|return|self|super|then|throw|true|undef|unless|until|when|while|yield)\b/
	});

	var interpolation = {
		pattern: /#\{[^}]+\}/,
		inside: {
			'delimiter': {
				pattern: /^#\{|\}$/,
				alias: 'tag'
			},
			rest: Prism.util.clone(Prism.languages.ruby)
		}
	};

	Prism.languages.insertBefore('ruby', 'keyword', {
		'regex': [
			{
				pattern: /%r([^a-zA-Z0-9\s\{\(\[<])(?:[^\\]|\\[\s\S])*?\1[gim]{0,3}/,
				inside: {
					'interpolation': interpolation
				}
			},
			{
				pattern: /%r\((?:[^()\\]|\\[\s\S])*\)[gim]{0,3}/,
				inside: {
					'interpolation': interpolation
				}
			},
			{
				// Here we need to specifically allow interpolation
				pattern: /%r\{(?:[^#{}\\]|#(?:\{[^}]+\})?|\\[\s\S])*\}[gim]{0,3}/,
				inside: {
					'interpolation': interpolation
				}
			},
			{
				pattern: /%r\[(?:[^\[\]\\]|\\[\s\S])*\][gim]{0,3}/,
				inside: {
					'interpolation': interpolation
				}
			},
			{
				pattern: /%r<(?:[^<>\\]|\\[\s\S])*>[gim]{0,3}/,
				inside: {
					'interpolation': interpolation
				}
			},
			{
				pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\r\n])+\/[gim]{0,3}(?=\s*($|[\r\n,.;})]))/,
				lookbehind: true
			}
		],
		'variable': /[@$]+[a-zA-Z_][a-zA-Z_0-9]*(?:[?!]|\b)/,
		'symbol': /:[a-zA-Z_][a-zA-Z_0-9]*(?:[?!]|\b)/
	});

	Prism.languages.insertBefore('ruby', 'number', {
		'builtin': /\b(Array|Bignum|Binding|Class|Continuation|Dir|Exception|FalseClass|File|Stat|File|Fixnum|Fload|Hash|Integer|IO|MatchData|Method|Module|NilClass|Numeric|Object|Proc|Range|Regexp|String|Struct|TMS|Symbol|ThreadGroup|Thread|Time|TrueClass)\b/,
		'constant': /\b[A-Z][a-zA-Z_0-9]*(?:[?!]|\b)/
	});

	Prism.languages.ruby.string = [
		{
			pattern: /%[qQiIwWxs]?([^a-zA-Z0-9\s\{\(\[<])(?:[^\\]|\\[\s\S])*?\1/,
			inside: {
				'interpolation': interpolation
			}
		},
		{
			pattern: /%[qQiIwWxs]?\((?:[^()\\]|\\[\s\S])*\)/,
			inside: {
				'interpolation': interpolation
			}
		},
		{
			// Here we need to specifically allow interpolation
			pattern: /%[qQiIwWxs]?\{(?:[^#{}\\]|#(?:\{[^}]+\})?|\\[\s\S])*\}/,
			inside: {
				'interpolation': interpolation
			}
		},
		{
			pattern: /%[qQiIwWxs]?\[(?:[^\[\]\\]|\\[\s\S])*\]/,
			inside: {
				'interpolation': interpolation
			}
		},
		{
			pattern: /%[qQiIwWxs]?<(?:[^<>\\]|\\[\s\S])*>/,
			inside: {
				'interpolation': interpolation
			}
		},
		{
			pattern: /("|')(#\{[^}]+\}|\\(?:\r?\n|\r)|\\?.)*?\1/,
			inside: {
				'interpolation': interpolation
			}
		}
	];
}(Prism));
Prism.languages.elixir = {
	// Negative look-ahead is needed for string interpolation
	// Negative look-behind is needed to avoid highlighting markdown headers in
	// multi-line doc strings
	'comment': {
		pattern: /(^|[^#])#(?![{#]).*/m,
		lookbehind: true
	},
	// ~r"""foo""", ~r'''foo''', ~r/foo/, ~r|foo|, ~r"foo", ~r'foo', ~r(foo), ~r[foo], ~r{foo}, ~r<foo>
	'regex': /~[rR](?:("""|'''|[\/|"'])(?:\\.|(?!\1)[^\\])+\1|\((?:\\\)|[^)])+\)|\[(?:\\\]|[^\]])+\]|\{(?:\\\}|[^}])+\}|<(?:\\>|[^>])+>)[uismxfr]*/,
	'string': [
		{
			// ~s"""foo""", ~s'''foo''', ~s/foo/, ~s|foo|, ~s"foo", ~s'foo', ~s(foo), ~s[foo], ~s{foo}, ~s<foo>
			pattern: /~[cCsSwW](?:("""|'''|[\/|"'])(?:\\.|(?!\1)[^\\])+\1|\((?:\\\)|[^)])+\)|\[(?:\\\]|[^\]])+\]|\{(?:\\\}|#\{[^}]+\}|[^}])+\}|<(?:\\>|[^>])+>)[csa]?/,
			inside: {
				// See interpolation below
			}
		},
		{
			pattern: /("""|''')[\s\S]*?\1/,
			inside: {
				// See interpolation below
			}
		},
		{
			// Multi-line strings are allowed
			pattern: /("|')(?:\\[\s\S]|(?!\1)[^\\])*\1/,
			inside: {
				// See interpolation below
			}
		}
	],
	'atom': {
		// Look-behind prevents bad highlighting of the :: operator
		pattern: /(^|[^:]):\w+/,
		lookbehind: true,
		alias: 'symbol'
	},
	// Look-ahead prevents bad highlighting of the :: operator
	'attr-name': /\w+:(?!:)/,
	'capture': {
		// Look-behind prevents bad highlighting of the && operator
		pattern: /(^|[^&])&(?:[^&\s\d()][^\s()]*|(?=\())/,
		lookbehind: true,
		alias: 'function'
	},
	'argument': {
		// Look-behind prevents bad highlighting of the && operator
		pattern: /(^|[^&])&\d+/,
		lookbehind: true,
		alias: 'variable'
	},
	'attribute': {
		pattern: /@[\S]+/,
		alias: 'variable'
	},
	'number': /\b(?:0[box][a-f\d_]+|\d[\d_]*)(?:\.[\d_]+)?(?:e[+-]?[\d_]+)?\b/i,
	'keyword': /\b(?:after|alias|and|case|catch|cond|def(?:callback|exception|impl|module|p|protocol|struct)?|do|else|end|fn|for|if|import|not|or|require|rescue|try|unless|use|when)\b/,
	'boolean': /\b(?:true|false|nil)\b/,
	'operator': [
		/\bin\b|&&?|\|[|>]?|\\\\|::|\.\.\.?|\+\+?|-[->]?|<[-=>]|>=|!==?|\B!|=(?:==?|[>~])?|[*\/^]/,
		{
			// We don't want to match <<
			pattern: /([^<])<(?!<)/,
			lookbehind: true
		},
		{
			// We don't want to match >>
			pattern: /([^>])>(?!>)/,
			lookbehind: true
		}
	],
	'punctuation': /<<|>>|[.,%\[\]{}()]/
};

Prism.languages.elixir.string.forEach(function(o) {
	o.inside = {
		'interpolation': {
			pattern: /#\{[^}]+\}/,
			inside: {
				'delimiter': {
					pattern: /^#\{|\}$/,
					alias: 'punctuation'
				},
				rest: Prism.util.clone(Prism.languages.elixir)
			}
		}
	};
});


Prism.languages.go = Prism.languages.extend('clike', {
	'keyword': /\b(break|case|chan|const|continue|default|defer|else|fallthrough|for|func|go(to)?|if|import|interface|map|package|range|return|select|struct|switch|type|var)\b/,
	'builtin': /\b(bool|byte|complex(64|128)|error|float(32|64)|rune|string|u?int(8|16|32|64|)|uintptr|append|cap|close|complex|copy|delete|imag|len|make|new|panic|print(ln)?|real|recover)\b/,
	'boolean': /\b(_|iota|nil|true|false)\b/,
	'operator': /[*\/%^!=]=?|\+[=+]?|-[=-]?|\|[=|]?|&(?:=|&|\^=?)?|>(?:>=?|=)?|<(?:<=?|=|-)?|:=|\.\.\./,
	'number': /\b(-?(0x[a-f\d]+|(\d+\.?\d*|\.\d+)(e[-+]?\d+)?)i?)\b/i,
	'string': /("|'|`)(\\?.|\r|\n)*?\1/
});
delete Prism.languages.go['class-name'];

/**
 * Original by Aaron Harun: http://aahacreative.com/2012/07/31/php-syntax-highlighting-prism/
 * Modified by Miles Johnson: http://milesj.me
 *
 * Supports the following:
 * 		- Extends clike syntax
 * 		- Support for PHP 5.3+ (namespaces, traits, generators, etc)
 * 		- Smarter constant and function matching
 *
 * Adds the following new token classes:
 * 		constant, delimiter, variable, function, package
 */

Prism.languages.php = Prism.languages.extend('clike', {
	'keyword': /\b(and|or|xor|array|as|break|case|cfunction|class|const|continue|declare|default|die|do|else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|for|foreach|function|include|include_once|global|if|new|return|static|switch|use|require|require_once|var|while|abstract|interface|public|implements|private|protected|parent|throw|null|echo|print|trait|namespace|final|yield|goto|instanceof|finally|try|catch)\b/i,
	'constant': /\b[A-Z0-9_]{2,}\b/,
	'comment': {
		pattern: /(^|[^\\])(?:\/\*[\w\W]*?\*\/|\/\/.*)/,
		lookbehind: true
	}
});

// Shell-like comments are matched after strings, because they are less
// common than strings containing hashes...
Prism.languages.insertBefore('php', 'class-name', {
	'shell-comment': {
		pattern: /(^|[^\\])#.*/,
		lookbehind: true,
		alias: 'comment'
	}
});

Prism.languages.insertBefore('php', 'keyword', {
	'delimiter': /\?>|<\?(?:php)?/i,
	'variable': /\$\w+\b/i,
	'package': {
		pattern: /(\\|namespace\s+|use\s+)[\w\\]+/,
		lookbehind: true,
		inside: {
			punctuation: /\\/
		}
	}
});

// Must be defined after the function pattern
Prism.languages.insertBefore('php', 'operator', {
	'property': {
		pattern: /(->)[\w]+/,
		lookbehind: true
	}
});

// Add HTML support of the markup language exists
if (Prism.languages.markup) {

	// Tokenize all inline PHP blocks that are wrapped in <?php ?>
	// This allows for easy PHP + markup highlighting
	Prism.hooks.add('before-highlight', function(env) {
		if (env.language !== 'php') {
			return;
		}

		env.tokenStack = [];

		env.backupCode = env.code;
		env.code = env.code.replace(/(?:<\?php|<\?)[\w\W]*?(?:\?>)/ig, function(match) {
			env.tokenStack.push(match);

			return '{{{PHP' + env.tokenStack.length + '}}}';
		});
	});

	// Restore env.code for other plugins (e.g. line-numbers)
	Prism.hooks.add('before-insert', function(env) {
		if (env.language === 'php') {
			env.code = env.backupCode;
			delete env.backupCode;
		}
	});

	// Re-insert the tokens after highlighting
	Prism.hooks.add('after-highlight', function(env) {
		if (env.language !== 'php') {
			return;
		}

		for (var i = 0, t; t = env.tokenStack[i]; i++) {
			// The replace prevents $$, $&, $`, $', $n, $nn from being interpreted as special patterns
			env.highlightedCode = env.highlightedCode.replace('{{{PHP' + (i + 1) + '}}}', Prism.highlight(t, env.grammar, 'php').replace(/\$/g, '$$$$'));
		}

		env.element.innerHTML = env.highlightedCode;
	});

	// Wrap tokens in classes that are missing them
	Prism.hooks.add('wrap', function(env) {
		if (env.language === 'php' && env.type === 'markup') {
			env.content = env.content.replace(/(\{\{\{PHP[0-9]+\}\}\})/g, "<span class=\"token php\">$1</span>");
		}
	});

	// Add the rules before all others
	Prism.languages.insertBefore('php', 'comment', {
		'markup': {
			pattern: /<[^?]\/?(.*?)>/,
			inside: Prism.languages.markup
		},
		'php': /\{\{\{PHP[0-9]+\}\}\}/
	});
}
;
Prism.languages.python= {
	'triple-quoted-string': {
		pattern: /"""[\s\S]+?"""|'''[\s\S]+?'''/,
		alias: 'string'
	},
	'comment': {
		pattern: /(^|[^\\])#.*/,
		lookbehind: true
	},
	'string': /("|')(?:\\?.)*?\1/,
	'function' : {
		pattern: /((?:^|\s)def[ \t]+)[a-zA-Z_][a-zA-Z0-9_]*(?=\()/g,
		lookbehind: true
	},
	'class-name': {
		pattern: /(\bclass\s+)[a-z0-9_]+/i,
		lookbehind: true
	},
	'keyword' : /\b(?:as|assert|async|await|break|class|continue|def|del|elif|else|except|exec|finally|for|from|global|if|import|in|is|lambda|pass|print|raise|return|try|while|with|yield)\b/,
	'boolean' : /\b(?:True|False)\b/,
	'number' : /\b-?(?:0[bo])?(?:(?:\d|0x[\da-f])[\da-f]*\.?\d*|\.\d+)(?:e[+-]?\d+)?j?\b/i,
	'operator' : /[-+%=]=?|!=|\*\*?=?|\/\/?=?|<[<=>]?|>[=>]?|[&|^~]|\b(?:or|and|not)\b/,
	'punctuation' : /[{}[\];(),.:]/
};

/* TODO
	Add support for Markdown notation inside doc comments
	Add support for nested block comments...
	Match closure params even when not followed by dash or brace
	Add better support for macro definition
*/

Prism.languages.rust = {
	'comment': [
		{
			pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
			lookbehind: true
		},
		{
			pattern: /(^|[^\\:])\/\/.*/,
			lookbehind: true
		}
	],
	'string': [
		/b?r(#*)"(?:\\?.)*?"\1/,
		/b?("|')(?:\\?.)*?\1/
	],
	'keyword': /\b(?:abstract|alignof|as|be|box|break|const|continue|crate|do|else|enum|extern|false|final|fn|for|if|impl|in|let|loop|match|mod|move|mut|offsetof|once|override|priv|pub|pure|ref|return|sizeof|static|self|struct|super|true|trait|type|typeof|unsafe|unsized|use|virtual|where|while|yield)\b/,

	'attribute': {
		pattern: /#!?\[.+?\]/,
		alias: 'attr-name'
	},

	'function': [
		/[a-z0-9_]+(?=\s*\()/i,
		// Macros can use parens or brackets
		/[a-z0-9_]+!(?=\s*\(|\[)/i
	],
	'macro-rules': {
		pattern: /[a-z0-9_]+!/i,
		alias: 'function'
	},

	// Hex, oct, bin, dec numbers with visual separators and type suffix
	'number': /\b-?(?:0x[\dA-Fa-f](?:_?[\dA-Fa-f])*|0o[0-7](?:_?[0-7])*|0b[01](?:_?[01])*|(\d(_?\d)*)?\.?\d(_?\d)*([Ee][+-]?\d+)?)(?:_?(?:[iu](?:8|16|32|64)?|f32|f64))?\b/,

	// Closure params should not be confused with bitwise OR |
	'closure-params': {
		pattern: /\|[^|]*\|(?=\s*[{-])/,
		inside: {
			'punctuation': /[\|:,]/,
			'operator': /[&*]/
		}
	},
	'punctuation': /[{}[\];(),:]|\.+|->/,
	'operator': /[-+*\/%!^=]=?|@|&[&=]?|\|[|=]?|<<?=?|>>?=?/
};