(function(){

// private helper vars
var lang = /\blang(?:uage)?-(?!\*)(\w+)\b/i;

var _ = self.prism = {
	util: {
		type: function (o) { 
			return object.prototype.tostring.call(o).match(/\[object (\w+)\]/)[1];
		},
		
		// 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':
					return o.slice();
			}
			
			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
		insertbefore: function (inside, before, insert, root) {
			root = root || _.languages;
			var grammar = root[inside];
			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];
				}
			}
			
			return root[inside] = ret;
		},
		
		// traverse a language definition with depth first search
		dfs: function(o, callback) {
			for (var i in o) {
				callback.call(o, i, o[i]);
				
				if (_.util.type(o) === 'object') {
					_.languages.dfs(o[i], callback);
				}
			}
		}
	},

	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];
		}

		if (!grammar) {
			return;
		}
		
		// 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;
		
		if(!code) {
			return;
		}
		
		code = code.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ');
		
		var env = {
			element: element,
			language: language,
			grammar: grammar,
			code: code
		};
		
		_.hooks.run('before-highlight', env);
		
		if (async && self.worker) {
			var worker = new worker(_.filename);	
			
			worker.onmessage = function(evt) {
				env.highlightedcode = token.stringify(json.parse(evt.data), language);

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

				env.element.innerhtml = env.highlightedcode;
				
				callback && callback.call(env.element);
				_.hooks.run('after-highlight', env);
			};
			
			worker.postmessage(json.stringify({
				language: env.language,
				code: env.code
			}));
		}
		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);
		}
	},
	
	highlight: function (text, grammar, language) {
		return token.stringify(_.tokenize(text, grammar), 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 pattern = grammar[token], 
				inside = pattern.inside,
				lookbehind = !!pattern.lookbehind,
				lookbehindlength = 0;
			
			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);
					
					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) {
	this.type = type;
	this.content = content;
};

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

	if (object.prototype.tostring.call(o) == '[object 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';
	}
	
	_.hooks.run('wrap', env);
	
	var attributes = '';
	
	for (var name in env.attributes) {
		attributes += name + '="' + (env.attributes[name] || '') + '"';
	}
	
	return '<' + env.tag + ' class="' + env.classes.join(' ') + '" ' + attributes + '>' + env.content + '</' + env.tag + '>';
	
};

if (!self.document) {
	// in worker
	self.addeventlistener('message', function(evt) {
		var message = json.parse(evt.data),
		    lang = message.language,
		    code = message.code;
		
		self.postmessage(json.stringify(_.tokenize(code, _.languages[lang])));
		self.close();
	}, false);
	
	return;
}

// get current script and highlight
var script = document.getelementsbytagname('script');

script = script[script.length - 1];

if (script) {
	_.filename = script.src;
	
	if (document.addeventlistener && !script.hasattribute('data-manual')) {
		document.addeventlistener('domcontentloaded', _.highlightall);
	}
}

})();

/* **********************************************
     begin prism-markup.js
********************************************** */

prism.languages.markup = {
	'comment': /&lt;!--[\w\w]*?-->/g,
	'prolog': /&lt;\?.+?\?>/,
	'doctype': /&lt;!doctype.+?>/,
	'cdata': /&lt;!\[cdata\[[\w\w]*?]]>/i,
	'tag': {
		pattern: /&lt;\/?[\w:-]+\s*(?:\s+[\w:-]+(?:=(?:("|')(\\?[\w\w])*?\1|\w+))?\s*)*\/?>/gi,
		inside: {
			'tag': {
				pattern: /^&lt;\/?[\w:-]+/i,
				inside: {
					'punctuation': /^&lt;\/?/,
					'namespace': /^[\w-]+?:/
				}
			},
			'attr-value': {
				pattern: /=(?:('|")[\w\w]*?(\1)|[^\s>]+)/gi,
				inside: {
					'punctuation': /=|>|"/g
				}
			},
			'punctuation': /\/?>/g,
			'attr-name': {
				pattern: /[\w:-]+/g,
				inside: {
					'namespace': /^[\w-]+?:/
				}
			}
			
		}
	},
	'entity': /&amp;#?[\da-z]{1,8};/gi
};

// 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;/, '&');
	}
});

/* **********************************************
     begin prism-css.js
********************************************** */

prism.languages.css = {
	'comment': /\/\*[\w\w]*?\*\//g,
	'atrule': {
		pattern: /@[\w-]+?.*?(;|(?=\s*{))/gi,
		inside: {
			'punctuation': /[;:]/g
		}
	},
	'url': /url\((["']?).*?\1\)/gi,
	'selector': /[^\{\}\s][^\{\};]*(?=\s*\{)/g,
	'property': /(\b|\b)[\w-]+(?=\s*:)/ig,
	'string': /("|')(\\?.)*?\1/g,
	'important': /\b!important\b/gi,
	'ignore': /&(lt|gt|amp);/gi,
	'punctuation': /[\{\};:]/g
};

if (prism.languages.markup) {
	prism.languages.insertbefore('markup', 'tag', {
		'style': {
			pattern: /(&lt;|<)style[\w\w]*?(>|&gt;)[\w\w]*?(&lt;|<)\/style(>|&gt;)/ig,
			inside: {
				'tag': {
					pattern: /(&lt;|<)style[\w\w]*?(>|&gt;)|(&lt;|<)\/style(>|&gt;)/ig,
					inside: prism.languages.markup.tag.inside
				},
				rest: prism.languages.css
			}
		}
	});
}

/* **********************************************
     begin prism-clike.js
********************************************** */

prism.languages.clike = {
	'comment': {
		pattern: /(^|[^\\])(\/\*[\w\w]*?\*\/|(^|[^:])\/\/.*?(\r?\n|$))/g,
		lookbehind: true
	},
	'string': /("|')(\\?.)*?\1/g,
	'class-name': {
		pattern: /((?:class|interface|extends|implements|trait|instanceof|new)\s+)[a-z0-9_\.\\]+/ig,
		lookbehind: true,
		inside: {
			punctuation: /(\.|\\)/
		}
	},
	'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|catch|finally|null|break|continue)\b/g,
	'boolean': /\b(true|false)\b/g,
	'function': {
		pattern: /[a-z0-9_]+\(/ig,
		inside: {
			punctuation: /\(/
		}
	},
	'number': /\b-?(0x[\da-fa-f]+|\d*\.?\d+([ee]-?\d+)?)\b/g,
	'operator': /[-+]{1,2}|!|=?&lt;|=?&gt;|={1,2}|(&amp;){1,2}|\|?\||\?|\*|\/|\~|\^|\%/g,
	'ignore': /&(lt|gt|amp);/gi,
	'punctuation': /[{}[\];(),.:]/g
};

/* **********************************************
     begin prism-javascript.js
********************************************** */

prism.languages.javascript = prism.languages.extend('clike', {
	'keyword': /\b(var|let|if|else|while|do|for|return|in|instanceof|function|new|with|typeof|try|catch|finally|null|break|continue)\b/g,
	'number': /\b-?(0x[\da-fa-f]+|\d*\.?\d+([ee]-?\d+)?|nan|-?infinity)\b/g
});

prism.languages.insertbefore('javascript', 'keyword', {
	'regex': {
		pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\r\n])+\/[gim]{0,3}(?=\s*($|[\r\n,.;})]))/g,
		lookbehind: true
	}
});

if (prism.languages.markup) {
	prism.languages.insertbefore('markup', 'tag', {
		'script': {
			pattern: /(&lt;|<)script[\w\w]*?(>|&gt;)[\w\w]*?(&lt;|<)\/script(>|&gt;)/ig,
			inside: {
				'tag': {
					pattern: /(&lt;|<)script[\w\w]*?(>|&gt;)|(&lt;|<)\/script(>|&gt;)/ig,
					inside: prism.languages.markup.tag.inside
				},
				rest: prism.languages.javascript
			}
		}
	});
}

/* **********************************************
     begin prism-file-highlight.js
********************************************** */

(function(){

if (!self.prism || !self.document || !document.queryselector) {
	return;
}

var extensions = {
	'js': 'javascript',
	'html': 'markup',
	'svg': 'markup'
};

array.prototype.slice.call(document.queryselectorall('pre[data-src]')).foreach(function(pre) {
	var src = pre.getattribute('data-src');
	var extension = (src.match(/\.(\w+)$/) || [,''])[1];
	var language = extensions[extension] || extension;
	
	var code = document.createelement('code');
	code.classname = 'language-' + language;
	
	pre.textcontent = '';
	
	code.textcontent = 'loading…';
	
	pre.appendchild(code);
	
	var xhr = new xmlhttprequest();
	
	xhr.open('get', src, true);

	xhr.onreadystatechange = function() {
		if (xhr.readystate == 4) {
			
			if (xhr.status < 400 && xhr.responsetext) {
				code.textcontent = xhr.responsetext;
			
				prism.highlightelement(code);
			}
			else if (xhr.status >= 400) {
				code.textcontent = '✖ error ' + xhr.status + ' while fetching file: ' + xhr.statustext;
			}
			else {
				code.textcontent = '✖ error: file does not exist or is empty';
			}
		}
	};
	
	xhr.send(null);
});

})();