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devdocs/assets/javascripts/vendor/prism.js

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/* http://prismjs.com/download.html?themes=prism&languages=markup+css+clike+javascript+php+coffeescript+c+cpp+python+ruby */
/**
* 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 _ = 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];
},
// 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
* 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) {
for (var i in o) {
if (o.hasOwnProperty(i)) {
callback.call(o, i, o[i], type || i);
if (_.util.type(o[i]) === 'Object') {
_.languages.DFS(o[i], callback);
}
else if (_.util.type(o[i]) === 'Array') {
_.languages.DFS(o[i], callback, i);
}
}
}
}
},
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;
}
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) {
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++) { // Dont 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 (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';
}
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 += 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;
// self.postMessage(JSON.stringify(_.util.encode(_.tokenize(code, _.languages[lang]))));
// self.close();
// }, false);
// return self.Prism;
// }
// 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);
// }
// }
return self.Prism;
})();
// if (typeof module !== 'undefined' && module.exports) {
// module.exports = Prism;
// }
// ;
Prism.languages.markup = {
'comment': /<!--[\w\W]*?-->/g,
'prolog': /<\?.+?\?>/,
'doctype': /<!DOCTYPE.+?>/,
'cdata': /<!\[CDATA\[[\w\W]*?]]>/i,
'tag': {
pattern: /<\/?[\w:-]+\s*(?:\s+[\w:-]+(?:=(?:("|')(\\?[\w\W])*?\1|[^\s'">=]+))?\s*)*\/?>/gi,
inside: {
'tag': {
pattern: /^<\/?[\w:-]+/i,
inside: {
'punctuation': /^<\/?/,
'namespace': /^[\w-]+?:/
}
},
'attr-value': {
pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/gi,
inside: {
'punctuation': /=|>|"/g
}
},
'punctuation': /\/?>/g,
'attr-name': {
pattern: /[\w:-]+/g,
inside: {
'namespace': /^[\w-]+?:/
}
}
}
},
'entity': /\&#?[\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;/, '&');
}
});
;
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,
'punctuation': /[\{\};:]/g,
'function': /[-a-z0-9]+(?=\()/ig
};
if (Prism.languages.markup) {
Prism.languages.insertBefore('markup', 'tag', {
'style': {
pattern: /<style[\w\W]*?>[\w\W]*?<\/style>/ig,
inside: {
'tag': {
pattern: /<style[\w\W]*?>|<\/style>/ig,
inside: Prism.languages.markup.tag.inside
},
rest: Prism.languages.css
},
alias: 'language-css'
}
});
Prism.languages.insertBefore('inside', 'attr-value', {
'style-attr': {
pattern: /\s*style=("|').+?\1/ig,
inside: {
'attr-name': {
pattern: /^\s*style/ig,
inside: Prism.languages.markup.tag.inside
},
'punctuation': /^\s*=\s*['"]|['"]\s*$/,
'attr-value': {
pattern: /.+/gi,
inside: Prism.languages.css
}
},
alias: 'language-css'
}
}, Prism.languages.markup.tag);
};
Prism.languages.clike = {
'comment': [
{
pattern: /(^|[^\\])\/\*[\w\W]*?\*\//g,
lookbehind: true
},
{
pattern: /(^|[^\\:])\/\/.*?(\r?\n|$)/g,
lookbehind: true
}
],
'string': /("|')(\\?.)*?\1/g,
'class-name': {
pattern: /((?:(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/ig,
lookbehind: true,
inside: {
punctuation: /(\.|\\)/
}
},
'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|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}|!|<=?|>=?|={1,3}|&{1,2}|\|?\||\?|\*|\/|\~|\^|\%/g,
'ignore': /&(lt|gt|amp);/gi,
'punctuation': /[{}[\];(),.:]/g
};
;
Prism.languages.javascript = Prism.languages.extend('clike', {
'keyword': /\b(break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|false|finally|for|function|get|if|implements|import|in|instanceof|interface|let|new|null|package|private|protected|public|return|set|static|super|switch|this|throw|true|try|typeof|var|void|while|with|yield)\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*($|[\r\n,.;})]))/g,
lookbehind: true
}
});
if (Prism.languages.markup) {
Prism.languages.insertBefore('markup', 'tag', {
'script': {
pattern: /<script[\w\W]*?>[\w\W]*?<\/script>/ig,
inside: {
'tag': {
pattern: /<script[\w\W]*?>|<\/script>/ig,
inside: Prism.languages.markup.tag.inside
},
rest: Prism.languages.javascript
},
alias: 'language-javascript'
}
});
}
;
/**
* Original by Aaron Harun: http://aahacreative.com/2012/07/31/php-syntax-highlighting-prism/
* Modified by Miles Johnson: http://milesj.me
*
* Supports the following:
* - Extends clike syntax
* - Support for PHP 5.3+ (namespaces, traits, generators, etc)
* - Smarter constant and function matching
*
* Adds the following new token classes:
* constant, delimiter, variable, function, package
*/
Prism.languages.php = Prism.languages.extend('clike', {
'keyword': /\b(and|or|xor|array|as|break|case|cfunction|class|const|continue|declare|default|die|do|else|elseif|enddeclare|endfor|endforeach|endif|endswitch|endwhile|extends|for|foreach|function|include|include_once|global|if|new|return|static|switch|use|require|require_once|var|while|abstract|interface|public|implements|private|protected|parent|throw|null|echo|print|trait|namespace|final|yield|goto|instanceof|finally|try|catch)\b/ig,
'constant': /\b[A-Z0-9_]{2,}\b/g,
'comment': {
pattern: /(^|[^\\])(\/\*[\w\W]*?\*\/|(^|[^:])(\/\/|#).*?(\r?\n|$))/g,
lookbehind: true
}
});
Prism.languages.insertBefore('php', 'keyword', {
'delimiter': /(\?>|<\?php|<\?)/ig,
'variable': /(\$\w+)\b/ig,
'package': {
pattern: /(\\|namespace\s+|use\s+)[\w\\]+/g,
lookbehind: true,
inside: {
punctuation: /\\/
}
}
});
// Must be defined after the function pattern
Prism.languages.insertBefore('php', 'operator', {
'property': {
pattern: /(->)[\w]+/g,
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++) {
env.highlightedCode = env.highlightedCode.replace('{{{PHP' + (i + 1) + '}}}', Prism.highlight(t, env.grammar, 'php'));
}
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\">$1</span>");
}
});
// Add the rules before all others
Prism.languages.insertBefore('php', 'comment', {
'markup': {
pattern: /<[^?]\/?(.*?)>/g,
inside: Prism.languages.markup
},
'php': /\{\{\{PHP[0-9]+\}\}\}/g
});
}
;
Prism.languages.coffeescript = Prism.languages.extend('javascript', {
'comment': [
/([#]{3}\s*\r?\n(.*\s*\r*\n*)\s*?\r?\n[#]{3})/g,
/(\s|^)([#]{1}[^#^\r^\n]{2,}?(\r?\n|$))/g
],
'keyword': /\b(this|window|delete|class|extends|namespace|extend|ar|let|if|else|while|do|for|each|of|return|in|instanceof|new|with|typeof|try|catch|finally|null|undefined|break|continue)\b/g
});
Prism.languages.insertBefore('coffeescript', 'keyword', {
'function': {
pattern: /[a-z|A-z]+\s*[:|=]\s*(\([.|a-z\s|,|:|{|}|\"|\'|=]*\))?\s*-&gt;/gi,
inside: {
'function-name': /[_?a-z-|A-Z-]+(\s*[:|=])| @[_?$?a-z-|A-Z-]+(\s*)| /g,
'operator': /[-+]{1,2}|!|=?&lt;|=?&gt;|={1,2}|(&amp;){1,2}|\|?\||\?|\*|\//g
}
},
'attr-name': /[_?a-z-|A-Z-]+(\s*:)| @[_?$?a-z-|A-Z-]+(\s*)| /g
});
;
Prism.languages.c = Prism.languages.extend('clike', {
// allow for c multiline strings
'string': /("|')([^\n\\\1]|\\.|\\\r*\n)*?\1/g,
'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/g,
'operator': /[-+]{1,2}|!=?|<{1,2}=?|>{1,2}=?|\->|={1,2}|\^|~|%|&{1,2}|\|?\||\?|\*|\//g
});
Prism.languages.insertBefore('c', 'string', {
// property class reused for macro statements
'property': {
// allow for multiline macro definitions
// spaces after the # character compile fine with gcc
pattern: /((^|\n)\s*)#\s*[a-z]+([^\n\\]|\\.|\\\r*\n)*/gi,
lookbehind: true,
inside: {
// highlight the path of the include statement as a string
'string': {
pattern: /(#\s*include\s*)(<.+?>|("|')(\\?.)+?\3)/g,
lookbehind: true,
}
}
}
});
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|delete\[\]|do|double|dynamic_cast|else|enum|explicit|export|extern|float|for|friend|goto|if|inline|int|long|mutable|namespace|new|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/g,
'boolean': /\b(true|false)\b/g,
'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/g
});
Prism.languages.insertBefore('cpp', 'keyword', {
'class-name': {
pattern: /(class\s+)[a-z0-9_]+/ig,
lookbehind: true,
},
});;
Prism.languages.python= {
'comment': {
pattern: /(^|[^\\])#.*?(\r?\n|$)/g,
lookbehind: true
},
'string': /"""[\s\S]+?"""|("|')(\\?.)*?\1/g,
'keyword' : /\b(as|assert|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/g,
'boolean' : /\b(True|False)\b/g,
'number' : /\b-?(0x)?\d*\.?[\da-f]+\b/g,
'operator' : /[-+]{1,2}|=?&lt;|=?&gt;|!|={1,2}|(&){1,2}|(&amp;){1,2}|\|?\||\?|\*|\/|~|\^|%|\b(or|and|not)\b/g,
'ignore' : /&(lt|gt|amp);/gi,
'punctuation' : /[{}[\];(),.:]/g
};
;
/**
* Original by Samuel Flores
*
* Adds the following new token classes:
* constant, builtin, variable, symbol, regex
*/
Prism.languages.ruby = Prism.languages.extend('clike', {
'comment': /#[^\r\n]*(\r?\n|$)/g,
'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/g,
'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/g
});
Prism.languages.insertBefore('ruby', 'keyword', {
'regex': {
pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\r\n])+\/[gim]{0,3}(?=\s*($|[\r\n,.;})]))/g,
lookbehind: true
},
'variable': /[@$]+\b[a-zA-Z_][a-zA-Z_0-9]*[?!]?\b/g,
'symbol': /:\b[a-zA-Z_][a-zA-Z_0-9]*[?!]?\b/g
});
;