static/highlight/languages/ebnf.js

   1 /*! `ebnf` grammar compiled for Highlight.js 11.11.1 */
   2   (function(){
   3     var hljsGrammar = (function () {
   4   'use strict';
   5
   6   /*
   7   Language: Extended Backus-Naur Form
   8   Author: Alex McKibben <alex@nullscope.net>
   9   Website: https://en.wikipedia.org/wiki/Extended_Backus–Naur_form
  10   Category: syntax
  11   */
  12
  13   /** @type LanguageFn */
  14   function ebnf(hljs) {
  15     const commentMode = hljs.COMMENT(/\(\*/, /\*\)/);
  16
  17     const nonTerminalMode = {
  18       className: "attribute",
  19       begin: /^[ ]*[a-zA-Z]+([\s_-]+[a-zA-Z]+)*/
  20     };
  21
  22     const specialSequenceMode = {
  23       className: "meta",
  24       begin: /\?.*\?/
  25     };
  26
  27     const ruleBodyMode = {
  28       begin: /=/,
  29       end: /[.;]/,
  30       contains: [
  31         commentMode,
  32         specialSequenceMode,
  33         {
  34           // terminals
  35           className: 'string',
  36           variants: [
  37             hljs.APOS_STRING_MODE,
  38             hljs.QUOTE_STRING_MODE,
  39             {
  40               begin: '`',
  41               end: '`'
  42             }
  43           ]
  44         }
  45       ]
  46     };
  47
  48     return {
  49       name: 'Extended Backus-Naur Form',
  50       illegal: /\S/,
  51       contains: [
  52         commentMode,
  53         nonTerminalMode,
  54         ruleBodyMode
  55       ]
  56     };
  57   }
  58
  59   return ebnf;
  60
  61 })();
  62
  63     hljs.registerLanguage('ebnf', hljsGrammar);
  64   })();