reprism/src/languages/parigp.js

Modular Syntax highlighting for the web

export default {
  language: 'parigp',
  init: Prism => {
    Prism.languages.parigp = {
      comment: /\/\*[\s\S]*?\*\/|\\\\.*/,
      string: {
        pattern: /"(?:[^"\\\r\n]|\\.)*"/,
        greedy: true,
      },
      // PARI/GP does not care about white spaces at all
      // so let's process the keywords to build an appropriate regexp
      // (e.g. "b *r *e *a *k", etc.)
      keyword: (function () {
        let keywords = [
          'breakpoint',
          'break',
          'dbg_down',
          'dbg_err',
          'dbg_up',
          'dbg_x',
          'forcomposite',
          'fordiv',
          'forell',
          'forpart',
          'forprime',
          'forstep',
          'forsubgroup',
          'forvec',
          'for',
          'iferr',
          'if',
          'local',
          'my',
          'next',
          'return',
          'until',
          'while',
        ]
        keywords = keywords
          .map(keyword => keyword.split('').join(' *'))
          .join('|')
        return RegExp(`\\b(?:${keywords})\\b`)
      }()),
      function: /\w[\w ]*?(?= *\()/,
      number: {
        // The lookbehind and the negative lookahead prevent from breaking the .. operator
        pattern: /((?:\. *\. *)?)(?:\d(?: *\d)*(?: *(?!\. *\.)\.(?: *\d)*)?|\. *\d(?: *\d)*)(?: *e *[+-]? *\d(?: *\d)*)?/i,
        lookbehind: true,
      },
      operator: /\. *\.|[*\/!](?: *=)?|%(?: *=|(?: *#)?(?: *')*)?|\+(?: *[+=])?|-(?: *[-=>])?|<(?:(?: *<)?(?: *=)?| *>)?|>(?: *>)?(?: *=)?|=(?: *=){0,2}|\\(?: *\/)?(?: *=)?|&(?: *&)?|\| *\||['#~^]/,
      punctuation: /[\[\]{}().,:;|]/,
    }
  },
}