reprism/src/languages/lua.js

Modular Syntax highlighting for the web

export default {
  language: 'lua',
  init: Prism => {
    Prism.languages.lua = {
      comment: /^#!.+|--(?:\[(=*)\[[\s\S]*?\]\1\]|.*)/m,
      // \z may be used to skip the following space
      string: {
        pattern: /(["'])(?:(?!\1)[^\\\r\n]|\\z(?:\r\n|\s)|\\(?:\r\n|[\s\S]))*\1|\[(=*)\[[\s\S]*?\]\2\]/,
        greedy: true,
      },
      number: /\b0x[a-f\d]+\.?[a-f\d]*(?:p[+-]?\d+)?\b|\b\d+(?:\.\B|\.?\d*(?:e[+-]?\d+)?\b)|\B\.\d+(?:e[+-]?\d+)?\b/i,
      keyword: /\b(?:and|break|do|else|elseif|end|false|for|function|goto|if|in|local|nil|not|or|repeat|return|then|true|until|while)\b/,
      function: /(?!\d)\w+(?=\s*(?:[({]))/,
      operator: [
        /[-+*%^&|#]|\/\/?|<[<=]?|>[>=]?|[=~]=?/,
        {
          // Match ".." but don't break "..."
          pattern: /(^|[^.])\.\.(?!\.)/,
          lookbehind: true,
        },
      ],
      punctuation: /[\[\](){},;]|\.+|:+/,
    }
  },
}