'use strict'

module.exports = lua
lua.displayName = 'lua'
lua.aliases = []
function lua(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|[^z]))*\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: /[\[\](){},;]|\.+|:+/
  }
}