refractor/lang/nix.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

'use strict';

module.exports = nix;
nix.displayName = 'nix';
nix.aliases = [];
function nix(Prism) {
  Prism.languages.nix = {
    comment: /\/\*[\s\S]*?\*\/|#.*/,
    string: {
      pattern: /"(?:[^"\\]|\\[\s\S])*"|''(?:(?!'')[\s\S]|''(?:'|\\|\$\{))*''/,
      greedy: true,
      inside: {
        interpolation: {
          // The lookbehind ensures the ${} is not preceded by \ or ''
          pattern: /(^|(?:^|(?!'').)[^\\])\$\{(?:[^}]|\{[^}]*\})*}/,
          lookbehind: true,
          inside: {
            antiquotation: {
              pattern: /^\$(?=\{)/,
              alias: 'variable'
            }
            // See rest below
          }
        }
      }
    },
    url: [
      /\b(?:[a-z]{3,7}:\/\/)[\w\-+%~\/.:#=?&]+/,
      {
        pattern: /([^\/])(?:[\w\-+%~.:#=?&]*(?!\/\/)[\w\-+%~\/.:#=?&])?(?!\/\/)\/[\w\-+%~\/.:#=?&]*/,
        lookbehind: true
      }
    ],
    antiquotation: {
      pattern: /\$(?=\{)/,
      alias: 'variable'
    },
    number: /\b\d+\b/,
    keyword: /\b(?:assert|builtins|else|if|in|inherit|let|null|or|then|with)\b/,
    function: /\b(?:abort|add|all|any|attrNames|attrValues|baseNameOf|compareVersions|concatLists|currentSystem|deepSeq|derivation|dirOf|div|elem(?:At)?|fetch(?:url|Tarball)|filter(?:Source)?|fromJSON|genList|getAttr|getEnv|hasAttr|hashString|head|import|intersectAttrs|is(?:Attrs|Bool|Function|Int|List|Null|String)|length|lessThan|listToAttrs|map|mul|parseDrvName|pathExists|read(?:Dir|File)|removeAttrs|replaceStrings|seq|sort|stringLength|sub(?:string)?|tail|throw|to(?:File|JSON|Path|String|XML)|trace|typeOf)\b|\bfoldl'\B/,
    boolean: /\b(?:true|false)\b/,
    operator: /[=!<>]=?|\+\+?|\|\||&&|\/\/|->?|[?@]/,
    punctuation: /[{}()[\].,:;]/
  };
  Prism.languages.nix.string.inside.interpolation.inside.rest = Prism.util.clone(
    Prism.languages.nix
  );
}