Function registerLangHandler

docs/js/google-code-prettify.js:1239–1248

Register a language handler for the given file extensions. * @param {function (Object)} handler a function from source code to a list * of decorations. Takes a single argument job which describes the * state of the computation. The single parameter has the form * {@

(handler, fileExtensions)

    * @param {Array.<string>} fileExtensions
    */
  function registerLangHandler(handler, fileExtensions) {
    for (var i = fileExtensions.length; --i >= 0;) {
      var ext = fileExtensions[i];
      if (!langHandlerRegistry.hasOwnProperty(ext)) {
        langHandlerRegistry[ext] = handler;
      } else if (win['console']) {
        console['warn']('cannot override language handler %s', ext);
      }
    }
  }
  function langHandlerForExtension(extension, source) {
    if (!(extension && langHandlerRegistry.hasOwnProperty(extension))) {
      // Treat it as markup if the first non whitespace character is a < and