Function compileGetter

06.Router/basic/js/vue.js:2899–2911

* Rewrite an expression, prefixing all path accessors with * `scope.` and generate getter/setter functions. * * @param {String} exp * @return {Function}

(exp)

   */

  function compileGetter(exp) {
    if (improperKeywordsRE.test(exp)) {
      'development' !== 'production' && warn('Avoid using reserved keywords in expression: ' + exp);
    }
    // reset state
    saved.length = 0;
    // save strings and object literal keys
    var body = exp.replace(saveRE, save).replace(wsRE, '');
    // rewrite all paths
    // pad 1 space here because the regex matches 1 extra char
    body = (' ' + body).replace(identRE, rewrite).replace(restoreRE, restore);
    return makeGetterFn(body);
  }

  /**
   * Build a getter function. Requires eval.