text: /*
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  'use strict';
  
  const P = require('parsimmon');
  
  /**
   * Creates a parser for a Boolean variable
   * @param {object} variable the variable ast node
   * @returns {object} the parser
   */
  function booleanParser() {
      return P.alt(P.string('true'),P.string('false')).map(function(x) {
          if (x === 'true') {
              return true;
          } else {
              return false;
          }
      });
  }
  
  module.exports = (format) => (r) => booleanParser();
  