Method castValueToInteger

src/backend/web-gl/function-node.js:571–578

* * @param {Object} ast * @param {Array} retArr * @return {String[]}

(ast, retArr)

   * @return {String[]}
   */
  castValueToInteger(ast, retArr) {
    this.pushState('casting-to-integer');
    retArr.push('int(');
    this.astGeneric(ast, retArr);
    retArr.push(')');
    this.popState('casting-to-integer');
    return retArr;
  }

  /**
   *