text: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
   */
  
  #ifndef NIFI_MINIFI_CPP_SCRIPTENGINE_H
  #define NIFI_MINIFI_CPP_SCRIPTENGINE_H
  
  #include <string>
  
  namespace org {
  namespace apache {
  namespace nifi {
  namespace minifi {
  namespace script {
  
  class ScriptEngine {
   public:
    /**
     * Evaluates the given script string, storing the expression's result into res_var, if res_var is not empty.
     * @param script
     * @param res_var
     */
    virtual void eval(const std::string &script) = 0;
  
    /**
     * Evaluates the given script file, storing the expression's result into res_var, if res_var is not empty.
     * @param script
     * @param res_var
     */
    virtual void evalFile(const std::string &file_name) = 0;
  
    virtual ~ScriptEngine() = default;
  };
  
  } /* namespace script */
  } /* namespace minifi */
  } /* namespace nifi */
  } /* namespace apache */
  } /* namespace org */
  
  #endif  // NIFI_MINIFI_CPP_SCRIPTENGINE_H
  