text: /*
  * MIT License
  *
  * Copyright (c) 2020 Jimmie Bergmann
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files(the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions :
  *
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
  */
  
  #ifndef MOLTEN_CORE_UTILITY_SMARTFUNCTION_HPP
  #define MOLTEN_CORE_UTILITY_SMARTFUNCTION_HPP
  
  #include "Molten/Types.hpp"
  #include <functional>
  
  namespace Molten
  {
  
      /**
      * @brief Smart function class.
      *
      * This class makes it possible to call a function if an unhandled exeption is thrown.
      * The passed function will be called at destruction of this object.
      * Release the function before object destruction to prevent the function from being called at destruction.
      *
      * Example:
      *
      *   SmartFunction sf([this]()
      *   {
      *       // cleanup here..
      *   });
      *
      *   if(error)
      *   {
      *       throw Exception("Error here.");
      *   }
      *
      *   sf.Release(); // Everything is fine, release the cleanup function.
      *
      */
      class MOLTEN_API SmartFunction
      {
  
      public:
  
          using Function = std::function<void()>; ///< Function data type.
  
          /**
          * @brief Constructor.
          *        Pass function to call at destruction.
          */
          SmartFunction(Function&& function = nullptr);
  
          /**
          * @brief Destructor.
          *        Passed function is being called if Release have not been called.
          */
          ~SmartFunction();
  
          /**
          * @brief Release the function. It's not going to be called at destruction anymore.
          */
          void Release();
  
      private:
  
          Function m_function;
  
      };
  
  }
  
  #endif