File indexing completed on 2024-05-19 04:25:09

 /*
  *  SPDX-FileCopyrightText: 2023 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 #ifndef KISLAZYVALUEWRAPPER_H
 #define KISLAZYVALUEWRAPPER_H
 
 #include <functional>
 
 /**
  * A simple wrapper that creates a value from a functor on construction.
  * It is not a "lazy value" class in a classic form, because it requires
  * to be wrapped into KisLazyStorage to support atomic/thread-safe access.
  */
 template <typename T>
 struct KisLazyValueWrapper
 {
     using value_type = T;
 
     KisLazyValueWrapper() = default;
 
     explicit KisLazyValueWrapper(std::function<value_type()> func) {
         value = func();
     }
 
     ~KisLazyValueWrapper() = default;
 
     operator const value_type&() const {
         return value;
     }
 
     KisLazyValueWrapper(const KisLazyValueWrapper&rhs) = delete;
     KisLazyValueWrapper& operator=(const KisLazyValueWrapper&rhs) = delete;
 
     KisLazyValueWrapper(KisLazyValueWrapper&&rhs) = default;
     KisLazyValueWrapper& operator=(KisLazyValueWrapper&&rhs) = default;
 
     value_type value {};
 };
 
 #endif // KISLAZYVALUEWRAPPER_H